Pin change interrupt not working in Debug mode.

RE: Pin change interrupt not working in Debug mode.

DamonKelly — Thu, 04 Jul 2019 01:51:42 GMT

Hi Bjørn,

Do you have any suggestions?

RE: Pin change interrupt not working in Debug mode.

DamonKelly — Tue, 02 Jul 2019 22:41:44 GMT

Sorry, I hit "Verify Answer" accidentally...

RE: Pin change interrupt not working in Debug mode.

DamonKelly — Mon, 01 Jul 2019 23:02:36 GMT

The sensor is the STmicro LSM9DS1. The interrupt outputs are INT1_A/G (Accelerometer and gyroscope interrupt 1) and DRDY_M (Magnetic sensor data ready). They are both push-pull outputs.

In non-debug mode, the event handlers run correctly (I can see the data coming through, and see the signals on the scope).

In Debug mode, the event handlers are never called at all.

There is also an open-collector interrupt from a STM6601 Push-button controller that doesn't call it's event handler in Debug mode.

RE: Pin change interrupt not working in Debug mode.

bjorn-spockeli — Mon, 01 Jul 2019 11:43:50 GMT

HI Damon,

the nRF52840 should not alter the pin configuration when entering Debug mode.

Which pins to you have connected to the 9DOF sensor?

Does the code beside the event handler run properly in Debug mode, i.e. you're not asserting or ending up in an error handler ?

Have you verified that the output pin of the 9DOF sensor is toggeling when you're debugging the custom board?

Best regards

Bjørn