##GPRSInterface

• GPRS(General packet radio service), is a packet oriented mobile data service on the 2G and 3G cellular communication system's global system for mobile communications (GSM).
  
• the GPRSInterface is a library to use GPRS like Ethernet or WiFi, you can have a try with a GPRS module(ex. Seeed_GPRS_Sheild)
  

Usage:

The folowing we will introduce some function which is used very normal.

Initialization

At the very beginning, we should had it initialized. You can use this function :

GPRSInterface gprs(PIN_TX,PIN_RX,19200,"cmnet",NULL,NULL)
gprs.init();

PIN_TX and PIN_RX is the serial communication pin with GPRS module
19200 is the baud rate of serial communication
"cmnet" is the APN for GPRS service
the first NULL is the user name for APN
the second NULL is the password for APN

Connect the Internet

you can connect the Internet as the following :

gprs.connect();

Get IP Address

GPRS will get IP address by using DHCP, if connect success, you can get the IP address as following :

gprs.getIPAddress();

Send/Recv Data

you can create a TCPSocketConnection instance to send/receive data now :

TCPSocketConnection sock;
sock.connect(HOST, PORT);
sock.send(DATA,LENGTH);
sock.receive(BUFFER,LENGTH);

CLOSE Socket

sock.close();

Disconnect

gprs.disconnect();

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This software is written by lawliet zou () for Seeed Technology Inc. and is licensed under The MIT License. Check License.txt/LICENSE for the details of MIT license.

Contributing to this software is warmly welcomed. You can do this basically by
forking, committing modifications and then pulling requests (follow the links above
for operating guide). Adding change log and your contact into file header is encouraged.
Thanks for your contribution.

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