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TMDSCNCD263: Unable to access the DAP

Til Schoengarth
Prodigy 585 points
Part Number: TMDSCNCD263

Hello everyone,

I was using the AM263 CC, connected to TMDSCNHSECDOCK, without any problem. When I came back from my lunch break, suddenly, when trying to debug my project, CCS (12.2.0) returns an error:

Cortex_R5_0: GEL Output: Loading Gel Files on R5F0
Cortex_R5_0: GEL Output: Gel files loading on R5F0 Complete

CS_DAP_0: Error connecting to the target:
(Error -1170 @ 0x0)
Unable to access the DAP. Reset the device, and retry the operation. If error persists, confirm configuration, power-cycle the board, and/or try more reliable JTAG settings (e.g. lower TCLK).
(Emulation package 9.10.0.00080)

I have not changed any settings from when it was working.

The same error persists with example programs from the SDK (8.5).

I tried rebooting the board, CCS and the PC. Using a different USB port doesn't help either. 

The LEDs aren't indicating any error.

What can I do to solve this problem?

Thanks in advance!

Til

  • 0
    TI__Genius 15435 points

    Hi Til,

    This is most commonly occured CCS error with Am263x-CC cards. Did you try re-launching the Target configuration? 
    Also what is the power supply you have tried to power-up the Am263x-CC? Also I assume you tried doing a POR (pressing the reset button on the CC). 

    Also try to directly power the AM263x-CC using the on-board USB-C connector instead of the HSEC Docking station's power input.

    Thanks,
    G Kowshik

  • 0 in reply to Kowshik Gudimetla
    TI__Prodigy 585 points

    Hi Koshwik,

    thanks for your quick answer

    I tried launching a custom target config and the same error occurred. I supplied power via the HSEC Docking station. Yes I also did a POR.

    Powering it up directly via USB-C didn't work even though the USB port I connect it to has the battery sign to proof power supplying capabilities. This has been true before the error with CCS too, I just always used the HSEC Docking Station.

    One suspicion I have is that when I tried to input voltage for the ADC that I created a short circuit by connecting the V- pin of the input voltage to the 3,3V pin on the docking station and something might have been broken.

    Best Regards and thanks in advance

    Til

  • 0 in reply to Til Schoengarth
    TI__Genius 15435 points

    Hi Til,

    Then most probably the IC is blown out or damaged in some way. I'd recommend ordering a new part or SoC.

  • 0 in reply to Kowshik Gudimetla
    TI__Guru**** 196566 points

    Hi Til,

    The AM263x CC has an built-in XDS110 emulator, and has the option to use the JTAG signals from the HSEC connector. The DIP Switch SW5 is used to select JTAG debugger: on board XDS110, or external debugger connected to CC docking station.

    If the external debugger is selected by SW5, connecting on-board XDS110 to the target will throw a JTAG DAP error:

    Cortex_R5_0: Error: (Error -1170 @ 0x0) Unable to access the DAP. Reset the device, and retry the operation. If error persists, confirm configuration, power-cycle the board, and/or try more reliable JTAG settings (e.g. lower TCLK). (Emulation package 9.9.0.00040)