reflow-oven-control-sw/stm-firmware/systick.c

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/* Reflow Oven Controller
*
* Copyright (C) 2020 Mario Hüttel <mario.huettel@gmx.net>
*
* This file is part of the Reflow Oven Controller Project.
*
* The reflow oven controller is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* The Reflow Oven Control Firmware is distributed in the hope that it will be useful,
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* 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 the reflow oven controller project.
* If not, see <http://www.gnu.org/licenses/>.
*/
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/**
* @file systick.c
*/
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#include <reflow-controller/systick.h>
#include <stm32/stm32f4xx.h>
#include <cmsis/core_cm4.h>
volatile uint32_t wait_tick_ms;
volatile uint64_t global_tick_ms;
void systick_setup(void)
{
/* Setup Systick for 1ms tick @ 168 MHz Clock Speed */
SysTick_Config(SYSTICK_RELOAD);
}
void systick_wait_ms(uint32_t ms)
{
wait_tick_ms = 0UL;
while (wait_tick_ms < ms);
}
/**
* @brief Interrupt Handler for SysTick
*
* This handler is called every millisecond
*
* @warning For calling cyclic functions use separate timers/flags and don't spoil this function
*/
void SysTick_Handler()
{
/* Increase tick counters */
wait_tick_ms++;
global_tick_ms++;
}