Hello,
I am working with the STM32N6570-DK and following the steps described in the following article to write the FSBL and application to flash and verify their operation:
https://community.st.com/t5/stm32-mcus/how-to-create-an-stm32n6-fsbl-load-and-run/ta-p/768206
Specifically, I am referring to section 2.2: "Second demo with FSBL and application".
However, I was unable to observe the LED blinking as expected.
While investigating the issue, I came across the following discussion:
https://community.st.com/t5/stm32-mcus-boards-and-hardware/nucleo-n657x0-q-failed-to-start-gdb-server/td-p/756404/highlight/true/page/2
After reviewing this and checking the OTP values, I noticed that the values for OTP11 and OTP124 were identical.
When I switched the BOOT mode to DEV and executed the FSBL from SRAM, the application written to flash started successfully and the LED began blinking.
Based on this behavior, I suspect that the FSBL is not being properly loaded into SRAM by the internal boot ROM.
Could you please advise on how to resolve this issue or what additional steps I should check?
Thank you in advance!
Best regards,
nemoto
