sys_time_arch.c File Reference

STM32 timing functions. More...

#include "mcu_periph/sys_time.h"
#include "mcu_periph/sys_time_arch.h"
#include "libopencm3/cm3/systick.h"

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Macros
#define	USE_OCM3_SYSTICK_INIT   1

Functions
void	sys_tick_handler (void)
void	sys_time_arch_init (void)
	Initialize SysTick.
void	sys_time_usleep (uint32_t us)
	Busy wait in microseconds.
void	sys_time_msleep (uint32_t ms)
	Sleep.

Detailed Description

STM32 timing functions.

Definition in file sys_time_arch.c.

Macro Definition Documentation

USE_OCM3_SYSTICK_INIT

#define USE_OCM3_SYSTICK_INIT   1

Definition at line 40 of file sys_time_arch.c.

Function Documentation

sys_tick_handler()

void sys_tick_handler

(

void

)

Definition at line 76 of file sys_time_arch.c.

References sys_time_timer::cb, sys_time::cpu_ticks_per_sec, sys_time_timer::duration, sys_time_timer::elapsed, sys_time_timer::end_time, foo, sys_time_timer::in_use, LED_TOGGLE, sys_time::nb_sec, sys_time::nb_sec_rem, sys_time::nb_tick, sys_time::resolution_cpu_ticks, SYS_TIME_NB_TIMER, and sys_time::timer.

sys_time_arch_init()

void sys_time_arch_init

(

void

)

Initialize SysTick.

Generate SysTick interrupt every sys_time.resolution_cpu_ticks

Definition at line 48 of file sys_time_arch.c.

References AHB_CLK, sys_time::cpu_ticks_per_sec, foo, sys_time::resolution, and sys_time::resolution_cpu_ticks.

sys_time_msleep()

void sys_time_msleep

(

uint32_t

ms

)

Sleep.

Parameters

ms	milliseconds

Definition at line 134 of file sys_time_arch.c.

References foo, and sys_time_usleep().

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sys_time_usleep()

void sys_time_usleep

(

uint32_t

us

)

Busy wait in microseconds.

Sleep.

max value is limited by the max number of cycle i.e 2^32 * usec_of_cpu_ticks(systick_get_reload())

Definition at line 106 of file sys_time_arch.c.

References cpu_ticks_of_usec(), foo, and usec_of_cpu_ticks().

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