Overview
========
The uart_functioncal_interrupt example shows how to use uart driver functional
API to receive data with interrupt method:

In this example, one uart instance connect to PC through uart, the board will
send back all characters that PC send to the board.
Hardware requirements
=====================
- Micro USB cable
- LPCXpresso51U68 board
- Personal Computer

Board settings
==============
No special is needed.

Prepare the Demo
================
1.  Connect a micro USB cable between the PC host and the CMSIS DAP USB port (J7) 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:

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Usart functional interrupt example
Board receives characters then sends them out
Now please input:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Toolchain supported
===================
- IAR embedded Workbench  8.32.1
- Keil MDK  5.26
- MCUXpresso 10.3.0
- GCC ARM Embedded  7.3.1

