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GPRS with 8051 - interfacing, how to assign IP address


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caniget



Joined: 29 Dec 2007
Posts: 4


Post25 Jun 2009 6:58   

mcs51 gprs


Hi friends,
I am in the urge to interface a GPRS Modem with 8051 Micro controller. I am having lot of doubts regarding this. Any one can please help me....
My doubts are
1) whether i can interface GPRS Modem with 8051 Controllers?
2) How to assign IP address to GPRS Modem and 8051?
any one can briefly explain about the Basic things about the GPRS and 8051 Interfacing.
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Post25 Jun 2009 6:58   

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hanif



Joined: 14 Feb 2007
Posts: 73
Helped: 7
Location: Pakistan


Post25 Jun 2009 8:51   

power up interface for sim340e


Hi,

try this site, it contains schematic , source code , gsm/gprs at commands but for PIC.


http://www.olimex.com/dev/pic-gsm.html

regards
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GSM Man



Joined: 15 Apr 2009
Posts: 357
Helped: 46
Location: New Jersey, USA


Post25 Jun 2009 11:59   

8051 gprs


You can defineately interface a GSM MODEM to a uP - 8051, AVR , pIC, etc. It only requieres a uP with a serial interface. You don't need much processing power to do simple GPRS communications.

The IP address is assigned by netowrk when you connect to it.
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choto



Joined: 08 Jun 2009
Posts: 5


Post02 Jul 2009 5:54   

8051 gprs schematic


hi

can anybody help me in interfcaing uP's serial port with sim340E. I have connected RXD,TXD nad GND signals to uP and powered up using power key but VDD_EXt doesnot give any output signal (it should be 2.93V) and no response for AT commands. Is anyother signal required for proper functionality?
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GSM Man



Joined: 15 Apr 2009
Posts: 357
Helped: 46
Location: New Jersey, USA


Post02 Jul 2009 12:42   

8051 gprs ip


If the "EXT_VDD" pin is not going high you are probably not holding the "PWR_KEY" pin low long enough. YOu should hold this pin low for at least 1-1/2 seconds.


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