120 lines
2.9 KiB
C
120 lines
2.9 KiB
C
/*
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* This file is part of the Black Magic Debug project.
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*
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* Copyright (C) 2013 Gareth McMullin <gareth@blacksphere.co.nz>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <string.h>
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#include <libopencm3/cm3/systick.h>
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#include <libopencm3/stm32/rcc.h>
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#include <libopencm3/stm32/gpio.h>
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#include <libopencm3/cm3/scb.h>
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#include "usbdfu.h"
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#include "platform.h"
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uint32_t app_address = 0x08002000;
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int dfu_activity_counter = 0;
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void dfu_detach(void)
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{
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/* USB device must detach, we just reset... */
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scb_reset_system();
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}
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int main(void)
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{
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/* Check the force bootloader pin*/
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rcc_periph_clock_enable(RCC_GPIOB);
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if(gpio_get(GPIOB, GPIO12))
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dfu_jump_app_if_valid();
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dfu_protect(DFU_MODE);
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rcc_clock_setup_in_hse_8mhz_out_72mhz();
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systick_set_clocksource(STK_CSR_CLKSOURCE_AHB_DIV8);
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systick_set_reload(900000);
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/* Configure USB related clocks and pins. */
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rcc_periph_clock_enable(RCC_GPIOA);
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rcc_periph_clock_enable(RCC_USB);
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gpio_set_mode(GPIOA, GPIO_MODE_INPUT, 0, GPIO8);
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systick_interrupt_enable();
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systick_counter_enable();
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/* Configure the LED pins. */
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gpio_set_mode(LED_PORT, GPIO_MODE_OUTPUT_2_MHZ,
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GPIO_CNF_OUTPUT_PUSHPULL, LED_0 | LED_1 | LED_2);
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dfu_init(&st_usbfs_v1_usb_driver, DFU_MODE);
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/* Configure the USB pull up pin. */
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gpio_set(GPIOA, GPIO8);
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gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
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GPIO_CNF_OUTPUT_PUSHPULL, GPIO8);
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dfu_main();
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}
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void dfu_event(void)
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{
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/* If the counter was at 0 before we should reset LED status. */
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if (dfu_activity_counter == 0) {
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gpio_clear(LED_PORT, LED_0 | LED_1 | LED_2);
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}
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/* Prevent the sys_tick_handler from blinking leds for a bit. */
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dfu_activity_counter = 10;
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/* Toggle the DFU activity LED. */
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gpio_toggle(LED_PORT, LED_1);
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}
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void sys_tick_handler(void)
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{
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static int count = 0;
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static bool reset = true;
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/* Run the LED show only if there is no DFU activity. */
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if (dfu_activity_counter != 0) {
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dfu_activity_counter--;
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reset = true;
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} else {
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if (reset) {
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gpio_clear(LED_PORT, LED_0 | LED_1 | LED_2);
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count = 0;
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reset = false;
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}
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switch (count) {
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case 0:
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gpio_toggle(LED_PORT, LED_2); /* LED2 on/off */
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count++;
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break;
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case 1:
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gpio_toggle(LED_PORT, LED_1); /* LED1 on/off */
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count++;
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break;
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case 2:
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gpio_toggle(LED_PORT, LED_0); /* LED0 on/off */
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count=0;
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break;
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}
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}
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}
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