When NRF_LOG_BACKEND_FLASH_ENABLED is enabled, its not writing flash logs at the address specified with NRF_LOG_BACKEND_FLASH_START_PAGE

[Vikas NC]

Hi, 

I enabled flash log backend with NRF_LOG_BACKEND_FLASH_ENABLED  set to 1, and NRF_LOG_BACKEND_FLASH_START_PAGE to custom address to keep it as the starting address for flash logs.

During debugging, I'm seeing the logs are not written at the above address. Please help us in following the right method to achieve this.

I followed this case https://devzone.nordicsemi.com/f/nordic-q-a/58111/implement-flashlog-backend/235662#235662 for enabling/writing backend flash logging.

We are using nRF52810, sdk 16.0.

Thank you,

[Simonr]

Hi

What value have you set NRF_LOG_BACKEND_FLASH_START_PAGE to? Are the logs saved to the correct address when you just run the device? You can try erasing the flash (I.E.using nrfjprog --eraseall or the provided API) in case there is data stored in that address already. Note that flashlogs are dropped if the allocated flash area is full. 

Best regards,

Simon