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How can I use 8051 to control a GSM modem
I am doing a project on Controling and Monitoring System using GSM Modem. Can I use Keil and 8051 to do make such a system?
"One thing to bear in mind is that setting-up the hardware for basic comms is one thing - writing a driver to control a modern GSM/GPRS modem should not be underestimated."
Absolutely!
Serial coms is serial coms, whether you're talking to a PSTN modem, a GSM modem, another microcontroller, a terminal, or a PC. So the first step is obviously to get serial coms working!
Once you have basic serial coms working, then you can start sending commands to the modem, and receiving responses from the modem. Don't forget that you may receive unsolicited "responses" from the modem...
Obviously, you will have to read the modem's Manual to determine what commands are supported, and what responses may be generated.
As to actually using the modem, you have 3 possible methods of communication: 1. SMS (Text Messages); 2. Data Call; 3. GPRS.
With no details of your application, requirements, and constraints it is impossible to even guess at which may be more suitable...
An important point to note is that the decision is not entirely technical: you also need to consider the available tariffs - as these might render a technically "elegant" solution financially unviable!