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CCS/TM4C123AH6PM: Microcontroller Software is not flashable / Debugger doesn't work

Ali Naseri
Prodigy 180 points
Part Number: TM4C123AH6PM

Tool/software: Code Composer Studio

Hi, I have the following problems with CCS,

from one day to the next, the debugger no longer worked and the breakpoints could not be activated because an error message came from the breakpoint manager:
which was approximately:
"Symbols are not loaded, line can't be resolved to an address."


When flashing, CCS switches to the debug interface.

I uninstalled CCS v8 and installed CCS v9. I can set breakpoints again, but still have two basic problems:

The µC-Software that used to work well on v8, also doesn't work on the microcontroller when updating to v9.
The software is proper to compile, build and flash, but it doesn't work on the microcontroller.

When I want to flash the software directly, CCS v9 also changes to the debug interface, which it never did in v8 when it was working.

The problem could be that the development PC already crashed several times with Windows when was shutting down, because the mains voltage was switched off too early.

What can I do to get CCS running again on this PC?


Many thanks in advance for good advice...

  • 0
    TI__Guru**** 162305 points
    Ali,

    How is it that you are "flashing" in CCS? i.e. what are you selecting in CCS to do this.

    In general when launching a debug session in CCS it will switch to the debug perspective. In CCSv8 if you choose to load a program while in the Edit perspective it will load the program but not switch to the debug perspective. In v9 it seems to switch. I will have to follow up on that change, it may be a bug.

    The message "Symbols are not loaded, line can't be resolved to an address." means that no symbol file has been loaded. CCS uses the symbol file to map a symbolic name to an address. i.e. it uses that to know that line 5 in main.c is actually at 0x00004000 on the device and that is where the breakpoint gets set.

    So in v9 you can build and flash the program on the micro controller but it does not work? Are you able o run, halt, step? Can you view memory? I am not sure that CCS is broken here. Does a simple hello world program work?

    Regards,
    John
  • 0 in reply to JohnS
    TI__Guru**** 162305 points
    Ali,

    Since I have not heard back from you I am going to assume that you were able to get past this and will close this thread. If that is not the case feel free to reply or to post a new thread.

    Regards,
    John