GSM interface with 8051 microcontroller

hi guys
we are doing a project, in which a small part include interfacing 8051 microcontroller with GSM modem, we are trying to do this "Keil Assembly C". but till now are not able to anything on this.

Can anybody help us regarding, how to send AT commands using assembly c, specially how to send a sms and sending back the reply to an sms.

plz contect swi_nitj@yahoo.com

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  • I don't really know what you mean by "assembly C", but look at all available example code. Assembler is one thing - writing mnemonics of the actual processor instructions. C on the other hand is a low to medium-level programming language.

    First you need to fix support for a serial-port. There is a lot of sample programs available. Both with the evaluation kit you can download from Keil, and if you just google.

    When that is done, you send the AT commands - and receive the answers - in exactly the same way as if the program was running on a PC.

    If you are going to use a GSM module, there is normally development kits to buy. They have USB or RS232 ports for connecting to a PC. Then you can use a normal terminal program to try the AT commands.

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  • I don't really know what you mean by "assembly C", but look at all available example code. Assembler is one thing - writing mnemonics of the actual processor instructions. C on the other hand is a low to medium-level programming language.

    First you need to fix support for a serial-port. There is a lot of sample programs available. Both with the evaluation kit you can download from Keil, and if you just google.

    When that is done, you send the AT commands - and receive the answers - in exactly the same way as if the program was running on a PC.

    If you are going to use a GSM module, there is normally development kits to buy. They have USB or RS232 ports for connecting to a PC. Then you can use a normal terminal program to try the AT commands.

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