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GSM modem

 
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khawer102



Joined: 14 Mar 2006
Posts: 9
Location: Pakistan

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GSM modem
PostPosted: Thu Mar 16, 2006 3:04 pm     Reply with quote
I know this topic is already been discussed a lot on this forum. But i will be grateful if people can spare some time to go through my problem.

I am using a PIC 18F420 to control my GSM modem. I have been able to send messages succesfully while using a hyperterminal.

I was also able to connect my PIC to hyperterminal through serial port and using fprintf statements i was able to display all the command including the ctrl z to send message on the hyperterminal. but when i connect my modem to PIC it does not send any messages.

can anybody tell me whats wrong with my modem
johanan



Joined: 28 Nov 2003
Posts: 9

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GSM - What GSM module are you using?
PostPosted: Sun Mar 19, 2006 1:51 am     Reply with quote
I assume you are using text mode (CMGF=1),
so you have to wait for the '>', then wait 100ms, then send your data.
This is what you do with hyperterminal (you wait manually...)
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