wiring_time.c File Reference

#include "Arduino.h"
#include "cmsis_os.h"

Functions
uint32_t	GetCurrentMicro (void)
uint32_t	millis (void)
uint32_t	micros (void)
static int	is_interrupt (void)
void	delay (uint32_t ms)
void	delayMicroseconds (uint32_t usec)

Function Documentation

GetCurrentMicro()

uint32_t GetCurrentMicro

(

void

)

                               {
    // copy-paste from original arduino_stm32/clock.c
    /* Ensure COUNTFLAG is reset by reading SysTick control and status register */
    /*((SysTick->CTRL & SysTick_CTRL_COUNTFLAG_Msk) == (SysTick_CTRL_COUNTFLAG_Msk));
    uint32_t m = HAL_GetTick();
    uint32_t u = SysTick->LOAD - SysTick->VAL;
    if (((SysTick->CTRL & SysTick_CTRL_COUNTFLAG_Msk) == (SysTick_CTRL_COUNTFLAG_Msk)))
    {
        m = HAL_GetTick();
        u = SysTick->LOAD - SysTick->VAL;
    }
    return (m * 1000 + (u * 1000) / SysTick->LOAD);*/
    // new impl for RTOS with system timer6
    int irq = __get_PRIMASK() & 1;
    if (irq)
        __disable_irq();
    uint32_t u = TIM6->CNT;
    uint32_t m = HAL_GetTick();
    if (irq)
        __enable_irq();
    return (m * 1000 + u);
}

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millis()

uint32_t millis

(

void

)

                      {
    //return osKernelSysTick();
    return HAL_GetTick();
}

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micros()

uint32_t micros

(

void

)

                      {
    return GetCurrentMicro();
}

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is_interrupt()

static int is_interrupt ( void  )

static

                                     {
    return (SCB->ICSR & SCB_ICSR_VECTACTIVE_Msk) != 0;
}

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delay()

void delay

(

uint32_t

ms

)

                        {
    if (!is_interrupt())
        osDelay(ms);
    //HAL_Delay(ms);
}

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delayMicroseconds()

void delayMicroseconds

(

uint32_t

usec

)

                                      {
    if (!is_interrupt()) {
        uint32_t start = GetCurrentMicro();
        while ((start + usec) > GetCurrentMicro())
            ;
    }
}

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