Interrupt using RTC

RE: Interrupt using RTC

Jørgen Holmefjord — Thu, 24 Sep 2020 07:58:40 GMT

That depends on how you have configured the RTC peripheral. The RTC driver will disable the interrupts in the interrupt handler. If you want the interrupt to be triggered after an overflow, you will need to remove this line, or call nrf_drv_rtc_cc_set() again to re-enable the interrupt. It is also possible to enable interrupts for the overflow event, by calling nrf_drv_rtc_overflow_enable().

RE: Interrupt using RTC

hrms — Thu, 24 Sep 2020 07:38:59 GMT

How can I keep working even if the RTC overflows and clears?

RE: Interrupt using RTC

Jørgen Holmefjord — Tue, 17 Mar 2020 09:15:57 GMT

Hi,

The RTC peripheral has 3-4 CC registers that you can set to different count values, The RTC will run until you clear it.

If you are using the RTC driver in the SDK, you can use nrf_drv_rtc_cc_set() to set multiple CC values, the second parameter to the function depicts the CC channel number.

Best regards,
Jørgen

RE: Interrupt using RTC

Turbo J — Tue, 17 Mar 2020 06:11:37 GMT

Yes - and it is already implemented in the app_timer module of the nrf sdk.