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TMS320F2800135: Don't feed watchdog, download and run, then it can't load program and erase Flash

Zane Wei
Intellectual 1245 points
Part Number: TMS320F2800135
Other Parts Discussed in Thread: UNIFLASH

Tool/software:

Hi Team,

Could you help me figure out why cause this? After download the program(don't feed watchdog), it can connect to XDS110， but can't debug again. If I want to connect the CPU, it will show below error.

_cgi-bin_mmwebwx-bin_webwxgetmsgimg__&MsgID=3267365695419698013&skey=@crypt_69c441bb_4808b036f08a4ef4d364af7e76117fb3&mmweb_appid=wx_webfilehelper.jfif

Best Regards,

Zane

  • 0
    TI__Expert 4315 points

    Hi Zane,

    It looks like the DCSM Zone 1 and 2 Passwords might have changed or the passwords specified in the gel file are incorrect. Did you modify the DCSM passwords?

    Kind regards,

    Skyler

  • 0 in reply to Skyler Baumer
    TI__Intellectual 1245 points

    Hi Skyler,

    I modify the DCSM to change the default boot mode pin, but don't set any lock.

    It works well when enable watchdog and feed watchdog, but after don't feed watchdog, it can't debug and can't load program, and even can't erase Flash by UNIFLASH.

    Best Regards,

    Zane

  • 0 in reply to Zane Wei
    TI__Expert 4315 points

    Hi Zane,

    Have you tried the steps suggested by the console? "Perform a debugger reset and execute the Boot-ROM code (click on the RESUME button in CCS debug window)"

    Kind regards,

    Skyler

  • 0 in reply to Skyler Baumer
    TI__Intellectual 1245 points

    Hi Skyler,

    The problem is we can't enter Debug mode, so there is no resume button.

    Now there are two chip can't debug/download after download the image(don't feed watchdog). I remembered another customer has encounter this issue before. It very strange!

    Best Regards,

    Zane

  • 0 in reply to Zane Wei
    TI__Expert 4315 points

    Hi Zane,

    If you aren't going to service the watchdog, can you just disable it? Does issuing an XRSn to the devices after a watchdog reset allow you to connect/debug again?

    Kind regards,

    Skyler