Hardware requirements
Mini USB cable
TWR-KM34Z75M board
Personal Computer
Board settings
UART one board: Using instance 1 of UART interface to transfer data to itself. TX pin is connected with RX pin.
UART1 CONNECTS TO UART1
Pin Name Board Location Pin Name Board Location
TXD J25-9 RXD J25-8
Prepare the Demo
Connect a USB cable between the host PC and the OpenSDA USB port on the target board.
Open a serial terminal with the following settings:
115200 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program to the target board.
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:
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!