Hardware requirements

  • Mini/Micro USB cable

  • FRDM-K22F board

  • Personal Computer

Board settings

No special is needed.

Prepare the Demo

  1. Connect a USB cable between the PC host and the OpenSDA USB port on the board.

  2. Open a serial terminal on PC for OpenSDA serial device with these settings:

    • 115200 baud rate

    • 8 data bits

    • No parity

    • One stop bit

    • No flow control

  3. Download the program to the target board.

  4. Either press the reset button on your board or launch the debugger in your IDE to begin running the demo.

Running the demo

When the demo runs successfully, the log would be seen on the OpenSDA terminal like:

PDB DAC trigger Example.

DAC Buffer Information Buffer index max : 15 Buffer watermark : 14 Type any key into terminal to trigger the DAC buffer through PDB …

DAC Buffer Index 0: ReadPointerTopPositionEvent DAC Buffer Index 1: DAC Buffer Index 2: DAC Buffer Index 3: DAC Buffer Index 4: DAC Buffer Index 5: DAC Buffer Index 6: DAC Buffer Index 7: DAC Buffer Index 8: DAC Buffer Index 9: DAC Buffer Index 10: DAC Buffer Index 11: DAC Buffer Index 12: DAC Buffer Index 13: DAC Buffer Index 14: WatermarkEvent DAC Buffer Index 15: ReadPointerBottomPositionEvent