Hardware requirements

Board settings

No special settings are required.

Connect a micro USB cable between the host PC and the LPC-Link USB port (J8) on the target board.
Open a serial terminal with the following settings:
- 115200 baud rate
- 8 data bits
- No parity
- One stop bit
- No flow control
Download the program to the target board.

This demo is an external flash plain load demo, ROM will copy image in external flash to SRAMX to run:

Build the demo to generate a bin file. Note: If need to generate bin file using MCUXpresso IDE, below steps need to be followed: Set in example Properties->C/C++ Build->Settings->Build steps->Post-build steps->Edit enbable arm-none-eabi-objcopy -v -O binary “&{BuildArtifactFileName}” “&{BuildArtifactFileBaseName}.bin”
```
  This plainload example linked the vector table to 0x00000000, but program to external flash 0x10000000.
```
Program the bin file to external on board flash via SEGGER J-FLASH Lite(V6.22 or higher):

a. Open SEGGER J-FLASH Lite, select device LPC54S018M.

b. Click the ‘Erase Chip’ to erase the extrenal flash.(if can not success, press SW4 button and reset the board, and try to erase again)

c. Select the bin data file, set the ‘.bin/Erase Start’ address to 0x10000000, then click ‘Program Device’ Note: Please use above way to program the binary file built by armgcc tool chain to external flash. For IAR, KEIL, MCUXpresso IDE, you can use the IDE tool to program the external flash.
Launch the debugger in your IDE to begin running the demo.

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

Group GPIO input interrupt example

GINT0 and GINT1 events are configured

Press corresponding switches to generate events

This example configures “Group GPIO interrupt 0”” to be invoked when SW2 switch is pressed by the user. The interrupt callback prints “GINT0 event detected” message on the serial terminal. “”Group GPIO interrupt 1”” is configured to be invoked when both the switches SW3 and SW4 are pressed at the same time. The interrupt callback prints “GINT1 event detected” message on the serial terminal.