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TMS320F28032: C2prog bootloading... echo error

user4997907
Intellectual 270 points
Part Number: TMS320F28032
Other Parts Discussed in Thread: C2000WARE

Hello,

I've recently put together a PCB and i'm trying to program it through the SCI Bootloader by a Program called C2Prog

Whenever I run the program I get the following error:

*** PLEASE RESET TARGET IN SCI BOOT-LOADER MODE ***
Pinging target... Baudrate locked.
Bootloading...  echo error!

Does any one know a possible cause of this?

Thanks,

Christian

  • 0
    TI__Guru* 87155 points

    Christian,

    Please look at Q18 in the wiki: http://www.codeskin.com/c2prog-faq 

    You can contact C2Prog at info@codeskin.com

    Thanks and regards,
    Vamsi

  • 0 in reply to Vamsi Gudivada
    Intellectual 980 points

    Try following this sequence:

    1) Configure GPIO for SCI bootmode

    2) Power-cycle / reset MCU

    3) Click "Program" in C2Prog GUI

  • 0 in reply to CodeSkin
    Intellectual 270 points

    @Vamsi I've contacted the C2Prog fellows and they're also working with me (trying to get as much info as possible)

    I've made sure to measure the following criterias are met:

    TRST = 0

    GPIO37 = 0

    GPIO34 = 1

    are all set as the micro-is powered on (already tied to either VDD, or GND)

    However, whenever I look at the TX line is constantly toggling and it's sitting at a slightly higher voltage level than ground

    I've attached a picture of the capture. I'm not sure if this is typical behavior or not in SCI bootloader mode

    -Christian

  • 0 in reply to user4997907
    TI__Mastermind 30255 points
    Christian

    Your boot pins are configured correctly. You could also load the boot symbols (via boot .OUT located in C2000Ware under libraries/boot_rom/f2803x) to confirm you're in SCI boot but based on what you're setting, you should be.

    The SCI bootloader will echo back an "A" after autobaud lock. Other than that, you shouldn't see TX activity. Your TX line toggling is not typical behavior.

    Best regards
    Chris
  • 0 in reply to Christopher Chiarella
    Intellectual 270 points
    Christopher,

    We found the issue with our board. We were controlling the reset pin with a buffer. The buffer in the original schematic was an inverted logic while our new board had positive logic. Long story short, the toggling of the TX line was a result of the micro in an endless cycle of resets

    We corrected this issue and we are able to program the device through the SCI bootloader using C2Prog

    Thank you very much for all your help!

    -Christian