Hardware requirements

  • USB-C cable

  • Two FRDM-MCXE247 boards

  • Personal Computer

Board settings

SPI two boards: Transfer data from one board instance to another board’s instance. SPI0 pins are connected with SPI0 pins of another board

INSTANCE0(SPI0)     CONNECTS TO         INSTANCE0(SPI0)
Pin Name   Board Location     Pin Name  Board Location
SOUT        J6 pin 6            SIN       J6 pin 5
SIN         J6 pin 5            SOUT      J6 pin 6
SCK         J6 pin 4            SCK       J6 pin 4
PCS2        J6 pin 3            PCS2      J6 pin 3
GND         J6 pin 8            GND       J6 pin 8

Prepare the Demo

  1. Connect a USB cable between the PC host and the MCU-LINK USB port on the board.

  2. Open a serial terminal on PC for MCU-LINK 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. Reset the SoC and run the project.

Running the demo

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

LPSPI board to board edma example.

 Slave example is running...
This is LPSPI slave edma transfer completed callback. 

This is LPSPI slave edma transfer completed callback. 


 Slave receive:
      1  2  3  4  5  6  7  8  9  A  B  C  D  E  F 10
     11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20
     21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30
     31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 40

 Slave example is running...