demo10.c

来自「PICC学习与PROTUES仿真实现」· C语言 代码 · 共 103 行

#include<pic.h>
volatile unsigned long Counter=1;
volatile unsigned char Sign=5;
volatile unsigned char tmp;
void initial()
{
	INTCON=0X00;
	OPTION=0X01;
	ADCON1=0X06;
	TRISE=0X00;
	PORTE=0X04;
	TRISB=0XFF;
	TRISD=0X00;
	PORTD=0X00;
}
void DELAY(unsigned int n)
{ 
	unsigned int i,j; 
	for(i=n;i--;)
	for(j=0;j<1000;j++)
	continue;
}
void INT()
{	
	GIE=1;
	INTE=1;
	PORTB=PORTB;
	RBIE=1;
	T0IE=1;
}
void main()
{ 
	initial();
	INT();
	while(1)
	{
		SLEEP();
		asm("nop");
		if(Sign==0)
		{ 
			Sign=5;
			RE2=1;
			PORTD=0;
		  TMR0=0X06;
		  for(;;)
		   {
			  DELAY(20);
			  RE0=!RE0;
			  if(Counter>=60000) 
			  {
				  RE0=0;
				  Counter=1;
				  RBIF=0;
			    break;
			  }
	     }
	  }
		 if(Sign==1)
		 { 
			 Sign=5;
			 PORTD=tmp;
			 RE2=0;
		   TMR0=0X06;
		   for(;;)
		   {
			  DELAY(10);
			  RE0=!RE0;
			  if(Counter>=30000) 
			  {
				  RE0=0;
				  Counter=1;
				  break;
	      }
	     }
	    }  	
	}
	
}
void interrupt tt(void)
{
	if(T0IF==1)
	{
		TMR0=0X06;
		Counter++;
		T0IF=0;	
	}
	if(INTF==1)
	{
		Sign=0;
		INTF=0;
	}
	if(RBIF==1)
	{ 
		Sign=1;
		if(RB4==0)tmp=0x80;
		if(RB5==0)tmp=0x40;
		if(RB6==0)tmp=0x20;
		if(RB7==0)tmp=0x10;
		RBIF=0; 
	}
}