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unable to connect to target

Dimitris Dimitropoulos
Prodigy 50 points

Hi,

       I'm using the concerto development kit to program the F28M35 using CCS 4.2.4.00033. After starting debug, in the Debug tab i see both the CortexM3 and the C28xx but the status is "Disconnected Device".

But while trying to connect to the target I get the following error :

Error connecting to the target:
(Error -2131 @ 0x0)
Unable to access device register. 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).
(Release 5.0.429.0)

Any clues ?

   D.

 

 

 

  • TI__Expert 3760 points

    Dimitris -

    Several users have gotten this similar error when upgrading CCSv4.2.4 via Update advisor.  It seems that doing a fresh intsall of Code Composer Studio v4.2.4.00033 has fixed the problem for many users.

    You may try posting this to the Code Composer Studio forums as well.

  • in reply to Chrissy Chang
    Prodigy 50 points

    Hi Chrissy,

     

        Thanks for your reply. I've actually solved it, there are posts about this problem because others have had it. Basically if you're using the usb on docking station to power the card, you should disable the jtag on the docking station (place a jumper on J8 on the dock. station) . Then everything will work fine.

       D.