GSM SIM300 using 8051

Discussion in 'Embedded Systems and Microcontrollers' started by mrsatapathy, Sep 10, 2011.

  1. mrsatapathy

    Thread Starter New Member

    Sep 10, 2011
    i am trying a gsm communication through modem and microcontroller.
    my aim is to send the command 'AT' and receive 'OK' or 'ERROR'.

    my part of the code is
    DB 'AT',0dh,0
    ; using zero(0) for end of the string

    i am also using interrupt(i.e. when data from modem comes microcontroller will receive it and display it on LCD) .. but the problem is i am not getting response from modem .. means interrupt does not work ..

    plz help ....