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Enable Serial Wire Trace

To enable Serial Wire Trace on Luminary LM3Sx devices:

  • Connect J-Link/J-Trace to the board's Cortex Debug connector and to the host computer.
  • Configure µVision to capture Serial Wire Trace data.

Configure µVision to capture Serial Wire Trace data

  1. Open the dialog Options for Target — Debug.

    Select J-Link/J-Trace as the debugger adapter

  2. Enable Use, select Cortex-M/R J-LINK/J-Trace, and click Settings to open the Target Driver Setup dialog.

    Configure the Serial Wire Debug mode

  3. Select SW.
  4. Click the Trace tab.

    Configure Luminary devices for Serial Wire Trace

  5. Set Enable.
  6. Set the Trace Port to Serial Wire Output - UART/NRZ and enable Autodetect.
  7. The Core Clock must correspond to the device configuration.

Start the debugging session and verify the captured trace data with a µVision window.

Note

  • Use the examples delivered with the Luminary board ek-lm3s6965 as a reference.
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