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Removed examples, they are moved into libopencm3-examples repository.

This commit is contained in:
Piotr Esden-Tempski 2013-04-19 19:33:32 -07:00
parent 67903bfbfe
commit 3e2be1d4a4
316 changed files with 6 additions and 21681 deletions
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12
Makefile
View File

@ -43,7 +43,7 @@ endif
all: build
build: lib examples
build: lib
generatedheaders:
@printf " UPDATING HEADERS\n"
@ -65,14 +65,6 @@ $(LIB_DIRS): generatedheaders
lib: $(LIB_DIRS)
$(Q)true
EXAMPLE_DIRS:=$(sort $(dir $(wildcard $(addsuffix /*/*/Makefile,$(addprefix examples/,$(TARGETS))))))
$(EXAMPLE_DIRS): lib
@printf " BUILD $@\n";
$(Q)$(MAKE) --directory=$@
examples: $(EXAMPLE_DIRS)
$(Q)true
install: lib
@printf " INSTALL headers\n"
$(Q)$(INSTALL) -d $(INCDIR)/libopencm3
@ -104,5 +96,5 @@ clean: cleanheaders
@printf " CLEAN doxygen\n"
$(Q)$(MAKE) -C doc clean
.PHONY: build lib $(LIB_DIRS) examples $(EXAMPLE_DIRS) install doc clean generatedheaders cleanheaders
.PHONY: build lib $(LIB_DIRS) install doc clean generatedheaders cleanheaders

31
README
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@ -66,34 +66,11 @@ For a more verbose build you can use
Example projects
----------------
The library ships with a few small example projects which illustrate how
individual subsystems of the microcontrollers can be configured and used with
libopencm3. The makefiles are generally useable for your own projects with
only minimal changes for the libopencm3 install path (See Installation)
For flashing the 'miniblink' example (after you built libopencm3 and the
examples by typing 'make' at the top-level directory) onto the Olimex
STM32-H103 eval board (ST STM32F1 series microcontroller), you can execute:
$ cd examples/stm32/f1/stm32-h103/miniblink
$ make flash
The Makefiles of the examples are configured to use a certain OpenOCD
flash programmer, you might need to change some of the variables in the
Makefile if you use a different one.
You can also flash manually like this:
$ openocd -f interface/jtagkey-tiny.cfg -f target/stm32f1x.cfg
$ telnet localhost 4444
> reset halt
> flash write_image erase foobar.hex
> reset
Replace the "jtagkey-tiny.cfg" with whatever JTAG device you are using, and/or
replace "stm32f1x.cfg" with your respective config file. Replace "foobar.hex"
with the file name of the image you want to flash.
The libopencm3 community has written and is maintaining a huge collection of
examples, displaying the capabilities and uses of the library. You can find all
of them in the libopencm3-examples repository:
https://github.com/libopencm3/libopencm3-examples
Installation
------------

137
examples/lm3s/Makefile.include
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@ -1,137 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
## Copyright (C) 2010 Piotr Esden-Tempski <piotr@esden.net>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
PREFIX ?= arm-none-eabi
#PREFIX ?= arm-elf
CC = $(PREFIX)-gcc
LD = $(PREFIX)-gcc
OBJCOPY = $(PREFIX)-objcopy
OBJDUMP = $(PREFIX)-objdump
TOOLCHAIN_DIR ?= ../../../..
ifeq ($(wildcard ../../../../lib/libopencm3_lm3s.a),)
ifneq ($(strip $(shell which $(CC))),)
TOOLCHAIN_DIR := $(shell dirname `which $(CC)`)/../$(PREFIX)
endif
else
ifeq ($(V),1)
$(info We seem to be building the example in the source directory. Using local library!)
endif
endif
CFLAGS += -O0 -g3 \
-Wall -Wextra -Wimplicit-function-declaration \
-Wredundant-decls -Wmissing-prototypes -Wstrict-prototypes \
-Wundef -Wshadow \
-I$(TOOLCHAIN_DIR)/include -fno-common \
-mcpu=cortex-m3 -mthumb -MD -DLM3S
LDSCRIPT ?= $(BINARY).ld
LDFLAGS += -L$(TOOLCHAIN_DIR)/lib \
-T$(LDSCRIPT) -nostartfiles -Wl,--gc-sections
OBJS += $(BINARY).o
OOCD ?= openocd
OOCD_INTERFACE ?= flossjtag
OOCD_BOARD ?= olimex_stm32_h103
# FIXME
# Be silent per default, but 'make V=1' will show all compiler calls.
ifneq ($(V),1)
Q := @
NULL := 2>/dev/null
else
LDFLAGS += -Wl,--print-gc-sections
endif
.SUFFIXES: .elf .bin .hex .srec .list .images
.SECONDEXPANSION:
.SECONDARY:
all: images
images: $(BINARY).images
flash: $(BINARY).flash
%.images: %.bin %.hex %.srec %.list
@#echo "*** $* images generated ***"
%.bin: %.elf
@#printf " OBJCOPY $(*).bin\n"
$(Q)$(OBJCOPY) -Obinary $(*).elf $(*).bin
%.hex: %.elf
@#printf " OBJCOPY $(*).hex\n"
$(Q)$(OBJCOPY) -Oihex $(*).elf $(*).hex
%.srec: %.elf
@#printf " OBJCOPY $(*).srec\n"
$(Q)$(OBJCOPY) -Osrec $(*).elf $(*).srec
%.list: %.elf
@#printf " OBJDUMP $(*).list\n"
$(Q)$(OBJDUMP) -S $(*).elf > $(*).list
%.elf: $(OBJS) $(LDSCRIPT) $(TOOLCHAIN_DIR)/lib/libopencm3_lm3s.a
@#printf " LD $(subst $(shell pwd)/,,$(@))\n"
$(Q)$(LD) $(LDFLAGS) -o $(*).elf $(OBJS) -lopencm3_lm3s
%.o: %.c Makefile
@#printf " CC $(subst $(shell pwd)/,,$(@))\n"
$(Q)$(CC) $(CFLAGS) -o $@ -c $<
clean:
$(Q)rm -f *.o
$(Q)rm -f *.d
$(Q)rm -f *.elf
$(Q)rm -f *.bin
$(Q)rm -f *.hex
$(Q)rm -f *.srec
$(Q)rm -f *.list
# FIXME: Replace STM32 stuff with proper LPC13XX OpenOCD support later.
ifeq ($(OOCD_SERIAL),)
%.flash: %.hex
@printf " FLASH $<\n"
@# IMPORTANT: Don't use "resume", only "reset" will work correctly!
$(Q)$(OOCD) -f interface/$(OOCD_INTERFACE).cfg \
-f board/$(OOCD_BOARD).cfg \
-c "init" -c "reset init" \
-c "stm32x mass_erase 0" \
-c "flash write_image $(*).hex" \
-c "reset" \
-c "shutdown" $(NULL)
else
%.flash: %.hex
@printf " FLASH $<\n"
@# IMPORTANT: Don't use "resume", only "reset" will work correctly!
$(Q)$(OOCD) -f interface/$(OOCD_INTERFACE).cfg \
-f board/$(OOCD_BOARD).cfg \
-c "ft2232_serial $(OOCD_SERIAL)" \
-c "init" -c "reset init" \
-c "stm32x mass_erase 0" \
-c "flash write_image $(*).hex" \
-c "reset" \
-c "shutdown" $(NULL)
endif
.PHONY: images clean
-include $(OBJS:.o=.d)

31
examples/lm3s/lm3s3748-evb/lm3s3748-evb.ld
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@ -1,31 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/* Linker script for Luminary Micro (now TI) Stellaris LM3S3748-EVB. */
/* Define memory regions. */
MEMORY
{
rom (rx) : ORIGIN = 0x00000000, LENGTH = 128K
ram (rwx) : ORIGIN = 0x20000000, LENGTH = 64K
}
/* Include the common ld script. */
INCLUDE libopencm3_lm3s.ld

25
examples/lm3s/lm3s3748-evb/miniblink/Makefile
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@ -1,25 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
BINARY = miniblink
LDSCRIPT = ../lm3s3748-evb.ld
include ../../Makefile.include

9
examples/lm3s/lm3s3748-evb/miniblink/README
View File

@ -1,9 +0,0 @@
------------------------------------------------------------------------------
README
------------------------------------------------------------------------------
This is the smallest-possible example program using libopencm3.
It's intended for the LuminaryMicro LM3S3748-EVB.
It should blink the STATUS LED on the board.

51
examples/lm3s/lm3s3748-evb/miniblink/miniblink.c
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@ -1,51 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2011 Gareth McMullin <gareth@blacksphere.co.nz>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libopencm3/lm3s/systemcontrol.h>
#include <libopencm3/lm3s/gpio.h>
static void gpio_setup(void)
{
SYSTEMCONTROL_RCGC2 |= 0x20; /* Enable GPIOF in run mode. */
GPIO_DIR(GPIOF) |= (1 << 0); /* Configure PF0 as output. */
GPIO_DEN(GPIOF) |= (1 << 0); /* Enable digital function on PF0. */
}
int main(void)
{
int i;
gpio_setup();
/* Blink STATUS LED (PF0) on the board. */
while (1) {
gpio_set(GPIOF, GPIO0);
for (i = 0; i < 800000; i++) /* Wait a bit. */
__asm__("nop");
gpio_clear(GPIOF, GPIO0);
for (i = 0; i < 800000; i++) /* Wait a bit. */
__asm__("nop");
}
return 0;
}

143
examples/lm4f/Makefile.include
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@ -1,143 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
## Copyright (C) 2010 Piotr Esden-Tempski <piotr@esden.net>
## Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
##
## This library is free software: you can redistribute it and/or modify
## it undebipr the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
PREFIX ?= arm-none-eabi
CC = $(PREFIX)-gcc
LD = $(PREFIX)-gcc
OBJCOPY = $(PREFIX)-objcopy
OBJDUMP = $(PREFIX)-objdump
TOOLCHAIN_DIR ?= ../../../..
ifeq ($(wildcard ../../../../lib/libopencm3_lm4f.a),)
ifneq ($(strip $(shell which $(CC))),)
TOOLCHAIN_DIR := $(shell dirname `which $(CC)`)/../$(PREFIX)
endif
else
ifeq ($(V),1)
$(info We seem to be building the example in the source directory. Using local library!)
endif
endif
ARCH_FLAGS = -mthumb -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16
CFLAGS += -O0 -g3 \
-Wall -Wextra -Wimplicit-function-declaration \
-Wredundant-decls -Wmissing-prototypes -Wstrict-prototypes \
-Wundef -Wshadow \
-I$(TOOLCHAIN_DIR)/include \
-fno-common $(ARCH_FLAGS) -MD -DLM4F
LDSCRIPT ?= $(BINARY).ld
LDFLAGS += --static -Wl,--start-group -lc -lgcc -lnosys -Wl,--end-group \
-L$(TOOLCHAIN_DIR)/lib \
-T$(LDSCRIPT) -nostartfiles -Wl,--gc-sections \
$(ARCH_FLAGS)
OBJS += $(BINARY).o
# Support for ICDI is not in any openocd release as of yet
# A patch to add support for ICDI is under review
OOCD ?= openocd
OOCD_INTERFACE ?= ti-icdi
# No official board.cfg for the stellaris launchpad
OOCD_BOARD ?= stellaris_launchpad
# Be silent per default, but 'make V=1' will show all compiler calls.
ifneq ($(V),1)
Q := @
NULL := 2>/dev/null
else
LDFLAGS += -Wl,--print-gc-sections
endif
.SUFFIXES: .elf .bin .hex .srec .list .images
.SECONDEXPANSION:
.SECONDARY:
all: images
images: $(BINARY).images
flash: $(BINARY).flash
%.images: %.bin %.hex %.srec %.list
@#echo "*** $* images generated ***"
%.bin: %.elf
@#printf " OBJCOPY $(*).bin\n"
$(Q)$(OBJCOPY) -Obinary $(*).elf $(*).bin
%.hex: %.elf
@#printf " OBJCOPY $(*).hex\n"
$(Q)$(OBJCOPY) -Oihex $(*).elf $(*).hex
%.srec: %.elf
@#printf " OBJCOPY $(*).srec\n"
$(Q)$(OBJCOPY) -Osrec $(*).elf $(*).srec
%.list: %.elf
@#printf " OBJDUMP $(*).list\n"
$(Q)$(OBJDUMP) -S $(*).elf > $(*).list
%.elf: $(OBJS) $(LDSCRIPT) $(TOOLCHAIN_DIR)/lib/libopencm3_lm4f.a
@#printf " LD $(subst $(shell pwd)/,,$(@))\n"
$(Q)$(LD) -o $(*).elf $(OBJS) -lopencm3_lm4f $(LDFLAGS)
%.o: %.c Makefile
@#printf " CC $(subst $(shell pwd)/,,$(@))\n"
$(Q)$(CC) $(CFLAGS) -o $@ -c $<
clean:
$(Q)rm -f *.o
$(Q)rm -f *.d
$(Q)rm -f *.elf
$(Q)rm -f *.bin
$(Q)rm -f *.hex
$(Q)rm -f *.srec
$(Q)rm -f *.list
# FIXME: Replace STM32 stuff with proper Stellaris support.
ifeq ($(OOCD_SERIAL),)
%.flash: %.hex
@printf " FLASH $<\n"
@# IMPORTANT: Don't use "resume", only "reset" will work correctly!
$(Q)$(OOCD) -f interface/$(OOCD_INTERFACE).cfg \
-f board/$(OOCD_BOARD).cfg \
-c "init" -c "reset init" \
-c "stm32x mass_erase 0" \
-c "flash write_image $(*).hex" \
-c "reset" \
-c "shutdown" $(NULL)
else
%.flash: %.hex
@printf " FLASH $<\n"
@# IMPORTANT: Don't use "resume", only "reset" will work correctly!
$(Q)$(OOCD) -f interface/$(OOCD_INTERFACE).cfg \
-f board/$(OOCD_BOARD).cfg \
-c "ft2232_serial $(OOCD_SERIAL)" \
-c "init" -c "reset init" \
-c "stm32x mass_erase 0" \
-c "flash write_image $(*).hex" \
-c "reset" \
-c "shutdown" $(NULL)
endif
.PHONY: images clean
-include $(OBJS:.o=.d)

31
examples/lm4f/stellaris-ek-lm4f120xl/ek-lm4f120xl.ld
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@ -1,31 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/* Linker script for TI Stellaris EX-LM4F120XL evaluation board. */
/* Define memory regions. */
MEMORY
{
rom (rx) : ORIGIN = 0x00000000, LENGTH = 256K
ram (rwx) : ORIGIN = 0x20000000, LENGTH = 32K
}
/* Include the common ld script. */
INCLUDE libopencm3_lm4f.ld

25
examples/lm4f/stellaris-ek-lm4f120xl/miniblink/Makefile
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@ -1,25 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
BINARY = miniblink
LDSCRIPT = ../ek-lm4f120xl.ld
include ../../Makefile.include

22
examples/lm4f/stellaris-ek-lm4f120xl/miniblink/README
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@ -1,22 +0,0 @@
------------------------------------------------------------------------------
README
------------------------------------------------------------------------------
This example demonstrates the following:
* Configuriong GPIO pins
* Toggling GPIO pins
* Setting up and using GPIO interrupts
* Unlocking protected GPIO pins
* Controlling the system clock
* Changing the system clock on the fly
Flashes the Red, Green and Blue diodes on the board, in order. The system clock
starts at 80MHz.
Pressing SW2 toggles the system clock between 80MHz, 57MHz, 40MHz ,20MHz, and
16MHz by changing the PLL divisor.
Pressing SW1 bypasses the PLL completely, and runs off the raw 16MHz clock
provided by the external crystal oscillator.
The LEDs will toggle at different speeds, depending on the system clock. The
system clock changes are handled within the interrupt service routine.

217
examples/lm4f/stellaris-ek-lm4f120xl/miniblink/miniblink.c
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@ -1,217 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2011 Gareth McMullin <gareth@blacksphere.co.nz>
* Copyright (C) 2012-2013 Alexandru Gagniuc <mr.nuke.me@gmail.com>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* \addtogroup Examples
*
* Flashes the Red, Green and Blue diodes on the board, in order.
*
* RED controlled by PF1
* Green controlled by PF3
* Blue controlled by PF2
*/
#include <libopencm3/cm3/nvic.h>
#include <libopencm3/lm4f/systemcontrol.h>
#include <libopencm3/lm4f/rcc.h>
#include <libopencm3/lm4f/gpio.h>
#include <libopencm3/lm4f/nvic.h>
#include <stdbool.h>
#include <stdio.h>
/* This is how the RGB LED is connected on the stellaris launchpad */
#define RGB_PORT GPIOF
enum {
LED_R = GPIO1,
LED_G = GPIO3,
LED_B = GPIO2,
};
/* This is how the user switches are connected to GPIOF */
enum {
USR_SW1 = GPIO4,
USR_SW2 = GPIO0,
};
/* The divisors we loop through when the user presses SW2 */
enum {
PLL_DIV_80MHZ = 5,
PLL_DIV_57MHZ = 7,
PLL_DIV_40MHZ = 10,
PLL_DIV_20MHZ = 20,
PLL_DIV_16MHZ = 25,
};
static const u8 plldiv[] = {
PLL_DIV_80MHZ,
PLL_DIV_57MHZ,
PLL_DIV_40MHZ,
PLL_DIV_20MHZ,
PLL_DIV_16MHZ,
0
};
/* The PLL divisor we are currently on */
static size_t ipll = 0;
/* Are we bypassing the PLL, or not? */
static bool bypass = false;
/*
* Clock setup:
* Take the main crystal oscillator at 16MHz, run it through the PLL, and divide
* the 400MHz PLL clock to get a system clock of 80MHz.
*/
static void clock_setup(void)
{
rcc_sysclk_config(OSCSRC_MOSC, XTAL_16M, PLL_DIV_80MHZ);
}
/*
* GPIO setup:
* Enable the pins driving the RGB LED as outputs.
*/
static void gpio_setup(void)
{
/*
* Configure GPIOF
* This port is used to control the RGB LED
*/
periph_clock_enable(RCC_GPIOF);
const u32 outpins = (LED_R | LED_G | LED_B);
GPIO_DIR(RGB_PORT) |= outpins; /* Configure outputs. */
GPIO_DEN(RGB_PORT) |= outpins; /* Enable digital function on outputs. */
/*
* Now take care of our buttons
*/
const u32 btnpins = USR_SW1 | USR_SW2;
/*
* PF0 is locked by default. We need to unlock the GPIO_CR register,
* then enable PF0 commit. After we do this, we can setup PF0. If we
* don't do this, any configuration done to PF0 is lost, and we will not
* have a PF0 interrupt.
*/
GPIO_LOCK(GPIOF) = 0x4C4F434B;
GPIO_CR(GPIOF) |= USR_SW2;
/* Configure pins as inputs. */
GPIO_DIR(GPIOF) &= ~btnpins;
/* Enable digital function on the pins. */
GPIO_DEN(GPIOF) |= btnpins;
/* Pull-up the pins. We don't have an external pull-up */
GPIO_PUR(GPIOF) |= btnpins;
}
/*
* IRQ setup:
* Trigger an interrupt whenever a button is depressed.
*/
static void irq_setup(void)
{
const u32 btnpins = USR_SW1 | USR_SW2;
/* Configure interrupt as edge-sensitive */
GPIO_IS(GPIOF) &= ~btnpins;
/* Interrupt only respond to rising or falling edge (single-edge) */
GPIO_IBE(GPIOF) &= ~btnpins;
/* Trigger interrupt on rising-edge (when button is depressed) */
GPIO_IEV(GPIOF) |= btnpins;
/* Finally, Enable interrupt */
GPIO_IM(GPIOF) |= btnpins;
/* Enable the interrupt in the NVIC as well */
nvic_enable_irq(NVIC_GPIOF_IRQ);
}
#define FLASH_DELAY 800000
static void delay(void)
{
int i;
for (i = 0; i < FLASH_DELAY; i++) /* Wait a bit. */
__asm__("nop");
}
int main(void)
{
clock_setup();
gpio_setup();
irq_setup();
/* Blink each color of the RGB LED in order. */
while (1) {
/*
* Flash the Red diode
*/
gpio_set(RGB_PORT, LED_R);
delay(); /* Wait a bit. */
gpio_clear(RGB_PORT, LED_R);
delay(); /* Wait a bit. */
/*
* Flash the Green diode
*/
gpio_set(RGB_PORT, LED_G);
delay(); /* Wait a bit. */
gpio_clear(RGB_PORT, LED_G);
delay(); /* Wait a bit. */
/*
* Flash the Blue diode
*/
gpio_set(RGB_PORT, LED_B);
delay(); /* Wait a bit. */
gpio_clear(RGB_PORT, LED_B);
delay(); /* Wait a bit. */
}
return 0;
}
void gpiof_isr(void)
{
if (GPIO_RIS(GPIOF) & USR_SW1) {
/* SW1 was just depressed */
bypass = !bypass;
if (bypass) {
rcc_pll_bypass_enable();
/*
* The divisor is still applied to the raw clock.
* Disable the divisor, or we'll divide the raw clock.
*/
SYSCTL_RCC &= ~SYSCTL_RCC_USESYSDIV;
}
else
{
rcc_change_pll_divisor(plldiv[ipll]);
}
/* Clear interrupt source */
GPIO_ICR(GPIOF) = USR_SW1;
}
if (GPIO_RIS(GPIOF) & USR_SW2) {
/* SW2 was just depressed */
if (!bypass) {
if (plldiv[++ipll] == 0)
ipll = 0;
rcc_change_pll_divisor(plldiv[ipll]);
}
/* Clear interrupt source */
GPIO_ICR(GPIOF) = USR_SW2;
}
}

137
examples/lpc13xx/Makefile.include
View File

@ -1,137 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
## Copyright (C) 2010 Piotr Esden-Tempski <piotr@esden.net>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
PREFIX ?= arm-none-eabi
#PREFIX ?= arm-elf
CC = $(PREFIX)-gcc
LD = $(PREFIX)-gcc
OBJCOPY = $(PREFIX)-objcopy
OBJDUMP = $(PREFIX)-objdump
TOOLCHAIN_DIR ?= ../../../..
ifeq ($(wildcard ../../../../lib/libopencm3_lpc13xx.a),)
ifneq ($(strip $(shell which $(CC))),)
TOOLCHAIN_DIR := $(shell dirname `which $(CC)`)/../$(PREFIX)
endif
else
ifeq ($(V),1)
$(info We seem to be building the example in the source directory. Using local library!)
endif
endif
CFLAGS += -Os -g \
-Wall -Wextra -Wimplicit-function-declaration \
-Wredundant-decls -Wmissing-prototypes -Wstrict-prototypes \
-Wundef -Wshadow \
-I$(TOOLCHAIN_DIR)/include -fno-common \
-mcpu=cortex-m3 -mthumb -MD -DLPC13XX
LDSCRIPT ?= $(BINARY).ld
LDFLAGS += -L$(TOOLCHAIN_DIR)/lib \
-T$(LDSCRIPT) -nostartfiles -Wl,--gc-sections
OBJS += $(BINARY).o
OOCD ?= openocd
OOCD_INTERFACE ?= flossjtag
OOCD_BOARD ?= olimex_stm32_h103
# FIXME
# Be silent per default, but 'make V=1' will show all compiler calls.
ifneq ($(V),1)
Q := @
NULL := 2>/dev/null
else
LDFLAGS += -Wl,--print-gc-sections
endif
.SUFFIXES: .elf .bin .hex .srec .list .images
.SECONDEXPANSION:
.SECONDARY:
all: images
images: $(BINARY).images
flash: $(BINARY).flash
%.images: %.bin %.hex %.srec %.list
@#echo "*** $* images generated ***"
%.bin: %.elf
@#printf " OBJCOPY $(*).bin\n"
$(Q)$(OBJCOPY) -Obinary $(*).elf $(*).bin
%.hex: %.elf
@#printf " OBJCOPY $(*).hex\n"
$(Q)$(OBJCOPY) -Oihex $(*).elf $(*).hex
%.srec: %.elf
@#printf " OBJCOPY $(*).srec\n"
$(Q)$(OBJCOPY) -Osrec $(*).elf $(*).srec
%.list: %.elf
@#printf " OBJDUMP $(*).list\n"
$(Q)$(OBJDUMP) -S $(*).elf > $(*).list
%.elf: $(OBJS) $(LDSCRIPT) $(TOOLCHAIN_DIR)/lib/libopencm3_lpc13xx.a
@#printf " LD $(subst $(shell pwd)/,,$(@))\n"
$(Q)$(LD) $(LDFLAGS) -o $(*).elf $(OBJS) -lopencm3_lpc13xx
%.o: %.c Makefile
@#printf " CC $(subst $(shell pwd)/,,$(@))\n"
$(Q)$(CC) $(CFLAGS) -o $@ -c $<
clean:
$(Q)rm -f *.o
$(Q)rm -f *.d
$(Q)rm -f *.elf
$(Q)rm -f *.bin
$(Q)rm -f *.hex
$(Q)rm -f *.srec
$(Q)rm -f *.list
# FIXME: Replace STM32 stuff with proper LPC13XX OpenOCD support later.
ifeq ($(OOCD_SERIAL),)
%.flash: %.hex
@printf " FLASH $<\n"
@# IMPORTANT: Don't use "resume", only "reset" will work correctly!
$(Q)$(OOCD) -f interface/$(OOCD_INTERFACE).cfg \
-f board/$(OOCD_BOARD).cfg \
-c "init" -c "reset init" \
-c "stm32x mass_erase 0" \
-c "flash write_image $(*).hex" \
-c "reset" \
-c "shutdown" $(NULL)
else
%.flash: %.hex
@printf " FLASH $<\n"
@# IMPORTANT: Don't use "resume", only "reset" will work correctly!
$(Q)$(OOCD) -f interface/$(OOCD_INTERFACE).cfg \
-f board/$(OOCD_BOARD).cfg \
-c "ft2232_serial $(OOCD_SERIAL)" \
-c "init" -c "reset init" \
-c "stm32x mass_erase 0" \
-c "flash write_image $(*).hex" \
-c "reset" \
-c "shutdown" $(NULL)
endif
.PHONY: images clean
-include $(OBJS:.o=.d)

31
examples/lpc13xx/lpc-p1343/lpc-p1343.ld
View File

@ -1,31 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/* Linker script for Olimex LPC-P1343 (LPC1343FBD48, 32K flash, 8K SRAM). */
/* Define memory regions. */
MEMORY
{
rom (rx) : ORIGIN = 0x00000000, LENGTH = 32K
ram (rwx) : ORIGIN = 0x10000000, LENGTH = 8K
}
/* Include the common ld script. */
INCLUDE libopencm3_lpc13xx.ld

25
examples/lpc13xx/lpc-p1343/miniblink/Makefile
View File

@ -1,25 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
BINARY = miniblink
LDSCRIPT = ../lpc-p1343.ld
include ../../Makefile.include

10
examples/lpc13xx/lpc-p1343/miniblink/README
View File

@ -1,10 +0,0 @@
------------------------------------------------------------------------------
README
------------------------------------------------------------------------------
This is the smallest-possible example program using libopencm3.
It's intended for the NXP LPC1343-based Olimex LPC-1343 eval board (see
http://olimex.com/dev/lpc-p1343.html for details). It should blink
a LED on the board.

46
examples/lpc13xx/lpc-p1343/miniblink/miniblink.c
View File

@ -1,46 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
// #include <libopencm3/lpc13xx/rcc.h>
#include <libopencm3/lpc13xx/gpio.h>
static void gpio_setup(void)
{
GPIO3_DIR |= (1 << 0); /* Configure P3_0 as output. */
}
int main(void)
{
int i;
gpio_setup();
/* Blink LED0 (P3_0) on the board. */
while (1) {
/* Manually: */
GPIO3_DATA |= (1 << 0); /* LED off */
for (i = 0; i < 800000; i++) /* Wait a bit. */
__asm__("nop");
GPIO3_DATA &= ~(1 << 0); /* LED on */
for (i = 0; i < 800000; i++) /* Wait a bit. */
__asm__("nop");
}
return 0;
}

137
examples/lpc17xx/Makefile.include
View File

@ -1,137 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
## Copyright (C) 2010 Piotr Esden-Tempski <piotr@esden.net>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
PREFIX ?= arm-none-eabi
#PREFIX ?= arm-elf
CC = $(PREFIX)-gcc
LD = $(PREFIX)-gcc
OBJCOPY = $(PREFIX)-objcopy
OBJDUMP = $(PREFIX)-objdump
TOOLCHAIN_DIR ?= ../../../..
ifeq ($(wildcard ../../../../lib/libopencm3_lpc17xx.a),)
ifneq ($(strip $(shell which $(CC))),)
TOOLCHAIN_DIR := $(shell dirname `which $(CC)`)/../$(PREFIX)
endif
else
ifeq ($(V),1)
$(info We seem to be building the example in the source directory. Using local library!)
endif
endif
CFLAGS += -O0 -g \
-Wall -Wextra -Wimplicit-function-declaration \
-Wredundant-decls -Wmissing-prototypes -Wstrict-prototypes \
-Wundef -Wshadow \
-I$(TOOLCHAIN_DIR)/include -fno-common \
-mcpu=cortex-m3 -mthumb -MD -DLPC17XX
LDSCRIPT ?= $(BINARY).ld
LDFLAGS += -L$(TOOLCHAIN_DIR)/lib \
-T$(LDSCRIPT) -nostartfiles -Wl,--gc-sections
OBJS += $(BINARY).o
OOCD ?= openocd
OOCD_INTERFACE ?= flossjtag
OOCD_BOARD ?= olimex_stm32_h103
# FIXME
# Be silent per default, but 'make V=1' will show all compiler calls.
ifneq ($(V),1)
Q := @
NULL := 2>/dev/null
else
LDFLAGS += -Wl,--print-gc-sections
endif
.SUFFIXES: .elf .bin .hex .srec .list .images
.SECONDEXPANSION:
.SECONDARY:
all: images
images: $(BINARY).images
flash: $(BINARY).flash
%.images: %.bin %.hex %.srec %.list
@#echo "*** $* images generated ***"
%.bin: %.elf
@#printf " OBJCOPY $(*).bin\n"
$(Q)$(OBJCOPY) -Obinary $(*).elf $(*).bin
%.hex: %.elf
@#printf " OBJCOPY $(*).hex\n"
$(Q)$(OBJCOPY) -Oihex $(*).elf $(*).hex
%.srec: %.elf
@#printf " OBJCOPY $(*).srec\n"
$(Q)$(OBJCOPY) -Osrec $(*).elf $(*).srec
%.list: %.elf
@#printf " OBJDUMP $(*).list\n"
$(Q)$(OBJDUMP) -S $(*).elf > $(*).list
%.elf: $(OBJS) $(LDSCRIPT) $(TOOLCHAIN_DIR)/lib/libopencm3_lpc17xx.a
@#printf " LD $(subst $(shell pwd)/,,$(@))\n"
$(Q)$(LD) $(LDFLAGS) -o $(*).elf $(OBJS) -lopencm3_lpc17xx
%.o: %.c Makefile
@#printf " CC $(subst $(shell pwd)/,,$(@))\n"
$(Q)$(CC) $(CFLAGS) -o $@ -c $<
clean:
$(Q)rm -f *.o
$(Q)rm -f *.d
$(Q)rm -f *.elf
$(Q)rm -f *.bin
$(Q)rm -f *.hex
$(Q)rm -f *.srec
$(Q)rm -f *.list
# FIXME: Replace STM32 stuff with proper LPC13XX OpenOCD support later.
ifeq ($(OOCD_SERIAL),)
%.flash: %.hex
@printf " FLASH $<\n"
@# IMPORTANT: Don't use "resume", only "reset" will work correctly!
$(Q)$(OOCD) -f interface/$(OOCD_INTERFACE).cfg \
-f board/$(OOCD_BOARD).cfg \
-c "init" -c "reset init" \
-c "stm32x mass_erase 0" \
-c "flash write_image $(*).hex" \
-c "reset" \
-c "shutdown" $(NULL)
else
%.flash: %.hex
@printf " FLASH $<\n"
@# IMPORTANT: Don't use "resume", only "reset" will work correctly!
$(Q)$(OOCD) -f interface/$(OOCD_INTERFACE).cfg \
-f board/$(OOCD_BOARD).cfg \
-c "ft2232_serial $(OOCD_SERIAL)" \
-c "init" -c "reset init" \
-c "stm32x mass_erase 0" \
-c "flash write_image $(*).hex" \
-c "reset" \
-c "shutdown" $(NULL)
endif
.PHONY: images clean
-include $(OBJS:.o=.d)

32
examples/lpc17xx/blueboard-lpc1768-h/blueboard-lpc1768-h.ld
View File

@ -1,32 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/* Linker script for Blueboard-LPC1768-H (LPC1768, 512K flash, 64K SRAM). */
/* Define memory regions. */
MEMORY
{
rom (rx) : ORIGIN = 0x00000000, LENGTH = 512K
ram (rwx) : ORIGIN = 0x10000000, LENGTH = 32K
ram1 (rwx) : ORIGIN = 0x2007C000, LENGTH = 16K
ram2 (rwx) : ORIGIN = 0x20080000, LENGTH = 16K
}
/* Include the common ld script. */
INCLUDE libopencm3_lpc17xx.ld

24
examples/lpc17xx/blueboard-lpc1768-h/miniblink/Makefile
View File

@ -1,24 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
BINARY = miniblink
LDSCRIPT = ../blueboard-lpc1768-h.ld
include ../../Makefile.include

9
examples/lpc17xx/blueboard-lpc1768-h/miniblink/README
View File

@ -1,9 +0,0 @@
------------------------------------------------------------------------------
README
------------------------------------------------------------------------------
This is the smallest-possible example program using libopencm3.
It's intended for the NXP LPC1768-based NGX Blueboard-LPC1768-H eval board (see
http://shop.ngxtechnologies.com/product_info.php?cPath=21&products_id=65). It should blink
a LED on the board.

52
examples/lpc17xx/blueboard-lpc1768-h/miniblink/miniblink.c
View File

@ -1,52 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libopencm3/lpc17xx/gpio.h>
static void gpio_setup(void)
{
GPIO1_DIR |= (1 << 29); /* Configure P1_29 as output. */
}
int main(void)
{
int i;
gpio_setup();
/* Blink LED0 (P3_0) on the board. */
while (1) {
/* Manually: */
//GPIO1_SET = (1 << 29); /* LED on */
//for (i = 0; i < 800000; i++) /* Wait a bit. */
// __asm__("nop");
//GPIO1_CLR = (1 << 29); /* LED off */
//for (i = 0; i < 800000; i++) /* Wait a bit. */
// __asm__("nop");
gpio_set(GPIO1, GPIOPIN29); /* LED on */
for (i = 0; i < 800000; i++) /* Wait a bit. */
__asm__("nop");
gpio_clear(GPIO1, GPIOPIN29); /* LED off */
for (i = 0; i < 800000; i++) /* Wait a bit. */
__asm__("nop");
}
return 0;
}

140
examples/lpc43xx/Makefile.include
View File

@ -1,140 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
## Copyright (C) 2010 Piotr Esden-Tempski <piotr@esden.net>
## Copyright (C) 2012 Michael Ossmann <mike@ossmann.com>
## Copyright (C) 2012 Benjamin Vernoux <titanmkd@gmail.com>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
PREFIX ?= arm-none-eabi
#PREFIX ?= arm-elf
CC = $(PREFIX)-gcc
LD = $(PREFIX)-gcc
OBJCOPY = $(PREFIX)-objcopy
OBJDUMP = $(PREFIX)-objdump
GDB = $(PREFIX)-gdb
TOOLCHAIN_DIR ?= ../../../..
ifeq ($(wildcard ../../../../lib/libopencm3_lpc43xx.a),)
ifneq ($(strip $(shell which $(CC))),)
TOOLCHAIN_DIR := $(shell dirname `which $(CC)`)/../$(PREFIX)
endif
else
ifeq ($(V),1)
$(info We seem to be building the example in the source directory. Using local library!)
endif
endif
CFLAGS += -O2 -g \
-Wall -Wextra -Wimplicit-function-declaration \
-Wredundant-decls -Wmissing-prototypes -Wstrict-prototypes \
-Wundef -Wshadow \
-I$(TOOLCHAIN_DIR)/include -fno-common \
-mcpu=cortex-m4 -mthumb -MD \
-mfloat-abi=hard -mfpu=fpv4-sp-d16 -DLPC43XX
LDSCRIPT ?= $(BINARY).ld
LDFLAGS += -L$(TOOLCHAIN_DIR)/lib \
-T$(LDSCRIPT) -nostartfiles -Wl,--gc-sections -Xlinker -Map=$(BINARY).map
OBJS += $(BINARY).o
OOCD ?= openocd
OOCD_INTERFACE ?= flossjtag
OOCD_BOARD ?= olimex_stm32_h103
# Be silent per default, but 'make V=1' will show all compiler calls.
ifneq ($(V),1)
Q := @
NULL := 2>/dev/null
else
LDFLAGS += -Wl,--print-gc-sections
endif
.SUFFIXES: .elf .bin .hex .srec .list .images
.SECONDEXPANSION:
.SECONDARY:
all: images
images: $(BINARY).images
flash: $(BINARY).flash
%.images: %.bin %.hex %.srec %.list
@#echo "*** $* images generated ***"
%.bin: %.elf
@#printf " OBJCOPY $(*).bin\n"
$(Q)$(OBJCOPY) -Obinary $(*).elf $(*).bin
%.hex: %.elf
@#printf " OBJCOPY $(*).hex\n"
$(Q)$(OBJCOPY) -Oihex $(*).elf $(*).hex
%.srec: %.elf
@#printf " OBJCOPY $(*).srec\n"
$(Q)$(OBJCOPY) -Osrec $(*).elf $(*).srec
%.list: %.elf
@#printf " OBJDUMP $(*).list\n"
$(Q)$(OBJDUMP) -S $(*).elf > $(*).list
%.elf: $(OBJS) $(LDSCRIPT) $(TOOLCHAIN_DIR)/lib/libopencm3_lpc43xx.a
@#printf " LD $(subst $(shell pwd)/,,$(@))\n"
$(Q)$(LD) $(LDFLAGS) -o $(*).elf $(OBJS) -lopencm3_lpc43xx
%.o: %.c Makefile
@#printf " CC $(subst $(shell pwd)/,,$(@))\n"
$(Q)$(CC) $(CFLAGS) -o $@ -c $<
clean:
$(Q)rm -f *.o
$(Q)rm -f *.d
$(Q)rm -f *.elf
$(Q)rm -f *.bin
$(Q)rm -f *.hex
$(Q)rm -f *.srec
$(Q)rm -f *.list
$(Q)rm -f *.map
# FIXME: Replace STM32 stuff with proper LPC43XX OpenOCD support later.
ifeq ($(OOCD_SERIAL),)
%.flash: %.hex
@printf " FLASH $<\n"
@# IMPORTANT: Don't use "resume", only "reset" will work correctly!
$(Q)$(OOCD) -f interface/$(OOCD_INTERFACE).cfg \
-f board/$(OOCD_BOARD).cfg \
-c "init" -c "reset init" \
-c "stm32x mass_erase 0" \
-c "flash write_image $(*).hex" \
-c "reset" \
-c "shutdown" $(NULL)
else
%.flash: %.hex
@printf " FLASH $<\n"
@# IMPORTANT: Don't use "resume", only "reset" will work correctly!
$(Q)$(OOCD) -f interface/$(OOCD_INTERFACE).cfg \
-f board/$(OOCD_BOARD).cfg \
-c "ft2232_serial $(OOCD_SERIAL)" \
-c "init" -c "reset init" \
-c "stm32x mass_erase 0" \
-c "flash write_image $(*).hex" \
-c "reset" \
-c "shutdown" $(NULL)
endif
.PHONY: images clean
-include $(OBJS:.o=.d)

3
examples/lpc43xx/diolan-lpc-4350-db1/README
View File

@ -1,3 +0,0 @@
These example programs are written for the Diolan LPC-4350-DB1:
http://www.diolan.com/lpc4350-features.html

32
examples/lpc43xx/diolan-lpc-4350-db1/diolan-lpc-4350-db1.ld
View File

@ -1,32 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/* Linker script for HackRF Jellybean (LPC4330, 1M SPI flash, 64K SRAM). */
/* Define memory regions. */
MEMORY
{
/* rom is really the shadow region that points to SPI flash or elsewhere */
rom (rx) : ORIGIN = 0x00000000, LENGTH = 1M
ram (rwx) : ORIGIN = 0x10000000, LENGTH = 128K
/* there are some additional RAM regions */
}
/* Include the common ld script. */
INCLUDE libopencm3_lpc43xx.ld

24
examples/lpc43xx/diolan-lpc-4350-db1/miniblink/Makefile
View File

@ -1,24 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
BINARY = miniblink
LDSCRIPT = ../diolan-lpc-4350-db1.ld
include ../../Makefile.include

11
examples/lpc43xx/diolan-lpc-4350-db1/miniblink/README
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@ -1,11 +0,0 @@
------------------------------------------------------------------------------
README
------------------------------------------------------------------------------
This is the smallest-possible example program using libopencm3.
It's intended for the Diolan LPC-4350-DB1:
http://www.diolan.com/lpc4350-features.html
It should blink D2 on the board.

46
examples/lpc43xx/diolan-lpc-4350-db1/miniblink/miniblink.c
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@ -1,46 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
* Copyright (C) 2012 Michael Ossmann <mike@ossmann.com>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libopencm3/lpc43xx/gpio.h>
static void gpio_setup(void)
{
GPIO0_DIR |= (1 << 5); /* Configure GPIO0[5] (P6_6) as output. */
}
int main(void)
{
int i;
gpio_setup();
/* Blink D2 on the board. */
while (1) {
gpio_set(GPIO0, GPIOPIN5); /* LED on */
for (i = 0; i < 800000; i++) /* Wait a bit. */
__asm__("nop");
gpio_clear(GPIO0, GPIOPIN5); /* LED off */
for (i = 0; i < 800000; i++) /* Wait a bit. */
__asm__("nop");
}
return 0;
}

4
examples/lpc43xx/hackrf-jellybean/README
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@ -1,4 +0,0 @@
These example programs are written for the Jellybean development board from the
HackRF project:
https://github.com/mossmann/hackrf

24
examples/lpc43xx/hackrf-jellybean/i2c/Makefile
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@ -1,24 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
BINARY = i2cdemo
LDSCRIPT = ../jellybean-lpc4330.ld
include ../../Makefile.include

15
examples/lpc43xx/hackrf-jellybean/i2c/README
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@ -1,15 +0,0 @@
------------------------------------------------------------------------------
README
------------------------------------------------------------------------------
This program exercises the I2C peripheral on Jellybean's LPC43xx. You can
scope SCL on P6 pin 3 and SDA on P6 pin 5. If Lemondrop is connected, LED1
will illuminate if I2C communication to the Si5351C on Lemondrop is successful.
Required Lemondrop -> Jellybean connections:
SCL: Lemondrop P7 pin 3 -> Jellybean P6 pin 3
SDA: Lemondrop P7 pin 5 -> Jellybean P6 pin 5
VCC: Lemondrop P4 pin 2, 4, or 6 -> Jellybean P17 pin 2, 4, or 6
1V8: Lemondrop P11 pin 2, 4, or 6 -> Jellybean P16 pin 2, 4, or 6
GND: Lemondrop P5 -> Jellybean P13

108
examples/lpc43xx/hackrf-jellybean/i2c/i2cdemo.c
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@ -1,108 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
* Copyright (C) 2012 Michael Ossmann <mike@ossmann.com>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libopencm3/lpc43xx/gpio.h>
#include <libopencm3/lpc43xx/i2c.h>
#include "../jellybean_conf.h"
static void gpio_setup(void)
{
/* Configure SCU Pin Mux as GPIO */
scu_pinmux(SCU_PINMUX_LED1, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_LED2, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_LED3, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_EN1V8, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_BOOT0, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_BOOT1, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_BOOT2, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_BOOT3, SCU_GPIO_FAST);
/* Configure all GPIO as Input (safe state) */
GPIO0_DIR = 0;
GPIO1_DIR = 0;
GPIO2_DIR = 0;
GPIO3_DIR = 0;
GPIO4_DIR = 0;
GPIO5_DIR = 0;
GPIO6_DIR = 0;
GPIO7_DIR = 0;
/* Configure GPIO as Output */
GPIO2_DIR |= (PIN_LED1|PIN_LED2|PIN_LED3); /* Configure GPIO2[1/2/8] (P4_1/2 P6_12) as output. */
GPIO3_DIR |= PIN_EN1V8; /* GPIO3[6] on P6_10 as output. */
}
#define SI5351C_I2C_ADDR (0x60 << 1)
/* write to single register */
/* Not used!
static void si5351c_write_reg(uint8_t reg, uint8_t val)
{
i2c0_tx_start();
i2c0_tx_byte(SI5351C_I2C_ADDR | I2C_WRITE);
i2c0_tx_byte(reg);
i2c0_tx_byte(val);
i2c0_stop();
}
*/
/* read single register */
static uint8_t si5351c_read_reg(uint8_t reg)
{
uint8_t val;
/* set register address with write */
i2c0_tx_start();
i2c0_tx_byte(SI5351C_I2C_ADDR | I2C_WRITE);
i2c0_tx_byte(reg);
/* read the value */
i2c0_tx_start();
i2c0_tx_byte(SI5351C_I2C_ADDR | I2C_READ);
val = i2c0_rx_byte();
i2c0_stop();
return val;
}
int main(void)
{
int i;
gpio_setup();
i2c0_init();
gpio_set(PORT_EN1V8, PIN_EN1V8); /* 1V8 on */
while (1) {
if (si5351c_read_reg(0) == 0x10)
gpio_set(GPIO2, GPIOPIN1); /* LED on */
else
gpio_clear(GPIO2, GPIOPIN1); /* LED off */
for (i = 0; i < 1000; i++) /* Wait a bit. */
__asm__("nop");
}
return 0;
}

32
examples/lpc43xx/hackrf-jellybean/jellybean-lpc4330.ld
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@ -1,32 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/* Linker script for HackRF Jellybean (LPC4330, 1M SPI flash, 264K SRAM). */
/* Define memory regions. */
MEMORY
{
/* rom is really the shadow region that points to SPI flash or elsewhere */
rom (rx) : ORIGIN = 0x00000000, LENGTH = 1M
ram (rwx) : ORIGIN = 0x10000000, LENGTH = 128K
/* there are some additional RAM regions */
}
/* Include the common ld script. */
INCLUDE libopencm3_lpc43xx.ld

36
examples/lpc43xx/hackrf-jellybean/jellybean-lpc4330_rom_to_ram.ld
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@ -1,36 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
* Copyright (C) 2012 Benjamin Vernoux <titanmkd@gmail.com>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/* Linker script for HackRF Jellybean (LPC4330, 1M SPI flash, 264K SRAM). */
/* Define memory regions. */
MEMORY
{
/* Physical address in Flash used to copy Code from Flash to RAM */
rom_flash (rx) : ORIGIN = 0x80000000, LENGTH = 1M
/* rom is really the shadow region that points to SPI flash or elsewhere */
rom (rx) : ORIGIN = 0x00000000, LENGTH = 1M
ram (rwx) : ORIGIN = 0x10000000, LENGTH = 128K
/* there are some additional RAM regions for data */
ram_data (rw) : ORIGIN = 0x10080000, LENGTH = 72K
}
/* Include the common ld script. */
INCLUDE libopencm3_lpc43xx_rom_to_ram.ld

85
examples/lpc43xx/hackrf-jellybean/jellybean_conf.h
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@ -1,85 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2012 Benjamin Vernoux <titanmkd@gmail.com>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __JELLYBEAN_CONF_H
#define __JELLYBEAN_CONF_H
#ifdef __cplusplus
extern "C"
{
#endif
#include <libopencm3/lpc43xx/scu.h>
/*
* JellyBean SCU PinMux
*/
/* GPIO Output PinMux */
#define SCU_PINMUX_LED1 (P4_1) /* GPIO2[1] on P4_1 */
#define SCU_PINMUX_LED2 (P4_2) /* GPIO2[2] on P4_2 */
#define SCU_PINMUX_LED3 (P6_12) /* GPIO2[8] on P6_12 */
#define SCU_PINMUX_EN1V8 (P6_10) /* GPIO3[6] on P6_10 */
/* GPIO Input PinMux */
#define SCU_PINMUX_BOOT0 (P1_1) /* GPIO0[8] on P1_1 */
#define SCU_PINMUX_BOOT1 (P1_2) /* GPIO0[9] on P1_2 */
#define SCU_PINMUX_BOOT2 (P2_8) /* GPIO5[7] on P2_8 */
#define SCU_PINMUX_BOOT3 (P2_9) /* GPIO1[10] on P2_9 */
/* SSP1 Peripheral PinMux */
#define SCU_SSP1_MISO (P1_3) /* P1_3 */
#define SCU_SSP1_MOSI (P1_4) /* P1_4 */
#define SCU_SSP1_SCK (P1_19) /* P1_19 */
#define SCU_SSP1_SSEL (P1_20) /* P1_20 */
/* TODO add other Pins */
/*
* JellyBean GPIO Pin
*/
/* GPIO Output */
#define PIN_LED1 (BIT1) /* GPIO2[1] on P4_1 */
#define PIN_LED2 (BIT2) /* GPIO2[2] on P4_2 */
#define PIN_LED3 (BIT8) /* GPIO2[8] on P6_12 */
#define PORT_LED1_3 (GPIO2) /* PORT for LED1, 2 & 3 */
#define PIN_EN1V8 (BIT6) /* GPIO3[6] on P6_10 */
#define PORT_EN1V8 (GPIO3)
/* GPIO Input */
#define PIN_BOOT0 (BIT8) /* GPIO0[8] on P1_1 */
#define PIN_BOOT1 (BIT9) /* GPIO0[9] on P1_2 */
#define PIN_BOOT2 (BIT7) /* GPIO5[7] on P2_8 */
#define PIN_BOOT3 (BIT10) /* GPIO1[10] on P2_9 */
/* Read GPIO Pin */
#define BOOT0_STATE ( (GPIO0_PIN & PIN_BOOT0)==PIN_BOOT0 )
#define BOOT1_STATE ( (GPIO0_PIN & PIN_BOOT1)==PIN_BOOT1 )
#define BOOT2_STATE ( (GPIO5_PIN & PIN_BOOT2)==PIN_BOOT2 )
#define BOOT3_STATE ( (GPIO1_PIN & PIN_BOOT3)==PIN_BOOT3 )
/* TODO add other Pins */
#ifdef __cplusplus
}
#endif
#endif

24
examples/lpc43xx/hackrf-jellybean/miniblink/Makefile
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@ -1,24 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
BINARY = miniblink
LDSCRIPT = ../jellybean-lpc4330.ld
include ../../Makefile.include

11
examples/lpc43xx/hackrf-jellybean/miniblink/README
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@ -1,11 +0,0 @@
------------------------------------------------------------------------------
README
------------------------------------------------------------------------------
This is the smallest-possible example program using libopencm3.
It's intended for the Jellybean development board from the HackRF project:
https://github.com/mossmann/hackrf
It should blink LED1 on the board.

82
examples/lpc43xx/hackrf-jellybean/miniblink/miniblink.c
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@ -1,82 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
* Copyright (C) 2012 Michael Ossmann <mike@ossmann.com>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libopencm3/lpc43xx/gpio.h>
#include <libopencm3/lpc43xx/scu.h>
#include "../jellybean_conf.h"
static void gpio_setup(void)
{
/* Configure SCU Pin Mux as GPIO */
scu_pinmux(SCU_PINMUX_LED1, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_LED2, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_LED3, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_EN1V8, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_BOOT0, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_BOOT1, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_BOOT2, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_BOOT3, SCU_GPIO_FAST);
/* Configure all GPIO as Input (safe state) */
GPIO0_DIR = 0;
GPIO1_DIR = 0;
GPIO2_DIR = 0;
GPIO3_DIR = 0;
GPIO4_DIR = 0;
GPIO5_DIR = 0;
GPIO6_DIR = 0;
GPIO7_DIR = 0;
/* Configure GPIO as Output */
GPIO2_DIR |= (PIN_LED1|PIN_LED2|PIN_LED3); /* Configure GPIO2[1/2/8] (P4_1/2 P6_12) as output. */
GPIO3_DIR |= PIN_EN1V8; /* GPIO3[6] on P6_10 as output. */
}
u32 boot0, boot1, boot2, boot3;
int main(void)
{
int i;
gpio_setup();
/* Set 1V8 */
gpio_set(PORT_EN1V8, PIN_EN1V8);
/* Blink LED1/2/3 on the board and Read BOOT0/1/2/3 pins. */
while (1)
{
boot0 = BOOT0_STATE;
boot1 = BOOT1_STATE;
boot2 = BOOT2_STATE;
boot3 = BOOT3_STATE;
gpio_set(PORT_LED1_3, (PIN_LED1|PIN_LED2|PIN_LED3)); /* LEDs on */
for (i = 0; i < 2000000; i++) /* Wait a bit. */
__asm__("nop");
gpio_clear(PORT_LED1_3, (PIN_LED1|PIN_LED2|PIN_LED3)); /* LED off */
for (i = 0; i < 2000000; i++) /* Wait a bit. */
__asm__("nop");
}
return 0;
}

24
examples/lpc43xx/hackrf-jellybean/miniblink_rom_to_ram/Makefile
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@ -1,24 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
BINARY = miniblink
LDSCRIPT = ../jellybean-lpc4330_rom_to_ram.ld
include ../../Makefile.include

12
examples/lpc43xx/hackrf-jellybean/miniblink_rom_to_ram/README
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@ -1,12 +0,0 @@
------------------------------------------------------------------------------
README
------------------------------------------------------------------------------
This is the smallest-possible example program using libopencm3.
It's intended for the Jellybean development board from the HackRF project:
https://github.com/mossmann/hackrf
It should blink LED1 on the board.
This example copy the Code from ROM to RAM and execute code from RAM.

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examples/lpc43xx/hackrf-jellybean/miniblink_rom_to_ram/miniblink.c
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/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
* Copyright (C) 2012 Michael Ossmann <mike@ossmann.com>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libopencm3/lpc43xx/gpio.h>
#include <libopencm3/lpc43xx/scu.h>
#include "../jellybean_conf.h"
static void gpio_setup(void)
{
/* Configure SCU Pin Mux as GPIO */
scu_pinmux(SCU_PINMUX_LED1, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_LED2, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_LED3, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_EN1V8, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_BOOT0, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_BOOT1, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_BOOT2, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_BOOT3, SCU_GPIO_FAST);
/* Configure all GPIO as Input (safe state) */
GPIO0_DIR = 0;
GPIO1_DIR = 0;
GPIO2_DIR = 0;
GPIO3_DIR = 0;
GPIO4_DIR = 0;
GPIO5_DIR = 0;
GPIO6_DIR = 0;
GPIO7_DIR = 0;
/* Configure GPIO as Output */
GPIO2_DIR |= (PIN_LED1|PIN_LED2|PIN_LED3); /* Configure GPIO2[1/2/8] (P4_1/2 P6_12) as output. */
GPIO3_DIR |= PIN_EN1V8; /* GPIO3[6] on P6_10 as output. */
}
u32 boot0, boot1, boot2, boot3;
int main(void)
{
int i;
gpio_setup();
/* Set 1V8 */
gpio_set(PORT_EN1V8, PIN_EN1V8);
/* Blink LED1/2/3 on the board and Read BOOT0/1/2/3 pins. */
while (1)
{
boot0 = BOOT0_STATE;
boot1 = BOOT1_STATE;
boot2 = BOOT2_STATE;
boot3 = BOOT3_STATE;
gpio_set(PORT_LED1_3, (PIN_LED1|PIN_LED2|PIN_LED3)); /* LEDs on */
for (i = 0; i < 2000000; i++) /* Wait a bit. */
__asm__("nop");
gpio_clear(PORT_LED1_3, (PIN_LED1|PIN_LED2|PIN_LED3)); /* LED off */
for (i = 0; i < 2000000; i++) /* Wait a bit. */
__asm__("nop");
}
return 0;
}

24
examples/lpc43xx/hackrf-jellybean/ssp/Makefile
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@ -1,24 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
BINARY = sspdemo
LDSCRIPT = ../jellybean-lpc4330.ld
include ../../Makefile.include

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examples/lpc43xx/hackrf-jellybean/ssp/README
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@ -1,48 +0,0 @@
------------------------------------------------------------------------------
README
------------------------------------------------------------------------------
This program exercises the SSP1 peripheral on Jellybean's LPC43xx.
Jellybean (connector)
P9 SPI
|-----------------|
| Pin2 Pin4 Pin6 |
||------| |
|| Pin1 |Pin3 Pin5 |
||------|----------|
|-------|
SSP1_MISO: Jellybean P9 SPI Pin6
SSP1_MOSI: Jellybean P9 SPI Pin4
SSP1_SCK: Jellybean P9 SPI Pin2
SSP1_SSEL: Jellybean P9 SPI Pin3
GND: Can be connected to P12 SD Pin1
PCLK clock source is PLL1 288MHz (from IRC 96MHz boot from SPIFI)
Freq = PCLK / (CPSDVSR * [SCR+1]).
By default (CPSDVSR=0 => Means MAX Divisor)
SSP1->CR0->SCR = 0x00 => CLK Freq 1.126MHz
SSP1->CR0->SCR = 0x01 => MOSI Freq 566.9KHz
...
Test Oscilloscpe:
SCR=0, CPSDVSR=32 => CLK 9.025MHz
SCR=1, CPSDVSR=2 => CLK 73MHz
SCR=2, CPSDVSR=2 => CLK 49MHz
SCR=4, CPSDVSR=2 => CLK 29MHz
SCR=8, CPSDVSR=2 => CLK 16MHz
SCR=16, CPSDVSR=2 => CLK 8.5MHz
SCR=32, CPSDVSR=2 => CLK 4.386MHz
SCR=64, CPSDVSR=2 => CLK 2.227MHz
SCR=1, CPSDVSR=64 => CLK 2.262MHz
Theory:
SCR=0, CPSDVSR=32 => 288MHz / (32*(0+1) = 9MHz
SCR=1, CPSDVSR=2 => 288MHz / (2*(1+1) = 72MHz
SCR=4, CPSDVSR=2 => 288MHz / (2*(4+1) = 28.8MHz
SCR=32, CPSDVSR=2 => 288MHz / (2*(32+1) = 4.364MHz
SCR=64, CPSDVSR=2 => 288MHz / (2*(64+1)) = 2.2154MHz
SCR=128, CPSDVSR=2 => 288MHz / (2*(128+1)) = 1.116MHz
SCR=1, CPSDVSR=64 => 288MHz / (64*(1+1)) = 2.25MHz

102
examples/lpc43xx/hackrf-jellybean/ssp/sspdemo.c
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@ -1,102 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2012 Benjamin Vernoux <titanmkd@gmail.com>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libopencm3/lpc43xx/gpio.h>
#include <libopencm3/lpc43xx/scu.h>
#include <libopencm3/lpc43xx/cgu.h>
#include <libopencm3/lpc43xx/ssp.h>
#include "../jellybean_conf.h"
static void gpio_setup(void)
{
/* Configure all GPIO as Input (safe state) */
GPIO0_DIR = 0;
GPIO1_DIR = 0;
GPIO2_DIR = 0;
GPIO3_DIR = 0;
GPIO4_DIR = 0;
GPIO5_DIR = 0;
GPIO6_DIR = 0;
GPIO7_DIR = 0;
/* Configure SCU Pin Mux as GPIO */
scu_pinmux(SCU_PINMUX_LED1, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_LED2, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_LED3, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_EN1V8, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_BOOT0, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_BOOT1, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_BOOT2, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_BOOT3, SCU_GPIO_FAST);
/* Configure SSP1 Peripheral (to be moved later in SSP driver) */
scu_pinmux(SCU_SSP1_MISO, (SCU_SSP_IO | SCU_CONF_FUNCTION5));
scu_pinmux(SCU_SSP1_MOSI, (SCU_SSP_IO | SCU_CONF_FUNCTION5));
scu_pinmux(SCU_SSP1_SCK, (SCU_SSP_IO | SCU_CONF_FUNCTION1));
scu_pinmux(SCU_SSP1_SSEL, (SCU_SSP_IO | SCU_CONF_FUNCTION1));
/* Configure GPIO as Output */
GPIO2_DIR |= (PIN_LED1|PIN_LED2|PIN_LED3); /* Configure GPIO2[1/2/8] (P4_1/2 P6_12) as output. */
GPIO3_DIR |= PIN_EN1V8; /* GPIO3[6] on P6_10 as output. */
}
int main(void)
{
int i;
u8 ssp_val;
u8 serial_clock_rate;
u8 clock_prescale_rate;
gpio_setup();
/* Freq About 1.12MHz => Freq = PCLK / (CPSDVSR * [SCR+1]) with PCLK=PLL1=288MHz */
clock_prescale_rate = 2;
serial_clock_rate = 128;
ssp_init(SSP1_NUM,
SSP_DATA_8BITS,
SSP_FRAME_SPI,
SSP_CPOL_0_CPHA_0,
serial_clock_rate,
clock_prescale_rate,
SSP_MODE_NORMAL,
SSP_MASTER,
SSP_SLAVE_OUT_ENABLE);
ssp_val = 0x0;
while (1) {
ssp_write(SSP1_NUM, (u16)ssp_val);
gpio_set(GPIO2, GPIOPIN1); /* LED on */
for (i = 0; i < 1000; i++) /* Wait a bit. */
__asm__("nop");
gpio_clear(GPIO2, GPIOPIN1); /* LED off */
ssp_val++;
}
return 0;
}

24
examples/lpc43xx/hackrf-jellybean/systick/Makefile
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@ -1,24 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2012 Benjamin Vernoux <titanmkd@gmail.com>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
BINARY = systickdemo
LDSCRIPT = ../jellybean-lpc4330.ld
include ../../Makefile.include

8
examples/lpc43xx/hackrf-jellybean/systick/README
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@ -1,8 +0,0 @@
------------------------------------------------------------------------------
README
------------------------------------------------------------------------------
This program exercises the SysTick Interrupt of ARM CortexM4 on Jellybean's LPC43xx.
It also enable Cycle Counter to be used for accurate delay independant from Clock Frequency.
The Demo Use Cycle Counter and SysTick Interrupt to compute number of cycles executed per second.
The result is LED1/2 & 3 Blink with an accurate 1s Period (using SysTick) (Checked visualy and with Oscilloscope).

184
examples/lpc43xx/hackrf-jellybean/systick/systickdemo.c
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/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2012 Benjamin Vernoux <titanmkd@gmail.com>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libopencm3/lpc43xx/gpio.h>
#include <libopencm3/lpc43xx/scu.h>
#include <libopencm3/lpc43xx/cgu.h>
#include <libopencm3/cm3/nvic.h>
#include <libopencm3/cm3/systick.h>
#include <libopencm3/cm3/scs.h>
#include "../jellybean_conf.h"
/* Global counter incremented by SysTick Interrupt each millisecond */
volatile u32 g_ulSysTickCount;
u32 g_NbCyclePerSecond;
static void gpio_setup(void)
{
/* Configure all GPIO as Input (safe state) */
GPIO0_DIR = 0;
GPIO1_DIR = 0;
GPIO2_DIR = 0;
GPIO3_DIR = 0;
GPIO4_DIR = 0;
GPIO5_DIR = 0;
GPIO6_DIR = 0;
GPIO7_DIR = 0;
/* Configure SCU Pin Mux as GPIO */
scu_pinmux(SCU_PINMUX_LED1, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_LED2, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_LED3, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_EN1V8, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_BOOT0, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_BOOT1, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_BOOT2, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_BOOT3, SCU_GPIO_FAST);
/* Configure SSP1 Peripheral (to be moved later in SSP driver) */
scu_pinmux(SCU_SSP1_MISO, (SCU_SSP_IO | SCU_CONF_FUNCTION5));
scu_pinmux(SCU_SSP1_MOSI, (SCU_SSP_IO | SCU_CONF_FUNCTION5));
scu_pinmux(SCU_SSP1_SCK, (SCU_SSP_IO | SCU_CONF_FUNCTION1));
scu_pinmux(SCU_SSP1_SSEL, (SCU_SSP_IO | SCU_CONF_FUNCTION1));
/* Configure GPIO as Output */
GPIO2_DIR |= (PIN_LED1|PIN_LED2|PIN_LED3); /* Configure GPIO2[1/2/8] (P4_1/2 P6_12) as output. */
GPIO3_DIR |= PIN_EN1V8; /* GPIO3[6] on P6_10 as output. */
}
static void systick_setup(void)
{
u32 systick_reload_val;
g_ulSysTickCount = 0;
/* Disable IRQ globally */
asm volatile ("cpsid i");
/* Set processor Clock as Source Clock */
systick_set_clocksource(STK_CTRL_CLKSOURCE);
/* Get SysTick calibration value to obtain by default 1 tick = 10ms */
systick_reload_val = systick_get_calib();
/*
* Calibration seems wrong on LPC43xx(TBC) for default Freq it assume System Clock is 12MHz but it is 12*8=96MHz
* Fix the Calibration value bu multiplication by 8
*/
systick_reload_val = (systick_reload_val*8);
/* To obtain 1ms per tick just divide by 10 the 10ms base tick and set the reload */
systick_reload_val = systick_reload_val/10;
systick_set_reload(systick_reload_val);
systick_interrupt_enable();
/* Start counting. */
systick_counter_enable();
/* Set SysTick Priority to maximum */
nvic_set_priority(NVIC_SYSTICK_IRQ, 0xFF);
/* Enable IRQ globally */
asm volatile ("cpsie i");
}
static void scs_dwt_cycle_counter_enabled(void)
{
SCS_DEMCR |= SCS_DEMCR_TRCENA;
SCS_DWT_CTRL |= SCS_DWT_CTRL_CYCCNTENA;
}
static u32 sys_tick_get_time_ms(void)
{
return g_ulSysTickCount;
}
static u32 sys_tick_delta_time_ms(u32 start, u32 end)
{
#define MAX_T_U32 ((2^32)-1)
u32 diff;
if(end > start)
{
diff=end-start;
}else
{
diff=MAX_T_U32-(start-end)+1;
}
return diff;
}
static void sys_tick_wait_time_ms(u32 wait_ms)
{
u32 start, end;
u32 tickms;
start = sys_tick_get_time_ms();
do
{
end = sys_tick_get_time_ms();
tickms = sys_tick_delta_time_ms(start, end);
}while(tickms < wait_ms);
}
/* Called each 1ms/1000Hz by interrupt
1) Count the number of cycle per second.
2) Increment g_ulSysTickCount counter.
*/
void sys_tick_handler(void)
{
if(g_ulSysTickCount==0)
{
/* Clear Cycle Counter*/
SCS_DWT_CYCCNT = 0;
}else if(g_ulSysTickCount==1000)
{
/* Capture number of cycle elapsed during 1 second */
g_NbCyclePerSecond = SCS_DWT_CYCCNT;
}
g_ulSysTickCount++;
}
int main(void)
{
systick_setup();
gpio_setup();
/* SCS & Cycle Counter enabled (used to count number of cycles executed per second see g_NbCyclePerSecond */
scs_dwt_cycle_counter_enabled();
while (1)
{
gpio_set(PORT_LED1_3, (PIN_LED1|PIN_LED2|PIN_LED3)); /* LEDs on */
sys_tick_wait_time_ms(500);
gpio_clear(PORT_LED1_3, (PIN_LED1|PIN_LED2|PIN_LED3)); /* LED off */
sys_tick_wait_time_ms(500);
}
return 0;
}

172
examples/stm32/f1/Makefile.include
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@ -1,172 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
## Copyright (C) 2010 Piotr Esden-Tempski <piotr@esden.net>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
PREFIX ?= arm-none-eabi
#PREFIX ?= arm-elf
CC = $(PREFIX)-gcc
LD = $(PREFIX)-gcc
OBJCOPY = $(PREFIX)-objcopy
OBJDUMP = $(PREFIX)-objdump
GDB = $(PREFIX)-gdb
TOOLCHAIN_DIR ?= ../../../../..
ifeq ($(wildcard ../../../../../lib/libopencm3_stm32f1.a),)
ifneq ($(strip $(shell which $(CC))),)
TOOLCHAIN_DIR := $(shell dirname `which $(CC)`)/../$(PREFIX)
endif
else
ifeq ($(V),1)
$(info We seem to be building the example in the source directory. Using local library!)
endif
endif
ARCH_FLAGS = -mthumb -mcpu=cortex-m3 -msoft-float
CFLAGS += -Os -g \
-Wall -Wextra -Wimplicit-function-declaration \
-Wredundant-decls -Wmissing-prototypes -Wstrict-prototypes \
-Wundef -Wshadow \
-I$(TOOLCHAIN_DIR)/include \
-fno-common $(ARCH_FLAGS) -MD -DSTM32F1
LDSCRIPT ?= $(BINARY).ld
LDFLAGS += --static -Wl,--start-group -lc -lgcc -lnosys -Wl,--end-group \
-L$(TOOLCHAIN_DIR)/lib \
-T$(LDSCRIPT) -nostartfiles -Wl,--gc-sections \
$(ARCH_FLAGS) -mfix-cortex-m3-ldrd
ifneq ($(OPENCM3_DIR),)
CFLAGS += -I$(OPENCM3_DIR)/include
LDFLAGS += -L$(OPENCM3_DIR)/lib -L$(OPENCM3_DIR)/lib/stm32/f1
SCRIPT_DIR = $(OPENCM3_DIR)/share
else
SCRIPT_DIR = $(shell dirname $(shell readlink -f $(shell which $(PREFIX)-gcc)))/../$(PREFIX)/share
endif
OBJS += $(BINARY).o
OOCD ?= openocd
OOCD_INTERFACE ?= flossjtag
OOCD_BOARD ?= olimex_stm32_h103
# Black magic probe specific variables
# Set the BMP_PORT to a serial port and then BMP is used for flashing
BMP_PORT ?=
# texane/stlink can be used by uncommenting this...
# or defining it in your own makefiles
#STLINK_PORT ?= :4242
# Be silent per default, but 'make V=1' will show all compiler calls.
ifneq ($(V),1)
Q := @
NULL := 2>/dev/null
else
LDFLAGS += -Wl,--print-gc-sections
endif
.SUFFIXES: .elf .bin .hex .srec .list .images
.SECONDEXPANSION:
.SECONDARY:
all: images
images: $(BINARY).images
flash: $(BINARY).flash
%.images: %.bin %.hex %.srec %.list
@#echo "*** $* images generated ***"
%.bin: %.elf
@#printf " OBJCOPY $(*).bin\n"
$(Q)$(OBJCOPY) -Obinary $(*).elf $(*).bin
%.hex: %.elf
@#printf " OBJCOPY $(*).hex\n"
$(Q)$(OBJCOPY) -Oihex $(*).elf $(*).hex
%.srec: %.elf
@#printf " OBJCOPY $(*).srec\n"
$(Q)$(OBJCOPY) -Osrec $(*).elf $(*).srec
%.list: %.elf
@#printf " OBJDUMP $(*).list\n"
$(Q)$(OBJDUMP) -S $(*).elf > $(*).list
%.elf: $(OBJS) $(LDSCRIPT) $(TOOLCHAIN_DIR)/lib/libopencm3_stm32f1.a
@#printf " LD $(subst $(shell pwd)/,,$(@))\n"
$(Q)$(LD) -o $(*).elf $(OBJS) -lopencm3_stm32f1 $(LDFLAGS)
%.o: %.c Makefile
@#printf " CC $(subst $(shell pwd)/,,$(@))\n"
$(Q)$(CC) $(CFLAGS) -o $@ -c $<
clean:
$(Q)rm -f *.o
$(Q)rm -f *.d
$(Q)rm -f *.elf
$(Q)rm -f *.bin
$(Q)rm -f *.hex
$(Q)rm -f *.srec
$(Q)rm -f *.list
ifeq ($(STLINK_PORT),)
ifeq ($(BMP_PORT),)
ifeq ($(OOCD_SERIAL),)
%.flash: %.hex
@printf " FLASH $<\n"
@# IMPORTANT: Don't use "resume", only "reset" will work correctly!
$(Q)$(OOCD) -f interface/$(OOCD_INTERFACE).cfg \
-f board/$(OOCD_BOARD).cfg \
-c "init" -c "reset init" \
-c "stm32f1x mass_erase 0" \
-c "flash write_image $(*).hex" \
-c "reset" \
-c "shutdown" $(NULL)
else
%.flash: %.hex
@printf " FLASH $<\n"
@# IMPORTANT: Don't use "resume", only "reset" will work correctly!
$(Q)$(OOCD) -f interface/$(OOCD_INTERFACE).cfg \
-f board/$(OOCD_BOARD).cfg \
-c "ft2232_serial $(OOCD_SERIAL)" \
-c "init" -c "reset init" \
-c "stm32f1x mass_erase 0" \
-c "flash write_image $(*).hex" \
-c "reset" \
-c "shutdown" $(NULL)
endif
else
%.flash: %.elf
@echo " GDB $(*).elf (flash)"
$(Q)$(GDB) --batch \
-ex 'target extended-remote $(BMP_PORT)' \
-x $(TOOLCHAIN_DIR)/scripts/black_magic_probe_flash.scr \
$(*).elf
endif
else
%.flash: %.elf
@echo " GDB $(*).elf (flash)"
$(Q)$(GDB) --batch \
-ex 'target extended-remote $(STLINK_PORT)' \
-x $(SCRIPT_DIR)/libopencm3/scripts/stlink_flash.scr \
$(*).elf
endif
.PHONY: images clean
-include $(OBJS:.o=.d)

25
examples/stm32/f1/lisa-m-1/can/Makefile
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@ -1,25 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
BINARY = can
LDSCRIPT = ../lisa-m.ld
include ../../Makefile.include

4
examples/stm32/f1/lisa-m-1/can/README
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@ -1,4 +0,0 @@
This test sets up the CAN interface on Lisa/M and transmits 8 bites every
100ms. The first byte is being incremented in each cycle. The demo also
receives messages and is displaing the first 4 bits of the first byte on the
board LEDs.

237
examples/stm32/f1/lisa-m-1/can/can.c
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/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2010 Thomas Otto <tommi@viadmin.org>
* Copyright (C) 2010 Piotr Esden-Tempski <piotr@esden.net>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libopencm3/stm32/f1/rcc.h>
#include <libopencm3/stm32/f1/flash.h>
#include <libopencm3/stm32/f1/gpio.h>
#include <libopencm3/cm3/nvic.h>
#include <libopencm3/cm3/systick.h>
#include <libopencm3/stm32/can.h>
struct can_tx_msg {
u32 std_id;
u32 ext_id;
u8 ide;
u8 rtr;
u8 dlc;
u8 data[8];
};
struct can_rx_msg {
u32 std_id;
u32 ext_id;
u8 ide;
u8 rtr;
u8 dlc;
u8 data[8];
u8 fmi;
};
struct can_tx_msg can_tx_msg;
struct can_rx_msg can_rx_msg;
static void gpio_setup(void)
{
/* Enable Alternate Function clock. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_AFIOEN);
/* Enable GPIOA clock. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
/* Enable GPIOB clock. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN);
/* Enable GPIOC clock. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPCEN);
/* Preconfigure LEDs. */
gpio_set(GPIOA, GPIO8); /* LED0 off */
gpio_set(GPIOB, GPIO4); /* LED1 off */
gpio_set(GPIOC, GPIO15); /* LED2 off */
gpio_set(GPIOC, GPIO2); /* LED3 off */
gpio_set(GPIOC, GPIO5); /* LED4 off */
/* Configure LED GPIOOs. */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO8);
gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO4);
gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO15);
gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO2);
gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO5);
/* Configure PB4 as GPIO. */
AFIO_MAPR |= AFIO_MAPR_SWJ_CFG_FULL_SWJ_NO_JNTRST;
}
static void systick_setup(void)
{
/* 72MHz / 8 => 9000000 counts per second */
systick_set_clocksource(STK_CTRL_CLKSOURCE_AHB_DIV8);
/* 9000000/9000 = 1000 overflows per second - every 1ms one interrupt */
/* SysTick interrupt every N clock pulses: set reload to N-1 */
systick_set_reload(8999);
systick_interrupt_enable();
/* Start counting. */
systick_counter_enable();
}
static void can_setup(void)
{
/* Enable peripheral clocks. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_AFIOEN);
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN);
rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_CANEN);
AFIO_MAPR |= AFIO_MAPR_CAN1_REMAP_PORTB;
/* Configure CAN pin: RX (input pull-up). */
gpio_set_mode(GPIO_BANK_CAN1_PB_RX, GPIO_MODE_INPUT,
GPIO_CNF_INPUT_PULL_UPDOWN, GPIO_CAN1_PB_RX);
gpio_set(GPIOB, GPIO_CAN1_PB_RX);
/* Configure CAN pin: TX. */
gpio_set_mode(GPIO_BANK_CAN1_PB_TX, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO_CAN1_PB_TX);
/* NVIC setup. */
nvic_enable_irq(NVIC_USB_LP_CAN_RX0_IRQ);
nvic_set_priority(NVIC_USB_LP_CAN_RX0_IRQ, 1);
/* Reset CAN. */
can_reset(CAN1);
/* CAN cell init. */
if (can_init(CAN1,
false, /* TTCM: Time triggered comm mode? */
true, /* ABOM: Automatic bus-off management? */
false, /* AWUM: Automatic wakeup mode? */
false, /* NART: No automatic retransmission? */
false, /* RFLM: Receive FIFO locked mode? */
false, /* TXFP: Transmit FIFO priority? */
CAN_BTR_SJW_1TQ,
CAN_BTR_TS1_3TQ,
CAN_BTR_TS2_4TQ,
12, /* BRP+1: Baud rate prescaler */
false, /* loopback mode */
false)) /* silent mode */
{
gpio_set(GPIOA, GPIO8); /* LED0 off */
gpio_set(GPIOB, GPIO4); /* LED1 off */
gpio_set(GPIOC, GPIO15); /* LED2 off */
gpio_clear(GPIOC, GPIO2); /* LED3 on */
gpio_set(GPIOC, GPIO5); /* LED4 off */
/* Die because we failed to initialize. */
while (1)
__asm__("nop");
}
/* CAN filter 0 init. */
can_filter_id_mask_32bit_init(CAN1,
0, /* Filter ID */
0, /* CAN ID */
0, /* CAN ID mask */
0, /* FIFO assignment (here: FIFO0) */
true); /* Enable the filter. */
/* Enable CAN RX interrupt. */
can_enable_irq(CAN1, CAN_IER_FMPIE0);
}
void sys_tick_handler(void)
{
static int temp32 = 0;
static u8 data[8] = {0, 1, 2, 0, 0, 0, 0, 0};
/* We call this handler every 1ms so 100ms = 1s
* Resulting in 100Hz message frequency.
*/
if (++temp32 != 100)
return;
temp32 = 0;
/* Transmit CAN frame. */
data[0]++;
if (can_transmit(CAN1,
0, /* (EX/ST)ID: CAN ID */
false, /* IDE: CAN ID extended? */
false, /* RTR: Request transmit? */
8, /* DLC: Data length */
data) == -1)
{
gpio_set(GPIOA, GPIO8); /* LED0 off */
gpio_set(GPIOB, GPIO4); /* LED1 off */
gpio_set(GPIOC, GPIO15); /* LED2 off */
gpio_set(GPIOC, GPIO2); /* LED3 off */
gpio_clear(GPIOC, GPIO5); /* LED4 on */
}
}
void usb_lp_can_rx0_isr(void)
{
u32 id, fmi;
bool ext, rtr;
u8 length, data[8];
can_receive(CAN1, 0, false, &id, &ext, &rtr, &fmi, &length, data);
if (data[0] & 1)
gpio_clear(GPIOA, GPIO8);
else
gpio_set(GPIOA, GPIO8);
if (data[0] & 2)
gpio_clear(GPIOB, GPIO4);
else
gpio_set(GPIOB, GPIO4);
if (data[0] & 4)
gpio_clear(GPIOC, GPIO15);
else
gpio_set(GPIOC, GPIO15);
if (data[0] & 8)
gpio_clear(GPIOC, GPIO2);
else
gpio_set(GPIOC, GPIO2);
can_fifo_release(CAN1, 0);
}
int main(void)
{
rcc_clock_setup_in_hse_12mhz_out_72mhz();
gpio_setup();
can_setup();
systick_setup();
while (1); /* Halt. */
return 0;
}

25
examples/stm32/f1/lisa-m-1/fancyblink/Makefile
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@ -1,25 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
BINARY = fancyblink
LDSCRIPT = ../lisa-m.ld
include ../../Makefile.include

68
examples/stm32/f1/lisa-m-1/fancyblink/fancyblink.c
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@ -1,68 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
* Copyright (C) 2011 Piotr Esden-Tempski <piotr@esden.net>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libopencm3/stm32/f1/rcc.h>
#include <libopencm3/stm32/f1/gpio.h>
/* Set STM32 to 72 MHz. */
static void clock_setup(void)
{
rcc_clock_setup_in_hse_12mhz_out_72mhz();
/* Enable GPIOB, GPIOC, and AFIO clocks. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN);
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPCEN);
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_AFIOEN);
}
static void gpio_setup(void)
{
/* Set GPIO13 (in GPIO port C) to 'output push-pull'. */
gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO13);
/* Set GPIO4 (in GPIO port B) to 'output push-pull'. */
gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO4);
AFIO_MAPR |= AFIO_MAPR_SWJ_CFG_FULL_SWJ_NO_JNTRST;
/* Preconfigure the LEDs. */
gpio_set(GPIOB, GPIO4); /* Switch off LED. */
gpio_clear(GPIOC, GPIO13); /* Switch on LED. */
}
int main(void)
{
int i;
clock_setup();
gpio_setup();
/* Blink the LEDs (PC13 and PB4) on the board. */
while (1) {
gpio_toggle(GPIOC, GPIO13); /* LED on/off */
gpio_toggle(GPIOB, GPIO4); /* LED on/off */
for (i = 0; i < 800000; i++) /* Wait a bit. */
__asm__("nop");
}
return 0;
}

32
examples/stm32/f1/lisa-m-1/lisa-m.ld
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@ -1,32 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/* Linker script for Lisa-M (STM32F103RBT6, 128K flash, 20K RAM). */
/* TODO: Chip name and sizes correct? */
/* Define memory regions. */
MEMORY
{
rom (rx) : ORIGIN = 0x08000000, LENGTH = 128K
ram (rwx) : ORIGIN = 0x20000000, LENGTH = 20K
}
/* Include the common ld script. */
INCLUDE libopencm3_stm32f1.ld

25
examples/stm32/f1/lisa-m-1/usb_cdcacm/Makefile
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@ -1,25 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
BINARY = cdcacm
LDSCRIPT = ../lisa-m.ld
include ../../Makefile.include

7
examples/stm32/f1/lisa-m-1/usb_cdcacm/README
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@ -1,7 +0,0 @@
------------------------------------------------------------------------------
README
------------------------------------------------------------------------------
This example implements a USB CDC-ACM device (aka Virtual Serial Port)
to demonstrate the use of the USB device stack.

261
examples/stm32/f1/lisa-m-1/usb_cdcacm/cdcacm.c
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@ -1,261 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2010 Gareth McMullin <gareth@blacksphere.co.nz>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <libopencm3/stm32/f1/rcc.h>
#include <libopencm3/stm32/f1/gpio.h>
#include <libopencm3/usb/usbd.h>
#include <libopencm3/usb/cdc.h>
static const struct usb_device_descriptor dev = {
.bLength = USB_DT_DEVICE_SIZE,
.bDescriptorType = USB_DT_DEVICE,
.bcdUSB = 0x0200,
.bDeviceClass = USB_CLASS_CDC,
.bDeviceSubClass = 0,
.bDeviceProtocol = 0,
.bMaxPacketSize0 = 64,
.idVendor = 0x0483,
.idProduct = 0x5740,
.bcdDevice = 0x0200,
.iManufacturer = 1,
.iProduct = 2,
.iSerialNumber = 3,
.bNumConfigurations = 1,
};
/*
* This notification endpoint isn't implemented. According to CDC spec it's
* optional, but its absence causes a NULL pointer dereference in the
* Linux cdc_acm driver.
*/
static const struct usb_endpoint_descriptor comm_endp[] = {{
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = 0x83,
.bmAttributes = USB_ENDPOINT_ATTR_INTERRUPT,
.wMaxPacketSize = 16,
.bInterval = 255,
}};
static const struct usb_endpoint_descriptor data_endp[] = {{
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = 0x01,
.bmAttributes = USB_ENDPOINT_ATTR_BULK,
.wMaxPacketSize = 64,
.bInterval = 1,
}, {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = 0x82,
.bmAttributes = USB_ENDPOINT_ATTR_BULK,
.wMaxPacketSize = 64,
.bInterval = 1,
}};
static const struct {
struct usb_cdc_header_descriptor header;
struct usb_cdc_call_management_descriptor call_mgmt;
struct usb_cdc_acm_descriptor acm;
struct usb_cdc_union_descriptor cdc_union;
} __attribute__((packed)) cdcacm_functional_descriptors = {
.header = {
.bFunctionLength = sizeof(struct usb_cdc_header_descriptor),
.bDescriptorType = CS_INTERFACE,
.bDescriptorSubtype = USB_CDC_TYPE_HEADER,
.bcdCDC = 0x0110,
},
.call_mgmt = {
.bFunctionLength =
sizeof(struct usb_cdc_call_management_descriptor),
.bDescriptorType = CS_INTERFACE,
.bDescriptorSubtype = USB_CDC_TYPE_CALL_MANAGEMENT,
.bmCapabilities = 0,
.bDataInterface = 1,
},
.acm = {
.bFunctionLength = sizeof(struct usb_cdc_acm_descriptor),
.bDescriptorType = CS_INTERFACE,
.bDescriptorSubtype = USB_CDC_TYPE_ACM,
.bmCapabilities = 0,
},
.cdc_union = {
.bFunctionLength = sizeof(struct usb_cdc_union_descriptor),
.bDescriptorType = CS_INTERFACE,
.bDescriptorSubtype = USB_CDC_TYPE_UNION,
.bControlInterface = 0,
.bSubordinateInterface0 = 1,
}
};
static const struct usb_interface_descriptor comm_iface[] = {{
.bLength = USB_DT_INTERFACE_SIZE,
.bDescriptorType = USB_DT_INTERFACE,
.bInterfaceNumber = 0,
.bAlternateSetting = 0,
.bNumEndpoints = 1,
.bInterfaceClass = USB_CLASS_CDC,
.bInterfaceSubClass = USB_CDC_SUBCLASS_ACM,
.bInterfaceProtocol = USB_CDC_PROTOCOL_AT,
.iInterface = 0,
.endpoint = comm_endp,
.extra = &cdcacm_functional_descriptors,
.extralen = sizeof(cdcacm_functional_descriptors)
}};
static const struct usb_interface_descriptor data_iface[] = {{
.bLength = USB_DT_INTERFACE_SIZE,
.bDescriptorType = USB_DT_INTERFACE,
.bInterfaceNumber = 1,
.bAlternateSetting = 0,
.bNumEndpoints = 2,
.bInterfaceClass = USB_CLASS_DATA,
.bInterfaceSubClass = 0,
.bInterfaceProtocol = 0,
.iInterface = 0,
.endpoint = data_endp,
}};
static const struct usb_interface ifaces[] = {{
.num_altsetting = 1,
.altsetting = comm_iface,
}, {
.num_altsetting = 1,
.altsetting = data_iface,
}};
static const struct usb_config_descriptor config = {
.bLength = USB_DT_CONFIGURATION_SIZE,
.bDescriptorType = USB_DT_CONFIGURATION,
.wTotalLength = 0,
.bNumInterfaces = 2,
.bConfigurationValue = 1,
.iConfiguration = 0,
.bmAttributes = 0x80,
.bMaxPower = 0x32,
.interface = ifaces,
};
static const char *usb_strings[] = {
"Black Sphere Technologies",
"CDC-ACM Demo",
"DEMO",
};
static int cdcacm_control_request(usbd_device *usbd_dev, struct usb_setup_data *req, u8 **buf,
u16 *len, void (**complete)(usbd_device *usbd_dev, struct usb_setup_data *req))
{
(void)complete;
(void)buf;
(void)usbd_dev;
switch (req->bRequest) {
case USB_CDC_REQ_SET_CONTROL_LINE_STATE: {
/*
* This Linux cdc_acm driver requires this to be implemented
* even though it's optional in the CDC spec, and we don't
* advertise it in the ACM functional descriptor.
*/
char local_buf[10];
struct usb_cdc_notification *notif = (void*)local_buf;
/* We echo signals back to host as notification. */
notif->bmRequestType = 0xA1;
notif->bNotification = USB_CDC_NOTIFY_SERIAL_STATE;
notif->wValue = 0;
notif->wIndex = 0;
notif->wLength = 2;
local_buf[8] = req->wValue & 3;
local_buf[9] = 0;
// usbd_ep_write_packet(0x83, buf, 10);
return 1;
}
case USB_CDC_REQ_SET_LINE_CODING:
if (*len < sizeof(struct usb_cdc_line_coding))
return 0;
return 1;
}
return 0;
}
static void cdcacm_data_rx_cb(usbd_device *usbd_dev, u8 ep)
{
(void)ep;
char buf[64];
int len = usbd_ep_read_packet(usbd_dev, 0x01, buf, 64);
if (len) {
while (usbd_ep_write_packet(usbd_dev, 0x82, buf, len) == 0)
;
buf[len] = 0;
}
gpio_toggle(GPIOC, GPIO5);
}
static void cdcacm_set_config(usbd_device *usbd_dev, u16 wValue)
{
(void)wValue;
usbd_ep_setup(usbd_dev, 0x01, USB_ENDPOINT_ATTR_BULK, 64, cdcacm_data_rx_cb);
usbd_ep_setup(usbd_dev, 0x82, USB_ENDPOINT_ATTR_BULK, 64, NULL);
usbd_ep_setup(usbd_dev, 0x83, USB_ENDPOINT_ATTR_INTERRUPT, 16, NULL);
usbd_register_control_callback(
usbd_dev,
USB_REQ_TYPE_CLASS | USB_REQ_TYPE_INTERFACE,
USB_REQ_TYPE_TYPE | USB_REQ_TYPE_RECIPIENT,
cdcacm_control_request);
}
int main(void)
{
int i;
usbd_device *usbd_dev;
rcc_clock_setup_in_hsi_out_48mhz();
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPCEN);
rcc_peripheral_enable_clock(&RCC_AHBENR, RCC_AHBENR_OTGFSEN);
gpio_set(GPIOC, GPIO2);
gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO2);
gpio_set(GPIOC, GPIO5);
gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO5);
usbd_dev = usbd_init(&stm32f107_usb_driver, &dev, &config, usb_strings, 3);
usbd_register_set_config_callback(usbd_dev, cdcacm_set_config);
for (i = 0; i < 0x800000; i++)
__asm__("nop");
gpio_clear(GPIOC, GPIO2);
while (1)
usbd_poll(usbd_dev);
}

56
examples/stm32/f1/lisa-m-1/usb_cdcacm/cdcacm_test.py
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@ -1,56 +0,0 @@
#! /usr/bin/env python
#
# This file is part of the libopencm3 project.
#
# Copyright (C) 2011 Piotr Esden-Tempski <piotr@esden.net>
#
# This library is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this library. If not, see <http://www.gnu.org/licenses/>.
#
import serial
import signal
import sys
import time
def signal_handler(signal, frame):
print 'You pressed Ctrl+C!'
ser.close();
sys.exit(0)
signal.signal(signal.SIGINT, signal_handler);
ser = serial.Serial('/dev/cu.usbmodemDEM1', 115200, timeout=0.05);
error = 0
tim = time.time();
cycles = 0
while 1==1:
ser.write("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890!@#$%^&*(){}");
buf = ser.read(1024);
cycles += 1
if buf != "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890!@#$%^&*(){}" :
error+=1
print "received " + buf + " errors: " + str(error) + " cycles: " + str(cycles) + " runtime: " + str(time.time() - tim)
#time.sleep(0.1);
ser.close();

25
examples/stm32/f1/lisa-m-1/usb_dfu/Makefile
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@ -1,25 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
BINARY = usbdfu
LDSCRIPT = ../lisa-m.ld
include ../../Makefile.include

7
examples/stm32/f1/lisa-m-1/usb_dfu/README
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@ -1,7 +0,0 @@
------------------------------------------------------------------------------
README
------------------------------------------------------------------------------
This example implements a USB Device Firmware Upgrade (DFU) bootloader
to demonstrate the use of the USB device stack.

272
examples/stm32/f1/lisa-m-1/usb_dfu/usbdfu.c
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@ -1,272 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2010 Gareth McMullin <gareth@blacksphere.co.nz>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <string.h>
#include <libopencm3/stm32/f1/rcc.h>
#include <libopencm3/stm32/f1/gpio.h>
#include <libopencm3/stm32/f1/flash.h>
#include <libopencm3/cm3/scb.h>
#include <libopencm3/usb/usbd.h>
#include <libopencm3/usb/dfu.h>
#define APP_ADDRESS 0x08002000
/* Commands sent with wBlockNum == 0 as per ST implementation. */
#define CMD_SETADDR 0x21
#define CMD_ERASE 0x41
/* We need a special large control buffer for this device: */
u8 usbd_control_buffer[1024];
static enum dfu_state usbdfu_state = STATE_DFU_IDLE;
static struct {
u8 buf[sizeof(usbd_control_buffer)];
u16 len;
u32 addr;
u16 blocknum;
} prog;
const struct usb_device_descriptor dev = {
.bLength = USB_DT_DEVICE_SIZE,
.bDescriptorType = USB_DT_DEVICE,
.bcdUSB = 0x0200,
.bDeviceClass = 0,
.bDeviceSubClass = 0,
.bDeviceProtocol = 0,
.bMaxPacketSize0 = 64,
.idVendor = 0x0483,
.idProduct = 0xDF11,
.bcdDevice = 0x0200,
.iManufacturer = 1,
.iProduct = 2,
.iSerialNumber = 3,
.bNumConfigurations = 1,
};
const struct usb_dfu_descriptor dfu_function = {
.bLength = sizeof(struct usb_dfu_descriptor),
.bDescriptorType = DFU_FUNCTIONAL,
.bmAttributes = USB_DFU_CAN_DOWNLOAD | USB_DFU_WILL_DETACH,
.wDetachTimeout = 255,
.wTransferSize = 1024,
.bcdDFUVersion = 0x011A,
};
const struct usb_interface_descriptor iface = {
.bLength = USB_DT_INTERFACE_SIZE,
.bDescriptorType = USB_DT_INTERFACE,
.bInterfaceNumber = 0,
.bAlternateSetting = 0,
.bNumEndpoints = 0,
.bInterfaceClass = 0xFE, /* Device Firmware Upgrade */
.bInterfaceSubClass = 1,
.bInterfaceProtocol = 2,
/* The ST Microelectronics DfuSe application needs this string.
* The format isn't documented... */
.iInterface = 4,
.extra = &dfu_function,
.extralen = sizeof(dfu_function),
};
const struct usb_interface ifaces[] = {{
.num_altsetting = 1,
.altsetting = &iface,
}};
const struct usb_config_descriptor config = {
.bLength = USB_DT_CONFIGURATION_SIZE,
.bDescriptorType = USB_DT_CONFIGURATION,
.wTotalLength = 0,
.bNumInterfaces = 1,
.bConfigurationValue = 1,
.iConfiguration = 0,
.bmAttributes = 0xC0,
.bMaxPower = 0x32,
.interface = ifaces,
};
static const char *usb_strings[] = {
"Black Sphere Technologies",
"DFU Demo",
"DEMO",
/* This string is used by ST Microelectronics' DfuSe utility. */
"@Internal Flash /0x08000000/8*001Ka,56*001Kg",
};
static u8 usbdfu_getstatus(u32 *bwPollTimeout)
{
switch (usbdfu_state) {
case STATE_DFU_DNLOAD_SYNC:
usbdfu_state = STATE_DFU_DNBUSY;
*bwPollTimeout = 100;
return DFU_STATUS_OK;
case STATE_DFU_MANIFEST_SYNC:
/* Device will reset when read is complete. */
usbdfu_state = STATE_DFU_MANIFEST;
return DFU_STATUS_OK;
default:
return DFU_STATUS_OK;
}
}
static void usbdfu_getstatus_complete(usbd_device *usbd_dev, struct usb_setup_data *req)
{
int i;
(void)req;
(void)usbd_dev;
switch (usbdfu_state) {
case STATE_DFU_DNBUSY:
flash_unlock();
if (prog.blocknum == 0) {
switch (prog.buf[0]) {
case CMD_ERASE:
{
u32 *dat = (u32 *)(prog.buf + 1);
flash_erase_page(*dat);
}
case CMD_SETADDR:
{
u32 *dat = (u32 *)(prog.buf + 1);
prog.addr = *dat;
}
}
} else {
u32 baseaddr = prog.addr + ((prog.blocknum - 2) *
dfu_function.wTransferSize);
for (i = 0; i < prog.len; i += 2) {
u16 *dat = (u16 *)(prog.buf + i);
flash_program_half_word(baseaddr + i,
*dat);
}
}
flash_lock();
/* Jump straight to dfuDNLOAD-IDLE, skipping dfuDNLOAD-SYNC. */
usbdfu_state = STATE_DFU_DNLOAD_IDLE;
return;
case STATE_DFU_MANIFEST:
/* USB device must detach, we just reset... */
scb_reset_system();
return; /* Will never return. */
default:
return;
}
}
static int usbdfu_control_request(usbd_device *usbd_dev, struct usb_setup_data *req, u8 **buf,
u16 *len, void (**complete)(usbd_device *usbd_dev, struct usb_setup_data *req))
{
(void)usbd_dev;
if ((req->bmRequestType & 0x7F) != 0x21)
return 0; /* Only accept class request. */
switch (req->bRequest) {
case DFU_DNLOAD:
if ((len == NULL) || (*len == 0)) {
usbdfu_state = STATE_DFU_MANIFEST_SYNC;
return 1;
} else {
/* Copy download data for use on GET_STATUS. */
prog.blocknum = req->wValue;
prog.len = *len;
memcpy(prog.buf, *buf, *len);
usbdfu_state = STATE_DFU_DNLOAD_SYNC;
return 1;
}
case DFU_CLRSTATUS:
/* Clear error and return to dfuIDLE. */
if (usbdfu_state == STATE_DFU_ERROR)
usbdfu_state = STATE_DFU_IDLE;
return 1;
case DFU_ABORT:
/* Abort returns to dfuIDLE state. */
usbdfu_state = STATE_DFU_IDLE;
return 1;
case DFU_UPLOAD:
/* Upload not supported for now. */
return 0;
case DFU_GETSTATUS: {
u32 bwPollTimeout = 0; /* 24-bit integer in DFU class spec */
(*buf)[0] = usbdfu_getstatus(&bwPollTimeout);
(*buf)[1] = bwPollTimeout & 0xFF;
(*buf)[2] = (bwPollTimeout >> 8) & 0xFF;
(*buf)[3] = (bwPollTimeout >> 16) & 0xFF;
(*buf)[4] = usbdfu_state;
(*buf)[5] = 0; /* iString not used here */
*len = 6;
*complete = usbdfu_getstatus_complete;
return 1;
}
case DFU_GETSTATE:
/* Return state with no state transision. */
*buf[0] = usbdfu_state;
*len = 1;
return 1;
}
return 0;
}
int main(void)
{
usbd_device *usbd_dev;
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
if (!gpio_get(GPIOA, GPIO10)) {
/* Boot the application if it's valid. */
if ((*(volatile u32 *)APP_ADDRESS & 0x2FFE0000) == 0x20000000) {
/* Set vector table base address. */
SCB_VTOR = APP_ADDRESS & 0xFFFF;
/* Initialise master stack pointer. */
asm volatile("msr msp, %0"::"g"
(*(volatile u32 *)APP_ADDRESS));
/* Jump to application. */
(*(void (**)())(APP_ADDRESS + 4))();
}
}
rcc_clock_setup_in_hsi_out_48mhz();
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPCEN);
rcc_peripheral_enable_clock(&RCC_AHBENR, RCC_AHBENR_OTGFSEN);
gpio_set(GPIOC, GPIO2);
gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO2);
usbd_dev = usbd_init(&stm32f107_usb_driver, &dev, &config, usb_strings, 4);
usbd_set_control_buffer_size(usbd_dev, sizeof(usbd_control_buffer));
usbd_register_control_callback(
usbd_dev,
USB_REQ_TYPE_CLASS | USB_REQ_TYPE_INTERFACE,
USB_REQ_TYPE_TYPE | USB_REQ_TYPE_RECIPIENT,
usbdfu_control_request);
gpio_clear(GPIOC, GPIO2);
while (1)
usbd_poll(usbd_dev);
}

25
examples/stm32/f1/lisa-m-1/usb_hid/Makefile
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@ -1,25 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
BINARY = usbhid
LDSCRIPT = ../lisa-m.ld
include ../../Makefile.include

7
examples/stm32/f1/lisa-m-1/usb_hid/README
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@ -1,7 +0,0 @@
------------------------------------------------------------------------------
README
------------------------------------------------------------------------------
This example implements a USB Human Interface Device (HID)
to demonstrate the use of the USB device stack.

38
examples/stm32/f1/lisa-m-1/usb_hid/adxl345.h
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@ -1,38 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2011 Gareth McMullin <gareth@blacksphere.co.nz>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __ADXL345_H
#define __ADXL345_H
/* Register addresses */
#define ADXL345_DEVID 0x00
#define ADXL345_POWER_CTL 0x2D
#define ADXL345_DATA_FORMAT 0x31
#define ADXL345_DATAX0 0x32
#define ADXL345_DATAX1 0x33
#define ADXL345_DATAY0 0x34
#define ADXL345_DATAY1 0x35
#define ADXL345_DATAZ0 0x36
#define ADXL345_DATAZ1 0x37
#define ADXL345_POWER_CTL_MEASURE (1 << 3)
#define ADXL345_DATA_FORMAT_LALIGN (1 << 2)
#endif

369
examples/stm32/f1/lisa-m-1/usb_hid/usbhid.c
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@ -1,369 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2010 Gareth McMullin <gareth@blacksphere.co.nz>
* Copyright (C) 2011 Piotr Esden-Tempski <piotr@esden.net>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <libopencm3/stm32/f1/rcc.h>
#include <libopencm3/stm32/f1/gpio.h>
#include <libopencm3/cm3/systick.h>
#include <libopencm3/stm32/spi.h>
#include <libopencm3/stm32/otg_fs.h>
#include <libopencm3/stm32/f1/nvic.h>
#include <libopencm3/usb/usbd.h>
#include <libopencm3/usb/hid.h>
#include "adxl345.h"
/* Define this to include the DFU APP interface. */
#define INCLUDE_DFU_INTERFACE
#ifdef INCLUDE_DFU_INTERFACE
#include <libopencm3/cm3/scb.h>
#include <libopencm3/usb/dfu.h>
#endif
static usbd_device *usbd_dev;
const struct usb_device_descriptor dev_descr = {
.bLength = USB_DT_DEVICE_SIZE,
.bDescriptorType = USB_DT_DEVICE,
.bcdUSB = 0x0200,
.bDeviceClass = 0,
.bDeviceSubClass = 0,
.bDeviceProtocol = 0,
.bMaxPacketSize0 = 64,
.idVendor = 0x0483,
.idProduct = 0x5710,
.bcdDevice = 0x0200,
.iManufacturer = 1,
.iProduct = 2,
.iSerialNumber = 3,
.bNumConfigurations = 1,
};
/* I have no idea what this means. I haven't read the HID spec. */
static const u8 hid_report_descriptor[] = {
0x05, 0x01, 0x09, 0x02, 0xA1, 0x01, 0x09, 0x01,
0xA1, 0x00, 0x05, 0x09, 0x19, 0x01, 0x29, 0x03,
0x15, 0x00, 0x25, 0x01, 0x95, 0x03, 0x75, 0x01,
0x81, 0x02, 0x95, 0x01, 0x75, 0x05, 0x81, 0x01,
0x05, 0x01, 0x09, 0x30, 0x09, 0x31, 0x09, 0x38,
0x15, 0x81, 0x25, 0x7F, 0x75, 0x08, 0x95, 0x03,
0x81, 0x06, 0xC0, 0x09, 0x3c, 0x05, 0xff, 0x09,
0x01, 0x15, 0x00, 0x25, 0x01, 0x75, 0x01, 0x95,
0x02, 0xb1, 0x22, 0x75, 0x06, 0x95, 0x01, 0xb1,
0x01, 0xc0,
};
static const struct {
struct usb_hid_descriptor hid_descriptor;
struct {
u8 bReportDescriptorType;
u16 wDescriptorLength;
} __attribute__((packed)) hid_report;
} __attribute__((packed)) hid_function = {
.hid_descriptor = {
.bLength = sizeof(hid_function),
.bDescriptorType = USB_DT_HID,
.bcdHID = 0x0100,
.bCountryCode = 0,
.bNumDescriptors = 1,
},
.hid_report = {
.bReportDescriptorType = USB_DT_REPORT,
.wDescriptorLength = sizeof(hid_report_descriptor),
}
};
const struct usb_endpoint_descriptor hid_endpoint = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = 0x81,
.bmAttributes = USB_ENDPOINT_ATTR_INTERRUPT,
.wMaxPacketSize = 4,
.bInterval = 0x02,
};
const struct usb_interface_descriptor hid_iface = {
.bLength = USB_DT_INTERFACE_SIZE,
.bDescriptorType = USB_DT_INTERFACE,
.bInterfaceNumber = 0,
.bAlternateSetting = 0,
.bNumEndpoints = 1,
.bInterfaceClass = USB_CLASS_HID,
.bInterfaceSubClass = 1, /* boot */
.bInterfaceProtocol = 2, /* mouse */
.iInterface = 0,
.endpoint = &hid_endpoint,
.extra = &hid_function,
.extralen = sizeof(hid_function),
};
#ifdef INCLUDE_DFU_INTERFACE
const struct usb_dfu_descriptor dfu_function = {
.bLength = sizeof(struct usb_dfu_descriptor),
.bDescriptorType = DFU_FUNCTIONAL,
.bmAttributes = USB_DFU_CAN_DOWNLOAD | USB_DFU_WILL_DETACH,
.wDetachTimeout = 255,
.wTransferSize = 1024,
.bcdDFUVersion = 0x011A,
};
const struct usb_interface_descriptor dfu_iface = {
.bLength = USB_DT_INTERFACE_SIZE,
.bDescriptorType = USB_DT_INTERFACE,
.bInterfaceNumber = 1,
.bAlternateSetting = 0,
.bNumEndpoints = 0,
.bInterfaceClass = 0xFE,
.bInterfaceSubClass = 1,
.bInterfaceProtocol = 1,
.iInterface = 0,
.extra = &dfu_function,
.extralen = sizeof(dfu_function),
};
#endif
const struct usb_interface ifaces[] = {{
.num_altsetting = 1,
.altsetting = &hid_iface,
#ifdef INCLUDE_DFU_INTERFACE
}, {
.num_altsetting = 1,
.altsetting = &dfu_iface,
#endif
}};
const struct usb_config_descriptor config = {
.bLength = USB_DT_CONFIGURATION_SIZE,
.bDescriptorType = USB_DT_CONFIGURATION,
.wTotalLength = 0,
#ifdef INCLUDE_DFU_INTERFACE
.bNumInterfaces = 2,
#else
.bNumInterfaces = 1,
#endif
.bConfigurationValue = 1,
.iConfiguration = 0,
.bmAttributes = 0xC0,
.bMaxPower = 0x32,
.interface = ifaces,
};
static const char *usb_strings[] = {
"Black Sphere Technologies",
"HID Demo",
"DEMO",
};
static int hid_control_request(usbd_device *dev, struct usb_setup_data *req, u8 **buf, u16 *len,
void (**complete)(usbd_device *dev, struct usb_setup_data *req))
{
(void)complete;
(void)dev;
if((req->bmRequestType != 0x81) ||
(req->bRequest != USB_REQ_GET_DESCRIPTOR) ||
(req->wValue != 0x2200))
return 0;
/* Handle the HID report descriptor. */
*buf = (u8 *)hid_report_descriptor;
*len = sizeof(hid_report_descriptor);
return 1;
}
#ifdef INCLUDE_DFU_INTERFACE
static void dfu_detach_complete(usbd_device *dev, struct usb_setup_data *req)
{
(void)req;
(void)dev;
gpio_set_mode(GPIOA, GPIO_MODE_INPUT, 0, GPIO15);
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO10);
gpio_set(GPIOA, GPIO10);
scb_reset_core();
}
static int dfu_control_request(usbd_device *dev, struct usb_setup_data *req, u8 **buf, u16 *len,
void (**complete)(usbd_device *dev, struct usb_setup_data *req))
{
(void)buf;
(void)len;
(void)dev;
if ((req->bmRequestType != 0x21) || (req->bRequest != DFU_DETACH))
return 0; /* Only accept class request. */
*complete = dfu_detach_complete;
return 1;
}
#endif
static void hid_set_config(usbd_device *dev, u16 wValue)
{
(void)wValue;
usbd_ep_setup(dev, 0x81, USB_ENDPOINT_ATTR_INTERRUPT, 4, NULL);
usbd_register_control_callback(
dev,
USB_REQ_TYPE_STANDARD | USB_REQ_TYPE_INTERFACE,
USB_REQ_TYPE_TYPE | USB_REQ_TYPE_RECIPIENT,
hid_control_request);
#ifdef INCLUDE_DFU_INTERFACE
usbd_register_control_callback(
dev,
USB_REQ_TYPE_CLASS | USB_REQ_TYPE_INTERFACE,
USB_REQ_TYPE_TYPE | USB_REQ_TYPE_RECIPIENT,
dfu_control_request);
#endif
systick_set_clocksource(STK_CTRL_CLKSOURCE_AHB_DIV8);
/* SysTick interrupt every N clock pulses: set reload to N-1 */
systick_set_reload(99999);
systick_interrupt_enable();
systick_counter_enable();
}
static u8 spi_readwrite(u32 spi, u8 data)
{
while (SPI_SR(spi) & SPI_SR_BSY)
;
SPI_DR(spi) = data;
while (!(SPI_SR(spi) & SPI_SR_RXNE))
;
return SPI_DR(spi);
}
static u8 accel_read(u8 addr)
{
u8 ret;
gpio_clear(GPIOB, GPIO12);
spi_readwrite(SPI2, addr | 0x80);
ret = spi_readwrite(SPI2, 0);
gpio_set(GPIOB, GPIO12);
return ret;
}
static void accel_write(u8 addr, u8 data)
{
gpio_clear(GPIOB, GPIO12);
spi_readwrite(SPI2, addr);
spi_readwrite(SPI2, data);
gpio_set(GPIOB, GPIO12);
}
static void accel_get(s16 *x, s16 *y, s16 *z)
{
if (x)
*x = accel_read(ADXL345_DATAX0) |
(accel_read(ADXL345_DATAX1) << 8);
if (y)
*y = accel_read(ADXL345_DATAY0) |
(accel_read(ADXL345_DATAY1) << 8);
if (z)
*z = accel_read(ADXL345_DATAZ0) |
(accel_read(ADXL345_DATAZ1) << 8);
}
int main(void)
{
int i;
rcc_clock_setup_in_hse_12mhz_out_72mhz();
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN);
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPCEN);
rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_SPI2EN);
rcc_peripheral_enable_clock(&RCC_AHBENR, RCC_AHBENR_OTGFSEN);
/* Configure SPI2: PB13(SCK), PB14(MISO), PB15(MOSI). */
gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_10_MHZ,
GPIO_CNF_OUTPUT_ALTFN_PUSHPULL,
GPIO_SPI2_SCK | GPIO_SPI2_MOSI);
gpio_set_mode(GPIOB, GPIO_MODE_INPUT, GPIO_CNF_INPUT_FLOAT,
GPIO_SPI2_MISO);
/* Enable CS pin on PB12. */
gpio_set(GPIOB, GPIO12);
gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_10_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO12);
/* Force to SPI mode. This should be default after reset! */
SPI2_I2SCFGR = 0;
spi_init_master(SPI2,
SPI_CR1_BAUDRATE_FPCLK_DIV_256,
SPI_CR1_CPOL_CLK_TO_1_WHEN_IDLE,
SPI_CR1_CPHA_CLK_TRANSITION_2,
SPI_CR1_DFF_8BIT,
SPI_CR1_MSBFIRST);
/* Ignore the stupid NSS pin. */
spi_enable_software_slave_management(SPI2);
spi_set_nss_high(SPI2);
spi_enable(SPI2);
(void)accel_read(ADXL345_DEVID);
accel_write(ADXL345_POWER_CTL, ADXL345_POWER_CTL_MEASURE);
accel_write(ADXL345_DATA_FORMAT, ADXL345_DATA_FORMAT_LALIGN);
/* USB_DETECT as input. */
gpio_set_mode(GPIOA, GPIO_MODE_INPUT, GPIO_CNF_INPUT_FLOAT, GPIO8);
/* Green LED off, as output. */
gpio_set(GPIOC, GPIO2);
gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO2);
usbd_dev = usbd_init(&stm32f107_usb_driver, &dev_descr, &config, usb_strings, 3);
usbd_register_set_config_callback(usbd_dev, hid_set_config);
/* Delay some seconds to show that pull-up switch works. */
for (i = 0; i < 0x800000; i++)
__asm__("nop");
/* Wait for USB Vbus. */
while (gpio_get(GPIOA, GPIO8) == 0)
__asm__("nop");
/* Green LED on, connect USB. */
gpio_clear(GPIOC, GPIO2);
// OTG_FS_GCCFG &= ~OTG_FS_GCCFG_VBUSBSEN;
while (1)
usbd_poll(usbd_dev);
}
void sys_tick_handler(void)
{
s16 x, y;
u8 buf[4] = {0, 0, 0, 0};
accel_get(&x, &y, NULL);
buf[1] = x >> 9;
buf[2] = y >> 9;
usbd_ep_write_packet(usbd_dev, 0x81, buf, 4);
}

28
examples/stm32/f1/lisa-m-2/adc_injec/Makefile
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@ -1,28 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
BINARY = adc_injec
# Comment the following line if you _don't_ have luftboot flashed!
LDFLAGS += -Wl,-Ttext=0x8002000
CFLAGS += -std=c99
LDSCRIPT = ../lisa-m.ld
include ../../Makefile.include

11
examples/stm32/f1/lisa-m-2/adc_injec/README
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@ -1,11 +0,0 @@
------------------------------------------------------------------------------
README
------------------------------------------------------------------------------
This is a simple polling example that sends the value read out from the
temperature sensor ADC channel of the STM32 to the USART2.
This example polls injected channels.
The terminal settings for the receiving device/PC are 115200 8n1.

174
examples/stm32/f1/lisa-m-2/adc_injec/adc_injec.c
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@ -1,174 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2010 Thomas Otto <tommi@viadmin.org>
* Copyright (C) 2012 Piotr Esden-Tempski <piotr@esden.net>
* Copyright (C) 2012 Stephen Dwyer <dwyer.sc@gmail.com>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libopencm3/stm32/f1/rcc.h>
#include <libopencm3/stm32/f1/flash.h>
#include <libopencm3/stm32/f1/gpio.h>
#include <libopencm3/stm32/f1/adc.h>
#include <libopencm3/stm32/usart.h>
static void usart_setup(void)
{
/* Enable clocks for GPIO port A (for GPIO_USART1_TX) and USART1. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_USART2EN);
/* Setup GPIO pin GPIO_USART1_TX/GPIO9 on GPIO port A for transmit. */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO_USART2_TX);
/* Setup UART parameters. */
usart_set_baudrate(USART2, 115200);
usart_set_databits(USART2, 8);
usart_set_stopbits(USART2, USART_STOPBITS_1);
usart_set_mode(USART2, USART_MODE_TX_RX);
usart_set_parity(USART2, USART_PARITY_NONE);
usart_set_flow_control(USART2, USART_FLOWCONTROL_NONE);
/* Finally enable the USART. */
usart_enable(USART2);
}
static void gpio_setup(void)
{
/* Enable GPIO clocks. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPCEN);
/* Setup the LEDs. */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO8);
gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO15);
}
static void adc_setup(void)
{
int i;
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_ADC1EN);
/* Make sure the ADC doesn't run during config. */
adc_off(ADC1);
/* We configure everything for one single injected conversion. */
adc_disable_scan_mode(ADC1);
adc_set_single_conversion_mode(ADC1);
/* We can only use discontinuous mode on either the regular OR injected channels, not both */
adc_disable_discontinuous_mode_regular(ADC1);
adc_enable_discontinuous_mode_injected(ADC1);
/* We want to start the injected conversion in software */
adc_enable_external_trigger_injected(ADC1,ADC_CR2_JEXTSEL_JSWSTART);
adc_set_right_aligned(ADC1);
/* We want to read the temperature sensor, so we have to enable it. */
adc_enable_temperature_sensor(ADC1);
adc_set_sample_time_on_all_channels(ADC1, ADC_SMPR_SMP_28DOT5CYC);
adc_power_on(ADC1);
/* Wait for ADC starting up. */
for (i = 0; i < 800000; i++) /* Wait a bit. */
__asm__("nop");
adc_reset_calibration(ADC1);
while ((ADC_CR2(ADC1) & ADC_CR2_RSTCAL) != 0); //added this check
adc_calibration(ADC1);
while ((ADC_CR2(ADC1) & ADC_CR2_CAL) != 0); //added this check
}
static void my_usart_print_int(u32 usart, int value)
{
s8 i;
u8 nr_digits = 0;
char buffer[25];
if (value < 0) {
usart_send_blocking(usart, '-');
value = value * -1;
}
while (value > 0) {
buffer[nr_digits++] = "0123456789"[value % 10];
value /= 10;
}
for (i = (nr_digits - 1); i >= 0; i--) {
usart_send_blocking(usart, buffer[i]);
}
usart_send_blocking(usart, '\r');
}
int main(void)
{
u8 channel_array[16];
u16 temperature = 0;
rcc_clock_setup_in_hse_12mhz_out_72mhz();
gpio_setup();
usart_setup();
adc_setup();
gpio_set(GPIOA, GPIO8); /* LED1 on */
gpio_set(GPIOC, GPIO15); /* LED2 on */
/* Send a message on USART1. */
usart_send_blocking(USART2, 's');
usart_send_blocking(USART2, 't');
usart_send_blocking(USART2, 'm');
usart_send_blocking(USART2, '\r');
usart_send_blocking(USART2, '\n');
/* Select the channel we want to convert. 16=temperature_sensor. */
channel_array[0] = 16;
/* Set the injected sequence here, with number of channels */
adc_set_injected_sequence(ADC1, 1, channel_array);
/* Continously convert and poll the temperature ADC. */
while (1) {
/*
* If the ADC_CR2_ON bit is already set -> setting it another time
* starts a regular conversion. Injected conversion is started
* explicitly with the JSWSTART bit as an external trigger. It may
* also work by setting no regular channels and setting JAUTO to
* automatically convert the injected channels after the regular
* channels (of which there would be none). (Not tested.)
*/
adc_start_conversion_injected(ADC1);
/* Wait for end of conversion. */
while (!(adc_eoc_injected(ADC1)));
ADC_SR(ADC2) &= ~ADC_SR_JEOC; //clear injected end of conversion
temperature = adc_read_injected(ADC1,1); //get the result from ADC_JDR1 on ADC1 (only bottom 16bits)
/*
* That's actually not the real temperature - you have to compute it
* as described in the datasheet.
*/
my_usart_print_int(USART2, temperature);
gpio_toggle(GPIOA, GPIO8); /* LED2 on */
}
return 0;
}

28
examples/stm32/f1/lisa-m-2/adc_injec_timtrig/Makefile
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@ -1,28 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
BINARY = adc_injec_timtrig
# Comment the following line if you _don't_ have luftboot flashed!
LDFLAGS += -Wl,-Ttext=0x8002000
CFLAGS += -std=c99
LDSCRIPT = ../lisa-m.ld
include ../../Makefile.include

11
examples/stm32/f1/lisa-m-2/adc_injec_timtrig/README
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@ -1,11 +0,0 @@
------------------------------------------------------------------------------
README
------------------------------------------------------------------------------
This is a simple example that sends the value read out from the
temperature sensor ADC channel of the STM32 to the USART2.
This example uses a timer trigger to automatically sample the adc channel.
The terminal settings for the receiving device/PC are 115200 8n1.

195
examples/stm32/f1/lisa-m-2/adc_injec_timtrig/adc_injec_timtrig.c
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@ -1,195 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2010 Thomas Otto <tommi@viadmin.org>
* Copyright (C) 2012 Piotr Esden-Tempski <piotr@esden.net>
* Copyright (C) 2012 Stephen Dwyer <dwyer.sc@gmail.com>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libopencm3/stm32/f1/rcc.h>
#include <libopencm3/stm32/f1/flash.h>
#include <libopencm3/stm32/f1/gpio.h>
#include <libopencm3/stm32/f1/adc.h>
#include <libopencm3/stm32/usart.h>
#include <libopencm3/stm32/timer.h>
static void usart_setup(void)
{
/* Enable clocks for GPIO port A (for GPIO_USART1_TX) and USART1. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_USART2EN);
/* Setup GPIO pin GPIO_USART1_TX/GPIO9 on GPIO port A for transmit. */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO_USART2_TX);
/* Setup UART parameters. */
usart_set_baudrate(USART2, 115200);
usart_set_databits(USART2, 8);
usart_set_stopbits(USART2, USART_STOPBITS_1);
usart_set_mode(USART2, USART_MODE_TX_RX);
usart_set_parity(USART2, USART_PARITY_NONE);
usart_set_flow_control(USART2, USART_FLOWCONTROL_NONE);
/* Finally enable the USART. */
usart_enable(USART2);
}
static void gpio_setup(void)
{
/* Enable GPIO clocks. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPCEN);
/* Setup the LEDs. */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO8);
gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO15);
}
static void timer_setup(void)
{
/* Set up the timer TIM2 for injected sampling */
uint32_t timer;
volatile uint32_t *rcc_apbenr;
uint32_t rcc_apb;
timer = TIM2;
rcc_apbenr = &RCC_APB1ENR;
rcc_apb = RCC_APB1ENR_TIM2EN;
rcc_peripheral_enable_clock(rcc_apbenr, rcc_apb);
/* Time Base configuration */
timer_reset(timer);
timer_set_mode(timer, TIM_CR1_CKD_CK_INT,
TIM_CR1_CMS_EDGE, TIM_CR1_DIR_UP);
timer_set_period(timer, 0xFF);
timer_set_prescaler(timer, 0x8);
timer_set_clock_division(timer, 0x0);
/* Generate TRGO on every update. */
timer_set_master_mode(timer, TIM_CR2_MMS_UPDATE);
timer_enable_counter(timer);
}
static void adc_setup(void)
{
int i;
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_ADC1EN);
/* Make sure the ADC doesn't run during config. */
adc_off(ADC1);
/* We configure everything for one single timer triggered injected conversion. */
adc_disable_scan_mode(ADC1);
adc_set_single_conversion_mode(ADC1);
/* We can only use discontinuous mode on either the regular OR injected channels, not both */
adc_disable_discontinuous_mode_regular(ADC1);
adc_enable_discontinuous_mode_injected(ADC1);
/* We want to start the injected conversion with the TIM2 TRGO */
adc_enable_external_trigger_injected(ADC1,ADC_CR2_JEXTSEL_TIM2_TRGO);
adc_set_right_aligned(ADC1);
/* We want to read the temperature sensor, so we have to enable it. */
adc_enable_temperature_sensor(ADC1);
adc_set_sample_time_on_all_channels(ADC1, ADC_SMPR_SMP_28DOT5CYC);
adc_power_on(ADC1);
/* Wait for ADC starting up. */
for (i = 0; i < 800000; i++) /* Wait a bit. */
__asm__("nop");
adc_reset_calibration(ADC1);
while ((ADC_CR2(ADC1) & ADC_CR2_RSTCAL) != 0);
adc_calibration(ADC1);
while ((ADC_CR2(ADC1) & ADC_CR2_CAL) != 0);
}
static void my_usart_print_int(u32 usart, int value)
{
s8 i;
u8 nr_digits = 0;
char buffer[25];
if (value < 0) {
usart_send_blocking(usart, '-');
value = value * -1;
}
while (value > 0) {
buffer[nr_digits++] = "0123456789"[value % 10];
value /= 10;
}
for (i = (nr_digits - 1); i >= 0; i--) {
usart_send_blocking(usart, buffer[i]);
}
usart_send_blocking(usart, '\r');
}
int main(void)
{
u8 channel_array[16];
u16 temperature = 0;
rcc_clock_setup_in_hse_12mhz_out_72mhz();
gpio_setup();
usart_setup();
timer_setup();
adc_setup();
gpio_set(GPIOA, GPIO8); /* LED1 on */
gpio_set(GPIOC, GPIO15); /* LED2 on */
/* Send a message on USART1. */
usart_send_blocking(USART2, 's');
usart_send_blocking(USART2, 't');
usart_send_blocking(USART2, 'm');
usart_send_blocking(USART2, '\r');
usart_send_blocking(USART2, '\n');
/* Select the channel we want to convert. 16=temperature_sensor. */
channel_array[0] = 16;
/* Set the injected sequence here, with number of channels */
adc_set_injected_sequence(ADC1, 1, channel_array);
/* Continously convert and poll the temperature ADC. */
while (1) {
/*
* Since the injected sampling is triggered by the timer, it gets
* updated automatically, we just need to periodically read out the value.
* It would be better to check if the JEOC bit is set, and clear it following
* so that you do not read the same value twice, especially for a slower
* sampling rate.
*/
temperature = adc_read_injected(ADC1,1); //get the result from ADC_JDR1 on ADC1 (only bottom 16bits)
/*
* That's actually not the real temperature - you have to compute it
* as described in the datasheet.
*/
my_usart_print_int(USART2, temperature);
gpio_toggle(GPIOA, GPIO8); /* LED2 on */
}
return 0;
}

28
examples/stm32/f1/lisa-m-2/adc_injec_timtrig_irq/Makefile
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@ -1,28 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
BINARY = adc_injec_timtrig_irq
# Comment the following line if you _don't_ have luftboot flashed!
LDFLAGS += -Wl,-Ttext=0x8002000
CFLAGS += -std=c99
LDSCRIPT = ../lisa-m.ld
include ../../Makefile.include

12
examples/stm32/f1/lisa-m-2/adc_injec_timtrig_irq/README
View File

@ -1,12 +0,0 @@
------------------------------------------------------------------------------
README
------------------------------------------------------------------------------
This is a simple example that sends the value read out from the
temperature sensor ADC channel of the STM32 to the USART2.
This example uses a timer trigger to sample an injected adc channel and
then uses an interrupt routine to retrieve the sample from the data register.
The terminal settings for the receiving device/PC are 115200 8n1.

211
examples/stm32/f1/lisa-m-2/adc_injec_timtrig_irq/adc_injec_timtrig_irq.c
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@ -1,211 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2010 Thomas Otto <tommi@viadmin.org>
* Copyright (C) 2012 Piotr Esden-Tempski <piotr@esden.net>
* Copyright (C) 2012 Stephen Dwyer <dwyer.sc@gmail.com>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libopencm3/stm32/f1/rcc.h>
#include <libopencm3/stm32/f1/flash.h>
#include <libopencm3/stm32/f1/gpio.h>
#include <libopencm3/stm32/f1/adc.h>
#include <libopencm3/stm32/usart.h>
#include <libopencm3/stm32/timer.h>
#include <libopencm3/cm3/nvic.h>
volatile u16 temperature = 0;
static void usart_setup(void)
{
/* Enable clocks for GPIO port A (for GPIO_USART1_TX) and USART1. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_USART2EN);
/* Setup GPIO pin GPIO_USART1_TX/GPIO9 on GPIO port A for transmit. */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO_USART2_TX);
/* Setup UART parameters. */
usart_set_baudrate(USART2, 115200);
usart_set_databits(USART2, 8);
usart_set_stopbits(USART2, USART_STOPBITS_1);
usart_set_mode(USART2, USART_MODE_TX_RX);
usart_set_parity(USART2, USART_PARITY_NONE);
usart_set_flow_control(USART2, USART_FLOWCONTROL_NONE);
/* Finally enable the USART. */
usart_enable(USART2);
}
static void gpio_setup(void)
{
/* Enable GPIO clocks. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPCEN);
/* Setup the LEDs. */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO8);
gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO15);
}
static void timer_setup(void)
{
/* Set up the timer TIM2 for injected sampling */
uint32_t timer;
volatile uint32_t *rcc_apbenr;
uint32_t rcc_apb;
timer = TIM2;
rcc_apbenr = &RCC_APB1ENR;
rcc_apb = RCC_APB1ENR_TIM2EN;
rcc_peripheral_enable_clock(rcc_apbenr, rcc_apb);
/* Time Base configuration */
timer_reset(timer);
timer_set_mode(timer, TIM_CR1_CKD_CK_INT,
TIM_CR1_CMS_EDGE, TIM_CR1_DIR_UP);
timer_set_period(timer, 0xFF);
timer_set_prescaler(timer, 0x8);
timer_set_clock_division(timer, 0x0);
/* Generate TRGO on every update. */
timer_set_master_mode(timer, TIM_CR2_MMS_UPDATE);
timer_enable_counter(timer);
}
static void irq_setup(void)
{
/* Enable the adc1_2_isr() routine */
nvic_set_priority(NVIC_ADC1_2_IRQ, 0);
nvic_enable_irq(NVIC_ADC1_2_IRQ);
}
static void adc_setup(void)
{
int i;
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_ADC1EN);
/* Make sure the ADC doesn't run during config. */
adc_off(ADC1);
/* We configure everything for one single timer triggered injected conversion with interrupt generation. */
/* While not needed for a single channel, try out scan mode which does all channels in one sweep and
* generates the interrupt/EOC/JEOC flags set at the end of all channels, not each one.
*/
adc_enable_scan_mode(ADC1);
adc_set_single_conversion_mode(ADC1);
/* We want to start the injected conversion with the TIM2 TRGO */
adc_enable_external_trigger_injected(ADC1,ADC_CR2_JEXTSEL_TIM2_TRGO);
/* Generate the ADC1_2_IRQ */
adc_enable_eoc_interrupt_injected(ADC1);
adc_set_right_aligned(ADC1);
/* We want to read the temperature sensor, so we have to enable it. */
adc_enable_temperature_sensor(ADC1);
adc_set_sample_time_on_all_channels(ADC1, ADC_SMPR_SMP_28DOT5CYC);
adc_power_on(ADC1);
/* Wait for ADC starting up. */
for (i = 0; i < 800000; i++) /* Wait a bit. */
__asm__("nop");
adc_reset_calibration(ADC1);
while ((ADC_CR2(ADC1) & ADC_CR2_RSTCAL) != 0);
adc_calibration(ADC1);
while ((ADC_CR2(ADC1) & ADC_CR2_CAL) != 0);
}
static void my_usart_print_int(u32 usart, int value)
{
s8 i;
u8 nr_digits = 0;
char buffer[25];
if (value < 0) {
usart_send_blocking(usart, '-');
value = value * -1;
}
while (value > 0) {
buffer[nr_digits++] = "0123456789"[value % 10];
value /= 10;
}
for (i = (nr_digits - 1); i >= 0; i--) {
usart_send_blocking(usart, buffer[i]);
}
usart_send_blocking(usart, '\r');
}
int main(void)
{
u8 channel_array[16];
rcc_clock_setup_in_hse_12mhz_out_72mhz();
gpio_setup();
usart_setup();
timer_setup();
irq_setup();
adc_setup();
gpio_set(GPIOA, GPIO8); /* LED1 on */
gpio_set(GPIOC, GPIO15); /* LED2 on */
/* Send a message on USART1. */
usart_send_blocking(USART2, 's');
usart_send_blocking(USART2, 't');
usart_send_blocking(USART2, 'm');
usart_send_blocking(USART2, '\r');
usart_send_blocking(USART2, '\n');
/* Select the channel we want to convert. 16=temperature_sensor. */
channel_array[0] = 16;
/* Set the injected sequence here, with number of channels */
adc_set_injected_sequence(ADC1, 1, channel_array);
/* Continously convert and poll the temperature ADC. */
while (1) {
/*
* Since sampling is triggered by the timer and copying the value
* out of the data register is handled by the interrupt routine,
* we just need to print the value and toggle the LED. It may be useful
* to buffer the adc values in some cases.
*/
/*
* That's actually not the real temperature - you have to compute it
* as described in the datasheet.
*/
my_usart_print_int(USART2, temperature);
gpio_toggle(GPIOA, GPIO8); /* LED2 on */
}
return 0;
}
void adc1_2_isr(void)
{
/* Clear Injected End Of Conversion (JEOC) */
ADC_SR(ADC1) &= ~ADC_SR_JEOC;
temperature = adc_read_injected(ADC1,1);
}

28
examples/stm32/f1/lisa-m-2/adc_injec_timtrig_irq_4ch/Makefile
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@ -1,28 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
BINARY = adc_injec_timtrig_irq_4ch
# Comment the following line if you _don't_ have luftboot flashed!
LDFLAGS += -Wl,-Ttext=0x8002000
CFLAGS += -std=c99
LDSCRIPT = ../lisa-m.ld
include ../../Makefile.include

12
examples/stm32/f1/lisa-m-2/adc_injec_timtrig_irq_4ch/README
View File

@ -1,12 +0,0 @@
------------------------------------------------------------------------------
README
------------------------------------------------------------------------------
This is a simple example that sends the values read out from four ADC
channels of the STM32 to the USART2.
This example uses a timer trigger to sample the injected adc channels and
then uses an interrupt routine to retrieve the samples from the data registers.
The terminal settings for the receiving device/PC are 115200 8n1.

230
examples/stm32/f1/lisa-m-2/adc_injec_timtrig_irq_4ch/adc_injec_timtrig_irq_4ch.c
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@ -1,230 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2010 Thomas Otto <tommi@viadmin.org>
* Copyright (C) 2012 Piotr Esden-Tempski <piotr@esden.net>
* Copyright (C) 2012 Stephen Dwyer <dwyer.sc@gmail.com>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libopencm3/stm32/f1/rcc.h>
#include <libopencm3/stm32/f1/flash.h>
#include <libopencm3/stm32/f1/gpio.h>
#include <libopencm3/stm32/f1/adc.h>
#include <libopencm3/stm32/usart.h>
#include <libopencm3/stm32/timer.h>
#include <libopencm3/cm3/nvic.h>
volatile u16 temperature = 0;
volatile u16 v_refint = 0;
volatile u16 lisam_adc1 = 0;
volatile u16 lisam_adc2 = 0;
u8 channel_array[4]; /* for injected sampling, 4 channels max, for regular, 16 max */
static void usart_setup(void)
{
/* Enable clocks for GPIO port A (for GPIO_USART1_TX) and USART1. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_USART2EN);
/* Setup GPIO pin GPIO_USART1_TX/GPIO9 on GPIO port A for transmit. */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO_USART2_TX);
/* Setup UART parameters. */
usart_set_baudrate(USART2, 115200);
usart_set_databits(USART2, 8);
usart_set_stopbits(USART2, USART_STOPBITS_1);
usart_set_mode(USART2, USART_MODE_TX_RX);
usart_set_parity(USART2, USART_PARITY_NONE);
usart_set_flow_control(USART2, USART_FLOWCONTROL_NONE);
/* Finally enable the USART. */
usart_enable(USART2);
}
static void gpio_setup(void)
{
/* Enable GPIO clocks. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPCEN);
/* Setup the LEDs. */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO8);
gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO15);
/* Setup Lisa/M v2 ADC1,2 on ANALOG1 connector */
gpio_set_mode(GPIOC, GPIO_MODE_INPUT, GPIO_CNF_INPUT_ANALOG, \
GPIO3 | GPIO0 );
}
static void timer_setup(void)
{
/* Set up the timer TIM2 for injected sampling */
uint32_t timer;
volatile uint32_t *rcc_apbenr;
uint32_t rcc_apb;
timer = TIM2;
rcc_apbenr = &RCC_APB1ENR;
rcc_apb = RCC_APB1ENR_TIM2EN;
rcc_peripheral_enable_clock(rcc_apbenr, rcc_apb);
/* Time Base configuration */
timer_reset(timer);
timer_set_mode(timer, TIM_CR1_CKD_CK_INT,
TIM_CR1_CMS_EDGE, TIM_CR1_DIR_UP);
timer_set_period(timer, 0xFF);
timer_set_prescaler(timer, 0x8);
timer_set_clock_division(timer, 0x0);
/* Generate TRGO on every update. */
timer_set_master_mode(timer, TIM_CR2_MMS_UPDATE);
timer_enable_counter(timer);
}
static void irq_setup(void)
{
/* Enable the adc1_2_isr() routine */
nvic_set_priority(NVIC_ADC1_2_IRQ, 0);
nvic_enable_irq(NVIC_ADC1_2_IRQ);
}
static void adc_setup(void)
{
int i;
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_ADC1EN);
/* Make sure the ADC doesn't run during config. */
adc_off(ADC1);
/* We configure everything for one single timer triggered injected conversion with interrupt generation. */
/* While not needed for a single channel, try out scan mode which does all channels in one sweep and
* generates the interrupt/EOC/JEOC flags set at the end of all channels, not each one.
*/
adc_enable_scan_mode(ADC1);
adc_set_single_conversion_mode(ADC1);
/* We want to start the injected conversion with the TIM2 TRGO */
adc_enable_external_trigger_injected(ADC1,ADC_CR2_JEXTSEL_TIM2_TRGO);
/* Generate the ADC1_2_IRQ */
adc_enable_eoc_interrupt_injected(ADC1);
adc_set_right_aligned(ADC1);
/* We want to read the temperature sensor, so we have to enable it. */
adc_enable_temperature_sensor(ADC1);
adc_set_sample_time_on_all_channels(ADC1, ADC_SMPR_SMP_28DOT5CYC);
/* Select the channels we want to convert.
* 16=temperature_sensor, 17=Vrefint, 13=ADC1, 10=ADC2
*/
channel_array[0] = 16;
channel_array[1] = 17;
channel_array[2] = 13;
channel_array[3] = 10;
adc_set_injected_sequence(ADC1, 4, channel_array);
adc_power_on(ADC1);
/* Wait for ADC starting up. */
for (i = 0; i < 800000; i++) /* Wait a bit. */
__asm__("nop");
adc_reset_calibration(ADC1);
while ((ADC_CR2(ADC1) & ADC_CR2_RSTCAL) != 0); //added this check
adc_calibration(ADC1);
while ((ADC_CR2(ADC1) & ADC_CR2_CAL) != 0); //added this check
}
static void my_usart_print_int(u32 usart, int value)
{
s8 i;
u8 nr_digits = 0;
char buffer[25];
if (value < 0) {
usart_send_blocking(usart, '-');
value = value * -1;
}
while (value > 0) {
buffer[nr_digits++] = "0123456789"[value % 10];
value /= 10;
}
for (i = (nr_digits - 1); i >= 0; i--) {
usart_send_blocking(usart, buffer[i]);
}
//usart_send_blocking(usart, '\r');
}
int main(void)
{
rcc_clock_setup_in_hse_12mhz_out_72mhz();
gpio_setup();
usart_setup();
timer_setup();
irq_setup();
adc_setup();
gpio_set(GPIOA, GPIO8); /* LED1 off */
gpio_set(GPIOC, GPIO15); /* LED5 off */
/* Send a message on USART1. */
usart_send_blocking(USART2, 's');
usart_send_blocking(USART2, 't');
usart_send_blocking(USART2, 'm');
usart_send_blocking(USART2, '\r');
usart_send_blocking(USART2, '\n');
/* Moved the channel selection and sequence init to adc_setup() */
/* Continously convert and poll the temperature ADC. */
while (1) {
/*
* Since sampling is triggered by the timer and copying the values
* out of the data registers is handled by the interrupt routine,
* we just need to print the values and toggle the LED. It may be useful
* to buffer the adc values in some cases.
*/
my_usart_print_int(USART2, temperature);
usart_send_blocking(USART2, ' ');
my_usart_print_int(USART2, v_refint);
usart_send_blocking(USART2, ' ');
my_usart_print_int(USART2, lisam_adc1);
usart_send_blocking(USART2, ' ');
my_usart_print_int(USART2, lisam_adc2);
usart_send_blocking(USART2, '\r');
gpio_toggle(GPIOA, GPIO8); /* LED2 on */
}
return 0;
}
void adc1_2_isr(void)
{
/* Clear Injected End Of Conversion (JEOC) */
ADC_SR(ADC1) &= ~ADC_SR_JEOC;
temperature = adc_read_injected(ADC1,1);
v_refint = adc_read_injected(ADC1,2);
lisam_adc1 = adc_read_injected(ADC1,3);
lisam_adc2 = adc_read_injected(ADC1,4);
}

28
examples/stm32/f1/lisa-m-2/adc_regular/Makefile
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@ -1,28 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
BINARY = adc
# Comment the following line if you _don't_ have luftboot flashed!
LDFLAGS += -Wl,-Ttext=0x8002000
CFLAGS += -std=c99
LDSCRIPT = ../lisa-m.ld
include ../../Makefile.include

9
examples/stm32/f1/lisa-m-2/adc_regular/README
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@ -1,9 +0,0 @@
------------------------------------------------------------------------------
README
------------------------------------------------------------------------------
This is a simple polling example that sends the value read out from the
temperature sensor ADC channel of the STM32 to the USART2.
The terminal settings for the receiving device/PC are 115200 8n1.

161
examples/stm32/f1/lisa-m-2/adc_regular/adc.c
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@ -1,161 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2010 Thomas Otto <tommi@viadmin.org>
* Copyright (C) 2012 Piotr Esden-Tempski <piotr@esden.net>
* Copyright (C) 2012 Ken Sarkies <ksarkies@internode.on.net>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libopencm3/stm32/f1/rcc.h>
#include <libopencm3/stm32/f1/flash.h>
#include <libopencm3/stm32/f1/gpio.h>
#include <libopencm3/stm32/f1/adc.h>
#include <libopencm3/stm32/usart.h>
static void usart_setup(void)
{
/* Enable clocks for GPIO port A (for GPIO_USART1_TX) and USART1. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_USART2EN);
/* Setup GPIO pin GPIO_USART1_TX/GPIO9 on GPIO port A for transmit. */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO_USART2_TX);
/* Setup UART parameters. */
usart_set_baudrate(USART2, 115200);
usart_set_databits(USART2, 8);
usart_set_stopbits(USART2, USART_STOPBITS_1);
usart_set_mode(USART2, USART_MODE_TX_RX);
usart_set_parity(USART2, USART_PARITY_NONE);
usart_set_flow_control(USART2, USART_FLOWCONTROL_NONE);
/* Finally enable the USART. */
usart_enable(USART2);
}
static void gpio_setup(void)
{
/* Enable GPIO clocks. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPCEN);
/* Setup the LEDs. */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO8);
gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO15);
}
static void adc_setup(void)
{
int i;
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_ADC1EN);
/* Make sure the ADC doesn't run during config. */
adc_off(ADC1);
/* We configure everything for one single conversion. */
adc_disable_scan_mode(ADC1);
adc_set_single_conversion_mode(ADC1);
adc_disable_external_trigger_regular(ADC1);
adc_set_right_aligned(ADC1);
/* We want to read the temperature sensor, so we have to enable it. */
adc_enable_temperature_sensor(ADC1);
adc_set_sample_time_on_all_channels(ADC1, ADC_SMPR_SMP_28DOT5CYC);
adc_power_on(ADC1);
/* Wait for ADC starting up. */
for (i = 0; i < 800000; i++) /* Wait a bit. */
__asm__("nop");
adc_reset_calibration(ADC1);
adc_calibration(ADC1);
}
static void my_usart_print_int(u32 usart, int value)
{
s8 i;
u8 nr_digits = 0;
char buffer[25];
if (value < 0) {
usart_send_blocking(usart, '-');
value = value * -1;
}
while (value > 0) {
buffer[nr_digits++] = "0123456789"[value % 10];
value /= 10;
}
for (i = nr_digits; i >= 0; i--) {
usart_send_blocking(usart, buffer[i]);
}
usart_send_blocking(usart, '\r');
}
int main(void)
{
u8 channel_array[16];
u16 temperature = 0;
rcc_clock_setup_in_hse_12mhz_out_72mhz();
gpio_setup();
usart_setup();
adc_setup();
gpio_set(GPIOA, GPIO8); /* LED1 on */
gpio_set(GPIOC, GPIO15); /* LED2 off */
/* Send a message on USART1. */
usart_send_blocking(USART2, 's');
usart_send_blocking(USART2, 't');
usart_send_blocking(USART2, 'm');
usart_send_blocking(USART2, '\r');
usart_send_blocking(USART2, '\n');
/* Select the channel we want to convert. 16=temperature_sensor. */
channel_array[0] = 16;
adc_set_regular_sequence(ADC1, 1, channel_array);
/* Continously convert and poll the temperature ADC. */
while (1) {
/*
* Start the conversion directly (ie without a trigger).
*/
adc_start_conversion_direct(ADC1);
/* Wait for end of conversion. */
while (!(adc_eoc(ADC1)));
temperature = adc_read_regular(ADC1);
/*
* That's actually not the real temperature - you have to compute it
* as described in the datasheet.
*/
my_usart_print_int(USART2, temperature);
gpio_toggle(GPIOA, GPIO8); /* LED2 on */
}
return 0;
}

28
examples/stm32/f1/lisa-m-2/can/Makefile
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@ -1,28 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
BINARY = can
# Comment the following line if you _don't_ have luftboot flashed!
LDFLAGS += -Wl,-Ttext=0x8002000
CFLAGS += -std=c99
LDSCRIPT = ../lisa-m.ld
include ../../Makefile.include

4
examples/stm32/f1/lisa-m-2/can/README
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@ -1,4 +0,0 @@
This test sets up the CAN interface on Lisa/M and transmits 8 bites every
100ms. The first byte is being incremented in each cycle. The demo also
receives messages and is displaing the first 4 bits of the first byte on the
board LEDs.

237
examples/stm32/f1/lisa-m-2/can/can.c
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@ -1,237 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2010 Thomas Otto <tommi@viadmin.org>
* Copyright (C) 2010-2011 Piotr Esden-Tempski <piotr@esden.net>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libopencm3/stm32/f1/rcc.h>
#include <libopencm3/stm32/f1/flash.h>
#include <libopencm3/stm32/f1/gpio.h>
#include <libopencm3/cm3/nvic.h>
#include <libopencm3/cm3/systick.h>
#include <libopencm3/stm32/can.h>
struct can_tx_msg {
u32 std_id;
u32 ext_id;
u8 ide;
u8 rtr;
u8 dlc;
u8 data[8];
};
struct can_rx_msg {
u32 std_id;
u32 ext_id;
u8 ide;
u8 rtr;
u8 dlc;
u8 data[8];
u8 fmi;
};
struct can_tx_msg can_tx_msg;
struct can_rx_msg can_rx_msg;
static void gpio_setup(void)
{
/* Enable Alternate Function clock. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_AFIOEN);
/* Enable GPIOA clock. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
/* Enable GPIOB clock. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN);
/* Enable GPIOC clock. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPCEN);
/* Preconfigure LEDs. */
gpio_set(GPIOA, GPIO8); /* LED1 off */
gpio_set(GPIOB, GPIO4); /* LED2 off */
gpio_set(GPIOC, GPIO2); /* LED3 off */
gpio_set(GPIOC, GPIO5); /* LED4 off */
gpio_set(GPIOC, GPIO15); /* LED5 off */
/* Configure LED GPIOOs. */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO8);
gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO4);
gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO2);
gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO5);
gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO15);
/* Configure PB4 as GPIO. */
AFIO_MAPR |= AFIO_MAPR_SWJ_CFG_FULL_SWJ_NO_JNTRST;
}
static void systick_setup(void)
{
/* 72MHz / 8 => 9000000 counts per second */
systick_set_clocksource(STK_CTRL_CLKSOURCE_AHB_DIV8);
/* 9000000/9000 = 1000 overflows per second - every 1ms one interrupt */
/* SysTick interrupt every N clock pulses: set reload to N-1 */
systick_set_reload(8999);
systick_interrupt_enable();
/* Start counting. */
systick_counter_enable();
}
static void can_setup(void)
{
/* Enable peripheral clocks. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_AFIOEN);
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN);
rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_CAN1EN);
AFIO_MAPR |= AFIO_MAPR_CAN1_REMAP_PORTB;
/* Configure CAN pin: RX (input pull-up). */
gpio_set_mode(GPIO_BANK_CAN1_PB_RX, GPIO_MODE_INPUT,
GPIO_CNF_INPUT_PULL_UPDOWN, GPIO_CAN1_PB_RX);
gpio_set(GPIO_BANK_CAN1_PB_RX, GPIO_CAN1_PB_RX);
/* Configure CAN pin: TX. */
gpio_set_mode(GPIO_BANK_CAN1_PB_TX, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO_CAN1_PB_TX);
/* NVIC setup. */
nvic_enable_irq(NVIC_USB_LP_CAN_RX0_IRQ);
nvic_set_priority(NVIC_USB_LP_CAN_RX0_IRQ, 1);
/* Reset CAN. */
can_reset(CAN1);
/* CAN cell init. */
if (can_init(CAN1,
false, /* TTCM: Time triggered comm mode? */
true, /* ABOM: Automatic bus-off management? */
false, /* AWUM: Automatic wakeup mode? */
false, /* NART: No automatic retransmission? */
false, /* RFLM: Receive FIFO locked mode? */
false, /* TXFP: Transmit FIFO priority? */
CAN_BTR_SJW_1TQ,
CAN_BTR_TS1_3TQ,
CAN_BTR_TS2_4TQ,
12,
false,
false)) /* BRP+1: Baud rate prescaler */
{
gpio_set(GPIOA, GPIO8); /* LED1 off */
gpio_set(GPIOB, GPIO4); /* LED2 off */
gpio_set(GPIOC, GPIO2); /* LED3 off */
gpio_clear(GPIOC, GPIO5); /* LED4 on */
gpio_set(GPIOC, GPIO15); /* LED5 off */
/* Die because we failed to initialize. */
while (1)
__asm__("nop");
}
/* CAN filter 0 init. */
can_filter_id_mask_32bit_init(CAN1,
0, /* Filter ID */
0, /* CAN ID */
0, /* CAN ID mask */
0, /* FIFO assignment (here: FIFO0) */
true); /* Enable the filter. */
/* Enable CAN RX interrupt. */
can_enable_irq(CAN1, CAN_IER_FMPIE0);
}
void sys_tick_handler(void)
{
static int temp32 = 0;
static u8 data[8] = {0, 1, 2, 0, 0, 0, 0, 0};
/* We call this handler every 1ms so every 100ms = 0.1s
* resulting in 100Hz message rate.
*/
if (++temp32 != 100)
return;
temp32 = 0;
/* Transmit CAN frame. */
data[0]++;
if (can_transmit(CAN1,
0, /* (EX/ST)ID: CAN ID */
false, /* IDE: CAN ID extended? */
false, /* RTR: Request transmit? */
8, /* DLC: Data length */
data) == -1)
{
gpio_set(GPIOA, GPIO8); /* LED1 off */
gpio_set(GPIOB, GPIO4); /* LED2 off */
gpio_set(GPIOC, GPIO2); /* LED3 off */
gpio_set(GPIOC, GPIO5); /* LED4 off */
gpio_clear(GPIOC, GPIO15); /* LED5 on */
}
}
void usb_lp_can_rx0_isr(void)
{
u32 id, fmi;
bool ext, rtr;
u8 length, data[8];
can_receive(CAN1, 0, false, &id, &ext, &rtr, &fmi, &length, data);
if (data[0] & 1)
gpio_clear(GPIOA, GPIO8);
else
gpio_set(GPIOA, GPIO8);
if (data[0] & 2)
gpio_clear(GPIOB, GPIO4);
else
gpio_set(GPIOB, GPIO4);
if (data[0] & 4)
gpio_clear(GPIOC, GPIO2);
else
gpio_set(GPIOC, GPIO2);
if (data[0] & 8)
gpio_clear(GPIOC, GPIO5);
else
gpio_set(GPIOC, GPIO5);
can_fifo_release(CAN1, 0);
}
int main(void)
{
rcc_clock_setup_in_hse_12mhz_out_72mhz();
gpio_setup();
can_setup();
systick_setup();
while (1); /* Halt. */
return 0;
}

28
examples/stm32/f1/lisa-m-2/fancyblink/Makefile
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@ -1,28 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
BINARY = fancyblink
# Comment the following line if you _don't_ have luftboot flashed!
LDFLAGS += -Wl,-Ttext=0x8002000
CFLAGS += -std=c99
LDSCRIPT = ../lisa-m.ld
include ../../Makefile.include

148
examples/stm32/f1/lisa-m-2/fancyblink/fancyblink.c
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@ -1,148 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
* Copyright (C) 2011 Piotr Esden-Tempski <piotr@esden.net>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libopencm3/stm32/f1/rcc.h>
#include <libopencm3/stm32/f1/gpio.h>
/* Set STM32 to 72 MHz. */
static void clock_setup(void)
{
rcc_clock_setup_in_hse_12mhz_out_72mhz();
/* Enable GPIOA, GPIOB, GPIOC, and AFIO clocks. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN);
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPCEN);
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_AFIOEN);
}
static void gpio_setup(void)
{
/* LED1 */
/* Set GPIO8 (in GPIO port A) to 'output push-pull'. */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO8);
/* LED2 */
/* Set GPIO15 (in GPIO port C) to 'output push-pull'. */
gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO15);
/* JTAG_TRST */
/* Set GPIO4 (in GPIO port B) to 'output push-pull'. */
gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO4);
AFIO_MAPR |= AFIO_MAPR_SWJ_CFG_FULL_SWJ_NO_JNTRST;
/* ADC4 */
/* Set GPIO5 (in GPIO port C) to 'output push-pull'. */
gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO5);
/* ADC6 */
/* Set GPIO2 (in GPIO port C) to 'output push-pull'. */
gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO2);
/* Preconfigure the LEDs. */
gpio_set(GPIOA, GPIO8);
gpio_set(GPIOC, GPIO15);
gpio_set(GPIOB, GPIO4);
gpio_set(GPIOC, GPIO5);
gpio_set(GPIOC, GPIO2);
}
static void led_set(int id, int on)
{
if (on) {
switch (id) {
case 0:
gpio_clear(GPIOA, GPIO8); /* LED1 On */
break;
case 1:
gpio_clear(GPIOB, GPIO4); /* JTAG_TRST On */
break;
case 2:
gpio_clear(GPIOC, GPIO2); /* ADC6 On */
break;
case 3:
gpio_clear(GPIOC, GPIO5); /* ADC4 On */
break;
case 4:
gpio_clear(GPIOC, GPIO15); /* LED2 On */
break;
}
} else {
switch (id) {
case 0:
gpio_set(GPIOA, GPIO8); /* LED1 On */
break;
case 1:
gpio_set(GPIOB, GPIO4); /* JTAG_TRST On */
break;
case 2:
gpio_set(GPIOC, GPIO2); /* ADC6 On */
break;
case 3:
gpio_set(GPIOC, GPIO5); /* ADC4 On */
break;
case 4:
gpio_set(GPIOC, GPIO15); /* LED2 On */
break;
}
}
}
static void led_advance(void)
{
static int state = 0;
if (state < 5) {
led_set(state, 1);
} else if (state < 10) {
led_set(state - 5, 0);
} else if (state < 15) {
led_set(14 - state, 1);
} else if (state < 20) {
led_set(19 - state, 0);
}
state++;
if(state == 20) state = 0;
}
int main(void)
{
int i;
clock_setup();
gpio_setup();
/* Blink the LEDs (PC13 and PB4) on the board. */
while (1) {
led_advance();
for (i = 0; i < 800000; i++) /* Wait a bit. */
__asm__("nop");
}
return 0;
}

31
examples/stm32/f1/lisa-m-2/lisa-m.ld
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@ -1,31 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/* Linker script for Lisa-M (STM32F103RBT6, 128K flash, 20K RAM). */
/* Define memory regions. */
MEMORY
{
rom (rx) : ORIGIN = 0x08000000, LENGTH = 128K
ram (rwx) : ORIGIN = 0x20000000, LENGTH = 20K
}
/* Include the common ld script. */
INCLUDE libopencm3_stm32f1.ld

28
examples/stm32/f1/lisa-m-2/spi/Makefile
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@ -1,28 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
BINARY = spi
# Comment the following line if you _don't_ have luftboot flashed!
LDFLAGS += -Wl,-Ttext=0x8002000
CFLAGS += -std=c99
LDSCRIPT = ../lisa-m.ld
include ../../Makefile.include

14
examples/stm32/f1/lisa-m-2/spi/README
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@ -1,14 +0,0 @@
------------------------------------------------------------------------------
README
------------------------------------------------------------------------------
This example program demonstrates simple SPI transceive on Lisa/M 2.0 board
(http://paparazzi.enac.fr/wiki/Lisa/M_v20 for details).
The terminal settings for the receiving device/PC are 9600 8n1.
The example expects a loopback connection between the MISO and MOSI pins on
SPI1.
A counter increments and the spi sends this byte out, after which it should
come back in to the rx buffer, and the result is reported on the uart.

164
examples/stm32/f1/lisa-m-2/spi/spi.c
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@ -1,164 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
* Copyright (C) 2013 Stephen Dwyer <scdwyer@ualberta.ca>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libopencm3/stm32/rcc.h>
#include <libopencm3/stm32/gpio.h>
#include <libopencm3/stm32/usart.h>
#include <libopencm3/stm32/dma.h>
#include <libopencm3/cm3/nvic.h>
#include <libopencm3/stm32/spi.h>
#include <stdio.h>
#include <errno.h>
int _write(int file, char *ptr, int len);
static void clock_setup(void)
{
rcc_clock_setup_in_hse_12mhz_out_72mhz();
/* Enable GPIOA, GPIOB, GPIOC clock. */
rcc_peripheral_enable_clock(&RCC_APB2ENR,
RCC_APB2ENR_IOPAEN | RCC_APB2ENR_IOPBEN |
RCC_APB2ENR_IOPCEN);
/* Enable clocks for GPIO port A (for GPIO_USART2_TX) and USART2. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN |
RCC_APB2ENR_AFIOEN);
rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_USART2EN);
/* Enable SPI1 Periph and gpio clocks */
rcc_peripheral_enable_clock(&RCC_APB2ENR,
RCC_APB2ENR_SPI1EN);
}
static void spi_setup(void) {
/* Configure GPIOs: SS=PA4, SCK=PA5, MISO=PA6 and MOSI=PA7 */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO4 |
GPIO5 |
GPIO7 );
gpio_set_mode(GPIOA, GPIO_MODE_INPUT, GPIO_CNF_INPUT_FLOAT,
GPIO6);
/* Reset SPI, SPI_CR1 register cleared, SPI is disabled */
spi_reset(SPI1);
/* Set up SPI in Master mode with:
* Clock baud rate: 1/64 of peripheral clock frequency
* Clock polarity: Idle High
* Clock phase: Data valid on 2nd clock pulse
* Data frame format: 8-bit
* Frame format: MSB First
*/
spi_init_master(SPI1, SPI_CR1_BAUDRATE_FPCLK_DIV_64, SPI_CR1_CPOL_CLK_TO_1_WHEN_IDLE,
SPI_CR1_CPHA_CLK_TRANSITION_2, SPI_CR1_DFF_8BIT, SPI_CR1_MSBFIRST);
/*
* Set NSS management to software.
*
* Note:
* Setting nss high is very important, even if we are controlling the GPIO
* ourselves this bit needs to be at least set to 1, otherwise the spi
* peripheral will not send any data out.
*/
spi_enable_software_slave_management(SPI1);
spi_set_nss_high(SPI1);
/* Enable SPI1 periph. */
spi_enable(SPI1);
}
static void usart_setup(void)
{
/* Setup GPIO pin GPIO_USART2_TX and GPIO_USART2_RX. */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO_USART2_TX);
gpio_set_mode(GPIOA, GPIO_MODE_INPUT,
GPIO_CNF_INPUT_FLOAT, GPIO_USART2_RX);
/* Setup UART parameters. */
usart_set_baudrate(USART2, 9600);
usart_set_databits(USART2, 8);
usart_set_stopbits(USART2, USART_STOPBITS_1);
usart_set_mode(USART2, USART_MODE_TX_RX);
usart_set_parity(USART2, USART_PARITY_NONE);
usart_set_flow_control(USART2, USART_FLOWCONTROL_NONE);
/* Finally enable the USART. */
usart_enable(USART2);
}
int _write(int file, char *ptr, int len)
{
int i;
if (file == 1) {
for (i = 0; i < len; i++)
usart_send_blocking(USART2, ptr[i]);
return i;
}
errno = EIO;
return -1;
}
static void gpio_setup(void)
{
/* Set GPIO8 (in GPIO port A) to 'output push-pull'. */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO8);
}
int main(void)
{
int counter = 0;
u16 rx_value = 0x42;
clock_setup();
gpio_setup();
usart_setup();
spi_setup();
/* Blink the LED (PA8) on the board with every transmitted byte. */
while (1) {
/* LED on/off */
gpio_toggle(GPIOA, GPIO8);
/* printf the value that SPI should send */
printf("Counter: %i SPI Sent Byte: %i", counter, (uint8_t) counter);
/* blocking send of the byte out SPI1 */
spi_send(SPI1, (uint8_t) counter);
/* Read the byte that just came in (use a loopback between MISO and MOSI
* to get the same byte back)
*/
rx_value = spi_read(SPI1);
/* printf the byte just received */
printf(" SPI Received Byte: %i\r\n", rx_value);
counter++;
}
return 0;
}

28
examples/stm32/f1/lisa-m-2/spi_dma/Makefile
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@ -1,28 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
BINARY = spi_dma
# Comment the following line if you _don't_ have luftboot flashed!
LDFLAGS += -Wl,-Ttext=0x8002000
CFLAGS += -std=c99
LDSCRIPT = ../lisa-m.ld
include ../../Makefile.include

17
examples/stm32/f1/lisa-m-2/spi_dma/README
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@ -1,17 +0,0 @@
------------------------------------------------------------------------------
README
------------------------------------------------------------------------------
This example program demonstrates SPI transceive with DMA on Lisa/M 2.0 board
(http://paparazzi.enac.fr/wiki/Lisa/M_v20 for details).
The terminal settings for the receiving device/PC are 9600 8n1.
The example expects a loopback connection between the MISO and MOSI pins on
SPI1. The DRDY and SS pins (on the Lisa/M v2.0 SPI1 connector) are used as
GPIO to time the tx and rx ISRs, respectively. Use a scope or logic analyzer.
The tx length is incremented, followed by the rx length, after which both tx
and rx lengths are decremented together. The case where rx is longer than tx
requires greater complexity to ensure all rx data is clocked in. See the adv
example for this.

439
examples/stm32/f1/lisa-m-2/spi_dma/spi_dma.c
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@ -1,439 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
* Copyright (C) 2013 Stephen Dwyer <scdwyer@ualberta.ca>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libopencm3/stm32/rcc.h>
#include <libopencm3/stm32/gpio.h>
#include <libopencm3/stm32/usart.h>
#include <libopencm3/stm32/dma.h>
#include <libopencm3/cm3/nvic.h>
#include <libopencm3/stm32/spi.h>
#include <stdio.h>
#include <errno.h>
#ifndef USE_16BIT_TRANSFERS
#define USE_16BIT_TRANSFERS 1
#endif
/* This is for the counter state flag */
typedef enum {
TX_UP_RX_HOLD = 0,
TX_HOLD_RX_UP,
TX_DOWN_RX_DOWN
} cnt_state;
/* This is a global spi state flag */
typedef enum {
NONE = 0,
ONE,
DONE
} trans_status;
volatile trans_status transceive_status;
int _write(int file, char *ptr, int len);
static void clock_setup(void)
{
rcc_clock_setup_in_hse_12mhz_out_72mhz();
/* Enable GPIOA, GPIOB, GPIOC clock. */
rcc_peripheral_enable_clock(&RCC_APB2ENR,
RCC_APB2ENR_IOPAEN | RCC_APB2ENR_IOPBEN |
RCC_APB2ENR_IOPCEN);
/* Enable clocks for GPIO port A (for GPIO_USART2_TX) and USART2. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN |
RCC_APB2ENR_AFIOEN);
rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_USART2EN);
/* Enable SPI1 Periph and gpio clocks */
rcc_peripheral_enable_clock(&RCC_APB2ENR,
RCC_APB2ENR_SPI1EN);
/* Enable DMA1 clock */
rcc_peripheral_enable_clock(&RCC_AHBENR, RCC_AHBENR_DMA1EN);
}
static void spi_setup(void) {
/* Configure GPIOs: SS=PA4, SCK=PA5, MISO=PA6 and MOSI=PA7
* For now ignore the SS pin so we can use it to time the ISRs
*/
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, /* GPIO4 | */
GPIO5 |
GPIO7 );
gpio_set_mode(GPIOA, GPIO_MODE_INPUT, GPIO_CNF_INPUT_FLOAT,
GPIO6);
/* Reset SPI, SPI_CR1 register cleared, SPI is disabled */
spi_reset(SPI1);
/* Explicitly disable I2S in favour of SPI operation */
SPI1_I2SCFGR = 0;
/* Set up SPI in Master mode with:
* Clock baud rate: 1/64 of peripheral clock frequency
* Clock polarity: Idle High
* Clock phase: Data valid on 2nd clock pulse
* Data frame format: 8-bit or 16-bit
* Frame format: MSB First
*/
#if USE_16BIT_TRANSFERS
spi_init_master(SPI1, SPI_CR1_BAUDRATE_FPCLK_DIV_64, SPI_CR1_CPOL_CLK_TO_1_WHEN_IDLE,
SPI_CR1_CPHA_CLK_TRANSITION_2, SPI_CR1_DFF_16BIT, SPI_CR1_MSBFIRST);
#else
spi_init_master(SPI1, SPI_CR1_BAUDRATE_FPCLK_DIV_64, SPI_CR1_CPOL_CLK_TO_1_WHEN_IDLE,
SPI_CR1_CPHA_CLK_TRANSITION_2, SPI_CR1_DFF_8BIT, SPI_CR1_MSBFIRST);
#endif
/*
* Set NSS management to software.
*
* Note:
* Setting nss high is very important, even if we are controlling the GPIO
* ourselves this bit needs to be at least set to 1, otherwise the spi
* peripheral will not send any data out.
*/
spi_enable_software_slave_management(SPI1);
spi_set_nss_high(SPI1);
/* Enable SPI1 periph. */
spi_enable(SPI1);
}
static void dma_int_enable(void) {
/* SPI1 RX on DMA1 Channel 2 */
nvic_set_priority(NVIC_DMA1_CHANNEL2_IRQ, 0);
nvic_enable_irq(NVIC_DMA1_CHANNEL2_IRQ);
/* SPI1 TX on DMA1 Channel 3 */
nvic_set_priority(NVIC_DMA1_CHANNEL3_IRQ, 0);
nvic_enable_irq(NVIC_DMA1_CHANNEL3_IRQ);
}
/* Not used in this example
static void dma_int_disable(void) {
nvic_disable_irq(NVIC_DMA1_CHANNEL2_IRQ);
nvic_disable_irq(NVIC_DMA1_CHANNEL3_IRQ);
}
*/
static void dma_setup(void)
{
dma_int_enable();
}
#if USE_16BIT_TRANSFERS
static int spi_dma_transceive(u16 *tx_buf, int tx_len, u16 *rx_buf, int rx_len)
#else
static int spi_dma_transceive(u8 *tx_buf, int tx_len, u8 *rx_buf, int rx_len)
#endif
{
/* Check for 0 length in both tx and rx */
if ((rx_len < 1) && (tx_len < 1)) {
/* return -1 as error */
return -1;
}
/* Reset DMA channels*/
dma_channel_reset(DMA1, DMA_CHANNEL2);
dma_channel_reset(DMA1, DMA_CHANNEL3);
/* Reset SPI data and status registers.
* Here we assume that the SPI peripheral is NOT
* busy any longer, i.e. the last activity was verified
* complete elsewhere in the program.
*/
volatile u8 temp_data __attribute__ ((unused));
while (SPI_SR(SPI1) & (SPI_SR_RXNE | SPI_SR_OVR)) {
temp_data = SPI_DR(SPI1);
}
/* Reset status flag appropriately (both 0 case caught above) */
transceive_status = NONE;
if (rx_len < 1) {
transceive_status = ONE;
}
if (tx_len < 1) {
transceive_status = ONE;
}
/* Set up rx dma, note it has higher priority to avoid overrun */
if (rx_len > 0) {
dma_set_peripheral_address(DMA1, DMA_CHANNEL2, (u32)&SPI1_DR);
dma_set_memory_address(DMA1, DMA_CHANNEL2, (u32)rx_buf);
dma_set_number_of_data(DMA1, DMA_CHANNEL2, rx_len);
dma_set_read_from_peripheral(DMA1, DMA_CHANNEL2);
dma_enable_memory_increment_mode(DMA1, DMA_CHANNEL2);
#if USE_16BIT_TRANSFERS
dma_set_peripheral_size(DMA1, DMA_CHANNEL2, DMA_CCR_PSIZE_16BIT);
dma_set_memory_size(DMA1, DMA_CHANNEL2, DMA_CCR_MSIZE_16BIT);
#else
dma_set_peripheral_size(DMA1, DMA_CHANNEL2, DMA_CCR_PSIZE_8BIT);
dma_set_memory_size(DMA1, DMA_CHANNEL2, DMA_CCR_MSIZE_8BIT);
#endif
dma_set_priority(DMA1, DMA_CHANNEL2, DMA_CCR_PL_VERY_HIGH);
}
/* Set up tx dma */
if (tx_len > 0) {
dma_set_peripheral_address(DMA1, DMA_CHANNEL3, (u32)&SPI1_DR);
dma_set_memory_address(DMA1, DMA_CHANNEL3, (u32)tx_buf);
dma_set_number_of_data(DMA1, DMA_CHANNEL3, tx_len);
dma_set_read_from_memory(DMA1, DMA_CHANNEL3);
dma_enable_memory_increment_mode(DMA1, DMA_CHANNEL3);
#if USE_16BIT_TRANSFERS
dma_set_peripheral_size(DMA1, DMA_CHANNEL3, DMA_CCR_PSIZE_16BIT);
dma_set_memory_size(DMA1, DMA_CHANNEL3, DMA_CCR_MSIZE_16BIT);
#else
dma_set_peripheral_size(DMA1, DMA_CHANNEL3, DMA_CCR_PSIZE_8BIT);
dma_set_memory_size(DMA1, DMA_CHANNEL3, DMA_CCR_MSIZE_8BIT);
#endif
dma_set_priority(DMA1, DMA_CHANNEL3, DMA_CCR_PL_HIGH);
}
/* Enable dma transfer complete interrupts */
if (rx_len > 0) {
dma_enable_transfer_complete_interrupt(DMA1, DMA_CHANNEL2);
}
if (tx_len > 0) {
dma_enable_transfer_complete_interrupt(DMA1, DMA_CHANNEL3);
}
/* Activate dma channels */
if (rx_len > 0) {
dma_enable_channel(DMA1, DMA_CHANNEL2);
}
if (tx_len > 0) {
dma_enable_channel(DMA1, DMA_CHANNEL3);
}
/* Enable the spi transfer via dma
* This will immediately start the transmission,
* after which when the receive is complete, the
* receive dma will activate
*/
if (rx_len > 0) {
spi_enable_rx_dma(SPI1);
}
if (tx_len > 0) {
spi_enable_tx_dma(SPI1);
}
return 0;
}
/* SPI receive completed with DMA */
void dma1_channel2_isr(void)
{
gpio_set(GPIOA,GPIO4);
if ((DMA1_ISR &DMA_ISR_TCIF2) != 0) {
DMA1_IFCR |= DMA_IFCR_CTCIF2;
}
dma_disable_transfer_complete_interrupt(DMA1, DMA_CHANNEL2);
spi_disable_rx_dma(SPI1);
dma_disable_channel(DMA1, DMA_CHANNEL2);
/* Increment the status to indicate one of the transfers is complete */
transceive_status++;
gpio_clear(GPIOA,GPIO4);
}
/* SPI transmit completed with DMA */
void dma1_channel3_isr(void)
{
gpio_set(GPIOB,GPIO1);
if ((DMA1_ISR &DMA_ISR_TCIF3) != 0) {
DMA1_IFCR |= DMA_IFCR_CTCIF3;
}
dma_disable_transfer_complete_interrupt(DMA1, DMA_CHANNEL3);
spi_disable_tx_dma(SPI1);
dma_disable_channel(DMA1, DMA_CHANNEL3);
/* Increment the status to indicate one of the transfers is complete */
transceive_status++;
gpio_clear(GPIOB,GPIO1);
}
static void usart_setup(void)
{
/* Setup GPIO pin GPIO_USART2_TX and GPIO_USART2_RX. */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO_USART2_TX);
gpio_set_mode(GPIOA, GPIO_MODE_INPUT,
GPIO_CNF_INPUT_FLOAT, GPIO_USART2_RX);
/* Setup UART parameters. */
usart_set_baudrate(USART2, 9600);
usart_set_databits(USART2, 8);
usart_set_stopbits(USART2, USART_STOPBITS_1);
usart_set_mode(USART2, USART_MODE_TX_RX);
usart_set_parity(USART2, USART_PARITY_NONE);
usart_set_flow_control(USART2, USART_FLOWCONTROL_NONE);
/* Finally enable the USART. */
usart_enable(USART2);
}
int _write(int file, char *ptr, int len)
{
int i;
if (file == 1) {
for (i = 0; i < len; i++)
usart_send_blocking(USART2, ptr[i]);
return i;
}
errno = EIO;
return -1;
}
static void gpio_setup(void)
{
/* Set GPIO8 (in GPIO port A) to 'output push-pull'. */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO8);
/* Use the extra pins to signal when the ISRs are running */
/* First, SPI1 - SS pin on Lisa/M v2.0 */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO4);
/* Then, SPI1 - DRDY pin on Lisa/M v2.0 */
gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO1);
}
int main(void)
{
int counter_tx = 0;
int counter_rx = 0;
cnt_state counter_state = TX_UP_RX_HOLD;
int i = 0;
/* Transmit and Receive packets, set transmit to index and receive to known unused value to aid in debugging */
#if USE_16BIT_TRANSFERS
u16 tx_packet[16] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
u16 rx_packet[16] = {0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42};
#else
u8 tx_packet[16] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
u8 rx_packet[16] = {0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42};
#endif
transceive_status = DONE;
clock_setup();
gpio_setup();
usart_setup();
spi_setup();
dma_setup();
#if USE_16BIT_TRANSFERS
printf("SPI with DMA Transfer Test using 16bit option (Use loopback)\r\n\r\n");
#else
printf("SPI with DMA Transfer Test using 8bit option (Use loopback)\r\n\r\n");
#endif
/* Blink the LED (PA8) on the board with every transmitted byte. */
while (1) {
/* LED on/off */
gpio_toggle(GPIOA, GPIO8);
/* Print what is going to be sent on the SPI bus */
printf("Sending packet (tx len %02i):", counter_tx);
for (i = 0; i < counter_tx; i++)
{
printf(" 0x%02x,", tx_packet[i]);
}
printf("\r\n");
/* Start a transceive */
if (spi_dma_transceive(tx_packet, counter_tx, rx_packet, counter_rx)) {
printf("Attempted 0 length tx and rx packets\r\n");
}
/* Wait until transceive complete.
* This checks the state flag as well as follows the
* procedure on the Reference Manual (RM0008 rev 14
* Section 25.3.9 page 692, the note.)
*/
while (transceive_status != DONE)
;
while (!(SPI_SR(SPI1) & SPI_SR_TXE))
;
while (SPI_SR(SPI1) & SPI_SR_BSY)
;
/* Print what was received on the SPI bus */
printf("Received Packet (rx len %02i):", counter_rx);
for (i = 0; i < 16; i++) {
printf(" 0x%02x,", rx_packet[i]);
}
printf("\r\n\r\n");
/* Update counters
* If we use the loopback method, we can not
* have a rx length longer than the tx length.
* Testing rx lengths longer than tx lengths
* requires an actual slave device that will
* return data.
*/
switch (counter_state) {
case TX_UP_RX_HOLD:
counter_tx++;
if (counter_tx > 15) {
counter_state = TX_HOLD_RX_UP;
}
break;
case TX_HOLD_RX_UP:
counter_rx++;
if (counter_rx > 15) {
counter_state = TX_DOWN_RX_DOWN;
}
break;
case TX_DOWN_RX_DOWN:
counter_tx--;
counter_rx--;
if (counter_tx < 1) {
counter_state = TX_UP_RX_HOLD;
}
break;
default:
;
}
/* Reset receive buffer for consistency */
for (i = 0; i < 16; i++) {
rx_packet[i] = 0x42;
}
}
return 0;
}

28
examples/stm32/f1/lisa-m-2/spi_dma_adv/Makefile
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@ -1,28 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
BINARY = spi_dma_adv
# Comment the following line if you _don't_ have luftboot flashed!
LDFLAGS += -Wl,-Ttext=0x8002000
CFLAGS += -std=c99
LDSCRIPT = ../lisa-m.ld
include ../../Makefile.include

17
examples/stm32/f1/lisa-m-2/spi_dma_adv/README
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@ -1,17 +0,0 @@
------------------------------------------------------------------------------
README
------------------------------------------------------------------------------
This example program demonstrates SPI transceive with DMA on Lisa/M 2.0 board
(http://paparazzi.enac.fr/wiki/Lisa/M_v20 for details).
The terminal settings for the receiving device/PC are 9600 8n1.
The example expects a loopback connection between the MISO and MOSI pins on
SPI1. The DRDY and SS pins (on the Lisa/M v2.0 SPI1 connector) are used as
GPIO to time the tx and rx ISRs, respectively. Use a scope or logic analyzer.
The tx length is incremented, followed by the rx length, after which the tx is
decremented, then the rx is decremented. This is repeated in a loop. In this
example, rx lengths longer than tx lengths are handled by using two dma transmits
one after the other, handled inside the tx dma ISR.

506
examples/stm32/f1/lisa-m-2/spi_dma_adv/spi_dma_adv.c
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@ -1,506 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
* Copyright (C) 2013 Stephen Dwyer <scdwyer@ualberta.ca>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libopencm3/stm32/rcc.h>
#include <libopencm3/stm32/gpio.h>
#include <libopencm3/stm32/usart.h>
#include <libopencm3/stm32/dma.h>
#include <libopencm3/cm3/nvic.h>
#include <libopencm3/stm32/spi.h>
#include <stdio.h>
#include <errno.h>
#ifndef USE_16BIT_TRANSFERS
#define USE_16BIT_TRANSFERS 0
#endif
/* This is for the counter state flag */
typedef enum {
TX_UP_RX_HOLD = 0,
TX_HOLD_RX_UP,
TX_DOWN_RX_HOLD,
TX_HOLD_RX_DOWN
} cnt_state;
/* This is a global spi state flag */
typedef enum {
NONE = 0,
ONE,
DONE
} trans_status;
volatile trans_status transceive_status;
/* Global for dummy tx dma transfer */
int rx_buf_remainder = 0;
#if USE_16BIT_TRANSFERS
u16 dummy_tx_buf = 0xdd;
#else
u8 dummy_tx_buf = 0xdd;
#endif
int _write(int file, char *ptr, int len);
static void clock_setup(void)
{
rcc_clock_setup_in_hse_12mhz_out_72mhz();
/* Enable GPIOA, GPIOB, GPIOC clock. */
rcc_peripheral_enable_clock(&RCC_APB2ENR,
RCC_APB2ENR_IOPAEN | RCC_APB2ENR_IOPBEN |
RCC_APB2ENR_IOPCEN);
/* Enable clocks for GPIO port A (for GPIO_USART2_TX) and USART2. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN |
RCC_APB2ENR_AFIOEN);
rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_USART2EN);
/* Enable SPI1 Periph and gpio clocks */
rcc_peripheral_enable_clock(&RCC_APB2ENR,
RCC_APB2ENR_SPI1EN);
/* Enable DMA1 clock */
rcc_peripheral_enable_clock(&RCC_AHBENR, RCC_AHBENR_DMA1EN);
}
static void spi_setup(void) {
/* Configure GPIOs: SS=PA4, SCK=PA5, MISO=PA6 and MOSI=PA7
* For now ignore the SS pin so we can use it to time the ISRs
*/
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, /* GPIO4 | */
GPIO5 |
GPIO7 );
gpio_set_mode(GPIOA, GPIO_MODE_INPUT, GPIO_CNF_INPUT_FLOAT,
GPIO6);
/* Reset SPI, SPI_CR1 register cleared, SPI is disabled */
spi_reset(SPI1);
/* Explicitly disable I2S in favour of SPI operation */
SPI1_I2SCFGR = 0;
/* Set up SPI in Master mode with:
* Clock baud rate: 1/64 of peripheral clock frequency
* Clock polarity: Idle High
* Clock phase: Data valid on 2nd clock pulse
* Data frame format: 8-bit or 16-bit
* Frame format: MSB First
*/
#if USE_16BIT_TRANSFERS
spi_init_master(SPI1, SPI_CR1_BAUDRATE_FPCLK_DIV_64, SPI_CR1_CPOL_CLK_TO_1_WHEN_IDLE,
SPI_CR1_CPHA_CLK_TRANSITION_2, SPI_CR1_DFF_16BIT, SPI_CR1_MSBFIRST);
#else
spi_init_master(SPI1, SPI_CR1_BAUDRATE_FPCLK_DIV_64, SPI_CR1_CPOL_CLK_TO_1_WHEN_IDLE,
SPI_CR1_CPHA_CLK_TRANSITION_2, SPI_CR1_DFF_8BIT, SPI_CR1_MSBFIRST);
#endif
/*
* Set NSS management to software.
*
* Note:
* Setting nss high is very important, even if we are controlling the GPIO
* ourselves this bit needs to be at least set to 1, otherwise the spi
* peripheral will not send any data out.
*/
spi_enable_software_slave_management(SPI1);
spi_set_nss_high(SPI1);
/* Enable SPI1 periph. */
spi_enable(SPI1);
}
static void dma_int_enable(void) {
/* SPI1 RX on DMA1 Channel 2 */
nvic_set_priority(NVIC_DMA1_CHANNEL2_IRQ, 0);
nvic_enable_irq(NVIC_DMA1_CHANNEL2_IRQ);
/* SPI1 TX on DMA1 Channel 3 */
nvic_set_priority(NVIC_DMA1_CHANNEL3_IRQ, 0);
nvic_enable_irq(NVIC_DMA1_CHANNEL3_IRQ);
}
/* Not used in this example
static void dma_int_disable(void) {
nvic_disable_irq(NVIC_DMA1_CHANNEL2_IRQ);
nvic_disable_irq(NVIC_DMA1_CHANNEL3_IRQ);
}
*/
static void dma_setup(void)
{
dma_int_enable();
}
#if USE_16BIT_TRANSFERS
static int spi_dma_transceive(u16 *tx_buf, int tx_len, u16 *rx_buf, int rx_len)
#else
static int spi_dma_transceive(u8 *tx_buf, int tx_len, u8 *rx_buf, int rx_len)
#endif
{
/* Check for 0 length in both tx and rx */
if ((rx_len < 1) && (tx_len < 1)) {
/* return -1 as error */
return -1;
}
/* Reset DMA channels*/
dma_channel_reset(DMA1, DMA_CHANNEL2);
dma_channel_reset(DMA1, DMA_CHANNEL3);
/* Reset SPI data and status registers.
* Here we assume that the SPI peripheral is NOT
* busy any longer, i.e. the last activity was verified
* complete elsewhere in the program.
*/
volatile u8 temp_data __attribute__ ((unused));
while (SPI_SR(SPI1) & (SPI_SR_RXNE | SPI_SR_OVR)) {
temp_data = SPI_DR(SPI1);
}
/* Reset status flag appropriately (both 0 case caught above) */
transceive_status = NONE;
if (rx_len < 1) {
transceive_status = ONE;
}
/* Determine tx length case to change behaviour
* If tx_len >= rx_len, then normal case, run both DMAs with normal settings
* If rx_len == 0, just don't run the rx DMA at all
* If tx_len == 0, use a dummy buf and set the tx dma to transfer the same
* amount as the rx_len, to ensure everything is clocked in
* If 0 < tx_len < rx_len, first do a normal case, then on the tx finished
* interrupt, set up a new dummyy buf tx dma transfer for the remaining
* required clock cycles (handled in tx dma complete interrupt)
*/
if ((tx_len > 0) && (tx_len < rx_len)) {
rx_buf_remainder = rx_len - tx_len;
}
/* Set up rx dma, note it has higher priority to avoid overrun */
if (rx_len > 0) {
dma_set_peripheral_address(DMA1, DMA_CHANNEL2, (u32)&SPI1_DR);
dma_set_memory_address(DMA1, DMA_CHANNEL2, (u32)rx_buf);
dma_set_number_of_data(DMA1, DMA_CHANNEL2, rx_len);
dma_set_read_from_peripheral(DMA1, DMA_CHANNEL2);
dma_enable_memory_increment_mode(DMA1, DMA_CHANNEL2);
#if USE_16BIT_TRANSFERS
dma_set_peripheral_size(DMA1, DMA_CHANNEL2, DMA_CCR_PSIZE_16BIT);
dma_set_memory_size(DMA1, DMA_CHANNEL2, DMA_CCR_MSIZE_16BIT);
#else
dma_set_peripheral_size(DMA1, DMA_CHANNEL2, DMA_CCR_PSIZE_8BIT);
dma_set_memory_size(DMA1, DMA_CHANNEL2, DMA_CCR_MSIZE_8BIT);
#endif
dma_set_priority(DMA1, DMA_CHANNEL2, DMA_CCR_PL_VERY_HIGH);
}
/* Set up tx dma (must always run tx to get clock signal) */
if (tx_len > 0) {
/* Here we have a regular tx transfer */
dma_set_peripheral_address(DMA1, DMA_CHANNEL3, (u32)&SPI1_DR);
dma_set_memory_address(DMA1, DMA_CHANNEL3, (u32)tx_buf);
dma_set_number_of_data(DMA1, DMA_CHANNEL3, tx_len);
dma_set_read_from_memory(DMA1, DMA_CHANNEL3);
dma_enable_memory_increment_mode(DMA1, DMA_CHANNEL3);
#if USE_16BIT_TRANSFERS
dma_set_peripheral_size(DMA1, DMA_CHANNEL3, DMA_CCR_PSIZE_16BIT);
dma_set_memory_size(DMA1, DMA_CHANNEL3, DMA_CCR_MSIZE_16BIT);
#else
dma_set_peripheral_size(DMA1, DMA_CHANNEL3, DMA_CCR_PSIZE_8BIT);
dma_set_memory_size(DMA1, DMA_CHANNEL3, DMA_CCR_MSIZE_8BIT);
#endif
dma_set_priority(DMA1, DMA_CHANNEL3, DMA_CCR_PL_HIGH);
} else {
/* Here we aren't transmitting any real data, use the dummy buffer
* and set the length to the rx_len to get all rx data in, while
* not incrementing the memory pointer
*/
dma_set_peripheral_address(DMA1, DMA_CHANNEL3, (u32)&SPI1_DR);
dma_set_memory_address(DMA1, DMA_CHANNEL3, (u32)(&dummy_tx_buf)); // Change here
dma_set_number_of_data(DMA1, DMA_CHANNEL3, rx_len); // Change here
dma_set_read_from_memory(DMA1, DMA_CHANNEL3);
dma_disable_memory_increment_mode(DMA1, DMA_CHANNEL3); // Change here
#if USE_16BIT_TRANSFERS
dma_set_peripheral_size(DMA1, DMA_CHANNEL3, DMA_CCR_PSIZE_16BIT);
dma_set_memory_size(DMA1, DMA_CHANNEL3, DMA_CCR_MSIZE_16BIT);
#else
dma_set_peripheral_size(DMA1, DMA_CHANNEL3, DMA_CCR_PSIZE_8BIT);
dma_set_memory_size(DMA1, DMA_CHANNEL3, DMA_CCR_MSIZE_8BIT);
#endif
dma_set_priority(DMA1, DMA_CHANNEL3, DMA_CCR_PL_HIGH);
}
/* Enable dma transfer complete interrupts */
if (rx_len > 0) {
dma_enable_transfer_complete_interrupt(DMA1, DMA_CHANNEL2);
}
dma_enable_transfer_complete_interrupt(DMA1, DMA_CHANNEL3);
/* Activate dma channels */
if (rx_len > 0) {
dma_enable_channel(DMA1, DMA_CHANNEL2);
}
dma_enable_channel(DMA1, DMA_CHANNEL3);
/* Enable the spi transfer via dma
* This will immediately start the transmission,
* after which when the receive is complete, the
* receive dma will activate
*/
if (rx_len > 0) {
spi_enable_rx_dma(SPI1);
}
spi_enable_tx_dma(SPI1);
return 0;
}
/* SPI receive completed with DMA */
void dma1_channel2_isr(void)
{
gpio_set(GPIOA,GPIO4);
if ((DMA1_ISR &DMA_ISR_TCIF2) != 0) {
DMA1_IFCR |= DMA_IFCR_CTCIF2;
}
dma_disable_transfer_complete_interrupt(DMA1, DMA_CHANNEL2);
spi_disable_rx_dma(SPI1);
dma_disable_channel(DMA1, DMA_CHANNEL2);
/* Increment the status to indicate one of the transfers is complete */
transceive_status++;
gpio_clear(GPIOA,GPIO4);
}
/* SPI transmit completed with DMA */
void dma1_channel3_isr(void)
{
gpio_set(GPIOB,GPIO1);
if ((DMA1_ISR &DMA_ISR_TCIF3) != 0) {
DMA1_IFCR |= DMA_IFCR_CTCIF3;
}
dma_disable_transfer_complete_interrupt(DMA1, DMA_CHANNEL3);
spi_disable_tx_dma(SPI1);
dma_disable_channel(DMA1, DMA_CHANNEL3);
/* If tx_len < rx_len, create a dummy transfer to clock in the remaining
* rx data
*/
if (rx_buf_remainder > 0) {
dma_channel_reset(DMA1, DMA_CHANNEL3);
dma_set_peripheral_address(DMA1, DMA_CHANNEL3, (u32)&SPI1_DR);
dma_set_memory_address(DMA1, DMA_CHANNEL3, (u32)(&dummy_tx_buf)); // Change here
dma_set_number_of_data(DMA1, DMA_CHANNEL3, rx_buf_remainder); // Change here
dma_set_read_from_memory(DMA1, DMA_CHANNEL3);
dma_disable_memory_increment_mode(DMA1, DMA_CHANNEL3); // Change here
#if USE_16BIT_TRANSFERS
dma_set_peripheral_size(DMA1, DMA_CHANNEL3, DMA_CCR_PSIZE_16BIT);
dma_set_memory_size(DMA1, DMA_CHANNEL3, DMA_CCR_MSIZE_16BIT);
#else
dma_set_peripheral_size(DMA1, DMA_CHANNEL3, DMA_CCR_PSIZE_8BIT);
dma_set_memory_size(DMA1, DMA_CHANNEL3, DMA_CCR_MSIZE_8BIT);
#endif
dma_set_priority(DMA1, DMA_CHANNEL3, DMA_CCR_PL_HIGH);
rx_buf_remainder = 0; // Clear the buffer remainder to disable this section later
dma_enable_transfer_complete_interrupt(DMA1, DMA_CHANNEL3);
dma_enable_channel(DMA1, DMA_CHANNEL3);
spi_enable_tx_dma(SPI1);
} else {
/* Increment the status to indicate one of the transfers is complete */
transceive_status++;
}
gpio_clear(GPIOB,GPIO1);
}
static void usart_setup(void)
{
/* Setup GPIO pin GPIO_USART2_TX and GPIO_USART2_RX. */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO_USART2_TX);
gpio_set_mode(GPIOA, GPIO_MODE_INPUT,
GPIO_CNF_INPUT_FLOAT, GPIO_USART2_RX);
/* Setup UART parameters. */
usart_set_baudrate(USART2, 9600);
usart_set_databits(USART2, 8);
usart_set_stopbits(USART2, USART_STOPBITS_1);
usart_set_mode(USART2, USART_MODE_TX_RX);
usart_set_parity(USART2, USART_PARITY_NONE);
usart_set_flow_control(USART2, USART_FLOWCONTROL_NONE);
/* Finally enable the USART. */
usart_enable(USART2);
}
int _write(int file, char *ptr, int len)
{
int i;
if (file == 1) {
for (i = 0; i < len; i++)
usart_send_blocking(USART2, ptr[i]);
return i;
}
errno = EIO;
return -1;
}
static void gpio_setup(void)
{
/* Set GPIO8 (in GPIO port A) to 'output push-pull'. */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO8);
/* Use the extra pins to signal when the ISRs are running */
/* First, SPI1 - SS pin on Lisa/M v2.0 */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO4);
/* Then, SPI1 - DRDY pin on Lisa/M v2.0 */
gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO1);
}
int main(void)
{
int counter_tx = 0;
int counter_rx = 0;
cnt_state counter_state = TX_UP_RX_HOLD;
int i = 0;
/* Transmit and Receive packets, set transmit to index and receive to known unused value to aid in debugging */
#if USE_16BIT_TRANSFERS
u16 tx_packet[16] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
u16 rx_packet[16] = {0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42};
#else
u8 tx_packet[16] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
u8 rx_packet[16] = {0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42};
#endif
transceive_status = DONE;
clock_setup();
gpio_setup();
usart_setup();
spi_setup();
dma_setup();
printf("SPI with DMA Transfer Test (Use loopback)\r\n\r\n");
/* Blink the LED (PA8) on the board with every transmitted byte. */
while (1) {
/* LED on/off */
gpio_toggle(GPIOA, GPIO8);
/* Print what is going to be sent on the SPI bus */
printf("Sending packet (tx len %02i):", counter_tx);
for (i = 0; i < counter_tx; i++)
{
printf(" 0x%02x,", tx_packet[i]);
}
printf("\r\n");
/* Start a transceive */
if (spi_dma_transceive(tx_packet, counter_tx, rx_packet, counter_rx)) {
printf("Attempted 0 length tx and rx packets\r\n");
}
/* Wait until transceive complete.
* This checks the state flag as well as follows the
* procedure on the Reference Manual (RM0008 rev 14
* Section 25.3.9 page 692, the note.)
*/
while (transceive_status != DONE)
;
while (!(SPI_SR(SPI1) & SPI_SR_TXE))
;
while (SPI_SR(SPI1) & SPI_SR_BSY)
;
/* Print what was received on the SPI bus */
printf("Received Packet (rx len %02i):", counter_rx);
for (i = 0; i < 16; i++) {
printf(" 0x%02x,", rx_packet[i]);
}
printf("\r\n\r\n");
/* Update counters
* If we use the loopback method, we can not
* have a rx length longer than the tx length.
* Testing rx lengths longer than tx lengths
* requires an actual slave device that will
* return data.
*/
switch (counter_state) {
case TX_UP_RX_HOLD:
counter_tx++;
if (counter_tx > 15) {
counter_state = TX_HOLD_RX_UP;
}
break;
case TX_HOLD_RX_UP:
counter_rx++;
if (counter_rx > 15) {
counter_state = TX_DOWN_RX_HOLD;
}
break;
case TX_DOWN_RX_HOLD:
counter_tx--;
if (counter_tx < 1) {
counter_state = TX_HOLD_RX_DOWN;
}
break;
case TX_HOLD_RX_DOWN:
counter_rx--;
if (counter_rx < 1) {
counter_state = TX_UP_RX_HOLD;
}
break;
default:
;
}
/* Reset receive buffer for consistency */
for (i = 0; i < 16; i++) {
#if USE_16BIT_TRANSFERS
tx_packet[i] = (u16)i;
#else
tx_packet[i] = (u8)i;
#endif
rx_packet[i] = 0x42;
}
}
return 0;
}

28
examples/stm32/f1/lisa-m-2/usart/Makefile
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@ -1,28 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
BINARY = usart
# Comment the following line if you _don't_ have luftboot flashed!
LDFLAGS += -Wl,-Ttext=0x8002000
CFLAGS += -std=c99
LDSCRIPT = ../lisa-m.ld
include ../../Makefile.include

12
examples/stm32/f1/lisa-m-2/usart/README
View File

@ -1,12 +0,0 @@
------------------------------------------------------------------------------
README
------------------------------------------------------------------------------
This example program sends some characters on USART2 on Lisa/M 2.0 board
(see http://paparazzi.enac.fr/wiki/LisaM for details).
The terminal settings for the receiving device/PC are 38400 8n1.
The sending is done in a blocking way in the code, see the usart_irq example
for a more elaborate USART example.

86
examples/stm32/f1/lisa-m-2/usart/usart.c
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@ -1,86 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libopencm3/stm32/f1/rcc.h>
#include <libopencm3/stm32/f1/gpio.h>
#include <libopencm3/stm32/usart.h>
static void clock_setup(void)
{
rcc_clock_setup_in_hse_12mhz_out_72mhz();
/* Enable GPIOA, GPIOB, GPIOC clock. */
rcc_peripheral_enable_clock(&RCC_APB2ENR,
RCC_APB2ENR_IOPAEN | RCC_APB2ENR_IOPBEN |
RCC_APB2ENR_IOPCEN);
/* Enable clocks for GPIO port B (for GPIO_USART3_TX) and USART3. */
rcc_peripheral_enable_clock(&RCC_APB1ENR,
RCC_APB1ENR_USART2EN);
}
static void usart_setup(void)
{
/* Setup GPIO pin GPIO_USART2_TX. */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO_USART2_TX);
/* Setup UART parameters. */
usart_set_baudrate(USART2, 38400);
usart_set_databits(USART2, 8);
usart_set_stopbits(USART2, USART_STOPBITS_1);
usart_set_mode(USART2, USART_MODE_TX);
usart_set_parity(USART2, USART_PARITY_NONE);
usart_set_flow_control(USART2, USART_FLOWCONTROL_NONE);
/* Finally enable the USART. */
usart_enable(USART2);
}
static void gpio_setup(void)
{
/* Set GPIO8 (in GPIO port A) to 'output push-pull'. */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO8);
}
int main(void)
{
int i, j = 0, c = 0;
clock_setup();
gpio_setup();
usart_setup();
/* Blink the LED (PA8) on the board with every transmitted byte. */
while (1) {
gpio_toggle(GPIOA, GPIO8); /* LED on/off */
usart_send_blocking(USART2, c + '0'); /* USART2: Send byte. */
c = (c == 9) ? 0 : c + 1; /* Increment c. */
if ((j++ % 80) == 0) { /* Newline after line full. */
usart_send_blocking(USART2, '\r');
usart_send_blocking(USART2, '\n');
}
for (i = 0; i < 800000; i++) /* Wait a bit. */
__asm__("nop");
}
return 0;
}

28
examples/stm32/f1/lisa-m-2/usart_dma/Makefile
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@ -1,28 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
BINARY = usart_dma
# Comment the following line if you _don't_ have luftboot flashed!
LDFLAGS += -Wl,-Ttext=0x8002000
CFLAGS += -std=c99
LDSCRIPT = ../lisa-m.ld
include ../../Makefile.include

199
examples/stm32/f1/lisa-m-2/usart_dma/usart_dma.c
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@ -1,199 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libopencm3/stm32/f1/rcc.h>
#include <libopencm3/stm32/f1/gpio.h>
#include <libopencm3/stm32/usart.h>
#include <libopencm3/stm32/f1/dma.h>
#include <libopencm3/cm3/nvic.h>
static void clock_setup(void)
{
rcc_clock_setup_in_hse_12mhz_out_72mhz();
/* Enable GPIOA, GPIOB, GPIOC clock. */
rcc_peripheral_enable_clock(&RCC_APB2ENR,
RCC_APB2ENR_IOPAEN | RCC_APB2ENR_IOPBEN |
RCC_APB2ENR_IOPCEN);
/* Enable clocks for GPIO port B (for GPIO_USART3_TX) and USART3. */
rcc_peripheral_enable_clock(&RCC_APB1ENR,
RCC_APB1ENR_USART2EN);
/* Enable DMA1 clock */
rcc_peripheral_enable_clock(&RCC_AHBENR, RCC_AHBENR_DMA1EN);
}
static void usart_setup(void)
{
/* Setup GPIO pin GPIO_USART2_TX and GPIO_USART2_RX. */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO_USART2_TX);
gpio_set_mode(GPIOA, GPIO_MODE_INPUT,
GPIO_CNF_INPUT_FLOAT, GPIO_USART2_RX);
/* Setup UART parameters. */
usart_set_baudrate(USART2, 38400);
usart_set_databits(USART2, 8);
usart_set_stopbits(USART2, USART_STOPBITS_1);
usart_set_mode(USART2, USART_MODE_TX_RX);
usart_set_parity(USART2, USART_PARITY_NONE);
usart_set_flow_control(USART2, USART_FLOWCONTROL_NONE);
/* Finally enable the USART. */
usart_enable(USART2);
nvic_set_priority(NVIC_DMA1_CHANNEL7_IRQ, 0);
nvic_enable_irq(NVIC_DMA1_CHANNEL7_IRQ);
nvic_set_priority(NVIC_DMA1_CHANNEL6_IRQ, 0);
nvic_enable_irq(NVIC_DMA1_CHANNEL6_IRQ);
}
static void dma_write(char *data, int size)
{
/*
* Using channel 7 for USART2_TX
*/
/* Reset DMA channel*/
dma_channel_reset(DMA1, DMA_CHANNEL7);
dma_set_peripheral_address(DMA1, DMA_CHANNEL7, (u32)&USART2_DR);
dma_set_memory_address(DMA1, DMA_CHANNEL7, (u32)data);
dma_set_number_of_data(DMA1, DMA_CHANNEL7, size);
dma_set_read_from_memory(DMA1, DMA_CHANNEL7);
dma_enable_memory_increment_mode(DMA1, DMA_CHANNEL7);
dma_set_peripheral_size(DMA1, DMA_CHANNEL7, DMA_CCR_PSIZE_8BIT);
dma_set_memory_size(DMA1, DMA_CHANNEL7, DMA_CCR_MSIZE_8BIT);
dma_set_priority(DMA1, DMA_CHANNEL7, DMA_CCR_PL_VERY_HIGH);
dma_enable_transfer_complete_interrupt(DMA1, DMA_CHANNEL7);
dma_enable_channel(DMA1, DMA_CHANNEL7);
usart_enable_tx_dma(USART2);
}
volatile int transfered = 0;
void dma1_channel7_isr(void)
{
if ((DMA1_ISR &DMA_ISR_TCIF7) != 0) {
DMA1_IFCR |= DMA_IFCR_CTCIF7;
transfered = 1;
}
dma_disable_transfer_complete_interrupt(DMA1, DMA_CHANNEL7);
usart_disable_tx_dma(USART2);
dma_disable_channel(DMA1, DMA_CHANNEL7);
}
static void dma_read(char *data, int size)
{
/*
* Using channel 6 for USART2_RX
*/
/* Reset DMA channel*/
dma_channel_reset(DMA1, DMA_CHANNEL6);
dma_set_peripheral_address(DMA1, DMA_CHANNEL6, (u32)&USART2_DR);
dma_set_memory_address(DMA1, DMA_CHANNEL6, (u32)data);
dma_set_number_of_data(DMA1, DMA_CHANNEL6, size);
dma_set_read_from_peripheral(DMA1, DMA_CHANNEL6);
dma_enable_memory_increment_mode(DMA1, DMA_CHANNEL6);
dma_set_peripheral_size(DMA1, DMA_CHANNEL6, DMA_CCR_PSIZE_8BIT);
dma_set_memory_size(DMA1, DMA_CHANNEL6, DMA_CCR_MSIZE_8BIT);
dma_set_priority(DMA1, DMA_CHANNEL6, DMA_CCR_PL_HIGH);
dma_enable_transfer_complete_interrupt(DMA1, DMA_CHANNEL6);
dma_enable_channel(DMA1, DMA_CHANNEL6);
usart_enable_rx_dma(USART2);
}
volatile int received = 0;
void dma1_channel6_isr(void)
{
if ((DMA1_ISR &DMA_ISR_TCIF6) != 0) {
DMA1_IFCR |= DMA_IFCR_CTCIF6;
received = 1;
}
dma_disable_transfer_complete_interrupt(DMA1, DMA_CHANNEL6);
usart_disable_rx_dma(USART2);
dma_disable_channel(DMA1, DMA_CHANNEL6);
}
static void gpio_setup(void)
{
/* Set GPIO8 (in GPIO port A) to 'output push-pull'. */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO8);
}
int main(void)
{
char tx[10] = "abcdefg\r\n";
int tx_len = 10;
char rx[7] = "bcdefg";
int rx_len = 6;
clock_setup();
gpio_setup();
usart_setup();
transfered = 0;
dma_write(tx, tx_len);
received = 0;
dma_read(rx, rx_len);
/* Blink the LED (PA8) on the board with every transmitted byte. */
while (1) {
gpio_toggle(GPIOA, GPIO8); /* LED on/off */
while ( transfered != 1) {
if (received == 1) {
tx[1] = rx[0];
tx[2] = rx[1];
tx[3] = rx[2];
tx[4] = rx[3];
tx[5] = rx[4];
tx[6] = rx[5];
received = 0;
dma_read(rx, rx_len);
}
}
tx[0]++;
if (tx[0] > 'z') tx[0] = 'a';
transfered = 0;
dma_write(tx, tx_len);
}
return 0;
}

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