Hello,
Looking at the already opened questions, there seem to be some similar questions asked when migrating to the DTS partitions, but i haven't found the answer on specific combination (9151 with external flash and mcuboot on 3.4.0 release)
We are using a custom board with nrf9151. Using the 3.4.0 NRF connect release for its long term support.
I can get the nrf9151DK/ns build and successfully run "hello world" application using the mcuboot and external flash.
Basically modifiy the dfu example [0], define changes in device tree, and flash. Output is seen on the UART.
When using custom board definition there are issues with stability.
Custom board definition is minimal. We have defined in device only SOC, mx25r8035f SPI flash and UART (for logging) in dts.
Partitioning is also defined via dts.
One of the issue is same as here where I add the CONFIG_TFM_LOG_LEVEL_SILENCE flag (same issue as [1] ) , the compilaton goes through, but after flash the device fails to boot. Nothing is shown from MCU or application on uart.
When on debugger there is an exception in MCUBoot, that i cannot catch. Looking at the documentation i am slightly lost (for the 3.4.0 release and DTS there still seem to be some documentation missing for the 91 series.
Is there a minimal working set of configuration flags and dts files that produces stable mcuboot with external flash?
Thanks in advance,
Best regards,
MIha M
[0] https://academy.nordicsemi.com/courses/nrf-connect-sdk-intermediate/lessons/lesson-9-bootloaders-and-dfu-fota/topic/exercise-3-dfu-with-external-
[1] devzone.nordicsemi.com/.../compilation-of-nrf9151-project-with-tf-m-log-routed-to-uart0-results-in-error-undefined-reference-to-stdio_init