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AT Commands

 
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eng_haytham
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AT Commands
PostPosted: Sat Mar 31, 2007 9:39 am     Reply with quote
Hello;
I want to use PIC16F877 to send message via a GSM modem.
I don't know how to use AT commands with PIC.
Can any body help me?
Thank you
Ttelmah
Guest
PostPosted: Sun Apr 01, 2007 2:36 am     Reply with quote
'AT' commands, are just text.
You need to get the wiring sorted out to connect the RS232 pins of the PIC to the modem concerned (remember if this is a modem designed to talk to a PC, you will need a hardware buffer/inverter like the MAX232 to give the right voltages), and then just 'printf' the commands, and look for the replies.
Do a search here, there have been plenty of examples posted, including methods of interpreting the responses.

Best Wishes
Foppie



Joined: 16 Sep 2005
Posts: 138
Location: The Netherlands

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PostPosted: Mon Apr 02, 2007 3:30 am     Reply with quote
You could search this forum for posts on this topic.
maybe these links help: link1, link2
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