63 lines
1.6 KiB
C
63 lines
1.6 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) 2015 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 "general.h"
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#include "morse.h"
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#include <libopencm3/cm3/systick.h>
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#include <libopencm3/cm3/nvic.h>
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#include <libopencm3/stm32/rcc.h>
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uint8_t running_status;
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static volatile uint32_t time_ms;
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void platform_timing_init(void)
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{
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/* Setup heartbeat timer */
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systick_set_clocksource(STK_CSR_CLKSOURCE_AHB_DIV8);
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/* Interrupt us at 10 Hz */
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systick_set_reload(rcc_ahb_frequency / (8 * 10) );
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/* SYSTICK_IRQ with low priority */
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nvic_set_priority(NVIC_SYSTICK_IRQ, 14 << 4);
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systick_interrupt_enable();
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systick_counter_enable();
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}
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void platform_delay(uint32_t ms)
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{
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platform_timeout timeout;
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platform_timeout_set(&timeout, ms);
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while (!platform_timeout_is_expired(&timeout));
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}
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void sys_tick_handler(void)
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{
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if(running_status)
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gpio_toggle(LED_PORT, LED_IDLE_RUN);
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time_ms += 100;
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SET_ERROR_STATE(morse_update());
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}
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uint32_t platform_time_ms(void)
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{
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return time_ms;
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}
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