Hardware requirements

• Type-C USB cable

• FRDM-MCXW71 Board

• Personal Computer

Board settings

To make the example work, connections needed to be as follows: Jumper setting:

MASTER(LPI2C1)                connect to        SLAVE(LPI2C1)
Pin Name    Board Location                      Pin Name    Board Location
SDA         J2 pin 2                            SDA         J2 pin 2
SCL         J2 pin 1                            SCL         J2 pin 1

Other jumpers keep default configuration.

Prepare the Demo

1. Connect the micro and mini USB cable between the PC host and the USB ports on the board.

2. Open a serial terminal on PC for the 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 lines are printed to the serial terminal when the demo program is executed.

LPI2C board2board polling example -- Slave transfer.

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


End of LPI2C example .