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CC3200: use of mktime in CC3200

Ganesh Gurung58
Intellectual 725 points
Part Number: CC3200

Hi there, 

Do you have any example using mktime function working. I tried calling the mktime from time.h but it is not working.

#define DAY     6
#define MONTH   1
#define YEAR    2016
#define HOUR    19
#define MINUTE  0
#define SECOND  0

#define YEARDIFF  1900
#define MONTHDIFF 1

#include <time.h>
#include <stdint.h>
static void setTime(void)
{
    struct tm startTime = {0};
    time_t ts;

    /* Set system clock on application microcontroller */
    startTime.tm_mday = DAY;
    startTime.tm_mon  = MONTH - MONTHDIFF;
    startTime.tm_year = YEAR - YEARDIFF;
    startTime.tm_hour = HOUR;
    startTime.tm_min  = MINUTE;
    startTime.tm_sec  = SECOND;
    startTime.tm_isdst = -1;
    ts = mktime(&startTime);
    UART_PRINT("seconds since the Epoch: %ld\n", (long) ts);
}

Thanks
Ganesh

  • 0
    TI__Mastermind 38980 points

    Hi Ganesh,

    Are you trying to set the RTOS clock on the host MCU, or are you trying to set the NWP clock for networking uses?

    Best regards,

    Sarah

  • 0 in reply to Sarah P
    Intellectual 725 points

    Hi Sarah,

    I am not trying to set in RTOS clock or in NWP clock

    #define YEARDIFF 1900
#define MONTHDIFF 1

static uint32_t setTime(uint16_t year, uint8_t month, uint8_t day, uint8_t h, uint8_t m, uint8_t s)
{
	struct tm startTime = { 0 };
	time_t ts;

	/* Set system clock on application microcontroller */
	startTime.tm_mday = day;
	startTime.tm_mon = month - MONTHDIFF;
	startTime.tm_year = year - YEARDIFF;
	startTime.tm_hour = h;
	startTime.tm_min = m;
	startTime.tm_sec = s;
	startTime.tm_isdst = 0;
	ts = mktime(&startTime);
	//UART_PRINT("seconds since the Epoch: %ld\n", (long)ts);
	return (uint32_t)ts;
}

    After using mktime i was trying get the correct timestamp, thats all. But it return me incorrect data.

  • 0 in reply to Ganesh Gurung58
    TI__Mastermind 38980 points

    Hi Ganesh,

    Can you explain your result and what you expect instead?

    I believe the TI-RTOS Epoch is based on 1970, and you should use an unsigned long to print.

    Best regards,

    Sarah

  • 0 in reply to Sarah P
    Intellectual 725 points

    Hi Sarah,

    Thanks works.

    Ganesh