Setting up the app_timer with Keil and NRF52810

RE: Setting up the app_timer with Keil and NRF52810

Vidar Berg — Mon, 28 Oct 2019 09:51:53 GMT

You don't need to access the driver RTC APIs, the app timer library does that. Try to remove the RTC driver initialization and manually start the 32K clock at the beginning of main()

int main()
{
    NRF_CLOCK->TASKS_LFCLKSTART = 1;
    while (NRF_CLOCK->EVENTS_LFCLKSTARTED == 0);
    
    ...

RE: Setting up the app_timer with Keil and NRF52810

trevortjes — Mon, 28 Oct 2019 09:39:41 GMT

Also I added the checks and both app_timer_create and app_timer_start return NRF_SUCCESS

RE: Setting up the app_timer with Keil and NRF52810

trevortjes — Mon, 28 Oct 2019 09:35:26 GMT

I have turned on "nrfx_rtc" and "nrf_drv_rtc" and the "RTC1" instance for both and set the frequency to "32768" because I have no proper clue which one to use. I have also set the "nrfx_timer", "nrf_drv_timer" and "app_timer" running at the same frequency because still I don't know which one I really have to use. But still no succes.

RE: Setting up the app_timer with Keil and NRF52810

Vidar Berg — Mon, 28 Oct 2019 09:14:29 GMT

Hi,

The RTC used by app timer will not run unless the 32KHz clock source has been started beforehand. Do you know if you if that clock source it's running in your app? The Softdevice will start the clock during initialization if you are working on a BLE example.

Also, you should check the return value from app_timer_create() and app_timer_start() as we do in our examples to make sure they return NRF_SUCCESS.