Arti Zirk
2de3a91b0a
subrepo: subdir: "libopencm3" merged: "88e91c9a7cce" upstream: origin: "https://github.com/libopencm3/libopencm3.git" branch: "master" commit: "88e91c9a7cce" git-subrepo: version: "0.4.3" origin: "???" commit: "???"
72 lines
2.0 KiB
C
72 lines
2.0 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/>.
|
|
*/
|
|
|
|
#include <libopencm3/cm3/nvic.h>
|
|
#include <libopencm3/stm32/gpio.h>
|
|
#include <libopencm3/stm32/rcc.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_clock_setup_pll(&rcc_hsi_configs[RCC_CLOCK_HSI_48MHZ]);
|
|
/* LED to indicate boot process */
|
|
rcc_periph_clock_enable(RCC_GPIOC);
|
|
gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_2_MHZ,
|
|
GPIO_CNF_OUTPUT_PUSHPULL, GPIO13);
|
|
gpio_set(GPIOC, GPIO13);
|
|
|
|
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_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
|
|
GPIO_CNF_OUTPUT_PUSHPULL, GPIO12);
|
|
gpio_clear(GPIOA, GPIO12);
|
|
for (unsigned int i = 0; i < 800000; i++) {
|
|
__asm__("nop");
|
|
}
|
|
|
|
rcc_periph_clock_enable(RCC_OTGFS);
|
|
|
|
|
|
usbd_device *usbd_dev = gadget0_init(&st_usbfs_v1_usb_driver,
|
|
"stm32f103-generic");
|
|
|
|
ER_DPRINTF("bootup complete\n");
|
|
gpio_clear(GPIOC, GPIO13);
|
|
while (1) {
|
|
gadget0_run(usbd_dev);
|
|
}
|
|
|
|
}
|
|
|