Hardware requirements

Mini/micro USB cable
MIMXRT1180-EVK board
Personal Computer

Board settings

SPI one board: Transfer data from one board instance to another board’s instance. SPI3 pins are connected with SPI3 pins of another board

INSTANCE(LPSPI3)     CONNECTS TO    INSTANCE(LPSPI3)
Pin Name   Board Location   Pin Name   Board Location
SOUT       J44-8            SIN        J44-10
SIN        J44-10           SOUT       J44-8
SCK        J44-12           SCK        J44-12
PCS0       J44-6            PCS0       J44-6 
GND        J44-14           GND        J44-14

Prepare the Demo

Connect a mini USB cable between the PC host and the OpenSDA USB port on the board.
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
Download the program to the target board.
Reset the SoC and run the project.

Running the demo

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

LPSPI board to board edma example.
This example use one board as master and another as slave.
Master and slave uses EDMA way. Slave should start first.
Please make sure you make the correct line connection. Basically, the connection is:
LPSPI_master --  LPSPI_slave
   CLK       --    CLK
   PCS       --    PCS
   SOUT      --    SIN
   SIN       --    SOUT
   GND       --    GND

 Master transmit:

  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
This is LPSPI master edma transfer completed callback.

This is LPSPI master edma transfer completed callback.

LPSPI transfer all data matched!

 Master received:

  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

 Press any key to run again