![2/28/2014 Interface GSM with 8051 Microcontroller (AT89C51)
http://www.engineersgarage.com/microcontroller/8051projects/interfacing-gsm-8051-microcontroller-circuit-code 1/4
Arduino Projects | Raspberry Pi | Electronic Circuits | AVR | PIC | 8051 |
Electronic Projects | How To
Interfacing GSM Module with 8051
microcontroller (AT89C51) without
using PC
//ProgramtoInterfaceGSMModulewith8051microcontroller(AT89C51)withoutusin
#include<reg51.h>
#defineportP1
#definedataportP2 //DataportforLCD
sbitrs=port^2;
sbitrw=port^3;
sbiten=port^4;
intcount,i;
unsignedcharcheck,str[15];
bitcheck_space;
voidinit_serial() //Initializeserialport
{
TMOD=0x20; //Mode2
TH1=0xfd; //9600baud
SCON=0x50; //Serialmode=1,8-Bitdata,1Stopbit,1
TR1=1; //Starttimer
}
voiddelay(unsignedintmsec) //Functionfordelay
{
inti,j;
for(i=0;i<msec;i++)
for(j=0;j<1275;j++);
}
voidlcd_cmd(unsignedcharitem) //FunctiontosendcommandonLCD
{
MC076
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![2/28/2014 Interface GSM with 8051 Microcontroller (AT89C51)
http://www.engineersgarage.com/microcontroller/8051projects/interfacing-gsm-8051-microcontroller-circuit-code 2/4
dataport=item;
rs=0;
rw=0;
en=1;
delay(1);
en=0;
return;
}
voidlcd_data(unsignedcharitem) //Functiontodisplaycharacteron
{
dataport=item;
rs=1;
rw=0;
en=1;
delay(1);
en=0;
return;
}
voidlcd_data_string(unsignedchar*str) //FunctiontodisplaystringonLC
{
inti=0;
while(str[i]!='0')
{
lcd_data(str[i]);
i++;
delay(10);
}
return;
}
voidlcd()
{
lcd_cmd(0x38); //Forusing8-bit
delay(5);
lcd_cmd(0x0F); //Fordisplayonc
delay(5);
lcd_cmd(0x80); //Setthecursoro
delay(5);
}
voidtransmit_data(unsignedcharstr) //Functiontotransmitdatathroughserial
{
SBUF=str; //StoredatainSBUF
while(TI==0); //Waittilldatatransmits
TI=0;
}
voidreceive_data() interrupt4 //FunctiontorecievedataserialyfromRS
{
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![2/28/2014 Interface GSM with 8051 Microcontroller (AT89C51)
http://www.engineersgarage.com/microcontroller/8051projects/interfacing-gsm-8051-microcontroller-circuit-code 3/4
RI=0;
str[++count]=SBUF; //ReadSBUF
}
unsignedcharbyte_check() //Functiontocheckcarraigereturnandne
{
switch(str[0])
{
case0x0a:
{ //Return0x00fornewline
return0x00;
break;
}
case0x0d:
{ //Return0x01forcarriagereturn
return0x01;
break;
}
default:return0x02; //Return0x02forcharactersexcep
}
}
voidmain()
{
lcd(); //Initiali
init_serial(); //Initiali
count=(-1);
delay(500);
lcd_data_string("Ready");
delay(10);
lcd_cmd(0x01);
IE=0x94;
transmit_data('A'); //Transmit'A'to
delay(1);
transmit_data('T'); //Transmit'T'to
delay(1);
transmit_data(0x0d); //Transmitcarriag
delay(50);
while(1)
{
if(count>=0)
{
check=byte_check(); //Checkth
if(check!=0x00)
{
if(check==0x01)
{
if(check_space==1) //Checkpr
{
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![2/28/2014 Interface GSM with 8051 Microcontroller (AT89C51)
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lcd_data(0x20);
check_space=0;
}
}
else
{
lcd_data(str[0]);
check_space=1;
}
}
count--;
for(i=0;i<count;i++) //Shiftthewhole
{
str[i]=str[i+1];
}
}
}
}
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Interface gsm with 8051 microcontroller (at89 c51)
- 1. 2/28/2014 Interface GSM with 8051 Microcontroller (AT89C51) http://www.engineersgarage.com/microcontroller/8051projects/interfacing-gsm-8051-microcontroller-circuit-code 1/4 Arduino Projects | Raspberry Pi | Electronic Circuits | AVR | PIC | 8051 | Electronic Projects | How To Interfacing GSM Module with 8051 microcontroller (AT89C51) without using PC //ProgramtoInterfaceGSMModulewith8051microcontroller(AT89C51)withoutusin #include<reg51.h> #defineportP1 #definedataportP2 //DataportforLCD sbitrs=port^2; sbitrw=port^3; sbiten=port^4; intcount,i; unsignedcharcheck,str[15]; bitcheck_space; voidinit_serial() //Initializeserialport { TMOD=0x20; //Mode2 TH1=0xfd; //9600baud SCON=0x50; //Serialmode=1,8-Bitdata,1Stopbit,1 TR1=1; //Starttimer } voiddelay(unsignedintmsec) //Functionfordelay { inti,j; for(i=0;i<msec;i++) for(j=0;j<1275;j++); } voidlcd_cmd(unsignedcharitem) //FunctiontosendcommandonLCD { MC076 Summary Description Circuit Diagram Code Components AMIT DAS Invite a friend My account Create content Add a Project Log out INSIGHT- DISCOVER HOW GADGETS WORK? Adapter Banana Jack Electric Beard Trimmer HDMI Cable Membrane Keypad Micro Switch Scientific Calculator SMPS Telephone Turbidity Sensor USB Connector ...more EG SPONSORED VIDEO ST Micro ARM Cortex M4 Evaluation Board Follow Follow Home Insight EG Labs Articles Invention Stories Forum Knowledge Base Contribute Advertise Subscribe Contact Us
- 2. 2/28/2014 Interface GSM with 8051 Microcontroller (AT89C51) http://www.engineersgarage.com/microcontroller/8051projects/interfacing-gsm-8051-microcontroller-circuit-code 2/4 dataport=item; rs=0; rw=0; en=1; delay(1); en=0; return; } voidlcd_data(unsignedcharitem) //Functiontodisplaycharacteron { dataport=item; rs=1; rw=0; en=1; delay(1); en=0; return; } voidlcd_data_string(unsignedchar*str) //FunctiontodisplaystringonLC { inti=0; while(str[i]!='0') { lcd_data(str[i]); i++; delay(10); } return; } voidlcd() { lcd_cmd(0x38); //Forusing8-bit delay(5); lcd_cmd(0x0F); //Fordisplayonc delay(5); lcd_cmd(0x80); //Setthecursoro delay(5); } voidtransmit_data(unsignedcharstr) //Functiontotransmitdatathroughserial { SBUF=str; //StoredatainSBUF while(TI==0); //Waittilldatatransmits TI=0; } voidreceive_data() interrupt4 //FunctiontorecievedataserialyfromRS { Access Denied Altera Cyclone V GX FPGA Board Access Denied Intel NUC Core i5 4250U Processor Access Denied IR4312M Power Module Access Denied
- 3. 2/28/2014 Interface GSM with 8051 Microcontroller (AT89C51) http://www.engineersgarage.com/microcontroller/8051projects/interfacing-gsm-8051-microcontroller-circuit-code 3/4 RI=0; str[++count]=SBUF; //ReadSBUF } unsignedcharbyte_check() //Functiontocheckcarraigereturnandne { switch(str[0]) { case0x0a: { //Return0x00fornewline return0x00; break; } case0x0d: { //Return0x01forcarriagereturn return0x01; break; } default:return0x02; //Return0x02forcharactersexcep } } voidmain() { lcd(); //Initiali init_serial(); //Initiali count=(-1); delay(500); lcd_data_string("Ready"); delay(10); lcd_cmd(0x01); IE=0x94; transmit_data('A'); //Transmit'A'to delay(1); transmit_data('T'); //Transmit'T'to delay(1); transmit_data(0x0d); //Transmitcarriag delay(50); while(1) { if(count>=0) { check=byte_check(); //Checkth if(check!=0x00) { if(check==0x01) { if(check_space==1) //Checkpr { FEATURED ARDUINO PROJECTS Getting Started with Arduino LCD Arduino Interfacing Xbee Arduino Interfacing Interface GPS with Arduino Interface SD Card with Arduino Call using Keyboard, GSM & Arduino SPI Module of Arduino ... more arduino projects FEATURED RASPBERRY PI PROJECTS How to Load Ubuntu on Raspberry Pi How to Configure Raspberry Pi How to use Alarm Signal in Raspberry Pi How to Get GUI on Raspberry Pi Playing Snake Game using Raspberry Pi
- 4. 2/28/2014 Interface GSM with 8051 Microcontroller (AT89C51) http://www.engineersgarage.com/microcontroller/8051projects/interfacing-gsm-8051-microcontroller-circuit-code 4/4 YOU ARE HERE Home Top Copyright © 2012 EngineersGarage. All rights reserved. Privacy Policy | Refund Policy | About Us 1 Tweet lcd_data(0x20); check_space=0; } } else { lcd_data(str[0]); check_space=1; } } count--; for(i=0;i<count;i++) //Shiftthewhole { str[i]=str[i+1]; } } } } 64852 reads Circuit Board Assembly thuse.net/Enquire_Now Printed Circuit Boards Assembly Product At Reasonable Price In Pune Game Pad How to Use Raspberry Pi as a Game Server ... more raspberry pi projects