Hardware requirements

  • Micro/Mini USB cable

  • TWR-KM34Z75M board

  • Personal Computer

  • USB to Com Converter

Board settings

UART one board: Using instance 1 of UART 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          J14-1                RXD       J16-1

Prepare the Demo

  1. Connect USB to Com Converter between the host PC and the port on the 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. Reset the SoC and run the project.

Running the demo

When the example runs successfully, the log would be seen on the UART Terminal port which connected to the USB2COM like:

UART 9-bit mode example begins
UART is configured with address, only data sent to itself after matched address can be received
UART 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  

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

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

UART received data:

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

All data matches!