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GSM modem interfacing with 8051 to make a call

uma latha

Hi,

Am unable to make a call through GSM modem. If try the same command using Hyper terminal its working fine but not able to dial using controller. sending message is working fine from my controller can you help me to suggest what may be the problem. i written code using C.

  • 0

    How do you think that is going to be possible?

    You haven't said what GSM modem you're using.

    We know nothing about your code, and we know nothing about your hardware - other than, "it doesn't work".

  • 0

    You haven't given any indication that you actually know that "sending message is working fine from my controller".

    What debugging have you done? You know you have suitable baudrate? You know you have suitable handshake? You know you have suitable logic levels? You know you have correct mapping of signals? You know the modem can echo back? You know that your microcontroller code is able to both send and receive?