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Enable Embedded Trace Buffer (ETB)

To enable CoreSight ETB tracing on Freescale MK70FN1M devices:

  • Connect ULINKpro to the board's Cortex Debug+ETM connector and to the host computer.
  • Configure µVision to capture ETB trace data.

Configure µVision to capture ETM trace data

  1. Enable Use, select ULINK Pro Cortex Debugger, and click Settings to open the Target Driver Setup dialog.

    Select ULINKpro as the debugger adapter

  2. Click the Trace tab.

    Options for ETB trace

  3. Set Trace Enable and ETM Trace Enable.
  4. Set Trace Port to Embedded Trace Buffer.
  5. 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 Freescale board TWR-K70FN1M as a reference.
  • ETB tracing works in Serial Wire Debug as well as in JTAG Debug mode.
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