41 lines
825 B
C
41 lines
825 B
C
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#include <systick.h>
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#include <stm32f4xx.h>
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#include <core_cm4.h>
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volatile uint32_t wait_tick_ms;
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volatile uint64_t global_tick_ms;
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void systick_setup(void)
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{
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/* Setup Systick for 1ms tick @ 168 MHz Clock Speed */
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SysTick_Config(SYSTICK_RELOAD);
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}
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/**
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* @brief Wait for x milliseconds
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*
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* This function is not reentrant and must not be called from an interrupt
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*
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* @warning Do not use in interrupt context
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* @param ms wait time in ms
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*/
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void systick_wait_ms(uint32_t ms)
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{
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wait_tick_ms = 0UL;
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while (wait_tick_ms < ms);
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}
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/**
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* @brief Interrupt Handler for SysTick
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*
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* This handler is called every millisecond
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*
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* @warning For calling cyclic functions use separate timers/flags and don't spoil this function
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*/
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void SysTick_Handler()
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{
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/* Increase tick counters */
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wait_tick_ms++;
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global_tick_ms++;
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}
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