sir it is also in this site..its the “interface GSM module with pic18f4550 microcontroller“
i don’t know what compiler to use sir..the source code is
//Program to interface GSM Modem with PIC18F4550 Microcontroller
//This code takes four choices as four inputs
//Choice 1 : Test the simple AT Command. //Choice 2 : Find out the IMEI number of the GSM Modem. //Choice 3 : Connect a call to a GSM mobile number. //Choice 4 : Send a text message to a mobile number.
#define FREQ 12000000 #define baud 9600 #define spbrg_value (((FREQ/64)/baud)-1) #define rs LATA.F0 #define rw LATA.F1 #define en LATA.F2 #define lcdport LATB
void tx_data(unsigned char); unsigned char rx_data(); void lcd_ini(); void lcdcmd(unsigned char); void lcddata(unsigned char); void gsm_cmd(unsigned char *); void output(void);
unsigned char value=0; int i=0,j,k,temp,flag,choice; unsigned char *starting_text=”Enter choice=”; unsigned char *dial_text=”Dialing…”; unsigned char *at_cmd=”AT”; unsigned char *imei_cmd=”AT+GSN”; unsigned char *call_cmd=”ATD9xxxxxxxxx;”; // Provide a 10-Digit Mobile Number unsigned char *sms_format=”AT+CMGF=1″; unsigned char *sms_write=”AT+CMGS=”xxxxxxxxxx””; // 10-Digit Mobile Number unsigned char *sms=”Hello”; unsigned char *sms_report=”SMS Sent…”; unsigned char sms_terminate=0x1A; unsigned char enter=0x0D; unsigned char *data;
void main() { TRISB=0; // Set Port B as output port LATB=0; TRISA=0; LATA=0; TRISD=0xFF; LATD=0; SPBRG=spbrg_value; // Fill SPBRG register to set the baud rate RCSTA.SPEN=1; // To activate serial port (Tx and Rx pins) TXSTA.TXEN=1; // Activate Transmissiom RCSTA.CREN=1; // Activate Reception PIE1.RCIE=1; // Enable Reception interrupt INTCON.GIE=1; // Enable Global interrupt INTCON.PEIE=1; // Enable Peripheral interrupt lcd_ini(); while(1) { k=0; lcdcmd(0x80); while(starting_text[k]!=’ ’) { lcddata(starting_text[k]); k++; } //Check inputs
//Choice 1 if(PORTD.F0) { gsm_cmd(at_cmd); output(); Delay_ms(1000); }
//Choice 2 if(PORTD.F1) { gsm_cmd(imei_cmd); output(); Delay_ms(1000); } //Choice 3 if(PORTD.F2) { gsm_cmd(call_cmd); output(); Delay_ms(1000); }
//Choice 4 if(PORTD.F3) { gsm_cmd(sms_format); output(); Delay_ms(1000);
gsm_cmd(sms_write); output(); Delay_ms(1000);
gsm_cmd(sms); output(); tx_data(0x1A); Delay_ms(1000); }
}
}
void gsm_cmd(unsigned char *string) { i=0;j=0; while(string!=’ ’) { temp=0; if(string==0x5C) // Not to send ” cahracter i++; tx_data(string); // Send by serial communication i++; while(temp!=1); } temp=0; tx_data(enter); // Send ASCII code for ‘Enter’ key while(temp!=1); }
void output(void) // To print data on LCD { lcdcmd(0x01); i=-1;flag=0; while(i<j) { if(flag>1) { flag=0; Delay_ms(500); lcdcmd(0x01); lcdcmd(0x80); } if(data==0x0A) // This condition is to avoid double Enter
// during execution of a command { flag++; lcdcmd(0xc0); } if(data==’>’||data=='”‘) // Not to print this character { i++; lcdcmd(0xc0); } if(data!=0x0D&&data!=0x0A&&data!=0x1A) // Condition to print the data // except ‘Enter’,’New line’ and ‘Submit’ { lcddata(data); i++; } else i++; Delay_ms(300); } lcdcmd(0x01); }
void tx_data(unsigned char serial_data) // Transmit data function { TXREG=serial_data; while(PIR1.TXIF==0); }
void interrupt() { data[j]=RCREG; // Store the data into array when Reception interrupt occurs value=RCREG; j++; temp=1; }
void lcd_ini() { lcdcmd(0x38); // Configure the LCD in 8-bit mode, 2 line and 5×7 font lcdcmd(0x0C); // Display On and Cursor Off lcdcmd(0x01); // Clear display screen lcdcmd(0x06); // Increment cursor lcdcmd(0x80); // Set cursor position to 1st line, 1st column }
void lcdcmd(unsigned char cmdout) { lcdport=cmdout; //Send command to lcdport=PORTB rs=0; rw=0; en=1; Delay_ms(10); en=0; }
void lcddata(unsigned char dataout) { lcdport=dataout; //Send data to lcdport=PORTB rs=1; rw=0; en=1; Delay_ms(10); en=0; }
tnx sir