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Can not connect to EVMDM6437 while using PCI

Jason Yang
Prodigy 200 points

Hi,

     I have a trouble when I use CCS3.3 software to connected DM6437 EVM DVDP while using PCI.

    The SW1 and SW2 are setted following the instuctions of EVMDM6437 FAQ/Status on the web site http://c6000.spectrumdigital.com/evmdm6437/reve/EVMDM6437_FAQ.html .

    When I tried to connect the board, it go failed on one machine, the message appear in the output window of the CCS3.3 is following:

      Error: Error 0x800020A0/-1250 Fatal Error during: Execution, Target Communication, Control,  Device driver: Lost USB connection to emulator. You should ABORT and restart to re-establish the USB link.   Sequence ID: 17 Error Code: -1250 Error Class: 0x800020A0

     For another machine, it connected seccesfully, but when reset CPU or load program, it goes failed.

     Thank you very much!                                                             
 

  • 0
    TI__Mastermind 41665 points

    Just a note on this, one cannot connect to the DM6437 using CCS over the PCI bus, CCS requres an emulator connection which could be an external emulator or the on board USB emulator in the case of the EVM. I just wanted to put this out there for future readers of this thread.

    Assuming you do still have the USB cable connected to the EVM while it is connected to the PCI bus you should still be able to connect. The Lost USB connection to emulator sounds like either something is getting pulled loose or there is some issue with the whole board being powered.

    Have you only tried using the on board emulation connection (no stand alone emulator like XDS510USB)? Can the boards both connect successfully on their own, outside of the PCI slot?

  • 0 in reply to Bernie Thompson TI
    TI__Mastermind 18130 points

    Also, USB enumeration can be a pain at times. If you are having issues where you lose connection to the DSP via a USB emulator (either external or the on-board USB) try closing CCS, power cycling the board, and reconnecting everything. Then start CCS and see if the USB driver is able to sync up again.

  • 0 in reply to Bernie Thompson TI
    Prodigy 200 points

    Thank you for your reply!

    Yes, I have only tried using the on board USB emulator in the case of the EVM. When the board outside the PCI slot, both connection and load program using CCS are successfully.