Hardware requirements

Mini/micro USB cable
LPCLPCXpresso54S018 board
Personal Computer

Board settings

No special settings are required.

Prepare the Demo

Connect a USB cable between the host PC and the OpenSDA USB port 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.
Launch the debugger in your IDE to begin running the demo.

Running the demo

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.
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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 LPC54S018.

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.
When the example runs successfully, the following message is displayed in the terminal:

SHELL (build: Jun 19 2020)
Copyright 2020 NXP

SHELL>> help

"help": Lists all the registered commands

"led arg1 arg2":
 Usage:
    arg1: 1|2|3|4...            Led index
    arg2: on|off                Led status

"exit": Exit program

SHELL>> led 1 on
SHELL>> led 1 off
SHELL>> led 2 on
SHELL>> led 2 off
SHELL>> led 3 on
SHELL>> led 3 off
SHELL>> led 4 on
LED index is wrongs
SHELL>>

Note: 1,The shell information “SHELL (build: Jun 19 2020)” may be different, which depends on the compile date. 2,If the command ‘led x on’/’led x off’ run success, the corresponding LEDx on board will turn on/turn off. But the valid “Led index” may be different, which depends how many LEDs are available on the specific board. For example: one board only have LED1/LED2, then shell demo will print “LED index is wrong” for all led index bigger than 2.