unable to compile application after activating CONFIG_BOOTLOADER_MCUBOOT option

[Alexf]

hello all,

I'm fairly new to nRF SDF and its build environment. I browsed a lot of posts but did not find the solution to what is probably a basic misconfiguration error on my part.

I am using SDK v2.9.1 with Visual Studio Code and the EV-BM833 board.

My application runs fine when in stand alone mode (no boot loader) and now I want to add the bootloader to handle firmware updates in production mode.

I have able to compile, run and debug the MCUbootloder image itself without issue.

The problem is that my application does not compile when I enable the MCUboot option (CONFIG_BOOTLOADER_MCUBOOT=y).
The compilation error being: "zephyr/zephyr_pre0.elf section `rodata' will not fit in region `FLASH'".

From what I could gather, this compilation error means that the CONFIG_BOOTLOADER_MCUBOOT option is actually being ignored (causing the partition manager to not be properly configured).

The application is being built with sysbuild configuration. I tried adding child/mcuboot.conf with CONFIG_BOOTLOADER_MCUBOOT=y with no luck. It tried building without sysbuild too...

I attached my project to that post.

Any help is welcomed,

Best regards,

Alex

8814.peripheral_uart.zip

[Vidar Berg]

Hello Alex,

You may need to reduce the size of the bootloader and your application to make everything fit in flash. Please have a look my answer here for more details:  Problem with flash overflow when adding BLE DFU on nRF52833  

Best regards,

Vidar

[Alexf]

hello Vidar,

I am struggling to find a MCUmgr SMP client that I can just embedded in my stm microcontroller to flash the BM833.

is there such a lib or client available today in C ?

if not, could you point me to a document that describes the commands to send over UART in order to transfer the new application firmware to the bootloader ?

thanks in advance,

Best Regards,

Alex