CC2651R3SIPA: How to create RTC callback function

robin Moon

Expert 1520 points

Part Number: CC2651R3SIPA

Tool/software:

Hi expert,

I would like to create a wake-up function every 10 minutes using rtc.

i made it as below by referring to several e2e forums, but it seems that rtc callback is not called.

could you point out the error?

void AON_RTChandling_createTask(void)
{
setupRTC();
}

void setupRTC(void) {

AONRTCDisable();
AONRTCReset();
AONRTCEventClear(AON_RTC_CH0);

AONRTCCompareValueSet(AON_RTC_CH0, AONRTCCurrent64BitValueGet() + RTC_INTERVAL_TICKS);
IntPendClear(INT_AON_RTC_COMB);
AONRTCChannelEnable(AON_RTC_CH0);
AONRTCEnable();
AONRTCCombinedEventConfig(AON_RTC_CH0 | AON_RTC_CH1 | AON_RTC_CH2);

//AONEventMcuWakeUpSet(AON_EVENT_MCU_WU0, AON_EVENT_RTC_CH1);

HwiP_Params hwiParams;
HwiP_Params_init(&hwiParams);
hwiParams.priority = 1;
HwiP_create(INT_AON_RTC_COMB, rtcCallback, &hwiParams);

HwiP_enableInterrupt(INT_AON_RTC_COMB);

GPIO_setConfig(CONFIG_TEST_LED, GPIO_CFG_OUT_STD | GPIO_CFG_OUT_HIGH);

}

void rtcCallback(uintptr_t arg) {
dispHandle = Display_open(Display_Type_ANY, NULL);
Display_printf(dispHandle, 0, 0, " rtcCallback ");

AONRTCEventClear(AON_RTC_CH0);

GPIO_toggle(CONFIG_TEST_LED);

uint32_t nextTick = AONRTCCurrentCompareValueGet() + RTC_INTERVAL_TICKS;
AONRTCCompareValueSet(AON_RTC_CH1, nextTick);

HwiP_clearInterrupt(INT_AON_RTC_COMB);
}

thanks

B.R

7 months ago

0 Alex Fager 7 months ago

TI__Genius 13194 points

Hello Moon,

I hope you are doing well, I will try to look into your issue further, and recrate something on my side.

Thanks,
Alex F

0 Alex Fager 7 months ago in reply to Alex Fager

TI__Genius 13194 points

Hello Moon,

I wanted to ask if we could use the Timer peripheral here to help, found in TimerPCC26XX_nortos.c? With that being said this timer function does very similar steps to your implementation.

/* Add current time to compare-value, in case it is not 0 */

compare += AONRTCCurrentCompareValueGet();

/* Clear events on channel 0 */

AONRTCEventClear(AON_RTC_CH0);

/* set the compare value at the RTC */

AONRTCCompareValueSet(AON_RTC_CH0, compare);

/* enable compare channel 0 */

AONEventMcuWakeUpSet(AON_EVENT_MCU_WU0, AON_EVENT_RTC0);

AONRTCChannelEnable(AON_RTC_CH0);

Thanks,
Alex F

0 robin Moon 7 months ago in reply to Alex Fager

Expert 1520 points

Hi Alex.

thanks for reply.

I can't see the Callback function for the RTC event on your source you sent me.

please tell me how to implement even callback or interrupt handler.

we have to wake up with RTC and then perform certain actions.

thanks

B.R

0 Alex Fager 7 months ago in reply to robin Moon

TI__Genius 13194 points

Hello B.R

We should be able to use the timer function here and have a global increment every second. Something like:

Timer_Handle    handle;
Timer_Params    params;
Timer_Params_init(&params);
params.periodUnits = Timer_PERIOD_HZ;
params.period = 1;
params.timerMode  = Timer_CONTINUOUS_CALLBACK;
params.timerCallback = UserCallbackFunction;
handle = Timer_open(CONFIG_TIMER0, &params);
if (handle == NULL) {
    // Timer_open() failed
    while (1);
}
status = Timer_start(handle);
if (status == Timer_STATUS_ERROR) {
    //Timer_start() failed
    while (1);
}
sleep(10000);
Timer_stop(handle);

Thanks,
Alex F

0 robin Moon 7 months ago in reply to Alex Fager

Expert 1520 points

Hi Alex

the callback fuction you sent me is a setting for general TImer.

please let me know how to set up RTC Callback and RTC configuration.

thanks

0 Alex Fager 7 months ago in reply to robin Moon

TI__Genius 13194 points

Hello Robin,

I found the following thread which discusses a similar topic (RTC wakeup), this should be useful in setting up your version:

https://e2e.ti.com/f/1/t/884941/

Thanks,
Alex F

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CC2651R3SIPA: How to create RTC callback function