Hardware requirements

  • Micro USB cable

  • Two FRDM-KE17Z512 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

Master Board(SPI0)     CONNECTS TO      Slave Board(SPI0)
Pin Name   Board Location     Pin Name  Board Location
SOUT        J2 pin 8            SIN       J2 pin 10
SCK         J2 pin 12           SCK       J2 pin 12
PCS2        J2 pin 6            PCS2      J2 pin 6
GND         J2 pin 14           GND       J2 pin 14

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 3-wire 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  
   GND       --    GND 

 Master transmit:

 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F 0x10
 0x11 0x12 0x13 0x14 0x15 0x16 0x17 0x18 0x19 0x1A 0x1B 0x1C 0x1D 0x1E 0x1F 0x20
 0x21 0x22 0x23 0x24 0x25 0x26 0x27 0x28 0x29 0x2A 0x2B 0x2C 0x2D 0x2E 0x2F 0x30
 0x31 0x32 0x33 0x34 0x35 0x36 0x37 0x38 0x39 0x3A 0x3B 0x3C 0x3D 0x3E 0x3F 0x40

 This is LPSPI master edma transfer completed callback. 

Master transmit data complete! Please input any character to continue!
Before you input any character, please make sure the slave board is ready to transmit data.

 This is LPSPI master edma transfer completed callback. 

LPSPI transfer all data matched! 

 Master received:

 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F 0x10
 0x11 0x12 0x13 0x14 0x15 0x16 0x17 0x18 0x19 0x1A 0x1B 0x1C 0x1D 0x1E 0x1F 0x20
 0x21 0x22 0x23 0x24 0x25 0x26 0x27 0x28 0x29 0x2A 0x2B 0x2C 0x2D 0x2E 0x2F 0x30
 0x31 0x32 0x33 0x34 0x35 0x36 0x37 0x38 0x39 0x3A 0x3B 0x3C 0x3D 0x3E 0x3F 0x40

Press any key to run again