Hardware requirements

  • Mini/Micro USB cable

  • FRDM-K32L2A4S board

  • Voltmeter

  • Personal Computer

Board settings

To measure the DAC output, connect J4-11 to positive of Voltmeter

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.

  5. A multimeter may be used to measure the DAC output voltage.

Running the demo

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

DAC CONTINUOUS LPTMR EDMA DEMO
Please probe the DAC output with a oscilloscope.

Then user can measure the DAC output pin to check responding voltage.