Hardware requirements

  • Mini/micro USB cable

  • FRDM-K32L2A4S board

  • Personal Computer

Board settings

Connect J4-11(PTE30/DAC_OUT) to J4-2 (PTB0/ADC0_SE8)

Prepare the Demo

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

  2. Open a serial terminal with the following 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

This following section shows how to run the demo:

DAC ADC Demo!

ADC Full Range: XXXX

Press any key to start demo.

Demo begin...

ADC16_DoAutoCalibration() Done.

Select DAC output level:

        1. 1.0 V

        2. 1.5 V

        3. 2.0 V

        4. 2.5 V

        5. 3.0 V

-->3

ADC Value: 2481

ADC Voltage: 1.999

What next?:
        1. Test another DAC output value.
        2. Terminate demo.
-->

At this point, the user can test another DAC output value or terminate the demo.

This configuration exhibits up to 2% error when reading back voltage.