tongxin.c

单片机与电脑串口通信单片机与电脑串口通信

#pragma small
#include <reg51.h>
#include <absacc.h>
 unsigned char x;
unsigned char code table[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0x46,0xa1,0x86,0x8e,0xee,0xbf};
main()
{SCON=0x50;
 PCON=0;
 TMOD=0X20;
 TL1=0x0fd;
 TH1=0x0fd;
 TR1=1;
 ES=1;
 EA=1;
 for(;;){;}//XBYTE[0xa000]=x;XBYTE[0xa001]=0x0f;}
}

void ssio(void) interrupt 4 using 1
{
 if(RI){
 RI=0;
 ES=0;
 x=SBUF;
 SBUF=x;
 ES=1;
}
if(TI){
 TI=0;
 ES=1;
}
XBYTE[0xa001]=table[x];
return;
}