This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

CCS/TM4C123GH6PM: Bootloader with TM4C123, Startup problem

Part Number: TM4C123GH6PM

Tool/software: Code Composer Studio

Hi Forum,

through my last posts I manage to build a stable version of my program and as a result it works flawless on my own hardware.

As a next step I want to use a serial UART bootloader to flash my controller via the UART0 interface. Trying to achieve this I faced some obstacles which left me behind a little bit confused. Besides my program I want to use, I cannot debug the bootloader when flashed, because it always stops when copying the code image from flash to SRAM. I also tried that with my EK-TM4C1294 but could not succeed there either.

Starting here at the start of the program in my startup script:

_c_int00: .asmfunc b ResetISR

the program manages to come to the

    ;; Initialize the processor.
    ;;
    bl      ProcessorInit

routine with the error mentioned below.

I could imagine that this is just a settings things, however my assembler lessons are long ago and I cannot image why I can not step through this.

Regards,

Volker