bootloader_secure_ble with NRF_LOG RTT

[abhipray]

I am trying to debug a custom version of the bootloader_secure_ble example but am running into FLASH space issues. The bootloader app does not fit into FLASH with -Og optimization OR with NRF_LOG activated. I am using SDK14 and S132 v5.0.

This page here gives a start address(0x78000) and a size for the bootloader (24kB). Can I change these values in my linker script? What all changes would I need to make in order to get more space for my bootloader?

The specific problem I am trying to debug is when nrfConnect successfully connects to the DFU BLE service, starts the DFU process but terminates before that. There could be a prevalidation issue but I can't pin-point the exact problem without any debugging capabilities.

[bjorn-spockeli]

We have a Secure Bootloader example in the SDK that already has RTT logging enabled by default, you can find it under \examples\dfu\bootloader_secure_ble\pca10040_debug

My suggestion would be to use this as a template when enabling RTT logging in your customized bootloader.

Best regards

Bjørn

[abhipray]

Thanks, that is very helpful.