From dc64929b78e5e0ba3be31577a0804f95c92b52cd Mon Sep 17 00:00:00 2001 From: Karl Palsson Date: Sun, 29 Apr 2018 19:20:43 +0000 Subject: [PATCH] tests: gadget0: add stm32f3-disco Another readily available board with a user USB port, and this one lets you test the st usbfs peripheral on a device with trace facilities. --- tests/gadget-zero/Makefile.stm32f3-disco | 44 ++++++++++ tests/gadget-zero/main-stm32f3-disco.c | 93 +++++++++++++++++++++ tests/gadget-zero/openocd.stm32f3-disco.cfg | 13 +++ 3 files changed, 150 insertions(+) create mode 100644 tests/gadget-zero/Makefile.stm32f3-disco create mode 100644 tests/gadget-zero/main-stm32f3-disco.c create mode 100644 tests/gadget-zero/openocd.stm32f3-disco.cfg diff --git a/tests/gadget-zero/Makefile.stm32f3-disco b/tests/gadget-zero/Makefile.stm32f3-disco new file mode 100644 index 00000000..3a60392e --- /dev/null +++ b/tests/gadget-zero/Makefile.stm32f3-disco @@ -0,0 +1,44 @@ +## +## This file is part of the libopencm3 project. +## +## 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 . +## + +BOARD = stm32f3-disco +PROJECT = usb-gadget0-$(BOARD) +BUILD_DIR = bin-$(BOARD) + +SHARED_DIR = ../shared + +CFILES = main-$(BOARD).c +CFILES += usb-gadget0.c trace.c trace_stdio.c +CFILES += delay.c + +VPATH += $(SHARED_DIR) + +INCLUDES += $(patsubst %,-I%, . $(SHARED_DIR)) + +OPENCM3_DIR=../.. + +### This section can go to an arch shared rules eventually... +LDSCRIPT = ../../lib/stm32/f3/stm32f303xc.ld +OPENCM3_LIB = opencm3_stm32f3 +OPENCM3_DEFS = -DSTM32F3 +FP_FLAGS ?= -mfloat-abi=hard -mfpu=fpv4-sp-d16 +ARCH_FLAGS = -mthumb -mcpu=cortex-m4 $(FP_FLAGS) +#OOCD_INTERFACE = stlink-v2 +#OOCD_TARGET = stm32f3x +OOCD_FILE = openocd.stm32f3-disco.cfg + +include ../rules.mk diff --git a/tests/gadget-zero/main-stm32f3-disco.c b/tests/gadget-zero/main-stm32f3-disco.c new file mode 100644 index 00000000..53970b9f --- /dev/null +++ b/tests/gadget-zero/main-stm32f3-disco.c @@ -0,0 +1,93 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2015 Karl Palsson + * + * 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 . + */ + +/* "generic" could be any L1 board, but this file is pre-configured for the + * libopencm3-tests "hw1" board, with an stm32l151c8-A part. + */ + +#include +#include +#include +#include +#include + +#include +#include "usb-gadget0.h" + +#define ER_DEBUG +#ifdef ER_DEBUG +#define ER_DPRINTF(fmt, ...) \ + do { printf(fmt, ## __VA_ARGS__); } while (0) +#else +#define ER_DPRINTF(fmt, ...) \ + do { } while (0) +#endif + +const struct rcc_clock_scale this_clock_config = { + /* 72MHZ from 8MHZ external clock from stlink MCO */ + .pllsrc = RCC_CFGR_PLLSRC_HSE_PREDIV, + .pllmul = RCC_CFGR_PLLMUL_MUL9, + .plldiv = RCC_CFGR2_PREDIV_NODIV, + .usbdiv1 = false, + .flash_waitstates = 2, + .hpre = RCC_CFGR_HPRE_DIV_NONE, + .ppre1 = RCC_CFGR_PPRE1_DIV_2, + .ppre2 = RCC_CFGR_PPRE2_DIV_NONE, + .ahb_frequency = 72e6, + .apb1_frequency = 32e6, + .apb2_frequency = 72e6, +}; + + +int main(void) +{ + rcc_periph_clock_enable(RCC_GPIOE); + gpio_mode_setup(GPIOE, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO11|GPIO12); + gpio_set(GPIOE, GPIO12); + rcc_clock_setup_pll(&this_clock_config); + + rcc_periph_clock_enable(RCC_GPIOA); + /* + * Vile hack to reenumerate, physically _drag_ d+ low. + * do NOT do this if you're board has proper usb pull up control! + * (need at least 2.5us to trigger usb disconnect) + */ + gpio_mode_setup(GPIOA, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO12); + gpio_clear(GPIOA, GPIO12); + for (unsigned int i = 0; i < 800000; i++) { + __asm__("nop"); + } + /* now return PA11/PA12 to usb AF */ + gpio_mode_setup(GPIOA, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO11|GPIO12); + gpio_set_af(GPIOA, GPIO_AF14, GPIO11|GPIO12); + + usbd_device *usbd_dev = gadget0_init(&st_usbfs_v1_usb_driver, + "stm32f3-disco"); + + ER_DPRINTF("bootup complete\n"); + gpio_clear(GPIOE, GPIO12); + static int i = 0; + while (1) { + gpio_toggle(GPIOE, GPIO12); + gadget0_run(usbd_dev); + ER_DPRINTF("loop %d\n", i++); + } + +} + diff --git a/tests/gadget-zero/openocd.stm32f3-disco.cfg b/tests/gadget-zero/openocd.stm32f3-disco.cfg new file mode 100644 index 00000000..835d4669 --- /dev/null +++ b/tests/gadget-zero/openocd.stm32f3-disco.cfg @@ -0,0 +1,13 @@ +source [find interface/stlink-v2.cfg] +set WORKAREASIZE 0x4000 +source [find target/stm32f3x.cfg] + +# serial of my f3 disco board. +hla_serial "S?n\x06gePQ6G%g" + +tpiu config internal swodump.stm32f3-disco.log uart off 72000000 + +# Uncomment to reset on connect, for grabbing under WFI et al +reset_config srst_only srst_nogate +# reset_config srst_only srst_nogate connect_assert_srst +