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Enable Serial Wire Trace

To enable Serial Wire Trace on Atmel AT91SAM3 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 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 Atmel SAM3x devices for Serial Wire Trace

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

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

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