Fixed PlatformMgr().Shutdown() for NRF53

[bdlr2]

Linked to my case on the DevZone https://devzone.nordicsemi.com/f/nordic-q-a/108101/device-crash-when-doing-a-software-reset

When calling the function PlatformMgr().Shutdown(); (intentionally, or through a factory reset) a Hard Fault happens because the communication is broken/not in sync anymore between the App and Net cores of the NRF5340. My fix proposes to first reset the network core then reset the application core.

[LuDuda]

Hello @bdlr2,

Thank you for your contribution.

I believe we should not need to call nrf_reset_network_force_off in the Matter platform, as this should be handled internally by sys_reboot.

Have you encountered this issue on the nRF5340DK, or only on a custom board? If I had to guess, it's possible you've designed your own board and the nrf5340_cpunet_reset.c file has not been included in board's CMakeLists.txt. You can find an example here (note the if-statement): nRF5340DK CMakeLists.txt.

[bdlr2]

Hello @LuDuda, thanks for the feedback.
That's indeed on a custom board, but I double checked and the nrf5340_cpunet_reset.c is included properly in the CMakelists.txt. My board was derived from the nRF5340DK to avoid this kind of issues.

[LuDuda]

Hello @LuDuda, thanks for the feedback. That's indeed on a custom board, but I double checked and the nrf5340_cpunet_reset.c is included properly in the CMakelists.txt. My board was derived from the nRF5340DK to avoid this kind of issues.

@bdlr2 Have you been able to check the newest SDK if the problem still exists? As i mentioned above, I would like to fix this issue outside of the Matter code.

[bdlr2]

@LuDuda no, I didn't check yet.