This project demonstrates a PPP client demo that runs the following hardware platform:
- STM32F4-Discovery evaluation board (STMicroelectronics P/N STM32F407G-DISC1)
- STM32F4 Discovery Shield (Mikroelectronika P/N MIKROE-1481)
- GSM Click board (Mikroelectronika PN/ MIKROE-1298)

The GCM Click board is a GSM/GPRS modem featuring the Telit GL865-QUAD module.

Instructions to run the demo:

- Edit the src/modem.c file and customize the PIN code and the APN to be used (APP_PPP_PIN_CODE
	and APP_PPP_APN parameters). If no PIN is required, then the APP_PPP_PIN_CODE definition
	can be left commented-out
- Compile the project and run a debug session.
- Connect a terminal (115200 bauds, no parity, no flow control) to the USB/UART connector of
	the STM32F4 Discovery Shield to output log messages
- Press the user button to establish a PPP session and download	the content of a test Web
	page from the Internet (http://www.oryx-embedded.com/test.php)
- The first time, the user button is pressed, the modem is powered up and configured. The power-up
	sequence takes roughly 10 seconds

