藍橋杯單片機CT107D_13_工廠燈光控制系統

需求：(題目來自小蜜蜂老師)

#include<reg52.h>
sfr AUXR = 0x8e;               //設定輔助暫存器AUXR
sbit S7 = P3^0;	               //獨立按鍵S7
sbit S5 = P3^2;				   //獨立按鍵S5
unsigned char command;         //接收串口資料
unsigned char state = 0xff;    //LED當前狀態
unsigned char hour = 0;        //時
unsigned char minute = 0;      //分
unsigned char second = 0;      //秒
unsigned char count = 0; 	   //50ms定時計數
unsigned char code SEG_code[19] = 
	{0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,
	 0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e,
	 0xbf,0x7f,0x00};	           //定義共陽數碼管段碼內容:0~F,—,.

/*===============================系統初始化================================*/
//埠選擇
void Select_HC138(unsigned char n)     
{
	switch(n)
	{
		case 0:
			P2 = (P2 & 0x1f) | 0x00;   //不選擇
			break;
		case 4:
			P2 = (P2 & 0x1f) | 0x80;   //選擇LED
			break;
		case 5:
			P2 = (P2 & 0x1f) | 0xa0;   //選擇蜂鳴器和繼電器
			break;
		case 6:
			P2 = (P2 & 0x1f) | 0xc0;   //選擇數碼管的位置
			break;
		case 7:
			P2 = (P2 & 0x1f) | 0xe0;   //選擇數碼管的值
			break;
	}
}

//普通延時函式
void Delay_common(unsigned int t)      
{
	while(--t);		  //--t
}

//初始化
void Init_system()	  
{
	Select_HC138(5);
	P0 = 0x00;        //關閉蜂鳴器和繼電器
	Select_HC138(4);
	P0 = state;       //關閉LED
	Select_HC138(0);
}

//LED檢測
void Check_LED()      
{
	unsigned char i;
	Select_HC138(4);
	for(i=1;i<=8;i++)	  //依次點亮LED
	{
		P0 = state << i;
		Delay_common(60000);
		Delay_common(60000);
		Delay_common(60000);
	}
	for(i=1;i<=8;i++)	  //依次熄滅LED
	{		
		P0 = ~(state << i);
		Delay_common(60000);
		Delay_common(60000);
		Delay_common(60000);
	}
	Select_HC138(0);
}
		 
//數碼管檢測
void Check_SMG()	  
{	 	
	unsigned char j;
	for(j=1;j<=8;j++)
	{
		Select_HC138(6);         
		P0 = ~(0xff << j);		 //依次點亮數碼管
		Select_HC138(7);
		P0 = SEG_code[18];
		Delay_common(60000);
		Delay_common(60000);
		Delay_common(60000);
	}
	for(j=1;j<=8;j++)
	{
		Select_HC138(6);         
		P0 = 0xff << j;			 //依次熄滅數碼管
		Select_HC138(7);
		P0 = SEG_code[18];
		Delay_common(60000);
		Delay_common(60000);
		Delay_common(60000);
	}
	Select_HC138(0);
}
/*=========================================================================*/


/*===============================數碼管顯示================================*/
//數碼管顯示
void Show_tube(unsigned char position,unsigned char value)
{
	Select_HC138(6);
	P0 = 0x01 << position;
	Select_HC138(7);
	P0 = value;
}

//數碼管動態顯示
void Dynamic_display()
{
	Show_tube(0,SEG_code[hour/10]);     //顯示時的十位
	Delay_common(500);
	Show_tube(1,SEG_code[hour%10]);     //顯示時的個位
	Delay_common(500);
	
	Show_tube(2,SEG_code[16]);          //顯示分隔符
	Delay_common(500);
	
	Show_tube(3,SEG_code[minute/10]);   //顯示分的十位 
	Delay_common(500);
	Show_tube(4,SEG_code[minute%10]);   //顯示分的個位
	Delay_common(500);
	
	Show_tube(5,SEG_code[16]);			//顯示分隔符
	Delay_common(500);	

	Show_tube(6,SEG_code[second/10]);   //顯示秒的十位 
	Delay_common(500);
	Show_tube(7,SEG_code[second%10]);   //顯示秒的個位
	Delay_common(500);
}
/*=========================================================================*/


/*================================獨立按鍵=================================*/
//去抖動延時函式
void Delay_keys()     
{
	unsigned char m = 108,n = 145;
	while(--m)
	{
		while(--n);
	}
}

//獨立按鍵
void Press_keys()
{
	if(S7 == 0)			 //按下S7，點亮L8
	{
		Delay_keys();	 //去抖動
		if(S7 == 0)
		{
			Select_HC138(4);
			state = (state & 0x7f) | (~state & 0x80);  //將最高位取反：將最高位置0、保留state低7位，然后取state取反后的最高位、其他位置0，最后組合
			P0 = state;	             //將當前狀態賦值給P0
			Select_HC138(0);
			while(S7 == 0)
			{
				Dynamic_display();   //保證數碼管動態顯示
			}
		}
	}

	else if(S5 == 0)     //按下S5，點亮L7
	{
		Delay_keys();	 //去抖動
		if(S5 == 0)
		{
			Select_HC138(4);
			state = (state & 0xbf) | (~state & 0x40);  //將第7位取反：將第7位置0、保留state其他位，然后取state取反后的第7位、其他位置0，最后組合
			P0 = state;				 //將當前狀態賦值給P0
			Select_HC138(0);
			while(S5 == 0)
			{
				Dynamic_display();	 //保證數碼管動態顯示
			}
		}
	}
}
/*=========================================================================*/


/*================================定時器T0=================================*/
//定時器timer0中斷初始化
void Init_timer0()
{
	TMOD = 0x21;                   //注意：同時給定時器0和定時器1賦值
	TH0 = (65535 - 50000) / 256;   //定時50ms
	TL0 = (65535 - 50000) % 256; 

	EA =1;     //打開總中斷
	ET0 = 1;   //打開定時器0的中斷
	TR0 = 1;   //啟動定時器0
}

//定時器0中斷服務函式
void Service_timer0() interrupt 1
{
	TH0 = (65535 - 50000) / 256;   //重新賦值
	TL0 = (65535 - 50000) % 256;  
	count++;                       //定時滿50ms加1

	if(count == 20)
	{
		count = 0; 
		second++;				   //定時滿1s加1
	}
	if(second == 60)
	{
		second = 0;
		minute++;				   //定時滿1min加1
	}
	if(minute == 60)
	{
		minute = 0;
		hour++;					   //定時滿1h加1
	}
}
/*=========================================================================*/


/*================================串口通信=================================*/
//發送位元組
void Send_byte(unsigned char dat)
{
	SBUF = dat;		  //注意：串口自動轉換輸出16進制數
	while(TI == 0);   //等待發送
	TI = 0;           //清0
}

//發送字串
//void Send_string(unsigned char *str)
//{
//	while(*str != '\0')
//	{
//		Send_byte(*str++);
//	}
//}

//串口中斷初始化
void Init_uart() 
{
	SCON = 0x50;	//8位異步uart并允許接收
	AUXR = 0x00;	//將AUXR置0
	TMOD = 0x21;    //注意：同時給定時器0和定時器1賦值
	TH1 = 0xfd;
	TL1 = 0xfd;

	EA = 1;         //打開總中斷
	ES = 1;         //打開串口中斷
	TR1 = 1;		//啟動定時器1
}

//串口中斷服務函式
void Service_uart() interrupt 4
{
	if(RI == 1)     
	{
		RI = 0;           //清0
		command = SBUF;	  //接收資料
	}
}
/*=========================================================================*/


/*================================命令處理=================================*/
//對串口接收的命令進行相應處理
void Command_process()
{
	if(command)
	{
		switch(command & 0xf0)	      //取command的高4位,低4位清0
		{
			case 0xa0:				  //遠程燈光控制
				Select_HC138(4);
				state = (state & 0xf0) | (~command & 0x0f);     //保留state高4位，取~command的低4位，然后組合
				P0 = state;			  //將當前狀態賦值給P0
				Select_HC138(0);
				break;

			case 0xb0:				  //讀取系統運行時間
				Send_byte((hour/10 << 4) | (hour%10));       //發送時
				//Send_string("-");							 //分隔符
				Send_byte((minute/10 << 4) | (minute%10));   //發送分
				//Send_string("-");							 //分隔符
				Send_byte((second/10 << 4) | (second%10));   //發送秒
				//Send_string("\r\n");                       //換行 
				break;
		}
		command = 0;
	}
}
/*=========================================================================*/


/*=================================主函式==================================*/
void main()
{
	Init_system();           //初始化
	Check_LED();	         //LED檢測
	Check_SMG();	         //數碼管檢測
	Init_uart();	         //串口初始化
	Init_timer0();	         //定時器0初始化
	while(1)
	{
		Dynamic_display();   //數碼管動態顯示
		Press_keys();		 //獨立按鍵
		Command_process();   //命令處理
	}
}
/*=========================================================================*/