Hardware requirements

• Mini/micro USB cable

• MIMXRT1040-EVK board

• Personal Computer

Board settings

Weld 0Ω resistor to R346,R350,R356,R362.

LPSPI:

       MASTER           connect to           MASTER
Pin Name   Board Location     Pin Name    Board Location
SOUT       J17-4              SIN         J17-5

Prepare the Demo

1. Connect a mini USB cable between the PC host and the OpenSDA USB port on the board.

2. Open a serial terminal on PC for OpenSDA 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

When the example runs successfully, you can see the similar information from the terminal as below.

***LPSPI Loopback Demo***

LPSPI loopback test pass!!!