Hardware requirements

  • Type-C USB cable

  • FRDM-MCXA156 board

  • Personal Computer

Board settings

LPSPI:

       MASTER(SPI0)      connect to        SLAVE(SPI1)
Pin Name   Board Location     Pin Name    Board Location
SOUT       J6-6                SIN       J3-9
SIN        J6-5                SOUT      J3-11
SCK        J6-4                SCK       J3-7
PCS0       J6-3                PCS1      J3-5
GND        J6-8                GND       J6-8

Prepare the Demo

  1. Connect a Type-C USB cable between the host PC and the MCU-Link USB port on the target 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. Either press the reset button on your board or launch the debugger in your IDE to begin running the demo.

Running the demo

The following lines are printed to the serial terminal when the demo program is executed.

LPSPI CMSIS driver board to board interrupt example.

 Slave example is running...
This is LPSPI_SlaveSignalEvent_t
Slave receive data from master has completed!
This is LPSPI_SlaveSignalEvent_t
Slave transmit data to master has completed!

 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...