hong lv deng.c

模拟交通灯

#include <reg51.h>
#define uchar unsigned char
#define uint unsigned int

sbit P3_2=P3^2;
sbit P1_0=P1^0;
sbit P1_1=P1^1;
sbit P1_2=P1^2;
sbit P1_3=P1^3;
sbit P1_4=P1^4;
sbit P1_5=P1^5;
sbit P1_6=P1^6;

#define OSC_FREQ	12000000
#define _1ms		(65536-OSC_FREQ/(12000000/980))

void Timer_1ms(uint_1ms);
void Led_RR();       //红红
void Led_RG();       //红绿
void Led_RY();       //红黄
void Led_GR();       //绿红
void Led_YR();       //黄红 
void Led_Off();
void Xint0(void);

/*****************************************************/

void main(void)
{
	P1=0x00;
	EA=1;
	EX0=1;
	IT0=0;	
	Led_RR();
	do{
		Led_RG();
		Led_RY();
		Led_GR();
		Led_YR();
	}while(1);
}

/********************************/

void Timer_1ms(uint_1ms)
{
	TMOD=TMOD&(0x0f)|0x10;
	TR1=1;
	while(uint_1ms--)
	{
		TH1=_1ms/256;
		TL1=_1ms%256;
		while(!TF1);
		TF1=0;
	}
	TR1=0;
}

/*********************************/

void Xint0(void) interrupt 0 using 3
{
	P1_0=0;
	P1_2=0;
	P1_4=0;
	P1_5=0;
	P1_6=0;
	P1_1=1;
	P1_3=1;
	for(;;)
	{
	;
	}
}

/*********************************/

void Led_RR()           //红红2s
{
	P1_0=0;
	P1_2=0;
	P1_4=0;
	P1_5=0;
	P1_6=0;
	P1_1=1;
	P1_3=1;
	Timer_1ms(2000);
	Led_Off();
}

/*********************************/

void Led_RG()            //红绿5s
{
	P1_1=1;
	P1_2=1;
	Timer_1ms(5000);
	Led_Off();
}

/*********************************/
	
void Led_RY()         //红黄5s
{
	uint i;
	P1_1=1;
	for(i=1;i<=5;i++)
		{
		P1_5=1;
		Timer_1ms(500);
		P1_5=0;
		Timer_1ms(500);
		}
	Led_Off();
}

/**********************************/

void Led_GR()           //绿红5s
{
	P1_0=1;
	P1_3=1;
	Timer_1ms(5000);
	Led_Off();
}

/**********************************/

void Led_YR()          //黄红5s
{
	uint i;
	P1_3=1;
	for(i=1;i<=5;i++)
	{
		P1_4=1;
		Timer_1ms(500);
		P1_4=0;
		Timer_1ms(500);
	}
	Led_Off();
}

/*********************************/

void Led_Off()
{
	P1_0=0;
	P1_1=0;
	P1_2=0;
	P1_3=0;
	P1_4=0;
	P1_5=0;
	P1_6=0;
}

/********************************/