Hardware requirements

  • Type-C USB cable

  • MCX-W71-EVK Board

  • Personal Computer

Board settings

Using instance 0 of LPUART interface to transfer data to itself. TX pin is connected with RX pin.

LPUART0 CONNECTS TO LPUART0 Pin Name Board Location Pin Name Board Location TXD J13-3 RXD J13-4

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. Reset the SoC and run the project.

Running the demo

When the demo runs successfully, the log would be seen on the OpenSDA terminal like:

LPUART 9-bit mode example begins
LPUART is configured with address, only data sent to itself after matched address can be received
LPUART will send first piece of data out:

0x 0  0x 1  0x 2  0x 3  0x 4  0x 5  0x 6  0x 7
0x 8  0x 9  0x a  0x b  0x c  0x d  0x e  0x f

LPUART will address itself
LPUART will send the other piece of data out:

0x10  0x11  0x12  0x13  0x14  0x15  0x16  0x17
0x18  0x19  0x1a  0x1b  0x1c  0x1d  0x1e  0x1f

LPUART received data:

0x10  0x11  0x12  0x13  0x14  0x15  0x16  0x17
0x18  0x19  0x1a  0x1b  0x1c  0x1d  0x1e  0x1f

All data matches!