基于51单片机与DS1302时钟芯片和LCD1602液晶显示的数字时钟(共9页)

1、精选优质文档-倾情为你奉上PROTEUS仿真图：KEIL C程序：#include <REGX52.H>#include "LCD1602.h"#include "DS1302.h"void Delay1ms(unsigned int count)unsigned int i,j;for(i=0;i<count;i+)for(j=0;j<120;j+);main()SYSTEMTIME CurrentTime;LCD_Initial();Initial_DS1302();GotoXY(0,0);Print(" tian

2、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 <intrins.h>/Port Definitions*sbit LcdRs= P20

3、;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;r

4、eturn 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()

5、;/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

6、 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,

7、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

8、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);

9、str+;/*void LCD_LoadChar(unsigned char user8, unsigned char place)unsigned char i;LCD_Write(LCD_COMMAND,0x40|(place*8);for(i=0; i<8; i+)LCD_Write(LCD_DATA,useri);*/*#endif#ifndef _REAL_TIMER_DS1302_2003_7_21_#define _REAL_TIMER_DS1302_2003_7_21_sbit DS1302_CLK = P16; /实时时钟时钟线引脚 sbit DS1302_IO = P

10、17; /实时时钟数据线引脚 sbit DS1302_RST = P15; /实时时钟复位线引脚sbit ACC0 = ACC0;sbit ACC7 = ACC7;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 DateString9;unsigned char TimeString9;SY

11、STEMTIME;/定义的时间类型#define AM(X)X#define PM(X)(X+12) / 转成24小时制#define DS1302_SECOND0x80#define DS1302_MINUTE0x82#define DS1302_HOUR0x84 #define DS1302_WEEK0x8A#define DS1302_DAY0x86#define DS1302_MONTH0x88#define DS1302_YEAR0x8C#define DS1302_RAM(X)(0xC0+(X)*2) /用于计算 DS1302_RAM 地址的宏 void DS1302InputBy

12、te(unsigned char d) /实时时钟写入一字节(内部函数) unsigned char i; ACC = d; for(i=8; i>0; 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; i>0; i-) ACC = ACC >>1; /相当于汇编中的 RRC ACC7

13、= 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; unsign

14、ed 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)Writ

15、e1302(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)<<4 | (Value%10); void DS1302_GetTime(SYSTEMTIME *Time)unsigned char ReadValue;ReadValue = Read1302(DS1302_SECOND);Time->Second

16、 = (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(D

17、S1302_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);R

18、eadValue = 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 =

19、 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->T

20、imeString0 = 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 = Tim

21、e->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? DS