Hardware requirements

  • Mini/micro USB cable

  • EVKB-MIMXRT1050 board

  • Personal Computer

Board settings

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

       MASTER           connect to      SLAVE
Pin Name   Board Location     Pin Name    Board Location
SOUT       SW5-2                SIN       SW5-3
SIN        SW5-3                SOUT      SW5-2
SCK        SW5-1                SCK       SW5-1
PCS0       SW5-4                PCS0      SW5-4

Note: Please start up slave example first then connect PCS0(SW5-4) and start up master example, otherwise the high level signal from master board will affect the boot of slave board.

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

You can see the similar message shows following in the terminal if the example runs successfully.

FlexIO SPI interrupt example
Master Start...

Master runs successfully!