基于51单片机与DS1302时钟芯片和LCD1602液晶显示的数字时钟.doc

PROTEUS仿真图：KEIL C程序：#include #include LCD1602.h#include DS1302.hvoid Delay1ms(unsigned int count)unsigned int i,j;for(i=0;icount;i+)for(j=0;j120;j+);main()SYSTEMTIME CurrentTime;LCD_Initial();Initial_DS1302();GotoXY(0,0);Print( tian ma dian zi);GotoXY(0,1);Print(Time: );while(1)DS1302_GetTime(&CurrentTime);TimeToStr(&CurrentTime);GotoXY(6,1);Print(CurrentTime.TimeString);Delay1ms(400);#ifndef LCD_CHAR_1602_2005_4_9#define LCD_CHAR_1602_2005_4_9#include /Port Definitions*sbit LcdRs= P20;sbit LcdRw= P21;sbit LcdEn = P22;sfr DBPort = 0x80;/P0=0x80,P1=0x90,P2=0xA0,P3=0xB0.数据端口/内部等待函数*unsigned char LCD_Wait(void)LcdRs=0;LcdRw=1;_nop_();LcdEn=1;_nop_();/while(DBPort&0x80);/在用Proteus仿真时，注意用屏蔽此语句，在调用GotoXY()时，会进入死循环， /可能在写该控制字时，该模块没有返回写入完备命令，即DBPort&0x80=0x80 /实际硬件时打开此语句LcdEn=0;return DBPort;/向LCD写入命令或数据*#define LCD_COMMAND0 / Command#define LCD_DATA1 / Data#define LCD_CLEAR_SCREEN0x01 / 清屏#define LCD_HOMING 0x02 / 光标返回原点void LCD_Write(bit style, unsigned char input)LcdEn=0;LcdRs=style;LcdRw=0;_nop_();DBPort=input;_nop_();/注意顺序LcdEn=1;_nop_();/注意顺序LcdEn=0;_nop_();LCD_Wait();/设置显示模式*#define LCD_SHOW0x04 /显示开#define LCD_HIDE0x00 /显示关 #define LCD_CURSOR0x02 /显示光标#define LCD_NO_CURSOR0x00 /无光标 #define LCD_FLASH0x01 /光标闪动#define LCD_NO_FLASH0x00 /光标不闪动void LCD_SetDisplay(unsigned char DisplayMode)LCD_Write(LCD_COMMAND, 0x08|DisplayMode);/设置输入模式*#define LCD_AC_UP0x02#define LCD_AC_DOWN0x00 / default#define LCD_MOVE0x01 / 画面可平移#define LCD_NO_MOVE0x00 /defaultvoid LCD_SetInput(unsigned char InputMode)LCD_Write(LCD_COMMAND, 0x04|InputMode);/移动光标或屏幕*/*#define LCD_CURSOR0x02 #define LCD_SCREEN0x08#define LCD_LEFT0x00#define LCD_RIGHT0x04void LCD_Move(unsigned char object, unsigned char direction)if(object=LCD_CURSOR)LCD_Write(LCD_COMMAND,0x10|direction);if(object=LCD_SCREEN)LCD_Write(LCD_COMMAND,0x18|direction);*/初始化LCD*void LCD_Initial()LcdEn=0;LCD_Write(LCD_COMMAND,0x38); /8位数据端口,2行显示,5*7点阵LCD_Write(LCD_COMMAND,0x38);LCD_SetDisplay(LCD_SHOW|LCD_NO_CURSOR); /开启显示, 无光标LCD_Write(LCD_COMMAND,LCD_CLEAR_SCREEN); /清屏LCD_SetInput(LCD_AC_UP|LCD_NO_MOVE); /AC递增, 画面不动/*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);void Print(unsigned char *str)while(*str!=0)LCD_Write(LCD_DATA,*str);str+;/*void LCD_LoadChar(unsigned char user8, unsigned char place)unsigned char i;LCD_Write(LCD_COMMAND,0x40|(place*8);for(i=0; i0; i-) DS1302_IO = ACC0; /相当于汇编中的 RRC DS1302_CLK = 1; DS1302_CLK = 0; ACC = ACC 1; unsigned char DS1302OutputByte(void) /实时时钟读取一字节(内部函数) unsigned char i; for(i=8; i0; i-) ACC = ACC 1; /相当于汇编中的 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: 要写的数据 DS1302_RST = 0; DS1302_CLK = 0; DS1302_RST = 1; DS1302InputByte(ucAddr); / 地址，命令 DS1302InputByte(ucDa); / 写1Byte数据 DS1302_CLK = 1; DS1302_RST = 0; unsigned char Read1302(unsigned char ucAddr)/读取DS1302某地址的数据 unsigned char ucData; DS1302_RST = 0; DS1302_CLK = 0; DS1302_RST = 1; DS1302InputByte(ucAddr|0x01); / 地址，命令 ucData = DS1302OutputByte(); / 读1Byte数据 DS1302_CLK = 1; DS1302_RST = 0; return(ucData);void DS1302_SetProtect(bit flag) /是否写保护if(flag)Write1302(0x8E,0x10);elseWrite1302(0x8E,0x00);void DS1302_SetTime(unsigned char Address, unsigned char Value) / 设置时间函数DS1302_SetProtect(0);Write1302(Address, (Value/10)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)Time-DateString0 = Time-Year/10 + 0;Time-DateString1 = Time-Year%10 + 0;Time-DateString2 = -;Time-DateString3 = Time-Month/10 + 0;Time-DateString4 = Time-Month%10 + 0;Time-DateString5 = -;Time-DateString6 = Time-Day/10 + 0;Time-DateString7 = Time-Day%10 + 0;Time-DateString8 = 0;void TimeToStr(SYSTEMTIME *Time)Time-TimeString0 = Time-Hour/10 + 0;Time-TimeString1 = Time-Hour%10 + 0;Time-TimeString2 = :;Time-TimeString3 = Time-Minute/10 + 0;Time-TimeString4 = Time-Minute%10 + 0;Time-TimeString5 = :;Time-TimeString6 = Time-Second/10 + 0;Time-TimeString7 = Time-Second%10 + 0;Time-DateString8 = 0;void Initial_DS1302(void)unsigned char Second=Read1302(DS1302_SECOND);if(Second&0x80) DS1302_SetTime(DS1302_SECOND,0);/*void BurstWrite1302(unsigned char *pWClock)/往DS1302写入时钟数据(多字节方式) unsigned char i; Write1302(0x8e,0x00); / 控制命令,WP=0,写操作? DS1302_RST = 0; DS1302_CLK = 0; DS1302_RST = 1; DS1302InputByte(0xbe); / 0xbe:时钟多字节写命令 for (i = 8; i0; i-) /8Byte = 7Byte 时钟数据 + 1Byte 控制 DS1302InputByte(*pWClock); / 写1Byte数据 pWClock+; DS1302_CLK = 1; DS1302_RST = 0; void BurstRead1302(unsigned char *pRClock)/读取DS1302时钟数据(时钟多字节方式) unsigned char i; DS1302_RST = 0; DS1302_CLK = 0; DS1302_RST = 1; DS1302InputByte(0xbf); / 0xbf:时钟多字节读命令 for (i=8; i0; i-) *pRClock