RTOS/AM3359: Get time function

Part Number: AM3359
Other Parts Discussed in Thread: SYSBIOS

Tool/software: TI-RTOS

Hello,

i am currently porting the paho mqtt embedded client to sysbios.

https://github.com/eclipse/paho.mqtt.embedded-c

Code in FreeRTOS:

typedef struct Timer 
{
	TickType_t xTicksToWait;
	TimeOut_t xTimeOut;
} Timer;

void TimerCountdownMS(Timer* timer, unsigned int timeout_ms)
{
	timer->xTicksToWait = timeout_ms / portTICK_PERIOD_MS; /* convert milliseconds to ticks */
	vTaskSetTimeOutState(&timer->xTimeOut); /* Record the time at which this function was entered. */
}

void TimerCountdown(Timer* timer, unsigned int timeout)
{
	TimerCountdownMS(timer, timeout * 1000);
}

int TimerLeftMS(Timer* timer)
{
	xTaskCheckForTimeOut(&timer->xTimeOut, &timer->xTicksToWait); /* updates xTicksToWait to the number left */
	return (timer->xTicksToWait < 0) ?
			0 : (timer->xTicksToWait * portTICK_PERIOD_MS);
}

char TimerIsExpired(Timer* timer)
{
	return xTaskCheckForTimeOut(&timer->xTimeOut, &timer->xTicksToWait)
			== pdTRUE;
}

void TimerInit(Timer* timer)
{
	timer->xTicksToWait = 0;
	memset(&timer->xTimeOut, '\0', sizeof(timer->xTimeOut));
}

Code in Linux:

typedef struct Timer
{
	struct timeval end_time;
} Timer;

void TimerInit(Timer* timer)
{
	timer->end_time = (struct timeval){0, 0};
}

char TimerIsExpired(Timer* timer)
{
	struct timeval now, res;
	gettimeofday(&now, NULL);
	timersub(&timer->end_time, &now, &res);
	return res.tv_sec < 0 || (res.tv_sec == 0 && res.tv_usec <= 0);
}


void TimerCountdownMS(Timer* timer, unsigned int timeout)
{
	struct timeval now;
	gettimeofday(&now, NULL);
	struct timeval interval = {timeout / 1000, (timeout % 1000) * 1000};
	timeradd(&now, &interval, &timer->end_time);
}


void TimerCountdown(Timer* timer, unsigned int timeout)
{
	struct timeval now;
	gettimeofday(&now, NULL);
	struct timeval interval = {timeout, 0};
	timeradd(&now, &interval, &timer->end_time);
}


int TimerLeftMS(Timer* timer)
{
	struct timeval now, res;
	gettimeofday(&now, NULL);
	timersub(&timer->end_time, &now, &res);
	//printf("left %d ms\n", (res.tv_sec < 0) ? 0 : res.tv_sec * 1000 + res.tv_usec / 1000);
	return (res.tv_sec < 0) ? 0 : res.tv_sec * 1000 + res.tv_usec / 1000;
}

My Code:

typedef struct Timer
{
	timeval end_time;
} Timer;


void TimerInit(Timer* tim)
{
	tim->end_time.tv_sec = 0;
	tim->end_time.tv_usec = 0;
	timespec time_z;
	time_z.tv_sec = time(NULL);
	clock_settime(CLOCK_REALTIME, &time_z);
	clock_start();
	System_printf("TimerInit: %u \n", time_z.tv_sec);
}

char TimerIsExpired(Timer* tim)
{
	timespec now;
	timeval now_val;
	timeval res;
	clock_gettime(CLOCK_REALTIME, &now);
	TIMESPEC_TO_TIMEVAL(&now_val, &now);
	timsub(&tim->end_time, &now_val, &res);
	System_printf("TimerIsExpired: %u \n", res.tv_sec);
	return res.tv_sec < 0 || (res.tv_sec == 0 && res.tv_usec <= 0);
}

void TimerCountdownMS(Timer* tim, unsigned int timeout)
{
	timespec now;
	timeval now_val;
	clock_gettime(CLOCK_REALTIME, &now);
	TIMESPEC_TO_TIMEVAL(&now_val, &now);
	timeval interval = { timeout / 1000, (timeout % 1000) * 1000 };
	timadd(&now_val, &interval, &tim->end_time);
	System_printf("TimerCountdownMS: %u \n", &tim->end_time);
}

void TimerCountdown(Timer* tim, unsigned int timeout)
{
	timespec now;
	timeval now_val;
	clock_gettime(CLOCK_REALTIME, &now);
	TIMESPEC_TO_TIMEVAL(&now_val, &now);
	timeval interval = { timeout, 0 };
	timadd(&now_val, &interval, &tim->end_time);
	System_printf("TimerCountdown: %u \n", &tim->end_time);
}

int TimerLeftMS(Timer* tim)
{
	timespec now;
	timeval now_val;
	timeval res;
	clock_gettime(CLOCK_REALTIME, &now);
	TIMESPEC_TO_TIMEVAL(&now_val, &now);
	timsub(&tim->end_time, &now_val, &res);
//printf("left %d ms\n", (res.tv_sec < 0) ? 0 : res.tv_sec * 1000 + res.tv_usec / 1000);
	System_printf("TimerLeftMS: %u \n", &tim->end_time);
	return (res.tv_sec < 0) ? 0 : res.tv_sec * 1000 + res.tv_usec / 1000;
}

Is there a simpler equivalent in SYSBIOS?

I can't use gettimeofday because its not in the posix support

I adapted the code with clock_settime because i found this:

http://man7.org/linux/man-pages/man2/gettimeofday.2.html

"POSIX.1-2008 marks gettimeofday() as obsolete,
       recommending the use of clock_gettime(2) instead."

 But it looks like the clock is not counting but i havent found a start function.

I hope this isn't a complex question and got a simple answer.

Thank,

Marvin