76 lines
2.2 KiB
C
76 lines
2.2 KiB
C
|
/*
|
||
|
|
* This file is part of the libopencm3 project.
|
||
|
|
*
|
||
|
|
* Copyright (C) 2015 Karl Palsson <karlp@tweak.net.au>
|
||
|
|
*
|
||
|
|
* 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/>.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* "generic" could be any L1 board, but this file is pre-configured for the
|
||
|
|
* libopencm3-tests "hw1" board, with an stm32l151c8-A part.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <libopencm3/cm3/nvic.h>
|
||
|
|
#include <libopencm3/stm32/gpio.h>
|
||
|
|
#include <libopencm3/stm32/flash.h>
|
||
|
|
#include <libopencm3/stm32/rcc.h>
|
||
|
|
#include <libopencm3/stm32/syscfg.h>
|
||
|
|
|
||
|
|
#include <stdio.h>
|
||
|
|
#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
|
||
|
|
|
||
|
|
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(&rcc_hse8mhz_configs[RCC_CLOCK_HSE8_72MHZ]);
|
||
|
|
|
||
|
|
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) {
|
||
|
|
gadget0_run(usbd_dev);
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|