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#include <reg51.h>
#include <string.h>

#define INBUF_LEN 4 //Êý¾Ý³¤¶È

unsigned char inbuf1[INBUF_LEN];
unsigned char checksum,count3;
bit read_flag= 0 ;

void init_serialcomm( void )
{
SCON = 0x50 ; //SCON: serail mode 1, 8-bit UART, enable ucvr
TMOD |= 0x20 ; //TMOD: timer 1, mode 2, 8-bit reload
PCON |= 0x80 ; //SMOD=1;
TH1 = 0xF4 ; //Baud:4800 fosc=11.0592MHz
IE |= 0x90 ; //Enable Serial Interrupt
TR1 = 1 ; // timer 1 run
// TI=1;
}

void delayms(unsigned int t)
{
unsigned int  i;
while(t--)
{
/* ¶ÔÓÚ11.0592MʱÖÓ£¬Ô¼ÑÓʱ1ms */
for (i=0;i<125;i++)
{}
}
}




//Ïò´®¿Ú·¢ËÍÒ»¸ö×Ö·û
void send_char_com( unsigned char ch)
{
SBUF=ch;
while (TI== 0 );
TI= 0 ;
}

//Ïò´®¿Ú·¢ËÍÒ»¸ö×Ö·û´®£¬strlenΪ¸Ã×Ö·û´®³¤¶È
void send_string_com( unsigned char *str, unsigned int strlen)
{
unsigned int k= 0 ;
do
{
send_char_com(*(str + k));
k++;
} while (k < strlen);
}


//´®¿Ú½ÓÊÕÖжϺ¯Êý
void serial () interrupt 4 using 3
{ if(RI)
{ P1=SBUF;
RI = 0 ;
}
  }

main()
{

init_serialcomm(); //³õʼ»¯´®¿Ú
while ( 1 )
{

P1=0X00;

}

}
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