RE: QSPI Peripheral Activation Task

sunbing — Mon, 03 May 2021 14:25:54 GMT

Hi Hung Bui,

Thanks for the reply.

Managed to capture QSPI trace and there is clock observed.

I restart MCU only (thru debugger) without power cycle the board.

Will try deactivate task then.

Seems it always happens, sometimes 2 days or less, sometimes longer but eventually it will happen.

Hung Bui — Mon, 03 May 2021 10:45:16 GMT

Hi Bing Sun,

As you can find the information in this case: https://devzone.nordicsemi.com/f/nordic-q-a/28947/what-does-qspi-activate-task-do, the ACTIVATE task request the HFCLK and try to read the status from the external flash.

We would need to determine the READY task didn't return was because of the QSPI interface on the nRF52 or it's the external flash didn't response.

Could you try to capture a logic trace of the QSPI communication ?

You mentioned that you had to restart the application. Did you power reset the whole board or it's only the MCU got reset ?

Have you tried to trigger a DEACTIVATE task and then ACTIVATE again ?

How often did you observed the issue ? It always happened after 2-3 days or only occasionally ?