serial Reception using 8051 tamil | Serial reception programming | seria...

code:-

  #include<regx52.h>

  #include"lcd.h" 

  #include"UART.h"

  #include<string.h>

char msg[50];

int newmsg=0,i=0;

void read_msg();

void incoming_msg() interrupt 4

{

if(RI==1)

{

RI=0;

newmsg=1;

}

}

void main()

{

EA=0;

ES=0;

lcd_init();

  UART_init();

display_lcd("WELCOME");

send_to_modem ("testing communication");

delay(1000);

lcdcmd(0x01);

EA=1;

ES=1;

while(1)

{

if(newmsg==1)

{

lcdcmd(0x01);

ES=0;

read_msg();

display_lcd(msg);

delay(100);

ES=1;

newmsg=0;

}

i=0;

while (msg[i] !='\0')

{

msg[i]='\0';

i++;

} 

}

}

void read_msg()

{

while(SBUF !='#') // welcome#

{

msg[i]=SBUF; 

  i++;

RI=0;

while(RI==0);

}

}

//////////////////88888888888888888888888//////////////////////////////////

sbit rs = P3^5;

//sbit rw = P3^6;

sbit en = P3^4;

void delay(unsigned int dela)

   {

   unsigned int l,mm;

   for(mm=0;mm<100;mm++)

   for(l=0;l<dela;l++);

   } 

void lcdcmd(unsigned char cmd)

{

P1 = cmd;

rs = 0;

// rw = 0;

en = 1;

delay(15);

en = 0;

// delay(150);

}

void datawrt_lcd(unsigned char datas)

{

P1 = datas;

rs = 1;

// rw = 0;

en = 1;

delay(15);

en = 0;

// delay(150);

}

void display_lcd(unsigned char *lcdstr)

{

    while (*lcdstr !='\0')

{

datawrt_lcd(*lcdstr);

lcdstr++;

}

}

void lcd_init()

{

lcdcmd(0x38);

lcdcmd(0x0C);

lcdcmd(0x01);  

lcdcmd(0x80);

}

////////////////////////////////////8888888888888888888888888////////////////////////////////////

 void UART_init(void);

void send_to_modem (unsigned char s[]);

void UART_init(void)

 {

  TMOD=0x20;    

  TH1=0xFD;

  SCON=0x50;

  TR1=1;

 }

void send_to_modem (unsigned char s[])

 {

  unsigned char r;

for(r=0;s[r]!='\0';r++) // to send the command to GSM modem to avoid echo signal 

  { //  the command is "ate0", 

    SBUF=s[r];

    while(TI==0);

    TI=0;

    delay(50);

  }

 // enter(); 

 }