Watchdog RAM Retention

RE: Watchdog RAM Retention

Franco Fischer — Thu, 28 Oct 2021 18:07:42 GMT

Thanks! I found my error, i have .ram_persist on both flash_placement.xml, but the RAM_START of the bootloader differs, so the .ram_persist section is located in diferent position.

I change the RAM_START of the bootloader to match the value in the application and works perfectly.

Thanks a lot for the quick response!!!

RE: Watchdog RAM Retention

Turbo J — Thu, 28 Oct 2021 15:50:02 GMT

Would that place your .ram_persist section to a different address in the bootloader? Because that would not work either.

RE: Watchdog RAM Retention

Franco Fischer — Wed, 27 Oct 2021 15:57:37 GMT

Do you mean i have to add <ProgramSection alignment="4" keep="Yes" load="No" name=".ram_persist" address_symbol="__start_ram_persist" end_symbol="__stop_ram_persist" size="8" /> in the flash_placement.xml of the bootloader also?

RE: Watchdog RAM Retention

Turbo J — Wed, 27 Oct 2021 14:03:19 GMT

The bootloader may simply overwrite your RAM locations, IIRC it initalizes RAM.

You may need to modify the bootloader, at least in the linker script/settings.