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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?
Thanks your reply.
Before I start working on the 8051, I start trying AT Command by using Hyperterminal and IRDA in computer. I have successfully control the mobile phone dialing phone number and answer any call. However, I fail to send SMS. I don't know the reason. It's trouble me a lot.....I am sure I have use the AT command correctly. That stop me from moving the AT command into the 8051. Could you help provide some reference link on this??? Thanks
Have you read your modem's AT Commands Manual? What did it tell you?
See also: www.3gpp.org/.../0705.htm
pls help me out.....
"help me out..."
Just look for a door marked "Exit"
Ha..ha...ha...that was very funny Andy
you need enter the phine number and messamge you want to send and than press ctrl ^z which is the char putchar (26); or
putchar (0x26);
"you need enter the phine number and messamge you want to send and than press ctrl ^z"
And you need to form all that into the appropriate AT Command - as described in the links already given.
"putchar (26); or putchar (0x26);"
They can't both be correct, can they?! Either the hex is right and the decimal is wrong, or vice-versa
It is left as an exercise for the student to look it up in an ASCII chart and determine which is the correct code...