Hardware requirements

• Micro USB cable

• MIMXRT685-AUD-EVK board

• Personal Computer

Board settings

Make sure the JP41 2-3 is connected.

Connect SPI master on board to SPI slave on other board.

    Master_board(SPI5)           Slave_board(SPI5)
Pin Name   Board Location     Pin Name   Board Location
MISO       J28 pin 5          MISO       J28 pin 5
MOSI       J28 pin 4          MOSI       J28 pin 4
SCK        J28 pin 6          SCK        J28 pin 6
PCS0       J28 pin 3          PCS0       J28 pin 3
GND        J28 pin 7          GND        J28 pin 7

Prepare the Demo

1. Connect a micro USB cable between the PC host and the CMSIS DAP USB port (J5) 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. Launch the debugger in your IDE to begin running the demo.

Running the demo

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

SPI board to board interrupt slave example started!

SPI transfer finished!