Hardware requirements

• Micro USB cable

• Two LPCXpresso824MAX boards

• Personal Computer

Board settings

I2C one board:

• Transfer data from MASTER_BOARD to SLAVE_BOARD of I2C interface, I2C0 pins of MASTER_BOARD are connected with I2C0 pins of SLAVE_BOARD

MASTER_BOARD        CONNECTS TO         SLAVE_BOARD
Pin Name   Board Location     Pin Name   Board Location
SCL        J1-1               SCL        J1-1
SDA        J1-2               SDA        J1-2
GND        J1-4               GND        J1-4

Prepare the Demo

1. Connect a micro USB cable between the PC host and the LPC-Link USB port (J3) on the board.

2. Open a serial terminal on PC for JLink serial device with these settings:

   • 9600 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 message shows in the terminal if the example runs successfully.

I2C board2board interrupt example -- Master transfer.
Master will send 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

Receive sent data from slave :
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 I2C example .