串口.c

利用aduc812做点串口调试程序

#include<aduc812.h>
#include <stdio.h>


#define XTAL        11059200
#define baudrate    9600

unsigned char instr;

static void com_isr(void) interrupt 4 using 1
{	   
       if(RI) {	EA=0;
                instr=SBUF;
                RI=0;
				  
				EA=1;
				SBUF=instr;
                return;
       }
        if(TI!=0) TI=0;
		
}
void com_initialize(void) {
        PCON |= 0x80;
        TMOD=0x20;
        TH1=(unsigned char) (256-(XTAL/(16L*12L*baudrate)));
        TL1=(unsigned char) (256-(XTAL/(16L*12L*baudrate)));
        SCON=0x50;
        ES=1;
        TR1=1;
}

void main (void)  {
        
        EA=1;
        com_initialize();
        while(1) ;
}