gs.i

remote notice board implementation using GSM source code with schematics are provided

// CodeVisionAVR C Compiler
// (C) 1998-2003 Pavel Haiduc, HP InfoTech S.R.L.

// I/O registers definitions for the ATmega8535(L)


#pragma used+
sfrb TWBR=0;
sfrb TWSR=1;
sfrb TWAR=2;
sfrb TWDR=3;
sfrb ADCL=4;
sfrb ADCH=5;
sfrw ADCW=4;      // 16 bit access
sfrb ADCSRA=6;
sfrb ADMUX=7;
sfrb ACSR=8;
sfrb UBRRL=9;
sfrb UCSRB=0xa;
sfrb UCSRA=0xb;
sfrb UDR=0xc;
sfrb SPCR=0xd;
sfrb SPSR=0xe;
sfrb SPDR=0xf;
sfrb PIND=0x10;
sfrb DDRD=0x11;
sfrb PORTD=0x12;
sfrb PINC=0x13;
sfrb DDRC=0x14;
sfrb PORTC=0x15;
sfrb PINB=0x16;
sfrb DDRB=0x17;
sfrb PORTB=0x18;
sfrb PINA=0x19;
sfrb DDRA=0x1a;
sfrb PORTA=0x1b;
sfrb EECR=0x1c;
sfrb EEDR=0x1d;
sfrb EEARL=0x1e;
sfrb EEARH=0x1f;
sfrw EEAR=0x1e;   // 16 bit access
sfrb UBRRH=0x20;
sfrb UCSRC=0X20;
sfrb WDTCR=0x21;
sfrb ASSR=0x22;
sfrb OCR2=0x23;
sfrb TCNT2=0x24;
sfrb TCCR2=0x25;
sfrb ICR1L=0x26;
sfrb ICR1H=0x27;
sfrb OCR1BL=0x28;
sfrb OCR1BH=0x29;
sfrw OCR1B=0x28;  // 16 bit access
sfrb OCR1AL=0x2a;
sfrb OCR1AH=0x2b;
sfrw OCR1A=0x2a;  // 16 bit access
sfrb TCNT1L=0x2c;
sfrb TCNT1H=0x2d;
sfrw TCNT1=0x2c;  // 16 bit access
sfrb TCCR1B=0x2e;
sfrb TCCR1A=0x2f;
sfrb SFIOR=0x30;
sfrb OSCCAL=0x31;
sfrb OCDR=0x31;
sfrb TCNT0=0x32;
sfrb TCCR0=0x33;
sfrb MCUCSR=0x34;
sfrb MCUCR=0x35;
sfrb TWCR=0x36;
sfrb SPMCR=0x37;
sfrb TIFR=0x38;
sfrb TIMSK=0x39;
sfrb GIFR=0x3a;
sfrb GICR=0x3b;
sfrb OCR0=0X3c;
sfrb SPL=0x3d;
sfrb SPH=0x3e;
sfrb SREG=0x3f;
#pragma used-

// Interrupt vectors definitions



// CodeVisionAVR C Compiler
// (C) 1998-2000 Pavel Haiduc, HP InfoTech S.R.L.


#pragma used+

void delay_us(unsigned int n);
void delay_ms(unsigned int n);

#pragma used-

// CodeVisionAVR C Compiler
// (C) 1998-2005 Pavel Haiduc, HP InfoTech S.R.L.

// Prototypes for string functions



#pragma used+

char *strcat(char *str1,char *str2);
char *strcatf(char *str1,char flash *str2);
char *strchr(char *str,char c);
signed char strcmp(char *str1,char *str2);
signed char strcmpf(char *str1,char flash *str2);
char *strcpy(char *dest,char *src);
char *strcpyf(char *dest,char flash *src);
unsigned char strcspn(char *str,char *set);
unsigned char strcspnf(char *str,char flash *set);
unsigned int strlenf(char flash *str);
char *strncat(char *str1,char *str2,unsigned char n);
char *strncatf(char *str1,char flash *str2,unsigned char n);
signed char strncmp(char *str1,char *str2,unsigned char n);
signed char strncmpf(char *str1,char flash *str2,unsigned char n);
char *strncpy(char *dest,char *src,unsigned char n);
char *strncpyf(char *dest,char flash *src,unsigned char n);
char *strpbrk(char *str,char *set);
char *strpbrkf(char *str,char flash *set);
signed char strpos(char *str,char c);
char *strrchr(char *str,char c);
char *strrpbrk(char *str,char *set);
char *strrpbrkf(char *str,char flash *set);
signed char strrpos(char *str,char c);
char *strstr(char *str1,char *str2);
char *strstrf(char *str1,char flash *str2);
unsigned char strspn(char *str,char *set);
unsigned char strspnf(char *str,char flash *set);
char *strtok(char *str1,char flash *str2);
 

unsigned int strlen(char *str);
void *memccpy(void *dest,void *src,char c,unsigned n);
void *memchr(void *buf,unsigned char c,unsigned n);
signed char memcmp(void *buf1,void *buf2,unsigned n);
signed char memcmpf(void *buf1,void flash *buf2,unsigned n);
void *memcpy(void *dest,void *src,unsigned n);
void *memcpyf(void *dest,void flash *src,unsigned n);
void *memmove(void *dest,void *src,unsigned n);
void *memset(void *buf,unsigned char c,unsigned n);

#pragma used-
#pragma library string.lib





unsigned  int flag_get_sms = 0;
unsigned char loop =0;
unsigned char flag = 0;
unsigned char temp,flag1;
unsigned int msgno;
unsigned char recv_num[50];
unsigned char recv_buf[50];

 void lcd_cwrt(unsigned char ch);

 void init_lcd(void)
{

     lcd_cwrt(0x38);       // 2 lines
     lcd_cwrt(0x0E);       // display on ,cursor blinking
     lcd_cwrt(0x01);       //clear display screen
     lcd_cwrt(0x80);      //force cursor to beginning f 1st ine
     lcd_cwrt(0x06);
     delay_ms(5);
}
void lcd_data(unsigned char ch)
{    
        PORTA.1 = 1;
        PORTC  = ch;
        PORTA.3  = 1;           //E=1;R/W=0;RS=1
        delay_ms(5);                //DELAY
        PORTA.3  = 0;          //E=0;R/W=0;RS=1
        delay_ms(5);
 }               
 void lcd_cwrt(unsigned char ch)
{    
        PORTA.1 = 0;
        PORTC  = ch;
        PORTA.3  = 1;          // //E=1;R/W=0;RS=0
        delay_ms(5);
        PORTA.3  = 0;          //E=0;R/W=0;RS=0
        delay_ms(5);
}
void Clear_Lcd()
{
     lcd_cwrt(0x01); 
     delay_ms(5);
}     
void Lcd_Send_String(unsigned char *str)
 {
        while(*str != '\0')
        {
             lcd_data(*str++);
             delay_ms(2);
        }   
 
 
 }
interrupt[12] void Recive_interrupt(void)
{
	temp = UDR;
	flag1 =1;
}


void init_uart(void)
{
	UCSRB = 0x98;
	UCSRC = 0x06;
	UBRRH = 0x00;
	UBRRL = 0x33;
	SREG  = 0x80;
}



void send_uart1(unsigned char data)
{
	UDR = data;
	while((UCSRA & 0x40) == 0);
	UCSRA = 0;
} 




void get_sms(unsigned int num)
{       
	unsigned char *r="AT+CMGR=";
	
        
        
	while(*r)
	{
		send_uart1(*r++);
		delay_ms(2);
	}

	send_uart1(num);
	delay_ms(2);
	send_uart1(13);
	//delay_ms(2);
	flag1 = 0;
	UCSRA = 0;
	do
	{
	
	

		while(flag1 != 1);
		flag1 = 0;
		UCSRA = 0;
	}while(temp != ',');
	
	loop = 0;
	//UCSR0A = 0;
	
	
	while(flag1 != 1);
	
	while(temp != 10)
	{
		
		recv_num[loop++] = temp;

		flag1 = 0;
		UCSRA = 0;
		while(flag1 != 1);

	}

	flag1 = 0;
	loop = 0;
	UCSRA = 0;
	
	
	while(flag1 != 1);
	
	while(temp != 13)
	{
		
		recv_buf[loop++] = temp;
                //LCD_DAT(recv_buf[loop]);
                //loop++;
		flag1 = 0;
		UCSRA = 0;
		while(flag1 != 1);

	}
	flag1 = 0;
	UCSRA = 0;   
	
	recv_buf[loop] = '\0'; 
	
	flag1 = 0;
	UCSRA = 0;	
	
        flag_get_sms = 1;

}
void wait_for_sms(void)
{
	if(flag == 1)
	{
		flag = 0;

		while(flag == 0)
		{
			flag1 =0;
			UCSRA = 0;
			while(flag1 != 1);

			if(temp == '+')
			{
				flag1 = 0;
				UCSRA = 0;
			
				while(flag1 != 1);
					
					if(temp == 'C')
					{
						flag1 = 0;
						UCSRA = 0;
						
						while(flag1 != 1);
							if(temp == 'M')
							{
								flag1 = 0;
								UCSRA = 0;
						
								while(flag1 != 1);

									if(temp == 'T')
									{
										flag1 = 0;
										UCSRA = 0;
						
										while(flag1 != 1);

											if(temp == 'I')
											 {
												
												for(loop =0;temp != ',';loop++)
												{
													flag1 = 0;
													UCSRA = 0;
													while(flag1 != 1);
												}
												flag1 = 0;
												UCSRA = 0;

												while(flag1 != 1);
												msgno = temp;
												flag = 1;
												
												flag1 = 0;
												UCSRA =0;
											}
											else
											{
												flag1 = 0;
												UCSRA = 0;
											}												
						
									  }			
                                      else
									  {
												flag1 = 0;
												UCSRA = 0;
									 }

		                      }

                               	else
								{
									flag1 = 0;
									UCSRA = 0;
								}
                         }
						 	else
							{
								flag1 = 0;
								UCSRA = 0;
							}
                    }
					else
					 {
							flag1 = 0;
							UCSRA = 0;
				     }

				}

        }
        
}


void del_sms(unsigned char num)
{
	while(num != '0')
	{
		unsigned char *d ="AT+CMGD=";
		
		while(*d)
		{
			send_uart1(*d++);
			delay_ms(2);
		}

		send_uart1(num--);
		send_uart1(13);
		delay_ms(2);
	}

}
 
void main()
{  
	//char *ph="9849111633";
        //char *p1="ON";  
	//char *p2="OFF";
        //int i=0;
	DDRA = 0xFF;
	PORTA = 0x00;
        DDRC = 0xFF;
        PORTC = 0x00;
	
	init_uart(); 
	init_lcd();
	//delay_ms(100); 
	
        
	
        while(1)
	{
        PORTA = 0x01;
	flag1 = 0;
	UCSRA = 0;
	flag = 1;
	//init_LCD();
	
	wait_for_sms();
	
	get_sms(msgno);
	 if(flag_get_sms == 1)
	 {
	        flag_get_sms = 0;
	        Clear_Lcd();
	        Lcd_Send_String(recv_buf);   
                delay_ms(2);
         } 
         
	del_sms(msgno);
	
	//while(1);
}
}