Hardware requirements

  • Mini/micro USB cable

  • LPCXpresso55S16 board

  • Personal Computer

Board settings

The jumper setting: Default jumpers configuration does not work, you will need to add JP20 and JP21 (JP22 optional for ADC use)

Prepare the Demo

  1. Connect a micro USB cable between the PC host and the CMSIS DAP USB port (J1) 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.

Running the demo

After the board is flashed the Tera Term will print message on terminal.

Example output:

 GPIO Driver example

 The LED is taking turns to shine.

 Standard port read: 40290

 Masked port read: 40000

 Port state: 64001804

 Port state: 64001804

 Port state: 64001804

 Port state: 64001804
 ...

  • When press sw1 the LED GREEN will turn to shine