/* * This file is part of the Black Magic Debug project. * * Copyright (C) 2015 Gareth McMullin * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ #include "general.h" #include "morse.h" #include #include uint8_t running_status; static volatile uint32_t timeout_counter; void platform_timing_init(void) { /* Setup heartbeat timer */ systick_set_clocksource(STK_CSR_CLKSOURCE_AHB_DIV8); systick_set_reload(900000); /* Interrupt us at 10 Hz */ SCB_SHPR(11) &= ~((15 << 4) & 0xff); SCB_SHPR(11) |= ((14 << 4) & 0xff); systick_interrupt_enable(); systick_counter_enable(); } void platform_timeout_set(uint32_t ms) { timeout_counter = ms / 100; } bool platform_timeout_is_expired(void) { return timeout_counter == 0; } void platform_delay(uint32_t delay) { platform_timeout_set(delay); while (platform_timeout_is_expired()); } void sys_tick_handler(void) { if(running_status) gpio_toggle(LED_PORT, LED_IDLE_RUN); if(timeout_counter) timeout_counter--; SET_ERROR_STATE(morse_update()); }