This is the documentation for the latest (main) development branch of mcuxpresso sdk. If you are looking for the documentation of previous releases, use the drop-down menu on the left and select the desired version.

Hardware requirements

• Mini USB cable

• FRDM-K32L2A4S board

• Personal Computer

Board settings

No special is needed.

Prepare the Demo

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

2. Open a serial terminal on PC for JLink 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

The following message shows in the terminal if the example runs successfully.

Press any key to start the example
Tickless Demo example
Press or turn on SWx to wake up the CPU

Tick count :
0
5000
10000
CPU woken up by external interrupt
15000
20000
25000