Hello,
we have developed a solar powered LED module with an additional battery. It is based on the nrf52832. The WDT and TWI is mainly used and for BLE the soft device is applied. From time to time, the NRF resets itself. I do not really know, how to debug the problem, as it takes days or even weeks that it happens. Using RTT does not work, as it clears it buffers when reseting. We tried to store every possible error as some int value in the flash, but for that specific error, nothing is written. So we do not know what the problem could be. The TWI implementation uses timeouts and un/init in case of an error. Thus I do not believe that this is the problem.
Any suggestions to gain more insights?
[Update: The RESETREAS register is telling me 0x00000004; thus software reset. I implemented 'assert_nrf_callback(uint16_t, const uint8_t*)', 'app_error_fault_handler(uint32_t, uint32_t, uint32_t)' and 'HardFault_Handler(void)' and have there a while loop. As the WDT is activated, a WDT event should occur if these functions are active. I do not use 'NVIC_SystemReset()'. So how to proceed? Right now it is getting critical, as we get some complains about that spurious resets ... ]
Thanks.
