Controller not able to collect response from GSM Modem

Hello all, I am trying to send Command from 89S52 Controller to SIM900 GSM Modem when i am sending command as "AT" in response my Receive buffer is able to receive all bytes and code is working...
Controller not able to collect response from GSM Modem

Hello all, I am trying to send Command from 89S52 Controller to SIM900 GSM Modem when i am sending command as "AT" in response my Receive buffer is able to receive all bytes and code is working...
how to control gsm modem using microcontroller 89s52

hi...i m using 89s52 microcontroller to control the gsm modem.i m using simcom 300 gsm modem with RS232 port. My problem is that i don't knw how to control the gsm modem using microcontroller....although...
how to control gsm modem using microcontroller 89s52

hi...i m using 89s52 microcontroller to control the gsm modem.i m using simcom 300 gsm modem with RS232 port. My problem is that i don't knw how to control the gsm modem using microcontroller....although...
gsm module sim900 HTTP connection

hello, dear I have a gsm module sim 900 and I want to connect it with HTTP protocol and need to send a massage to a website and I use embedded C program. and also I have AT89S52 micro-controller so...