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51单片机实现万年历

1、温度显示不正常，请调试程序，使得程序能正常显示；
2、选中的要修改的时间项目时，显示特效过于简单，请修改相关程序使得显示调整项目时显示亮灭相间；
3、第三个按键的功能请补充，减少选中的调整项目；
4、根据资料，掌握对DS1302的操作方法。
5、根据资料，画出系统的仿真电路图，按要求编写程序，并实现仿真效果

对于第一次通过边画图，边敲代码，而且还用11个数码管显示还是有点挑战的。

下面是我的代码，还有待优化，毕竟定时器都没用上（实训完就期末还是要留点时间复习的）。

main.c

#include "sys.h"
#include "onewire.h"
#include "ds1302.h"

uchar clock[3] = {0,0,0};

void main()
{
	uint i;
	Write_ds1302();
	while(1)
	{
		spk = 1;
		Get_Temper();
		Read_ds1302();
		if(clock[2] == Time[2] && clock[1] == Time[1] && clock[0] == Time[0])
		{
			for(i = 0; i < 200; i++)
			{
				KeyScans();
				DisplaySMG();
				Delay1ms(1);
				Read_ds1302();
				spk = !spk;
			}
			
		}
		KeyScans();
		for(i = 0; i < 10; i++)
		{
			DisplaySMG();
		}
	}
}

 sys.c

#include "sys.h"
#include "onewire.h"
#include "ds1302.h"
static unsigned char wx = 24;
uchar a = 2,b = 0;
void Delay1ms(uint x)
{
	uint i,j;
	for(i = 0; i < x; i++)
		for(j = 0; j <123; j++);
}

void Display1(uchar pos,value)
{
	static uchar temp1;
	if(pos == wx)     // 0 1 2 3 4 5 6 7
	{
		temp1++;
		if(temp1 == 40)
			temp1 = 0;
		if(temp1 < 20) P1 = 15<<4|0x0f;
		else P1 = value << 4|0x0f;
		
		P2 = pos << 4| 0x0f;
		Delay1ms(1);
		P1 = 0xff;
	}
	else
	{
		P1 = value << 4|0x0f;
		P2 = pos << 4| 0x0f;
		Delay1ms(1);
		P1 = 0xff;
	}
	
}

void Display2(uchar pos,value)
{
	static uchar temp2;
	if(pos + 8 == wx)  // 10 11 12 13 14 15
	{
		temp2++;
		if(temp2 == 40)
			temp2 = 0;
		if(temp2 < 20) P1 = value | 0xf0;
		else P1 = 15 | 0xf0;
		
		P2 = pos << 4 | 0x0f;
		Delay1ms(1);
		P1 = 0xff;
	}
	else
	{
		P2 = pos << 4 | 0x0f;
		P1 = value | 0xf0;
		Delay1ms(1);
		P1 = 0xff;
	}
	
}

void Display3(uchar pos,value)
{
	static uchar temp3;
	if(pos + 16 == wx)  // 18 19 20 21 22 23
	{
		temp3++;
		if(temp3 == 40)
			temp3 = 0;
		if(temp3 < 20) P2 = pos<<4|15;
		else P2 = pos << 4 | value;
		
		Delay1ms(1);
		P2 = pos << 4 | 0x0f;
	}
	else
	{
		P2 = pos << 4| value;
		Delay1ms(1);
		P2 = pos << 4| 0x0f;
	}
	
}


void DisplaySMG()
{
	Display1(0,a);
	Display1(1,b);
	Display1(2,Time[6] / 10);
	Display1(3,Time[6] % 10);
	Display1(4,Time[4] / 10);
	Display1(5,Time[4] % 10);
	Display1(6,Time[3] / 10);
	Display1(7,Time[3] % 10);
	
	Display3(2,Time[2] / 10);
	Display3(3,Time[2] % 10);
	Display3(4,Time[1] / 10);
	Display3(5,Time[1] % 10);
	Display3(6,Time[0] / 10);
	Display3(7,Time[0] % 10);
	
	
	Display2(2,clock[2] / 10);  //ʱ
	Display2(3,clock[2] % 10);
	Display2(4,clock[1] / 10);
	Display2(5,clock[1] % 10);
	Display2(6,clock[0] / 10);
	Display2(7,clock[0] % 10);
	
	Display2(0,temp / 10);
	Display2(1,temp % 10);
}

void KeyScans()
{
	bit flag;
	if(!k1&& !flag)
	{
		Delay1ms(10);
		if(!k1)
		{
			flag = 1;
			wx = (wx + 1) % 25;
			if(wx == 8) wx = 10;
			if(wx == 16) wx = 18;
		}
		else if(k1)
		{
			flag = 0;
		}
	}
	
	if(!k2&& !flag)
	{
		Delay1ms(10);
		if(!k2)
		{
			flag = 1;
			switch(wx)
			{
				case 0: a += 1;if(a > 9) a = 1; break;
				case 1: b += 1;if(b > 9) b = 0; break;
				case 2: Time[6] = (Time[6]/10 + 1)*10 + Time[6]%10;if(Time[6]>99) Time[6] = 0; Write_ds1302();break;
				case 3: Time[6] += 1;if(Time[6] > 99) Time[6] = 0; Write_ds1302(); break;
				case 4: Time[4] = (Time[4] / 10 + 1) * 10 + Time[4] % 10;if(Time[4]> 12) Time[4] = 1; Write_ds1302();break;
				case 5:Time[4] += 1;if(Time[4] > 12) Time[4] = 1;Write_ds1302();break;
				case 6: Time[3] = (Time[3] / 10 + 1)*10 + Time[3]%10; if(Time[3] > 31) Time[3] = 1; Write_ds1302();break;
				case 7: Time[3] += 1;if(Time[3] > 31) Time[3] = 1;Write_ds1302();break;
				
				case 10: clock[2] = (clock[2] / 10 + 1)*10 + clock[2] % 10; if(clock[2]>23) clock[2] = 0; break;
				case 11: clock[2] += 1;if(clock[2] > 23) clock[2] = 0;break;
				case 12: clock[1] = (clock[1] / 10 + 1)*10 + clock[1] % 10; if(clock[1]>59) clock[1] = 0;break;
				case 13: clock[1] += 1;if(clock[1]>59) clock[1] = 0;break;
				case 14: clock[0] = (clock[0] / 10 + 1)*10 + clock[0] % 10;if(clock[0] > 59) clock[0] = 0;break;
				case 15: clock[0] += 1; if(clock[0] > 59) clock[0] = 0;break;
				
				case 18: Time[2] = (Time[2]/10 + 1) * 10 + Time[2] % 10; if(Time[2]>23) Time[2] = 0;Write_ds1302(); break;
				case 19: Time[2] += 1;if(Time[2] > 23)Time[2] = 0;Write_ds1302();break;
				case 20: Time[1] = (Time[1]/10 + 1) * 10 + Time[1] %10;if(Time[1]>59) Time[1] = 0;Write_ds1302();break;
				case 21: Time[1] += 1;if(Time[1] > 59) Time[1]  = 0;Write_ds1302();break;
				case 22: Time[0] = (Time[0] / 10 + 1) * 10 + Time[0] %10; if(Time[0] > 59) Time[0] = 0; Write_ds1302();break;
				case 23: Time[0] += 1; if(Time[0] > 59) Time[0]  = 0;Write_ds1302();break;
			}
		}
		else if(k2)
		{
			flag = 0;
		}
	}
	
	if(!k3&& !flag)
	{
		Delay1ms(10);
		if(!k3)
		{
			flag = 1;
			switch(wx)
			{
				case 0:
					a -= 1;
					if(a < 1)
						a = 1;
					break;
				case 1:
					b -= 1;
					if(b < 0)
						b = 9;
					break;
				case 2:if((Time[6]) < 10) Time[6] = 109; Time[6] -= 10; Write_ds1302(); break;
				case 3:if((Time[6]) < 0) Time[6] = 10; Time[6] -= 1; Write_ds1302(); break;
				case 4:if((Time[4]) < 10) Time[4] = 22; Time[4] -= 10; Write_ds1302(); break;
				case 5:if((Time[4]) < 0) Time[4] = 2; Time[4] -= 1; Write_ds1302(); break;
				case 6:if((Time[3]) < 10) Time[3] = 41;Time[3] -= 10; Write_ds1302();break;
				case 7:if(Time[3] < 0) Time[3] = 4;Time[3] -= 1; Write_ds1302(); break;
				
				case 10:if(clock[2] < 10) clock[2] = 33;clock[2] -= 10; break;
				case 11:if(clock[2] < 0) clock[2] = 24; clock[2] -= 1; break;
				case 12:if(clock[1]< 10) clock[1] = 69; clock[1] -= 10; break;
				case 13:if(clock[1] <0) clock[1] = 60;clock[1] -= 1;break;
				case 14:if(clock[0] < 10) clock[0] = 69; clock[0] -= 10;	break;
				case 15: if(clock[0]< 0) clock[0] = 60; clock[0] -= 1;	break;
					
				case 18: if(Time[2] < 10) Time[2] = 33; Time[2] -= 10;Write_ds1302();break;  //ʱ
				case 19:if(Time[2] < 0) Time[2] = 24;Time[2] -= 1;Write_ds1302();break;
				case 20: if(Time[1]< 10) Time[1] = 69; Time[1] -= 10;Write_ds1302();break;
				case 21: if(Time[1] < 0) Time[1] = 60;Time[1] -= 1;Write_ds1302();break;
				case 22: if(Time[0] < 10) Time[0] = 69;Time[0] -= 10;Write_ds1302();break;
				case 23: if(Time[0]< 0) Time[0] = 60;Time[0] -= 1;Write_ds1302();break;
			}
		}
		else if(k3)
		{
			flag = 0;
		}
	}
	
	
//	if(k1 == 0)
//	{
//		Delay1ms(10);
//		wx = (wx + 1) % 25;
//		if(wx == 8) wx = 10;
//		if(wx == 16) wx = 18;
//		while(k1 == 0)
//		{
//			DisplaySMG();
//		}
//	}
//	if(k2 == 0)
//	{
//		Delay1ms(10);
//		switch(wx)
//		{
//			case 0: a += 1;if(a > 9) a = 1; break;
//			case 1: b += 1;if(b > 9) b = 0; break;
//			case 2: Time[6] = (Time[6]/10 + 1)*10 + Time[6]%10;if(Time[6]>99) Time[6] = 0; Write_ds1302();break;
//			case 3: Time[6] += 1;if(Time[6] > 99) Time[6] = 0; Write_ds1302(); break;
//			case 4: Time[4] = (Time[4] / 10 + 1) * 10 + Time[4] % 10;if(Time[4]> 12) Time[4] = 1; Write_ds1302();break;
//			case 5:Time[4] += 1;if(Time[4] > 12) Time[4] = 1;Write_ds1302();break;
//			case 6: Time[3] = (Time[3] / 10 + 1)*10 + Time[3]%10; if(Time[3] > 31) Time[3] = 1; Write_ds1302();break;
//			case 7: Time[3] += 1;if(Time[3] > 31) Time[3] = 1;Write_ds1302();break;
//			
//			case 10: clock[2] = (clock[2] / 10 + 1)*10 + clock[2] % 10; if(clock[2]>23) clock[2] = 0; break;
//			case 11: clock[2] += 1;if(clock[2] > 23) clock[2] = 0;break;
//			case 12: clock[1] = (clock[1] / 10 + 1)*10 + clock[1] % 10; if(clock[1]>59) clock[1] = 0;break;
//			case 13: clock[1] += 1;if(clock[1]>59) clock[1] = 0;break;
//			case 14: clock[0] = (clock[0] / 10 + 1)*10 + clock[0] % 10;if(clock[0] > 59) clock[0] = 0;break;
//			case 15: clock[0] += 1; if(clock[0] > 59) clock[0] = 0;break;
//			
//			case 18: Time[2] = (Time[2]/10 + 1) * 10 + Time[2] % 10; if(Time[2]>23) Time[2] = 0;Write_ds1302(); break;
//			case 19: Time[2] += 1;if(Time[2] > 23)Time[2] = 0;Write_ds1302();break;
//			case 20: Time[1] = (Time[1]/10 + 1) * 10 + Time[1] %10;if(Time[1]>59) Time[1] = 0;Write_ds1302();break;
//			case 21: Time[1] += 1;if(Time[1] > 59) Time[1]  = 0;Write_ds1302();break;
//			case 22: Time[0] = (Time[0] / 10 + 1) * 10 + Time[0] %10; if(Time[0] > 59) Time[0] = 0; Write_ds1302();break;
//			case 23: Time[0] += 1; if(Time[0] > 59) Time[0]  = 0;Write_ds1302();break;
//		}
//		while(k2 == 0)
//		{
//			DisplaySMG();
//		}
//	}
//	if(k3 == 0)
//	{
//		Delay1ms(10);
//		switch(wx)
//		{
//			case 0:
//				a -= 1;
//				if(a < 1)
//					a = 1;
//				break;
//			case 1:
//				b -= 1;
//				if(b < 0)
//					b = 9;
//				break;
//			case 2:if((Time[6]) < 10) Time[6] = 109; Time[6] -= 10; Write_ds1302(); break;
//			case 3:if((Time[6]) < 0) Time[6] = 10; Time[6] -= 1; Write_ds1302(); break;
//			case 4:if((Time[4]) < 10) Time[4] = 22; Time[4] -= 10; Write_ds1302(); break;
//			case 5:if((Time[4]) < 0) Time[4] = 2; Time[4] -= 1; Write_ds1302(); break;
//			case 6:if((Time[3]) < 10) Time[3] = 41;Time[3] -= 10; Write_ds1302();break;
//			case 7:if(Time[3] < 0) Time[3] = 4;Time[3] -= 1; Write_ds1302(); break;
//			
//			case 10:if(clock[2] < 10) clock[2] = 33;clock[2] -= 10; break;
//			case 11:if(clock[2] < 0) clock[2] = 24; clock[2] -= 1; break;
//			case 12:if(clock[1]< 10) clock[1] = 69; clock[1] -= 10; break;
//			case 13:if(clock[1] <0) clock[1] = 60;clock[1] -= 1;break;
//			case 14:if(clock[0] < 10) clock[0] = 69; clock[0] -= 10;	break;
//			case 15: if(clock[0]< 0) clock[0] = 60; clock[0] -= 1;	break;
//				
//			case 18: if(Time[2] < 10) Time[2] = 33; Time[2] -= 10;Write_ds1302();break;  //ʱ
//			case 19:if(Time[2] < 0) Time[2] = 24;Time[2] -= 1;Write_ds1302();break;
//			case 20: if(Time[1]< 10) Time[1] = 69; Time[1] -= 10;Write_ds1302();break;
//			case 21: if(Time[1] < 0) Time[1] = 60;Time[1] -= 1;Write_ds1302();break;
//			case 22: if(Time[0] < 10) Time[0] = 69;Time[0] -= 10;Write_ds1302();break;
//			case 23: if(Time[0]< 0) Time[0] = 60;Time[0] -= 1;Write_ds1302();break;
//		}
//		while(k3 == 0)
//		{
//			DisplaySMG();
//		}
//	}
}

onewire.c

#include "onewire.h"
uint temp;
//单总线延时函数
void Delay_OneWire(unsigned int t)
{
	while(t--);
}

//DS18B20芯片初始化
bit Init_DS18B20(void)
{
	bit initflag = 0;
	DQ = 1;
	_nop_();
	DQ = 0;
	Delay_OneWire(75); 
	DQ = 1;
	Delay_OneWire(4); 
	initflag = DQ;    
	Delay_OneWire(10);
  	DQ=1;
	nop_();
	return initflag;
}

//通过单总线向DS18B20写一个字节
void Write_DS18B20(unsigned char dat)
{
	unsigned char i;
	for(i=0;i<8;i++)
	{
		DQ = 0;
		nop_();
		DQ = dat&0x01;
		Delay_OneWire(4);
		DQ = 1;
		nop_();
		dat >>= 1;
	}
//	Delay_OneWire(5);
}

//从DS18B20读取一个字节
unsigned char Read_DS18B20(void)
{
	uchar i, j, dat;
	for(i=0;i<8;i++)
	{
		DQ = 0;
		_nop_();//产生读时序
		DQ = 1;
		_nop_();//释放总线
		j = DQ;
		Delay_OneWire(4);//76.95us
		DQ = 1;
		_nop_();
		dat = (j<<7)|(dat>>1);	
	}
	return (dat);
}

void Get_Temper()
{
	uchar lsb,msb;
	Init_DS18B20();
	Write_DS18B20(0xcc);
	Write_DS18B20(0x44);
	Delay_OneWire(200);
	Init_DS18B20();
	Write_DS18B20(0xcc);
	Write_DS18B20(0xbe);
	lsb = Read_DS18B20();
	msb = Read_DS18B20();
	temp = (msb << 8) | lsb;
	if((temp & 0xf8000) == 0x0000)
		temp = temp >> 4;
}

ds1302.c

#include "ds1302.h"

uchar WriteReg[7] = {0x80,0x82,0x84,0x86,0x88,0x8a,0x8c};
uchar Time[7] = {55,59,23,7,6,1,22};// 秒 分 时 日 月 星期 年

/*单字节写入一字节数据*/
void Write_Ds1302_Byte(unsigned char dat) 
{
	unsigned char i;
	SCK = 0;
	for (i=0;i<8;i++) 
	{ 
		if (dat & 0x01) 	// 等价于if((addr & 0x01) ==1) 
		{
			SDA_SET;		//#define SDA_SET SDA=1 /*电平置高*/
		}
		else 
		{
			SDA_CLR;		//#define SDA_CLR SDA=0 /*电平置低*/
		}		 
		SCK_SET;
		SCK_CLR;		
		dat = dat >> 1; 
	} 
}
/********************************************************************/ 
/*单字节读出一字节数据*/
unsigned char Read_Ds1302_Byte(void) 
{
	unsigned char i, dat=0;	
	for (i=0;i<8;i++)
	{	
		dat = dat >> 1;
		if (SDA_R) 	  //等价于if(SDA_R==1)    #define SDA_R SDA /*电平读取*/	
		{
			dat |= 0x80;
		}
		else 
		{
			dat &= 0x7F;
		}
		SCK_SET;
		SCK_CLR;
	}
	return dat;
}

/********************************************************************/ 
/*向DS1302 单字节写入一字节数据*/
void Ds1302_Single_Byte_Write(unsigned char addr, unsigned char dat)
{ 
unsigned char num;
	RST_CLR;			/*RST脚置低，实现DS1302的初始化*/
	SCK_CLR;			/*SCK脚置低，实现DS1302的初始化*/

	RST_SET;			/*启动DS1302总线,RST=1电平置高 */
	addr = addr & 0xFE;	 
	Write_Ds1302_Byte(addr); /*写入目标地址：addr,保证是写操作,写之前将最低位置零*/	
	num=(dat/10<<4)|(dat%10);
	Write_Ds1302_Byte(num);	 /*写入数据：dat*/
	RST_CLR;				 /*停止DS1302总线*/
	SDA_CLR;
}

/********************************************************************/ 
/*从DS1302单字节读出一字节数据*/
unsigned char Ds1302_Single_Byte_Read(unsigned char addr) 
{ 
	unsigned char temp,dat1,dat2;
	RST_CLR;			/*RST脚置低，实现DS1302的初始化*/
	SCK_CLR;			/*SCK脚置低，实现DS1302的初始化*/

	RST_SET;	/*启动DS1302总线,RST=1电平置高 */	
	addr = addr | 0x01;	 
	Write_Ds1302_Byte(addr); /*写入目标地址：addr,保证是读操作,写之前将最低位置高*/
	temp=Read_Ds1302_Byte(); /*从DS1302中读出一个字节的数据*/		
	dat1=temp/16;
	dat2=temp%16;
	temp=dat1*10+dat2;
	RST_CLR;	/*停止DS1302总线*/
	SDA_CLR;
	return temp;
}

void Write_ds1302()
{
	uchar i;
	Ds1302_Single_Byte_Write(0x8e,0x00);
	for(i = 0; i < 7; i++)
		Ds1302_Single_Byte_Write(WriteReg[i],Time[i]);
	Ds1302_Single_Byte_Write(0x8e,0x80);
}

void Read_ds1302()
{
	uchar i;
	for(i = 0; i < 7; i++)
		Time[i] = Ds1302_Single_Byte_Read(WriteReg[i]);
}

sys.h

#ifndef _SYS_H_
#define _SYS_H_

#include <REGX51.H>
#include <intrins.h>

#define uchar unsigned char
#define uint unsigned int
	
sbit k1=P0^1;
sbit k2=P0^2;
sbit k3=P0^3;
sbit spk=P0^6;	  //定时报警输出
extern unsigned char clock[3];
void Delay1ms(unsigned int x);
void Display1(unsigned char pos,value);
void Display2(unsigned char pos,value);
void Display3(unsigned char pos,value);
void DisplaySMG(void);
void KeyScans();
//void Alarm();
#endif

onewire.h

#ifndef _ONEWIRE_H_
#define _ONEWIRE_H_
#include <REGX51.H>
#include <intrins.h>

sbit DQ=P0^7;
#define uchar unsigned char
#define uint unsigned int

extern unsigned int temp;
void Delay_OneWire(unsigned int t);
bit Init_DS18B20(void);
void Write_DS18B20(unsigned char dat);
unsigned char Read_DS18B20(void);
void Get_Temper();

#endif

ds1302.h

#ifndef _DS1302_H_
#define _DS1302_H_
#include <REGX51.H>
#include <intrins.h>

sbit RST=P3^2;	  //SPI的复位线
sbit SD=P3^3;	  //SPI的io线
sbit SCK=P3^4;    //SPI的时钟线
/*复位脚*/
#define RST_CLR	RST=0	/*电平置低*/
#define RST_SET	RST=1	/*电平置高*/
/*双向数据*/
#define SDA_CLR	SD=0	/*电平置低*/
#define SDA_SET	SD=1	/*电平置高*/
#define SDA_R	SD	/*电平读取*/	
/*时钟信号*/
#define SCK_CLR	SCK=0	/*时钟信号*/
#define SCK_SET	SCK=1	/*电平置高*/

#define uchar unsigned char
#define uint unsigned int
extern unsigned char Time[7];

void Write_Ds1302_Byte(unsigned char dat) ;
unsigned char Read_Ds1302_Byte(void) ;
void Ds1302_Single_Byte_Write(unsigned char addr, unsigned char dat);
unsigned char Ds1302_Single_Byte_Read(unsigned char addr) ;
void Write_ds1302(void);
void Read_ds1302(void);

#endif

悦读

道可道，非常道；名可名，非常名。 无名，天地之始，有名，万物之母。 故常无欲，以观其妙，常有欲，以观其徼。 此两者，同出而异名，同谓之玄，玄之又玄，众妙之门。

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