Waking the nRF51 / 52 from SD_APP_EVT_WAIT

[Caleb C]

We have an ISR parsing incoming serial data from the UART. When a valid packet arrives, I'd like to be able to wake the core from whatever low-power state is entered when the sd_app_evt_wait() function is called within the main loop.

Is there an SOC event or app event that can be manually triggered through the API to wake the core and start processing? Can custom events be added that wake the core and cause custom handlers to be executed?

[AmbystomaLabs]

You don't have to do anything. The interrupt request will automatically wake the processor so that your interrupt handler can run. And, regarding can custom events be added... Yes, essentially anything that generates an interrupt (timers, gpio, comms, etc.) will wake the processor so that they will be serviced. The only caveat is that your interrupts will wait to be serviced until the SD is done handling TX or RX activity.

See here: developer.nordicsemi.com/.../a01075.html

[AmbystomaLabs]

I'm glad it worked out as expected. If you could, please close out the question as "answer accepted". I'm trying to improve my points on the blog. Thanks in advance.