Overview
========
The Hello World demo application provides a sanity check for the new SDK build environments and board bring up. The Hello
World demo prints the "Hello World" string to the terminal using the SDK UART drivers. The purpose of this demo is to
show how to use the UART, and to provide a simple project for debugging and further development.

Toolchain supported
===================
- Keil MDK  5.27
- GCC ARM Embedded  8.2.1
- MCUXpresso  11.0.0
- IAR embedded Workbench  8.32.3

Hardware requirements
=====================
- Two Micro USB cables
- LPCXpresso55s69 board
- Personal Computer

Board settings
==============
No special settings are required.

Prepare the Demo
================
1.  Connect a USB cable between the host PC and the OpenSDA USB port on the target board for downloading
    the program and supply power for the board, connect another USB cable between host PC and USB port
	on the target board.
2.  Download the program to the target board.
3.  Either press the reset button on your board or launch the debugger in your IDE to begin running the demo.
4.  Open a serial terminal(like putty) to communicate with the board via virtual com.

Running the demo
================
The log below shows the output of the hello world demo in the terminal window:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
hello world.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The debug console virtual com will echo back the received characters.
Customization options
=====================

