13-12-2012, 06:47 PM
INTERFACE GSM module WITH MICRO-CONTROLLER (AT89C51) USIng pc and lcd
[attachment=43705]
INTRODUCTION
This project is an extension of interfacing microcontroller
with Hyper Terminal and GSM module .
The previous project explained a way to interface a GSM
module with 8051 microcontroller where the information
response and result codes received by the controller were
sent back to computer to display them at Hyper Tterminal.
In this project, the same output is displayed on a in 16*2 LCD
interface.
COMPUTER
The data to be sent are typed at computer
transmitted serially through the transmit pin (Tx)
of RS 232 interface.
The GSM modem need AT command are sent
by the computer.
MICROCONTROLLER
AT89C52 microcontroller is used. It is an
8-bit microcontroller.
The microcontroller received data from
GSM module and send it toe LCD.
CIRCUIT EXPLANATION
As shown in circuit diagram, the characters typed at Hyper
Terminal get transmitted serially through the transmitt pin (TX)
of RS232 interface to the GSM module.
The modem needs AT Commands for interacting with controller
which are communicate through serial communication. The
AT command are sent by the computer to the modem.
The modem sends back an information response. The data
transmitted by GSM modem is received by MAX 232 through input
pin 12.
[attachment=43705]
INTRODUCTION
This project is an extension of interfacing microcontroller
with Hyper Terminal and GSM module .
The previous project explained a way to interface a GSM
module with 8051 microcontroller where the information
response and result codes received by the controller were
sent back to computer to display them at Hyper Tterminal.
In this project, the same output is displayed on a in 16*2 LCD
interface.
COMPUTER
The data to be sent are typed at computer
transmitted serially through the transmit pin (Tx)
of RS 232 interface.
The GSM modem need AT command are sent
by the computer.
MICROCONTROLLER
AT89C52 microcontroller is used. It is an
8-bit microcontroller.
The microcontroller received data from
GSM module and send it toe LCD.
CIRCUIT EXPLANATION
As shown in circuit diagram, the characters typed at Hyper
Terminal get transmitted serially through the transmitt pin (TX)
of RS232 interface to the GSM module.
The modem needs AT Commands for interacting with controller
which are communicate through serial communication. The
AT command are sent by the computer to the modem.
The modem sends back an information response. The data
transmitted by GSM modem is received by MAX 232 through input
pin 12.