nRF52832 - SDK 15.3 - RTC example: Dummy_Handler loop

RE: nRF52832 - SDK 15.3 - RTC example: Dummy_Handler loop

Joaquim — Tue, 04 Jun 2019 16:08:11 GMT

Yes, both.

RE: nRF52832 - SDK 15.3 - RTC example: Dummy_Handler loop

Vidar Berg — Tue, 04 Jun 2019 15:32:08 GMT

Hi,

I was looking at SDK 15.2.0, sorry. Have you included both nrf_drv_clock.c and nrftx_clock.c in your project?

RE: nRF52832 - SDK 15.3 - RTC example: Dummy_Handler loop

Joaquim — Tue, 04 Jun 2019 15:11:31 GMT

Hi,

I only have nrfx_power_clock.h header file. I can't found the .c source in SDK nRF5_SDK_15.3.0_59ac345 version, which I use, but in the nRF5_SDK_15.0.0_a53641a it is...

I have copied it and I get an error when compiling "undefined reference to `nrfx_power_irq_handler'". I had defined POWER_ENABLED macro but without configuring the driver and including the .c. This is why I could compile without errors.

If I disable power macro, RTC works fine.

Thank you very much.

RE: nRF52832 - SDK 15.3 - RTC example: Dummy_Handler loop

Vidar Berg — Tue, 04 Jun 2019 15:03:15 GMT

Thanks for the additional info. The problem is likely that the POWER_CLOCK_IRQHandler is not defined. Have you included nrfx_power_clock.c in your project?

RE: nRF52832 - SDK 15.3 - RTC example: Dummy_Handler loop

Joaquim — Tue, 04 Jun 2019 14:02:24 GMT

Hi Vidar,

Please, find attached CPU and others registers.

I have done some changes (I use RTC1 and LF is XTAL) and now RTC is generating some interrupt under these conditions;

RTC1

Prescaler = 4095.

Channel compare = 0.

Compare counter time = 1, 2 or 3.

If compare counter time is 1 (rtc feq 125ms) RTC handler is executed 2 times. If counter is 2, rtc handler is executed 1 time, and for 3 or more times no execution. Then my code goes to dummy handler.

In the rtc handler I set the counter compare time and counter clear as below:

Thanks.

void rtc_handler(nrf_drv_rtc_int_type_t int_type)
{
uint32_t err_code;

if (int_type == NRF_DRV_RTC_INT_COMPARE0)
{
EventsApp.RTC |= Event_RTC_Timeout;

err_code = nrf_drv_rtc_cc_set(&rtc, 0, COMPARE_COUNTERTIME, true); //Set RTC compare value. This needs to be done every time as the nrf_drv_rtc clears the compare register on every compare match
APP_ERROR_CHECK(err_code);

nrf_drv_rtc_counter_clear(&rtc);
}
else if (int_type == NRF_DRV_RTC_INT_TICK)
{

}
}

devzone.nordicsemi.com/.../CPU-register.txt

RE: nRF52832 - SDK 15.3 - RTC example: Dummy_Handler loop

Vidar Berg — Tue, 04 Jun 2019 12:18:54 GMT

Hi,

I couldn't find the CPU registers in your attachment. I'm interested in the xPSR register when you have entered the dummy handler. The last bits tell us the ISR number.