14-基础技能综合实训案例

合集 - 蓝桥杯(单片机)(19)

1.01-LED指示灯的基本控制2023-10-032.02-蜂鸣器与继电器的基本控制2023-10-033.05-独立按键的基本操作与扩展应用2023-10-044.04-共阳数码管的动态显示2023-10-035.03-共阳极数码管的静态显示2023-10-036.06-矩阵键盘的基本操作2023-10-057.07-中断系统与外部中断应用2023-10-058.08-定时器的基本原理与应用2023-10-059.09-定时器的进阶综合案例2023-10-0610.10-PWM脉宽调制信号的发生与控制2023-10-0611.11-串口通信的基本原理与应用2023-10-0812.12-串行接口的进阶应用2023-10-0913.13-io扩展技术与存储器映射扩展2023-10-10

14.14-基础技能综合实训案例2023-10-12

15.15-DS18B20温度传感器的基本应用2023-10-1916.16-DS1302的基本应用2023-10-2017.17-基于NE555的信号发生与频率测量2023-10-2118.18-PCF8591模块的基本使用2023-10-2919.19-AT24C02的基本应用2024-02-25

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基础技能综合实训案例

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#include <REGX52.H>

sfr AUXR = 0X8e;

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

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

unsigned char hour = 0;
unsigned char minute = 0;
unsigned char second = 0;



unsigned char stat_led = 0xff;
unsigned char command = 0x00;
unsigned  char code  tables[18]= {
	0xC0,  		// 		1100 0000  // 0
	0xf9,	    // 		1111 1001   1
	0xa4,       // 		1010 0100   2          
	0xb0,       // 		1011 0000   3
	0x99,       // 		1001 1001   4
	0x92,       // 		1001 0010   5
	0x82,       // 		1000 0010   6
	0xf8,       // 		1111 1000   7
	0x80,       // 8
	0x90,       // 9    1001 0000
	0x88,       // A    1000 1000
	0x80,       // b    1000 0011
	0xc6,       // c    1100 0110
	0xc0,       // d    1010 0001
	0x86,       // E    1000 0110
	0x8e,       // F    1000 1110
	0xbf,        // -		1011 1111
	0x7f
};
void SMG_Display(void);
void Delay_ms(unsigned int xms) {
	
	unsigned int i,j;
	
	for(i = 0; i < xms;i++) {
		for(j = 0; j<299;j++);
	}
}
void _74HC138(unsigned char n) {
	switch(n) {
		case 4: P2 = (P2 & 0x1f) | 0x80;
		break;
		case 5: P2 = (P2 & 0x1f) | 0xa0;
		break;
		case 6: P2 = (P2 & 0x1f) | 0xc0;
		break;
		case 7: P2 = (P2 & 0x1f) | 0xe0;
		break;
		case 0: P2 = (P2 & 0x1f) | 0x00;
		break;
	}

}
void System_Init(void) {
	_74HC138(5);
	P0 = 0x00;
	_74HC138(4);
	P0 = 0xff;
	

}

void SMG_duanma(unsigned char Location,unsigned char Value) {
	_74HC138(6);
	P0 = 0x01 << Location;
	_74HC138(7);
	P0 = Value;
}
void LED_Init(){
	unsigned char i;
	_74HC138(4);
	
	for(i = 0; i < 8;i++) {
		P0 = 0xfe << i;   // 1111 1110 << i == 
		Delay_ms(500);
	}
	
	for(i = 0; i < 8 ;i++) {
		P0 = ~(0xfe << i);  // 0000 0001 
		Delay_ms(500);
	}
	
	_74HC138(0);
}

void SMG_Init() {
	unsigned char i;
	_74HC138(7);
	P0 = 0x00;
	for(i = 0; i < 8;i++) {
		_74HC138(6);     	// 1111 1110  1111 1100
		P0 = ~(0xfe << i); 	// 0000 0001   0000 0011 0000 0111
		Delay_ms(500);  // 
	}
	
	for(i = 0; i < 8;i++) {		//1111 1110  1111 1100 1111 1000
		_74HC138(6);
		P0 = 0xfe <<i;
		Delay_ms(500);
	}
}
void LocalCleak(void) {
	if(S5 == 0) {
		SMG_Display();
		if(S5 == 0) {
			while(S5 == 0) {
				SMG_Display();
			}				// 7
			_74HC138(4); 
			stat_led = (stat_led | 0x40) & (~stat_led | 0xbf);
			P0 = stat_led;
			
			_74HC138(0); 
			
			
			
		}
	}
	if(S4 == 0) {
		SMG_Display();
		
		if(S4 ==0) {
			while(S4 ==0) {
				SMG_Display();
			}
			
			_74HC138(4);
			stat_led = (stat_led | 0x80) & (~stat_led | 0x7f);
			P0 = stat_led;
			_74HC138(0);
		}
	}
	
	
}
void SMG_Delay(unsigned int t) {
	while(t--);
}
void SMG_Display(void) {
	SMG_duanma(0,tables[hour/10]);
	SMG_Delay(500);
	SMG_duanma(1,tables[hour%10]);
	SMG_Delay(500);
	SMG_duanma(2,tables[16]);
	SMG_Delay(500);
	SMG_duanma(3,tables[second/10]);
	SMG_Delay(500);
	SMG_duanma(4,tables[second%10]);
	SMG_Delay(500);
	SMG_duanma(5,tables[16]);
	SMG_Delay(500);
	SMG_duanma(6,tables[minute/10]);
	SMG_Delay(500);
	SMG_duanma(7,tables[minute%10]);
	SMG_Delay(500);
}

void Timer0Init(void) {
	TMOD = 0x21;
	// 20ms
	TH0 = (25535-20000) / 256;
	TL0 = (25535-20000) % 256;
	
	TR0 = 1;
	ET0 = 1;
	EA = 1;
	
	

}
unsigned char count = 0;


void Timer0Rountine () interrupt 1 {
	TH0 = (25535-20000) / 256;
	TL0 = (25535-20000) % 256;
	
	count++;
	
	if(count == 20) {
		count = 0;
		minute++;
		if(minute == 60) {
			minute = 0;
			second ++;
			
			if(second == 60) {
				second= 0;
				hour++;
				if(hour == 99){
					hour=0;
				}
			}
		}
	}

}



void UART_Init(void) {
	TMOD = 0x21;
	
	SCON = 0x50;
	AUXR = 0x00;
	
	TH1 = 0xfd;
	TL1 = 0xfd;
	ES = 1;
	EA = 1;
	TR1 = 1;
	
	
}
void SendByte(unsigned char dat) {
	SBUF = dat;
	
	while(TI == 0);
	TI = 0;
}

void UART1_Routine(void) interrupt 4 {
	
	if(RI == 1) {
		RI = 0;
		command = SBUF;
	}
}

void UART_work(void) {
	
	if(command != 0x00) {
		_74HC138(4);
		switch(command & 0xf0) {   //1010 0001
			case 0xa0:  // 保留高四位     0101 1110 & 0000 1111
				P0 = (P0 & 0xf0) | (~command & 0x0f);
				command = 0;
			break;
			case 0xb0:
				SendByte((hour/10 << 4)|(hour % 10));
				SendByte((second/10 << 4)|(second % 10));
				SendByte((minute/10 << 4)|(minute % 10));
				command = 0;
			break;
		}
	}
}

void main(void) {
	System_Init();
	LED_Init();
	SMG_Init(); 
	Timer0Init();
	UART_Init();
		
	while(1) {
		UART_work();
		SMG_Display();
		
		LocalCleak();
	}
}