I2C event handler invoked from inside RTC event handler

RE: I2C event handler invoked from inside RTC event handler

Kaveh.M — Tue, 11 Jan 2022 17:45:46 GMT

Excellent. That worked perfect.

RE: I2C event handler invoked from inside RTC event handler

Jørgen Holmefjord — Tue, 11 Jan 2022 14:02:58 GMT

Hi,

You are not using the RTC configured interrupt priority defined in your sdk_config.h file, so the priority is likely set to 0 (or whatever else is stored in the area where rtc_config is placed in RAM). You can read out the actual priorities by looking at the NVIC->IPRx registers:

To use the priority from your sdk_config.h file, you can assign the default config to the variable like this:

nrf_drv_rtc_config_t rtc_config = NRF_DRV_RTC_DEFAULT_CONFIG;

Best regards,
Jørgen

RE: I2C event handler invoked from inside RTC event handler

Kaveh.M — Mon, 10 Jan 2022 19:44:37 GMT

RTC interrupt priority is 7 and lower than the TWI interrupt priority that is set to 6. I attached sdk_config.h here to make sure this is done properly.

devzone.nordicsemi.com/.../6175.sdk_5F00_config.h