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CCS/LAUNCHXL-CC1350: printf debug output over SWO pin and XDS110

hkr
Intellectual 920 points
Part Number: LAUNCHXL-CC1350
Other Parts Discussed in Thread: CC1350, SYSBIOS

Tool/software: Code Composer Studio

Hello,

Is it possible to use the SWO pin of the CC1350 controller to send printf debug output via XDS110 either to CCS or to one of the COM ports the XDS110 creates? (Auxiliary Data Port/User Uart)?

Thanks,

Harald

  • 0
    TI__Expert 8765 points
    Hello hkr,
    Did you refer to this wiki page?
    processors.wiki.ti.com/.../SWO_Trace

    Regards,
    Prashanth
  • 0 in reply to PrashanthS
    Intellectual 920 points

    Hello Prashanth,

    Yes, this is well about what I've asked. In the configuration, the Aux COM pin can be chosen between TDO and UART.

    But In our design, we won't have TDO nor UART free for debugging reasons, so the question is about getting the SWO Trace over the SWO pin (DIO18).

    Thanks, Harald

  • 0 in reply to hkr
    TI__Guru**** 317180 points
    Have you looked at this post: e2e.ti.com/.../412139 ?
  • 0 in reply to TER
    Intellectual 920 points

    Thanks, I have stumbled upon that post and some others while searching the E2E community forums.

    So if I understand correctly, SWO trace with the SWO pin is possible, but not with the XDS110 - I would need the XDS200?

    With XDS110, there is no item "SWO Trace" to select in the target configuration of CCS.

    But what I don't understand  - If I don't need trace, but only printf, can this "Auxiliary COM Port" the XDS110 generates be used for that?

    And further questions - Would it be possible to connect the CC13x0 SWO pin to the XDS110 TDO pin, because this pin I can route to the Aux COM port in the CCS target configuration?

    And how do I printf to SWO or TDO pin in the target's firmware? I'm thinking about some Sysbios instrumentation to do this...

    Thanks!

    hkr