nawakeupirq: Wake up on an external interrupt

This example is to demonstrate how to generate external interrupt using 
on board wakeup button.

Supported platforms:
====================
Connectcore9p9215_a jump start kit

How it works:
=============
Pressing wakeup push button will generate external interrupt 2 which 
in turn toggle user LED 1 and user LED 2.

Local Files:
============
root.c
naftpapp.c
appconf.h

Required libraries:
===================
libbsp.a
libtx.a
libfilesys.a
libposix.a
libflash.a
libftpsvr.a
libtelnsvr.a
libaddp.a
libbsp.a
libtcpip.a
libsntp.a
libcrypto.a
libwpa.a
 
The application uses the following files located in the
netos\src\linkerScripts directory.  These files are generated
when the BSP is built.

bootldr.dat     bootloader configuration file used to generate the
                file image.bin.  It controls the information placed
                in the bootloader header of the image.

image.ldr       GNU linker script used to build an image that can
                be debugged and used with the bootloader.
                
customize.ldr   Customizable GNU linker script

   