用單片機設計壹個數字時鐘

#include <REG51.H>#include <intrins.h> #define uint unsigned int#define uchar unsigned charsbit DS1302_CLK = P1^7; //實時時鐘時鐘線引腳 sbit DS1302_IO = P1^6; //實時時鐘數據線引腳 sbit DS1302_RST = P1^5; //實時時鐘復位線引腳sbit wireless_1 = P3^0;sbit wireless_2 = P3^1;sbit wireless_3 = P3^2;sbit wireless_4 = P3^3; //無線控制sbit ACC0 = ACC^0;sbit ACC7 = ACC^7;char hide_sec,hide_min,hide_hour,hide_day,hide_week,hide_month,hide_year; //秒,分,時到日,月,年位閃的計數sbit Set = P2^0; //模式切換鍵sbit Up = P2^1; //加法按鈕sbit Down = P2^2; //減法按鈕sbit out = P2^3; //立刻跳出調整模式按鈕sbit DQ = P1^0; //溫度傳送數據IO口char done,count,temp,flag,up_flag,down_flag;uchar temp_value; //溫度值uchar TempBuffer[5],week_value[2]; void show_time(); //液晶顯示程序/***********1602液晶顯示部分子程序****************///Port Definitions**********************************************************sbit LcdRs = P2^5;sbit LcdRw = P2^6;sbit LcdEn = P2^7;sfr DBPort = 0x80; //P0=0x80,P1=0x90,P2=0xA0,P3=0xB0.數據端口 //內部等待函數**************************************************************************unsigned char LCD_Wait(void){ LcdRs=0; LcdRw=1; _nop_(); LcdEn=1; _nop_(); LcdEn=0; return DBPort; }//向LCD寫入命令或數據************************************************************#define LCD_COMMAND 0 // Command#define LCD_DATA 1 // Data#define LCD_CLEAR_SCREEN 0x01 // 清屏#define LCD_HOMING 0x02 // 光標返回原點void LCD_Write(bit style, unsigned char input){ LcdEn=0; LcdRs=style; LcdRw=0; _nop_(); DBPort=input; _nop_();//註意順序 LcdEn=1; _nop_();//註意順序 LcdEn=0; _nop_(); LCD_Wait(); } //設置顯示模式************************************************************#define LCD_SHOW 0x04 //顯示開#define LCD_HIDE 0x00 //顯示關 #define LCD_CURSOR 0x02 //顯示光標#define LCD_NO_CURSOR 0x00 //無光標 #define LCD_FLASH 0x01 //光標閃動#define LCD_NO_FLASH 0x00 //光標不閃動 void LCD_SetDisplay(unsigned char DisplayMode){ LCD_Write(LCD_COMMAND, 0x08|DisplayMode); } //設置輸入模式************************************************************#define LCD_AC_UP 0x02#define LCD_AC_DOWN 0x00 // default #define LCD_MOVE 0x01 // 畫面可平移#define LCD_NO_MOVE 0x00 //default void LCD_SetInput(unsigned char InputMode){ LCD_Write(LCD_COMMAND, 0x04|InputMode);} //初始化LCD************************************void LCD_Initial(){ LcdEn=0; LCD_Write(LCD_COMMAND,0x38); //8位數據端口,2行顯示,5*7點陣 LCD_SetDisplay(LCD_SHOW|LCD_NO_CURSOR); //開啟顯示, 無光標 LCD_Write(LCD_COMMAND,LCD_CLEAR_SCREEN); //清屏 LCD_SetInput(LCD_AC_UP|LCD_NO_MOVE); //AC遞增, 畫面不動} //液晶字符輸入的位置************************void GotoXY(unsigned char x, unsigned char y){ if(y==0) LCD_Write(LCD_COMMAND,0x80|x); if(y==1) LCD_Write(LCD_COMMAND,0x80|(x-0x40));} //將字符輸出到液晶顯示void Print(unsigned char *str){ while(*str!='\0') { LCD_Write(LCD_DATA,*str); str++; }} /***********DS1302時鐘部分子程序******************/typedef struct __SYSTEMTIME__{ unsigned char Second; unsigned char Minute; unsigned char Hour; unsigned char Week; unsigned char Day; unsigned char Month; unsigned char Year; unsigned char DateString[11]; unsigned char TimeString[9];}SYSTEMTIME; //定義的時間類型SYSTEMTIME CurrentTime; #define AM(X) X#define PM(X) (X+12) // 轉成24小時制#define DS1302_SECOND 0x80 //時鐘芯片的寄存器位置,存放時間#define DS1302_MINUTE 0x82#define DS1302_HOUR 0x84 #define DS1302_WEEK 0x8A#define DS1302_DAY 0x86#define DS1302_MONTH 0x88#define DS1302_YEAR 0x8C void DS1302InputByte(unsigned char d) //實時時鐘寫入壹字節(內部函數){ unsigned char i; ACC = d; for(i=8; i>0; i--) { DS1302_IO = ACC0; //相當於匯編中的 RRC DS1302_CLK = 1; DS1302_CLK = 0; ACC = ACC >> 1; } } unsigned char DS1302OutputByte(void) //實時時鐘讀取壹字節(內部函數){ unsigned char i; for(i=8; i>0; i--) { ACC = ACC >>1; //相當於匯編中的 RRC ACC7 = DS1302_IO; DS1302_CLK = 1; DS1302_CLK = 0; } return(ACC); } void Write1302(unsigned char ucAddr, unsigned char ucDa) //ucAddr: DS1302地址, ucData: 要寫的數據{ DS1302_RST = 0; DS1302_CLK = 0; DS1302_RST = 1; DS1302InputByte(ucAddr); // 地址，命令 DS1302InputByte(ucDa); // 寫1Byte數據 DS1302_CLK = 1; DS1302_RST = 0;} unsigned char Read1302(unsigned char ucAddr) //讀取DS1302某地址的數據{ unsigned char ucData; DS1302_RST = 0; DS1302_CLK = 0; DS1302_RST = 1; DS1302InputByte(ucAddr|0x01); // 地址，命令 ucData = DS1302OutputByte(); // 讀1Byte數據 DS1302_CLK = 1; DS1302_RST = 0; return(ucData);} void DS1302_GetTime(SYSTEMTIME *Time) //獲取時鐘芯片的時鐘數據到自定義的結構型數組{ unsigned char ReadValue; ReadValue = Read1302(DS1302_SECOND); Time->Second = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F); ReadValue = Read1302(DS1302_MINUTE); Time->Minute = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F); ReadValue = Read1302(DS1302_HOUR); Time->Hour = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F); ReadValue = Read1302(DS1302_DAY); Time->Day = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F); ReadValue = Read1302(DS1302_WEEK); Time->Week = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F); ReadValue = Read1302(DS1302_MONTH); Time->Month = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F); ReadValue = Read1302(DS1302_YEAR); Time->Year = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F); } void DateToStr(SYSTEMTIME *Time) //將時間年,月,日,星期數據轉換成液晶顯示字符串,放到數組裏DateString[]{ if(hide_year<2) //這裏的if,else語句都是判斷位閃爍,<2顯示數據,>2就不顯示,輸出字符串為 2007/07/22 { Time->DateString[0] = '2'; Time->DateString[1] = '0'; Time->DateString[2] = Time->Year/10 + '0'; Time->DateString[3] = Time->Year%10 + '0'; } else { Time->DateString[0] = ' '; Time->DateString[1] = ' '; Time->DateString[2] = ' '; Time->DateString[3] = ' '; } Time->DateString[4] = '/'; if(hide_month<2) { Time->DateString[5] = Time->Month/10 + '0'; Time->DateString[6] = Time->Month%10 + '0'; } else { Time->DateString[5] = ' '; Time->DateString[6] = ' '; } Time->DateString[7] = '/'; if(hide_day<2) { Time->DateString[8] = Time->Day/10 + '0'; Time->DateString[9] = Time->Day%10 + '0'; } else { Time->DateString[8] = ' '; Time->DateString[9] = ' '; } if(hide_week<2) { week_value[0] = Time->Week%10 + '0'; //星期的數據另外放到 week_value[]數組裏,跟年,月,日的分開存放,因為等壹下要在最後顯示 } else { week_value[0] = ' '; } week_value[1] = '\0'; Time->DateString[10] = '\0'; //字符串末尾加 '\0' ,判斷結束字符} void TimeToStr(SYSTEMTIME *Time) //將時,分,秒數據轉換成液晶顯示字符放到數組 TimeString[];{ if(hide_hour<2) { Time->TimeString[0] = Time->Hour/10 + '0'; Time->TimeString[1] = Time->Hour%10 + '0'; } else { Time->TimeString[0] = ' '; Time->TimeString[1] = ' '; } Time->TimeString[2] = ':'; if(hide_min<2) { Time->TimeString[3] = Time->Minute/10 + '0'; Time->TimeString[4] = Time->Minute%10 + '0'; } else { Time->TimeString[3] = ' '; Time->TimeString[4] = ' '; } Time->TimeString[5] = ':'; if(hide_sec<2) { Time->TimeString[6] = Time->Second/10 + '0'; Time->TimeString[7] = Time->Second%10 + '0'; } else { Time->TimeString[6] = ' '; Time->TimeString[7] = ' '; } Time->DateString[8] = '\0';} void Initial_DS1302(void) //時鐘芯片初始化{ unsigned char Second=Read1302(DS1302_SECOND); if(Second&0x80) //判斷時鐘芯片是否關閉 { Write1302(0x8e,0x00); //寫入允許 Write1302(0x8c,0x07); //以下寫入初始化時間日期:07/07/25.星期: 3. 時間: 23:59:55 Write1302(0x88,0x07); Write1302(0x86,0x25); Write1302(0x8a,0x07); Write1302(0x84,0x23); Write1302(0x82,0x59); Write1302(0x80,0x55); Write1302(0x8e,0x80); //禁止寫入 } } /***********ds18b20子程序*************************/ /***********ds18b20延遲子函數（晶振12MHz ）*******/ void delay_18B20(unsigned int i){ while(i--);} /**********ds18b20初始化函數**********************/ void Init_DS18B20(void) { unsigned char x=0; DQ = 1; //DQ復位 delay_18B20(8); //稍做延時 DQ = 0; //單片機將DQ拉低 delay_18B20(80); //精確延時大於 480us DQ = 1; //拉高總線 delay_18B20(14); x=DQ; //稍做延時後如果x=0則初始化成功 x=1則初始化失敗 delay_18B20(20);} /***********ds18b20讀壹個字節**************/ unsigned char ReadOneChar(void){ uchar i=0; uchar dat = 0; for (i=8;i>0;i--) { DQ = 0; // 給脈沖信號 dat>>=1; DQ = 1; // 給脈沖信號 if(DQ) dat|=0x80; delay_18B20(4); } return(dat);} /*************ds18b20寫壹個字節****************/ void WriteOneChar(uchar dat){ unsigned char i=0; for (i=8; i>0; i--) { DQ = 0; DQ = dat&0x01; delay_18B20(5); DQ = 1; dat>>=1; }} /**************讀取ds18b20當前溫度************/ void ReadTemp(void){ unsigned char a=0; unsigned char b=0; unsigned char t=0; Init_DS18B20(); WriteOneChar(0xCC); // 跳過讀序號列號的操作 WriteOneChar(0x44); // 啟動溫度轉換 delay_18B20(100); // this message is wery important Init_DS18B20(); WriteOneChar(0xCC); //跳過讀序號列號的操作 WriteOneChar(0xBE); //讀取溫度寄存器等（***可讀9個寄存器）前兩個就是溫度 delay_18B20(100); a=ReadOneChar(); //讀取溫度值低位 b=ReadOneChar(); //讀取溫度值高位 temp_value=b<<4; temp_value+=(a&0xf0)>>4; }void temp_to_str() //溫度數據轉換成液晶字符顯示{ TempBuffer[0]=temp_value/10+'0'; //十位 TempBuffer[1]=temp_value%10+'0'; //個位 TempBuffer[2]=0xdf; //溫度符號 TempBuffer[3]='C'; TempBuffer[4]='\0';}void Delay1ms(unsigned int count){ unsigned int i,j; for(i=0;i<count;i++) for(j=0;j<120;j++);} /*延時子程序*/void mdelay(uint delay){ uint i; for(;delay>0;delay--) {for(i=0;i<62;i++) //1ms延時. {;} }}