Hardware requirements

  • Type-C USB cable

  • FRDM-MCXW23 Board

  • Personal Computer

Board settings

The switch for this examples is SW2 on the board (PIO0_18)

Output signal		Board location
SCT0_OUT4    		J2-6
SCT0_OUT5    		J2-7

Prepare the Demo

  1. Connect a USB cable between the host PC and the FRDM board J10.

  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

The log below shows example output of the SCTimer multi-state demo in the terminal window:

SCTimer example to output edge-aligned PWM signal

When user presses a switch the PWM signal will be seen from Out 5
When user presses the switch again PWM signal on Out 5 will turn off
The PWM signal from Out 4 will remain active all the time

Probe an oscilloscope to the output pins described in board settings, you will see one PWM signal present all the time. While The other PWM signal is triggered by the switch described in the board settings.