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Factor out timing routines common to all STM32 targets.
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@@ -20,6 +20,7 @@ SRC += cdcacm.c \ | |
traceswo.c \ | ||
usbuart.c \ | ||
serialno.c \ | ||
timing.c \ | ||
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all: blackmagic.bin | ||
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/* | ||
* This file is part of the Black Magic Debug project. | ||
* | ||
* Copyright (C) 2015 Gareth McMullin <gareth@blacksphere.co.nz> | ||
* | ||
* 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 <http://www.gnu.org/licenses/>. | ||
*/ | ||
#include "general.h" | ||
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#include <libopencm3/cm3/systick.h> | ||
#include <libopencm3/cm3/scb.h> | ||
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uint8_t running_status; | ||
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static volatile uint32_t timeout_counter; | ||
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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(); | ||
} | ||
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void platform_timeout_set(uint32_t ms) | ||
{ | ||
timeout_counter = ms / 100; | ||
} | ||
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bool platform_timeout_is_expired(void) | ||
{ | ||
return timeout_counter == 0; | ||
} | ||
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void platform_delay(uint32_t delay) | ||
{ | ||
platform_timeout_set(delay); | ||
while (platform_timeout_is_expired()); | ||
} | ||
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void sys_tick_handler(void) | ||
{ | ||
if(running_status) | ||
gpio_toggle(LED_PORT, LED_IDLE_RUN); | ||
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if(timeout_counter) | ||
timeout_counter--; | ||
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SET_ERROR_STATE(morse_update()); | ||
} | ||
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/* | ||
* This file is part of the Black Magic Debug project. | ||
* | ||
* Copyright (C) 2015 Gareth McMullin <gareth@blacksphere.co.nz> | ||
* | ||
* 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 <http://www.gnu.org/licenses/>. | ||
*/ | ||
#ifndef __TIMING_H | ||
#define __TIMING_H | ||
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extern uint8_t running_status; | ||
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void platform_timing_init(void); | ||
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#endif | ||
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