单片机中断（二）

简易电子钟

#include <reg51.h>
#include <display.h>

void T0_ISR_Init(void);//初始化计数器1
void T1_ISR_Init(void);//初始化计数器2
void Timering();

unsigned char Key_Press_1(void);
unsigned char Key_Press_2(void);

void delayms(unsigned char n);

unsigned char Timer[6] = {0};
unsigned char flag,t_50ms;
char Index = 0;

sbit Key_1 = P2 ^ 2;
sbit Key_2 = P2 ^ 3;

void main()
{
	T0_ISR_Init();
	T1_ISR_Init();
	while(1)
	{
		TempData[0] = Seg_Code[Timer[5]];
		TempData[1] = Seg_Code[Timer[4]];
		TempData[2] = Seg_Code[10];
		TempData[3] = Seg_Code[Timer[3]];
		TempData[4] = Seg_Code[Timer[2]];
		TempData[5] = Seg_Code[10];
		TempData[6] = Seg_Code[Timer[1]];
		TempData[7] = Seg_Code[Timer[0]];
		flag = Key_Press_2();
		if(1 == flag)
		{
			Index ++;
			if(Index >= 6)
				Index = 0;
		}
		else if(2 == flag)
		{
			Index = 0;
		}
		if(1 == Key_Press_1())
		{
			Timer[Index] ++;
			Timering();
			//Index = 5;
			t_50ms = 0;
			T0_ISR_Init();
		}
		if(20 == t_50ms)
		{
			t_50ms = 0;
			Timer[0] ++;
			Timering();
		}
		//display(0,8);
	}
}

void T1_ISR_Init(void)
{
	TMOD |= 0x10;
	TH1 = (65536 - 200) / 256;
	TL1 = (65536 - 200) % 256;
	EA = 1;
	ET1 = 1;
	PT1 = 0;
	TR1 = 1;
}

void T1_ISR(void) interrupt 3
{
	TH1 = (65536 - 200) / 256;
	TL1 = (65536 - 200) % 256;
	
	display(0,8);
}

void T0_ISR_Init(void)
{
	TMOD |= 0x01;
	TH0 = 0x3c;//(65536 - 50000) / 256
	TL0 = 0xb0;//(65536 - 50000) % 256
	EA = 1; 
	ET0 = 1;
	PT0 = 1;
	TR0 = 1;
}

void T0_ISR(void) interrupt 1
{

	EA = 0;
	TH0 = 0x3c;
	TL0 = 0xb0;
	t_50ms ++;
	
	EA = 1;
}

unsigned char Key_Press_1(void)
{
	unsigned char flag = 0;
	if(!Key_1)//按键按下，去抖
	{
		delayms(10);
		if(!Key_1)
		{
			flag = 1;
			while(!Key_1);
		}
	}
	return flag;
}

unsigned char Key_Press_2(void)
{
	unsigned char flag = 0;
	unsigned char num = 0;
	if(!Key_2)
	{
		delayms(10);
		if(!Key_2)
		{
			flag = 1;
			while(!Key_2)//判断是否长按
			{
				delayms(200);
				num ++;
				if(num > 20)
				{
					ET1 = 0;
					flag = 2;
				}
			}
			ET1 = 1;
		
		}
	}
	return flag;
}

void Timering()
{
	if(10 <= Timer[0])
	{
		Timer[0] = 0;
		Timer[1] ++;
	}
	if(6 <= Timer[1])
	{
		Timer[1] = 0;
		Timer[2] ++;
	}
	if(10 <= Timer[2])
	{
		Timer[2] = 0;
		Timer[3] ++;
	}
	if(6 <= Timer[3])
	{
		Timer[3] = 0;
		Timer[4] ++;
	}
	if(10 <= Timer[4])
	{
		Timer[4] = 0;
		Timer[5] ++;
	}
	if(Timer[5] >= 2)
	{
		Timer[5] = 2;
	}
	if(4 <= Timer[4] && 2 <= Timer[5])
	{
		Timer[0] = Timer[1] = Timer[2] = Timer[3] = Timer[4] = Timer[5] = 0;
	}	
}

void delayms(unsigned char n)
{
	while(--n);
}

#include "display.h"

sbit Seg_Latch = P2 ^ 0; //段锁存
sbit Bit_Latch = P2 ^ 1; //位锁存
unsigned char code Seg_Code[] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x40};
//断码显示
unsigned char code Bit_Code[] = {0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
unsigned char TempData[8];

void display(unsigned char firstbit,unsigned char num)
{
	unsigned char i;
	for(i = 0;i < num;i ++)
	{ 
	   DataPort=0;   
     Seg_Latch = 1;   
     Seg_Latch = 0;

     DataPort=Bit_Code[i+firstbit]; 
     Bit_Latch = 1;    
     Bit_Latch = 0;

     DataPort =TempData[i]; 
     Seg_Latch = 0;
     Seg_Latch = 1;
	}
		 
}