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CCS/EK-TM4C1294XL: Error connecting to the target

Alberto Zohan
Prodigy 215 points
Part Number: EK-TM4C1294XL
Other Parts Discussed in Thread: EK-TM4C123GXL

Tool/software: Code Composer Studio

Environment:

CCS 7.4 on all computers

OS: Windows 10 and Linux 64

The other day I tried loading a project (RTOS-based) onto an EK-TM4C1294XL board after it successfully built with no problems, but I got the error message saying that CCS could not connect to the target. I have now tried loading this project, the http get RTOS example, the blinky NON-RTOS example, and other RTOS projects that have worked just fine in the past, but they now all give the same error. I've done this on 3 different machines on both windows 10 and Linux. The cable IS connected to the debug port, I've switched out boards, and I've switched cables. I also tried deleting the target configuration file and having a new one generated by specifying the Stellaris In-Circuit Debug Interface in all of the projects' Properties > General. This problem doesn't happen if I try to load examples for the EK-TM4C123GH6PM. I'm at a loss. I've tried to give all the information I could think of, but if I left anything out, feel free to ask.

Edit: I had a colleague load the main project on one of his 1294's and one of mine, and both worked. He has the same CCS build (7.4.0.00015), used the same compiler version, XDC tools version (3.32.0.06) and TI-RTOS release (2.16.00.08), so I don't know what the difference is.

  • 0
    TI__Guru 72500 points
    If I understand you correctly, you have at least two EK-TM4C1294XL boards that you cannot connect to. You have at least one EK-TM4C123GXL board that works fine. Have you tried the unlock procedure on the non-working boards? In CCS it is under Tools -> on-Chip Flash. It is one of the last things near the bottom of that window.
  • 0 in reply to Bob Crosby
    Prodigy 215 points
    That is correct. I had not tried that, but CCS suddenly started connecting to both boards late yesterday. One board shipped with it's jumper set to get its power from a booster pack, but the other board was set to get it from the ICDI. That is the only thing I could identify, so why they weren't connecting is still unknown.