interrupt.c

单片机的主控端

#include "sys.h"

extern data UCHAR *p;
extern UCHAR UIData[6];
extern bit receiveFlag;
extern bit responseFlag;
extern bit sendFlag;

void int0() interrupt 0
{
    //todo
} 

void timer0() interrupt 1
{
    static UCHAR n;
	TH0 = 0;
	TL0 = 0;
	n++;
	if(n == 5)
	{
		n = 0;
		TR0 = 0;
		TH0 = 0;
		TL0 = 0;
		responseFlag = 1;
	}
}

void int1() interrupt 2
{
    //todo 
}

void timer1() interrupt 3
{
    //todo
}

void serial() interrupt 4
{
    static UCHAR temp = 0;
	if(RI)                   //the receive process 
	{
		RI = 0;
		if(RB8)              //receive the address
		{
			temp = SBUF;
			if(temp == LOCALCELL)
				SM2 = 0;
			temp = 0;
		}
		else                 //receive the data
		{
			UIData[temp++] = SBUF;
			if(temp == 6)
			{
    			SM2 = 1;
				receiveFlag = 1;
				TR0 = 0;     //receive the response,close the timer0
				TH0 = 0;
				TL0 = 0;
				temp = 0;
			}
		}
	}
	else if(TI && (temp < 2))
	{
	    TB8 = 0;         //sign data flag 
	    TI = 0;
        SBUF = *p;
		temp++;
	}
	else if(TI)
	{
		TI = 0;
		temp = 0;
		sendFlag = 1;
	}
}