电子时钟

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_SHOW 0x04 //显示开 #define LCD_HIDE 0x00 //显示关

#define LCD_CURSOR 0x02 //显示光标 #define LCD_NO_CURSOR 0x00 //无光标

#define LCD_FLASH 0x01 //光标闪动 #define LCD_NO_FLASH 0x00 //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_UP 0x02 #define LCD_AC_DOWN 0x00 // default

#define LCD_MOVE 0x01 // 画面可平移 #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 }

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//液晶字符输入的位置

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)); }

//将字符输出到液晶显示 void Print(unsigned char *str) { while(*str!='\\0') { LCD_Write(LCD_DATA,*str); str++; } }

//DS1302时钟部分子程序

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; //定义的时间类型 SYSTEMTIME CurrentTime;

#define AM(X) X

#define PM(X) (X+12) // 转成24小时制

#define DS1302_SECOND 0x80 //时钟芯片的寄存器位置,存放时间 #define DS1302_MINUTE 0x82 #define DS1302_HOUR 0x84 #define DS1302_WEEK 0x8A #define DS1302_DAY 0x86 #define DS1302_MONTH 0x88

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#define DS1302_YEAR 0x8C

void DS1302InputByte(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 = 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;

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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_GetTime(SYSTEMTIME *Time) //获取时钟芯片的时钟数据到自定义的结构型数组 { 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) //将时间年,月,日,星期数据转换成液晶显示字符串,放到数组里DateString[]

{ if(hide_year<2) //这里的if,else语句都是判断位闪烁,<2显示数据,>2就不显示,输出字符串为 2007/07/22

{ Time->DateString[0] = '2'; Time->DateString[1] = '0'; Time->DateString[2] = Time->Year/10 + '0'; Time->DateString[3] = Time->Year + '0'; } else

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