Hardware requirements

• Mini/micro USB cable

• FRDM-K32L2B board

• USB-to-COM external

• Personal Computer

Board settings

The flexio_uart_polling example is requires connecting the FLEXIO pins with the USB2COM pins The connection should be set as following:

• J2-6, TX of USB2COM connected

• J2-12, RX of USB2COM connected

• J2-14, Ground of USB2COM connected

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 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 UART Terminal port which connected to the USB2COM like:

Flexio uart polling example
Board will send back received characters