how to use RTC module in CC26xx

You should not access the RTC directly in TI RTOS. TI RTOS has implemented a time function similar to UNIX time api's.

In the TI RTOS config file (appBLE.cfg), add in the module you want to compile add the bottom of the file:

var Seconds = xdc.useModule('ti.sysbios.hal.Seconds');

Then you can simply set and read out Unix Epoch time and use the C standard time functions (overriden by TI RTOS ) directly:

#include <time.h>

#include <ti/sysbios/hal/Seconds.h>

uint32_t sec;

time_t t;

static void someFunction(void)

{

 uint32_t timeNow = 1426692075;

 Seconds_set(timeNow);

 while( (sec = Seconds_get()) != timeNow + 5) {} // <- This actually waits for 5 seconds!

 t   = time(NULL);

}

More info is found in chapter 5.4 of the TI RTOS kernel User Guide: www.ti.com/lit/spruex3

Regards,

Svend