14-综合实训案例

#include "reg52.h"
#include <stdio.h>
#include <string.h>
sfr AUXR = 0x8e;

sbit L7 = P0^6;
sbit L8 = P0^7;

sbit S5 = P3^2;
sbit S4 = P3^3;

//=========预定义=========
unsigned char t_005ms = 0;
unsigned char shi = 0;
unsigned char fen = 0;
unsigned char miao = 0;
unsigned char stat_led;
//========================

void Delay(unsigned int t)
{
	while(t--);
	
}

unsigned char code table[] = 
{
	0xc0,//0
	0xf9,//1
	0xa4,//2
	0xb0,//3
	0x99,//4
	0x92,//5
	0x82,//6
	0xf8,//7
	0x80,//8
	0x90,//9
	0x88,//A
	0x83,//B
	0xc6,//C
	0xa1,//D
	0x86,//E
	0x8e,//F
	0xbf,//-
	0x7f//.
};

//=======寄存器选择
void SelectHC573(unsigned char n)
{
	switch(n)
	{
		case 4:
			P2 = (P2&0x1f)|0x80;//LED
		break;
		
		case 5:
			P2 = (P2&0x1f)|0xa0;//蜂鸣器
		break;
		case 6:
			P2 = (P2&0x1f)|0xc0;//位选
		break;
		case 7:
			P2 = (P2&0x1f)|0xe0;//段选
		break;
		case 0:
			P2 = (P2&0x1f)|0x00;//段选
		break;
		
	}
}

//=========跑马灯=========
void LEDRunning()
{
	
	unsigned char i;
	for(i = 0;i < 8;i++)
	{
		SelectHC573(4);
		P0 = ~(0x01 << i);
		Delay(60000);
		Delay(60000);
	}
	P0 = 0xff;
	Delay(60000);
	Delay(60000);
}

//======数码管浏览=============
void SMGRunning()
{
	unsigned char i;
	for(i = 0;i < 8;i++)
	{
		SelectHC573(6);
		P0 = 0x01 << i;
		SelectHC573(7);
		P0 = 0x00;
		Delay(60000);
		Delay(60000);
	}
	P0 = 0xff;
	Delay(60000);
	Delay(60000);
}

//==========数码管显示时钟==========
void display(unsigned char val,unsigned char pos)
{
	SelectHC573(6);
	P0 = 0x01<<pos;
	SelectHC573(7);
	P0 = table[val];
}
void showtime()
{
	display(miao%10,7);//个秒
	Delay(500);
	display(miao/10,6);//十
	Delay(500);
	display(16,5);
	Delay(500);
	
	display(fen%10,4);//个分
	Delay(500);
	display(fen/10,3);//十
	Delay(500);
	display(16,2);
	Delay(500);
	
	display(shi%10,1);//个时
	Delay(500);
	display(shi/10,0);//十
	Delay(500);
	
}

//========定时器相关函数==============
void InitTimer0()
{
	TMOD = 0x21;
	TH0 = (65535 - 50000)/256;
	TL0 = (65535 - 50000)%256;
	
	ET0 = 1;
	EA = 1;
	TR0 = 1;
}

void Timer0() interrupt 1
{
	TH0 = (65535 - 50000)/256;
	TL0 = (65535 - 50000)%256;
	
	t_005ms++;
	if(t_005ms == 20)
	{
		miao++;
		t_005ms = 0;
		if(miao == 60)
		{
			fen++;
			miao = 0;
		}
		if(fen == 60)
		{
			shi++;
			fen = 0;
		}
		if(shi == 24)
		{
			shi = 0;
		}
	}
}
//=================串口通信==============
void InitSystem()
{
	SelectHC573(5);
	P0 = 0x00;
	SelectHC573(4);
	P0 = 0xff;
	SelectHC573(0);
	stat_led = P0;
	
}


void InitUart()
{
	TMOD = 0x21;
	TH1 = 0xfd;
	TL1 = 0xfd;
	TR1 = 1;
	
	SCON = 0x50;
	AUXR = 0x00;
	ES = 1;
	EA = 1;
}


void SendByte(unsigned char dat)//发送
{
	SBUF = dat;
	while(TI == 0);
	TI = 0;
}

unsigned char command = 0x00;
void ServiceUart() interrupt 4 //接收
{
	if(RI == 1)
	{
		RI = 0;
		command = SBUF;
	}
	
}
//=======================
unsigned char code byte[] = {10};
void Working()
{
	
	if(command != 0x00)
	{
		switch(command & 0xf0)
		{
			
			case 0xa0:
				SelectHC573(4);
				stat_led = (stat_led | 0x0f) & (~command | 0xf0);
				P0 = stat_led;
				SelectHC573(0);
				command = 0x00;
			break;
			
			case 0xb0:
				SendByte((shi /10 << 4) | (shi %10));
				SendByte((fen /10 << 4) | (fen %10));
				SendByte((miao /10 << 4) | (miao %10));
				command = 0x00;
			break;
		
			
		}
	}
}

void ScanKey()
{
	if(S5 == 0)
	{
		Delay(100);
		while(S5 == 0)
		{
			Working();
			showtime();
		}
		SelectHC573(4);
		P0 = stat_led;
		L7 = 0;
	}
	if(S4 == 0)
	{
		Delay(100);
		while(S4 == 0)
		{
			Working();
			showtime();
		}
		SelectHC573(4);
		P0 = stat_led;
		L8 = 0;
	}
}

void main()
{
	InitSystem();
	LEDRunning();
	SMGRunning();
	InitUart();
	InitTimer0();
	while(1)
	{
		Working();
		showtime();
		ScanKey();
	}
}