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    Hello I have connected SIM 900 (GSM Modem) with 89S52 Controller, via RS232 Communication. If I send AT from controller to Modem , it is replying with AT OK but my controller is just able to receive...
  • Using Microcontroller to control a GSM modem
    Hi all, I'm using a eZ430-F2103 microcontroller to control a GSM modem. My problem is I don't know what is supposed to happen when you send an ASCII character to GSM modem from the microcontroller...
  • GSM modem
    to transmit a data from a mobile and receive it in the GSM modem and transmit that do we need another SIM or how the data is stored and transmitted
  • not getting messages from gsm modem
    i am using atmel at89s52 and a sim 300 gsm modem.i just want to sent a message to my cell phone.i am new to microcontroller programming.here is my code- #include<reg51.h> void serialcomm() { TMOD...
  • Problem in GSM modem response handling using interrupt method of LPC2148 UART0
    Actually i am getting problem while trying to receive the incoming sms from gsm modem to micro controller controller-lpc2148 Uart- UART0 //Cpu clock-60 Mhz (using PLL 12Mhz*5=60Mhz) VPB -15mhz...