Hardware requirements

  • Micro USB cable

  • LPCXpresso51U68 board

  • Personal Computer

Board settings

Populate jumper JP3. Connect SPI5 pins to SPI3 pins:

Master - SPI5                 CONNECTS TO      Slave - SPI3
Pin Name   Board Location                      Pin Name  Board Location
MISO       J1 pin 11                           MISO      J4 pin 3
MOSI       J1 pin 13                           MOSI      J4 pin 2
SCK        J2 pin 8                            SCK       J4 pin 4
PCS2       J1 pin 15                           PCS2      J4 pin 7

Prepare the Demo

  1. Connect a micro USB cable between the PC host and the CMSIS DAP USB port (J6) on the board

  2. Open a serial terminal with the following settings (See Appendix A in Getting started guide for description how to determine serial port number):

    • 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 CMSIS DAP terminal like:

SPI one board interrupt example started!

SPI transfer finished!