Hardware requirements

  • Mini USB cable

  • TWR-KM34Z75M board

  • Personal Computer

  • Elevator Tower

Board settings

Connect J17.

Prepare the Demo

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

  2. Connect the analog signal source’s output to the input of used-defined comparator’s channel (defined as “DEMO_CMP_USER_CHANNEL” in source code.)

  3. Open a serial terminal with the following settings:

    • 115200 baud rate

    • 8 data bits

    • No parity

    • One stop bit

    • No flow control

  4. Download the program to the target board.

  5. Reset the SoC and run the project.

Running the demo

When the demo runs successfully, the following message is displayed in the terminal:

CMP polling Example

Then change CMP analog input, and watch the change of LED. - CMP0_IN1 (Jump A63 on Elevator Tower) connected to VCC = 3.3V (Jump B3 on Elevator Tower): LED ORANGE on - CMP0_IN1 (Jump A63 on Elevator Tower) connected to GND ( Jump B2 on Elevator Tower): LED ORANGE off