Overview
========
The DMA linked example is a simple demonstration program that uses the SDK software.
It executes linked transfer(ping pong case) from the source buffer to destination buffer using the SDK DMA drivers.

Two descriptors are used,  A is linked to B, B is linked to A.

A------>B------->
^               |
|               |
---------<-------

The purpose of this example is to show how to use the DMA and to provide a simple example for
debugging and further development.

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

Hardware requirements
=====================

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

Prepare the Demo
================
1.  Connect a micro USB cable between the PC host and the CMSIS DAP USB port (P6) 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.  Either press the reset button on your board or launch the debugger in your IDE to begin running the demo.

Running the demo
================
When the example runs successfully, the following message is displayed in the terminal:
~~~~~~~~~~~~~~~~~~~~~
DMA linked transfer example begin.
Destination Buffer:
0	0	0	0	0	0	0	0	0	0	0	0
DMA linked transfer example finish.
Destination Buffer:
1	2	3	4	11	22	33	44	111	222	333	444
~~~~~~~~~~~~~~~~~~~~~
Customization options
=====================

