Hardware requirements

  • Micro USB cable

  • Two TWR-KM35Z75M board

  • Personal Computer

  • Two Elevator Tower

Board settings

SPI one board:

  • Transfer data from MASTER_BOARD to SLAVE_BOARD of SPI interface, SPI0 pins of MASTER_BOARD are connected with SPI0 pins of SLAVE_BOARD

MASTER_BOARD        CONNECTS TO          SLAVE_BOARD
Pin Name   Board Location     Pin Name   Board Location
MOSI       B-10               MOSI       B-10
MISO       B-11               MISO       B-11
SCK        B-7                SCK        B-7
PCS0       B-9                PCS0       B-9
GND        B-2                GND        B-2

Prepare the Demo

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

  2. Open a serial terminal with the following 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 example runs successfully, the following message is displayed in the terminal:

SPI CMSIS driver board to board interrupt example.
This example use one board as master and another as slave.
Master and slave uses interrupt way. Slave should start first. 
Please make sure you make the correct line connection. Basically, the connection is: 
SPI_master -- SPI_slave   
   CLK      --    CLK  
   PCS      --    PCS 
   SOUT     --    SIN  
   SIN      --    SOUT 
   GND      --    GND 

 Master transmit:

  0  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
 
SPI transfer all data matched! 

 Master received:

  0  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