Ozone debugger causes hardfault

RE: Ozone debugger causes hardfault

Sigurd — Wed, 20 Sep 2023 18:39:10 GMT

[quote user="BvdP4Celsius"]Is your answer relevant for Zephyr OS also? You mentioned 'Softdevice', however under Zephyr I don't use the softdevice (right?)[/quote]

Yes, in nRF Connect SDK's case, it will be the SoftDevice Controller. If you pause the CPU, so that BLE real-time requirements are not meet, you wil get a MPSL assert and then a hardfault in the log. Example:

RE: Ozone debugger causes hardfault

BvdP4Celsius — Wed, 20 Sep 2023 06:32:24 GMT

Hi Sigurd,

Is your answer relevant for Zephyr OS also? You mentioned 'Softdevice', however under Zephyr I don't use the softdevice (right?)

RE: Ozone debugger causes hardfault

Sigurd — Tue, 19 Sep 2023 12:59:46 GMT

Hi,
If you are halting the CPU using breakpoints, while the SoftDevice is active, then it will assert, since it needs the CPU to meet it's real-time requirements, and it will detect that it was not able to process interrupts and events in time if the CPU is halted, and it will then assert.