RE: example code to generate different nrf52 reset cause

yogeshiggalore — Sat, 27 May 2023 06:44:54 GMT

thanks, jorgen

this helps a lot. I will try to create an example code as you suggest.

Jørgen Holmefjord — Fri, 26 May 2023 10:24:36 GMT

Hi,

We do not have example code that can be used for all reset reasons, but we have examples for the most typical use-cases.

OFF: System OFF example with wakeup from GPIO.
NFC: Wake on NFC Example
RESETPIN: Press the reset button on the DK (make sure CONFIG_GPIO_AS_PINRESET is defined in the project). Alternatively, you can connect a GPIO the Reset pin and assert the GPIO.
SREQ: Call NVIC_SystemReset() from code.
LOCKUP: The only way I know to cause CPU lockup is to trigger a HardFault from the HardFault handler.
DOG: See WDT Example. Not pressing the button within 2 seconds to feed the watchdog will cause a watchdog reset.
DIF: As far as I know, this can't be done from code, but will happen if you attach the debugger when in system OFF mode.
VBUS: Not aware of any example codes showing this, but it should be as simple as entering System OFF mode, then connect the nRF_USB port to power.
LPCOMP: Start out with the LPCOMP Example and extend it with going to System OFF after initialization.

Best regards,
Jørgen