Hardware requirements

  • Type-C USB cable

  • FRDM-MCXA156 Board

  • Personal Computer

Board settings

DAC output pin: J2-9(P2_2)

Prepare the Demo

  1. Connect the type-C USB cable between the PC host and the USB ports on the board.

  2. Open a serial terminal on PC for the 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 MCU-Link terminal like:

DAC buffer interrupt Example. Press any key to trigger the DAC… DAC next output: 200 DAC next output: 300 DAC next output: 400 DAC next output: 500 DAC next output: 600 DAC next output: 700 DAC next output: 800 DAC next output: 900

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