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Issue about running code from flash (Stand-alone operation)

lz li
Prodigy 180 points
Other Parts Discussed in Thread: TMS320F28335

Hi,

I am creating CCS project and doing some tests, but now I met issue that my project could not run from flash when with emulator disconnected (stand-alone operation).

CCS4 version: 4.2.3.00004 

Target platform: TMS320F28335 Experimenter's Kit

Emulator: XDS100 emulator on chip 

Issue description:

I build the project with linker command file "28335_FLASH_lnk.cmd"(see attached file) and debug successfully, but after I program it into flash, it failed to run (Seem failed to boot, the LEDs were not blinking as normal).

The program sequence:

1>Build the project with "Debug" configuration;

2>Click "Debug" button to launch debug session during which the flash would be erased, programed and verified;

3>Click "Load program" button to reload again;

4>Terminate the debug session and power up the board again;

Is the program process incorrect? Or my configuration especially linker file wrong? (See map file attached)

It really confused me a lot and I have checked the boot process for a while , it seems OK, but why it fails to run when stand-alone operation?

Hope hear from you soon and thank you by advanced!

  • TI__Guru**** 474071 points

    Hello,

    lz li said:

    The program sequence:

    1>Build the project with "Debug" configuration;

    2>Click "Debug" button to launch debug session during which the flash would be erased, programed and verified;

    3>Click "Load program" button to reload again;

    4>Terminate the debug session and power up the board again;

    Step #3 is not really needed since is step #2 will load/flash the program. Otherwise the steps look fine.

    If you terminate the debug session and power cycle the board (step #4), I would expect the code you flashed to run and blink the LED. Can you try shutting down CCS and disconnecting the cable between the kit and the PC and doing a power cycle and see if the LED blinks?

    Thanks

    ki

  • in reply to Ki
    Prodigy 180 points

    Hi Ki,

    Thanks very much for your kind and fast response! I have done the test based on your suggestion, but unfortunately, it does not work!

    I doubt it is caused by the linker cmd file but not very sure, so I attached it and could you please check it for me?

    Thanks very much!

    lz

  • in reply to lz li
    Prodigy 180 points

    Hi Ki,

    Also I got the suggestion that it may be caused by the watchdog timeout, and it is better to disable watchdog before _c_int00 is called.

    But my question is, in CCS4 project, where can I find the asm file "CodeStartBranch.asm" to disable the watchdog? I could not find it in my project!!

    Thanks very much!

    lz

  • in reply to lz li
    Prodigy 190 points

    Hi,

    Pls check you boot load pin settings for you micro controller.

    If the boot load setting is not set as BOOT from FLASH.  You're program will lost once power-off.

    Regards,

    Karthick PH

  • in reply to karthick ph
    Prodigy 180 points

    Hi Karthick,

    Thanks for your reply!

    I have checked the boot load pin status, all four pins GPIO84~87 should be kept as high(1) which means "Boot to flash" is selected.

    See attached pictures.

     


  • in reply to lz li
    Prodigy 190 points

    Hi lz,

      It looks you have done the boot mode settings correctly.  If your program still not booting from FLASH, there is a

    possibility of allocating memory sections to the FLASH.  please verify your .cmd linker file. (also I have attached the

    .cmd file to boot from flash)2867.build_linker.zip

    Also read  "Running Code Standalone" topic from the following link;

    http://processors.wiki.ti.com/index.php/C2000_Flash_Common_Issues/FAQs#Using_Breakpoints_During_Debugging

    Best Regards,

    Karthick

  • in reply to karthick ph
    Prodigy 180 points

    Hi Karthick,

    Thanks very much for your reply.

    My vacation is coming, I will try your suggestion after my vacation and keep you informed the result.

    Best regards!

  • in reply to lz li
    Intellectual 365 points
    Hi, it is solved?