Hardware requirements

  • Micro USB cable

  • TWR-KM35Z50MV3 board

  • Personal Computer

Board settings

  • Connect VREF_OUT (J2-2) to J25-24(ADC_SE15).

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:

VREF example ADC16_DoAutoCalibration() Done. ADC Full Range: 4096 Defalut (Factory) trim value is :38 ADC value: 1506 Use trim value: 0 ADC value: 1464 Use trim value: 4 ADC value: 1489 Use trim value: 8 ADC value: 1468 Use trim value: 12 ADC value: 1473 Use trim value: 16 ADC value: 1478 …… ADC value: 1496 Use trim value: 56 ADC value: 1481 Use trim value: 60 ADC value: 1492