add basic-dataflash-example
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# ----------------------------------------------------------------------------
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# ATMEL Microcontroller Software Support
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# ----------------------------------------------------------------------------
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# Copyright (c) 2008, Atmel Corporation
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#
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# - Redistributions of source code must retain the above copyright notice,
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# this list of conditions and the disclaimer below.
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#
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# Atmel's name may not be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
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# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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# DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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# OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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# EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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# ----------------------------------------------------------------------------
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# Makefile for compiling basic-dataflash-project
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#-------------------------------------------------------------------------------
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# User-modifiable options
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#-------------------------------------------------------------------------------
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# Chip & board used for compilation
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# (can be overriden by adding CHIP=chip and BOARD=board to the command-line)
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CHIP = at91sam7s128
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BOARD = simtrace
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# Trace level used for compilation
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# (can be overriden by adding TRACE_LEVEL=#number to the command-line)
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# TRACE_LEVEL_DEBUG 5
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# TRACE_LEVEL_INFO 4
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# TRACE_LEVEL_WARNING 3
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# TRACE_LEVEL_ERROR 2
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# TRACE_LEVEL_FATAL 1
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# TRACE_LEVEL_NO_TRACE 0
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TRACE_LEVEL = 4
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# Optimization level, put in comment for debugging
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OPTIMIZATION = -Os
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# AT91 library directory
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AT91LIB = ../at91lib
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# Output file basename
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OUTPUT = basic-dataflash-project-$(BOARD)-$(CHIP)
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# Compile for all memories available on the board (this sets $(MEMORIES))
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include $(AT91LIB)/boards/$(BOARD)/board.mak
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# Output directories
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BIN = bin
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OBJ = obj
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#-------------------------------------------------------------------------------
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# Tools
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#-------------------------------------------------------------------------------
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# Tool suffix when cross-compiling
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CROSS_COMPILE = arm-elf-
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# Compilation tools
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CC = $(CROSS_COMPILE)gcc
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SIZE = $(CROSS_COMPILE)size
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STRIP = $(CROSS_COMPILE)strip
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OBJCOPY = $(CROSS_COMPILE)objcopy
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# Flags
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INCLUDES = -I$(AT91LIB)/boards/$(BOARD) -I$(AT91LIB)/peripherals
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INCLUDES += -I$(AT91LIB)/memories -I$(AT91LIB)
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CFLAGS = -Wall -mlong-calls -ffunction-sections
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CFLAGS += -g $(OPTIMIZATION) $(INCLUDES) -D$(CHIP) -DTRACE_LEVEL=$(TRACE_LEVEL)
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ASFLAGS = -g $(OPTIMIZATION) $(INCLUDES) -D$(CHIP) -D__ASSEMBLY__
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LDFLAGS = -g $(OPTIMIZATION) -nostartfiles -Wl,--gc-sections
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#-------------------------------------------------------------------------------
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# Files
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#-------------------------------------------------------------------------------
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# Directories where source files can be found
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PERIPH = $(AT91LIB)/peripherals
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MEM = $(AT91LIB)/memories
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BOARDS = $(AT91LIB)/boards
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UTILITY = $(AT91LIB)/utility
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VPATH += $(MEM)/spi-flash
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VPATH += $(UTILITY)
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VPATH += $(PERIPH)/dbgu $(PERIPH)/pio $(PERIPH)/aic $(PERIPH)/pmc
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VPATH += $(PERIPH)/cp15
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VPATH += $(BOARDS)/$(BOARD) $(BOARDS)/$(BOARD)/$(CHIP)
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# Objects built from C source files
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C_OBJECTS = main.o
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C_OBJECTS += spid.o at45.o
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C_OBJECTS += string.o stdio.o
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C_OBJECTS += dbgu.o pio.o aic.o pmc.o cp15.o
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C_OBJECTS += board_memories.o board_lowlevel.o
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# Objects built from Assembly source files
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ASM_OBJECTS = board_cstartup.o
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#ASM_OBJECTS += cp15_asm_gcc.o
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ASM_OBJECTS += cp15_asm.o
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# Append OBJ and BIN directories to output filename
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OUTPUT := $(BIN)/$(OUTPUT)
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#-------------------------------------------------------------------------------
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# Rules
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#-------------------------------------------------------------------------------
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all: $(BIN) $(OBJ) $(MEMORIES)
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$(BIN) $(OBJ):
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mkdir $@
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define RULES
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C_OBJECTS_$(1) = $(addprefix $(OBJ)/$(1)_, $(C_OBJECTS))
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ASM_OBJECTS_$(1) = $(addprefix $(OBJ)/$(1)_, $(ASM_OBJECTS))
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$(1): $$(ASM_OBJECTS_$(1)) $$(C_OBJECTS_$(1))
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$(CC) $(LDFLAGS) -T"$(AT91LIB)/boards/$(BOARD)/$(CHIP)/$$@.lds" -o $(OUTPUT)-$$@.elf $$^
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$(OBJCOPY) -O binary $(OUTPUT)-$$@.elf $(OUTPUT)-$$@.bin
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$(SIZE) $$^ $(OUTPUT)-$$@.elf
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$$(C_OBJECTS_$(1)): $(OBJ)/$(1)_%.o: %.c Makefile $(OBJ) $(BIN)
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$(CC) $(CFLAGS) -D$(1) -c -o $$@ $$<
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$$(ASM_OBJECTS_$(1)): $(OBJ)/$(1)_%.o: %.S Makefile $(OBJ) $(BIN)
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$(CC) $(ASFLAGS) -D$(1) -c -o $$@ $$<
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debug_$(1): $(1)
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perl ../resources/gdb/debug.pl $(OUTPUT)-$(1).elf
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endef
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$(foreach MEMORY, $(MEMORIES), $(eval $(call RULES,$(MEMORY))))
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clean:
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-rm -f $(OBJ)/*.o $(BIN)/*.bin $(BIN)/*.elf
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@ -0,0 +1,434 @@
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/* ----------------------------------------------------------------------------
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* ATMEL Microcontroller Software Support
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* ----------------------------------------------------------------------------
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* Copyright (c) 2008, Atmel Corporation
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
|
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* modification, are permitted provided that the following conditions are met:
|
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*
|
||||
* - Redistributions of source code must retain the above copyright notice,
|
||||
* this list of conditions and the disclaimer below.
|
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*
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* Atmel's name may not be used to endorse or promote products derived from
|
||||
* this software without specific prior written permission.
|
||||
*
|
||||
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
|
||||
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
|
||||
* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
|
||||
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
||||
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* ----------------------------------------------------------------------------
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*/
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//------------------------------------------------------------------------------
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/// \dir "Basic-dataflash-project"
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///
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/// !!!Purpose
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///
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/// The Basic Dataflash project will help new users get familiar with SPI interface
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/// on Atmel's AT91 family of microcontrollers. This project gives you an AT45
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/// Dataflash programming code so that can help develop your own SPI devices
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/// applications with maximum efficiency.
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///
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/// You can find following information depends on your needs:
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/// - A Spi low level driver performs SPI device Initializes, data transfer and
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/// receive. It can be used by upper SPI driver such as AT45 %dataflash.
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/// - A Dataflash driver is based on top of the corresponding Spi driver.
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/// It allow user to do operations with %dataflash in a unified way.
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///
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/// !See also
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/// - "spi-flash": Dataflash interface driver.
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///
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/// !!!Requirements
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///
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/// This package can be used with all Atmel evaluation kits that have SPI
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/// interface and on-board or external Serialflash connected. The package runs at
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/// SRAM or SDRAM, so SDRAM device is needed if you want to run this package in SDRAM.
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///
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///
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/// !!!Description
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///
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/// The demonstration program tests the dataflash present on the evaluation kit by
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/// erasing and writing each one of its pages.
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///
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/// !!!Usage
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///
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/// -# Build the program and download it inside the evaluation board. Please
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/// refer to the <a href="http://www.atmel.com/dyn/resources/prod_documents/doc6224.pdf">SAM-BA User Guide</a>,
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/// the <a href="http://www.atmel.com/dyn/resources/prod_documents/doc6310.pdf">GNU-Based Software Development</a>
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/// application note or to the <a href="ftp://ftp.iar.se/WWWfiles/arm/Guides/EWARM_UserGuide.ENU.pdf">IAR EWARM User Guide</a>,
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/// depending on your chosen solution.
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/// -# On the computer, open and configure a terminal application
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/// (e.g. HyperTerminal on Microsoft Windows) with these settings:
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/// - 115200 bauds
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/// - 8 bits of data
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/// - No parity
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/// - 1 stop bit
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/// - No flow control
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/// -# Start the application.
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/// -# Upon startup, the application will output the following lines on the DBGU.
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/// \code
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/// -- Basic Dataflash Project xxx --
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/// -- AT91xxxxxx-xx
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/// -- Compiled: xxx xx xxxx xx:xx:xx --
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/// -I- Initializing the SPI and AT45 drivers
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/// -I- At45 enabled
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/// -I- SPI interrupt enabled
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/// -I- Waiting for a dataflash to be connected ...
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/// \endcode
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/// -# As soon as a dataflash is connected, the tests will start. Eventually,
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/// the test result (pass or fail) will be output on the DBGU.
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//------------------------------------------------------------------------------
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//------------------------------------------------------------------------------
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/// \unit
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///
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/// !Purpose
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///
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/// This file contains all the specific code for the basic-dataflash-project.
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/// It tests the dataflash present on the evaluation kit by erasing and writing
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/// each one of its pages
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///
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/// !Contents
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/// The code can be roughly broken down as follows:
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/// - AT45 Dataflash write data function.
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/// - AT45 Dataflash read data function.
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/// - AT45 Dataflash erase function.
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/// - Other AT45 functions (such as AT45_GetStatus())
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/// - The main() function, which implements the program behavior.
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/// - Initializes an AT45 instance and configures SPI chip select pin.
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/// - Config SPI Interrupt Service Routine.
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/// - Identifier the AT45 device connected to the evaluation kit.
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/// - Test the dataflash by erasing and writing each one of its pages.
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///
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/// !See also
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/// - "spi-flash": Dataflash interface driver.
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/// Please refer to the list of functions in the #Overview# tab of this unit
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/// for more detailed information.
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//------------------------------------------------------------------------------
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//------------------------------------------------------------------------------
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// Headers
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//------------------------------------------------------------------------------
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#include <board.h>
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#include <pio/pio.h>
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#include <aic/aic.h>
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#include <utility/assert.h>
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#include <utility/trace.h>
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#include <spi-flash/at45.h>
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#include <string.h>
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//------------------------------------------------------------------------------
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// Local definitions
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//------------------------------------------------------------------------------
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/// SPI clock frequency, in Hz.
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#define SPCK 1000000
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/// If there is no on-board dataflash socket, use SPI0/NPCS0.
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#ifndef BOARD_AT45_A_SPI_PINS
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#ifdef AT91C_BASE_SPI0
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#define BOARD_AT45_A_SPI_BASE AT91C_BASE_SPI0
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#define BOARD_AT45_A_SPI_ID AT91C_ID_SPI0
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#define BOARD_AT45_A_SPI_PINS PINS_SPI0
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#define BOARD_AT45_A_NPCS_PIN PIN_SPI0_NPCS0
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#else
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#define BOARD_AT45_A_SPI_BASE AT91C_BASE_SPI
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#define BOARD_AT45_A_SPI_ID AT91C_ID_SPI
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#define BOARD_AT45_A_SPI_PINS PINS_SPI
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#define BOARD_AT45_A_NPCS_PIN PIN_SPI_NPCS0
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#endif
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#define BOARD_AT45_A_SPI 0
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#define BOARD_AT45_A_NPCS 0
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#endif
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//------------------------------------------------------------------------------
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// Internal variables
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//------------------------------------------------------------------------------
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/// SPI driver instance.
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static Spid spid;
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/// AT45 driver instance.
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static At45 at45;
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/// Pins used by the application.
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static const Pin pins[] = {BOARD_AT45_A_SPI_PINS, BOARD_AT45_A_NPCS_PIN};
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/// Page buffer.
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static unsigned char pBuffer[2112];
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//------------------------------------------------------------------------------
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// Internal functions
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//------------------------------------------------------------------------------
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//------------------------------------------------------------------------------
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/// SPI interrupt handler. Invokes the SPI driver handler to check for pending
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/// interrupts.
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//------------------------------------------------------------------------------
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static void ISR_Spi(void)
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{
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SPID_Handler(&spid);
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}
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//------------------------------------------------------------------------------
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/// Retrieves and returns the At45 current status, or 0 if an error
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/// happened.
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/// \param pAt45 Pointer to a At45 driver instance.
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//------------------------------------------------------------------------------
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static unsigned char AT45_GetStatus(At45 *pAt45)
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{
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unsigned char error;
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unsigned char status;
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// Sanity checks
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ASSERT(pAt45, "-F- AT45_GetStatus: pAt45 is null\n\r");
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// Issue a status register read command
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error = AT45_SendCommand(pAt45, AT45_STATUS_READ, 1, &status, 1, 0, 0, 0);
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ASSERT(!error, "-F- AT45_GetStatus: Failed to issue command.\n\r");
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// Wait for command to terminate
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while (AT45_IsBusy(pAt45));
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return status;
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}
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//------------------------------------------------------------------------------
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/// Waits for the At45 to be ready to accept new commands.
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/// \param pAt45 Pointer to a At45 driver instance.
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//------------------------------------------------------------------------------
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static void AT45_WaitReady(At45 *pAt45)
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{
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unsigned char ready = 0;
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// Sanity checks
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ASSERT(pAt45, "-F- AT45_WaitUntilReady: pAt45 is null\n\r");
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// Poll device until it is ready
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while (!ready) {
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ready = AT45_STATUS_READY(AT45_GetStatus(pAt45));
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}
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}
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//------------------------------------------------------------------------------
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/// Reads and returns the JEDEC identifier of a At45.
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/// \param pAt45 Pointer to a At45 driver instance.
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//------------------------------------------------------------------------------
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static unsigned int AT45_GetJedecId(At45 *pAt45)
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{
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unsigned char error;
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unsigned int id;
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// Sanity checks
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ASSERT(pAt45, "-F- AT45_GetJedecId: pAt45 is null\n\r");
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// Issue a manufacturer and device ID read command
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error = AT45_SendCommand(pAt45, AT45_ID_READ, 1, (void *) &id, 4, 0, 0, 0);
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ASSERT(!error, "-F- AT45_GetJedecId: Could not issue command.\n\r");
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// Wait for transfer to finish
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while (AT45_IsBusy(pAt45));
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return id;
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}
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//------------------------------------------------------------------------------
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/// Reads data from the At45 inside the provided buffer. Since a continuous
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/// read command is used, there is no restriction on the buffer size and read
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/// address.
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/// \param pAt45 Pointer to a At45 driver instance.
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/// \param pBuffer Data buffer.
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/// \param size Number of bytes to read.
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/// \param address Address at which data shall be read.
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//------------------------------------------------------------------------------
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static void AT45_Read(
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At45 *pAt45,
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unsigned char *pBuffer,
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unsigned int size,
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unsigned int address)
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{
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unsigned char error;
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// Sanity checks
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ASSERT(pAt45, "-F- AT45_Read: pAt45 is null\n\r");
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ASSERT(pBuffer, "-F- AT45_Read: pBuffer is null\n\r");
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// Issue a continuous read array command
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error = AT45_SendCommand(pAt45, AT45_CONTINUOUS_READ_LEG, 8, pBuffer, size, address, 0, 0);
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ASSERT(!error, "-F- AT45_Read: Failed to issue command\n\r");
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// Wait for the read command to execute
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while (AT45_IsBusy(pAt45));
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}
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//------------------------------------------------------------------------------
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/// Writes data on the At45 at the specified address. Only one page of
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/// data is written that way; if the address is not at the beginning of the
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/// page, the data is written starting from this address and wraps around to
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/// the beginning of the page.
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/// \param pAt45 Pointer to a At45 driver instance.
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/// \param pBuffer Buffer containing the data to write.
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/// \param size Number of bytes to write.
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/// \param address Destination address on the At45.
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//------------------------------------------------------------------------------
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static void AT45_Write(
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At45 *pAt45,
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unsigned char *pBuffer,
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unsigned int size,
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unsigned int address)
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{
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unsigned char error;
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// Sanity checks
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ASSERT(pAt45, "-F- AT45_Write: pAt45 is null.\n\r");
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ASSERT(pBuffer, "-F- AT45_Write: pBuffer is null.\n\r");
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ASSERT(size <= pAt45->pDesc->pageSize, "-F- AT45_Write: Size too big\n\r");
|
||||
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// Issue a page write through buffer 1 command
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||||
error = AT45_SendCommand(pAt45, AT45_PAGE_WRITE_BUF1, 4, pBuffer, size, address, 0, 0);
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||||
ASSERT(!error, "-F- AT45_Write: Could not issue command.\n\r");
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||||
// Wait until the command is sent
|
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while (AT45_IsBusy(pAt45));
|
||||
|
||||
// Wait until the At45 becomes ready again
|
||||
AT45_WaitReady(pAt45);
|
||||
}
|
||||
|
||||
//------------------------------------------------------------------------------
|
||||
/// Erases a page of data at the given address in the At45.
|
||||
/// \param pAt45 Pointer to a At45 driver instance.
|
||||
/// \param address Address of page to erase.
|
||||
//------------------------------------------------------------------------------
|
||||
static void AT45_Erase(At45 *pAt45, unsigned int address)
|
||||
{
|
||||
unsigned char error;
|
||||
|
||||
// Sanity checks
|
||||
ASSERT(pAt45, "-F- AT45_Erase: pAt45 is null\n\r");
|
||||
|
||||
// Issue a page erase command.
|
||||
error = AT45_SendCommand(pAt45, AT45_PAGE_ERASE, 4, 0, 0, address, 0, 0);
|
||||
ASSERT(!error, "-F- AT45_Erase: Could not issue command.\n\r");
|
||||
|
||||
// Wait for end of transfer
|
||||
while (AT45_IsBusy(pAt45));
|
||||
|
||||
// Poll until the At45 has completed the erase operation
|
||||
AT45_WaitReady(pAt45);
|
||||
}
|
||||
|
||||
//------------------------------------------------------------------------------
|
||||
// Exported functions
|
||||
//------------------------------------------------------------------------------
|
||||
|
||||
//------------------------------------------------------------------------------
|
||||
/// Tests the At45 connected to the board by performing several command
|
||||
/// on each of its pages.
|
||||
//------------------------------------------------------------------------------
|
||||
int main()
|
||||
{
|
||||
unsigned int i;
|
||||
unsigned int page;
|
||||
unsigned char testFailed;
|
||||
const At45Desc *pDesc;
|
||||
|
||||
// Configure pins
|
||||
PIO_Configure(pins, PIO_LISTSIZE(pins));
|
||||
|
||||
// Configure traces
|
||||
TRACE_CONFIGURE(DBGU_STANDARD, 115200, BOARD_MCK);
|
||||
printf("-- Basic Dataflash Project %s --\n\r", SOFTPACK_VERSION);
|
||||
printf("-- %s\n\r", BOARD_NAME);
|
||||
printf("-- Compiled: %s %s --\n\r", __DATE__, __TIME__);
|
||||
|
||||
// SPI and At45 driver initialization
|
||||
TRACE_INFO("Initializing the SPI and AT45 drivers\n\r");
|
||||
AIC_ConfigureIT(BOARD_AT45_A_SPI_ID, 0, ISR_Spi);
|
||||
SPID_Configure(&spid, BOARD_AT45_A_SPI_BASE, BOARD_AT45_A_SPI_ID);
|
||||
SPID_ConfigureCS(&spid, BOARD_AT45_A_NPCS, AT45_CSR(BOARD_MCK, SPCK));
|
||||
AT45_Configure(&at45, &spid, BOARD_AT45_A_NPCS);
|
||||
TRACE_INFO("At45 enabled\n\r");
|
||||
AIC_EnableIT(BOARD_AT45_A_SPI_ID);
|
||||
TRACE_INFO("SPI interrupt enabled\n\r");
|
||||
|
||||
// Identify the At45 device
|
||||
TRACE_INFO("Waiting for a dataflash to be connected ...\n\r");
|
||||
pDesc = 0;
|
||||
while (!pDesc) {
|
||||
|
||||
pDesc = AT45_FindDevice(&at45, AT45_GetStatus(&at45));
|
||||
}
|
||||
TRACE_INFO("%s detected\n\r", at45.pDesc->name);
|
||||
|
||||
// Output JEDEC identifier of device
|
||||
TRACE_INFO("Device identifier: 0x%08X\n\r", AT45_GetJedecId(&at45));
|
||||
|
||||
// Test all pages
|
||||
testFailed = 0;
|
||||
page = 0;
|
||||
while (!testFailed && (page < AT45_PageNumber(&at45))) {
|
||||
|
||||
TRACE_INFO("Test in progress on page: %6u\r", page);
|
||||
|
||||
// Erase page
|
||||
AT45_Erase(&at45, page * AT45_PageSize(&at45));
|
||||
|
||||
// Verify that page has been erased correctly
|
||||
memset(pBuffer, 0, AT45_PageSize(&at45));
|
||||
AT45_Read(&at45, pBuffer, AT45_PageSize(&at45), page * AT45_PageSize(&at45));
|
||||
for (i=0; i < AT45_PageSize(&at45); i++) {
|
||||
|
||||
if (pBuffer[i] != 0xff) {
|
||||
|
||||
TRACE_ERROR("Could not erase page %u\n\r", page);
|
||||
testFailed = 1;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
// Write page
|
||||
for (i=0; i < AT45_PageSize(&at45); i++) {
|
||||
|
||||
pBuffer[i] = i & 0xFF;
|
||||
}
|
||||
AT45_Write(&at45, pBuffer, AT45_PageSize(&at45), page * AT45_PageSize(&at45));
|
||||
|
||||
// Check that data has been written correctly
|
||||
memset(pBuffer, 0, AT45_PageSize(&at45));
|
||||
AT45_Read(&at45, pBuffer, AT45_PageSize(&at45), page * AT45_PageSize(&at45));
|
||||
for (i=0; i < AT45_PageSize(&at45); i++) {
|
||||
|
||||
if (pBuffer[i] != (i & 0xFF)) {
|
||||
|
||||
TRACE_ERROR("Could not write page %u\n\r", page);
|
||||
testFailed = 1;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
page++;
|
||||
}
|
||||
|
||||
// Display test result
|
||||
if (testFailed) {
|
||||
|
||||
TRACE_ERROR("Test failed.\n\r");
|
||||
}
|
||||
else {
|
||||
|
||||
TRACE_INFO("Test passed.\n\r");
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
Loading…
Reference in New Issue