Hardware requirements

  • Type-C USB cable

  • FRDM-MCXL255 board

  • Personal Computer

Board settings

Make sure you have solder bridges SJ1 and SJ2 set to

  • 2-1 for the main core (cm33)

  • 2-3 for AON core (cm0+)

Prepare the Demo

  1. Connect a USB Type-C cable between the host PC and the MCU-Link USB port (J16) 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

The following lines are printed to the serial terminal when the demo program is executed.

*********QUADTIMER EXAMPLE START*********
****Timer use-case, 50 millisecond tick.****

 Timer interrupt has occured !
 Timer interrupt has occured !
 Timer interrupt has occured !
 Timer interrupt has occured !
 Timer interrupt has occured !
 Timer interrupt has occured !
 Timer interrupt has occured !
 Timer interrupt has occured !
 Timer interrupt has occured !
 Timer interrupt has occured !
****Chain Timer use-case, 10 second tick.****

 Timer interrupt has occured !
 Timer interrupt has occured !
 Timer interrupt has occured !
 Timer interrupt has occured !
 Timer interrupt has occured !
  ****Timer use-case, about 65.5s Over flow Test.****

 Timer Overflow has occurred !
*********QUADTIMER EXAMPLE END.*********