While loop not terminating, but the event handler is called.

RE: While loop not terminating, but the event handler is called.

Turbo J — Mon, 07 Jan 2019 00:23:19 GMT

No, the handler was called - but the function never returned.

This is what I meant with dead loop - you cannot wait for another interrupt inside an interupt handler with the same (or higher) priority.

RE: While loop not terminating, but the event handler is called.

freelon — Sun, 06 Jan 2019 17:26:13 GMT

Thank you so much! Everything works as expected now! Do you know why uncommenting the logging in the while loop caused the event handler to not be called? Is it the same reason - the flush?

RE: While loop not terminating, but the event handler is called.

Turbo J — Sun, 06 Jan 2019 12:09:48 GMT

NRF_LOG_FLUSH() inside the SPI event handler can hang (dead loop), because that will be called in interrupt context and waits for interrupts internally.