103 lines
2.4 KiB
C
103 lines
2.4 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 "general.h"
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#include "platform.h"
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static uint32_t rev;
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static uint16_t led_bootloader;
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static uint16_t pin_nrst;
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static uint32_t led2_state = 0;
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uint32_t app_address = 0x08002000;
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static bool stlink_test_nrst(void)
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{
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uint16_t nrst;
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gpio_set_mode(GPIOB, GPIO_MODE_INPUT,
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GPIO_CNF_INPUT_PULL_UPDOWN, pin_nrst);
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gpio_set(GPIOB, pin_nrst);
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for (int i = 0; i < 10000; i++)
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nrst = gpio_get(GPIOB, pin_nrst);
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return (nrst) ? true : false;
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}
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void dfu_detach(void)
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{
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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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rev = detect_rev();
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if (rev == 0) {
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led_bootloader = GPIO8;
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pin_nrst = GPIO1;
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} else {
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led_bootloader = GPIO9;
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pin_nrst = GPIO0;
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}
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if(((GPIOA_CRL & 0x40) == 0x40) && stlink_test_nrst())
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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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systick_interrupt_enable();
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systick_counter_enable();
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if (rev > 1)
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gpio_set(GPIOA, GPIO15);
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dfu_init(&st_usbfs_v1_usb_driver, DFU_MODE);
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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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}
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void sys_tick_handler(void)
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{
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if (rev == 0) {
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gpio_toggle(GPIOA, led_bootloader);
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} else {
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if (led2_state & 1) {
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gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
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GPIO_CNF_OUTPUT_PUSHPULL, led_bootloader);
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gpio_clear(GPIOA, led_bootloader);
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} else {
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gpio_set_mode(GPIOA, GPIO_MODE_INPUT,
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GPIO_CNF_INPUT_ANALOG, led_bootloader);
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}
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led2_state++;
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}
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}
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