[SOLVED] GDB Server not connecting to nRF51822

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  • [SOLVED] GDB Server not connecting to nRF51822

    What should the initial traffic from the GDB Server to a target look like?
    I am using the nRF51 DK's debug out to program a board I have made. The nRF51 DK includes an OB debugger chip and a debug out to another nRF1822. I am not able to connect my board. Using Saleae's Logic analyzer and SWD protocol analyzer, the first four lines of the SWD traffic are attached.

    - what is the first packet telling me? It says "OK" for the ACK, but then it continues sending packets to the access port.
    - is there documentation on the SWD packets and/or videos on debugging SWD traffic?

    Advice appreciated. Thank you.
    Files

    • SWD_sniff.pdf

      (78.01 kB, downloaded 503 times, last: )

    The post was edited 2 times, last by HappyDay ().

  • Hi HappyDay,

    sorry for the delay in response.
    Since you posted this thread, can I consider this issue as solved?: Failed to execute RAMCode for RAM check!

    In case not, can you tell me the S/N of your J-Link OB? (Or, better, post the output of J-Link Commander?)

    Best regards,
    Niklas
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