数码管显示时钟程序

1、#include <reg52.h>#include <intrins.h>#include <string.h>#define uint unsigned int#define uchar unsigned chartypedef unsigned char BYTE;sbit IO = P10;sbit SCLK = P11;sbit RST = P12;sbit RS = P20;sbit RW = P21;sbit EN = P22;uchar *WEEK="SUN","*","MON",&

2、quot;TUS","WEN","THU","FRI","SAT"uchar LCD_DSY_BUFFER1="DATE 00-00-00 "uchar LCD_DSY_BUFFER2="TIME 00:00:00 "uchar DateTime7;void DelayMS(uint ms) uchar i;while(ms-) for(i=0;i<120;i+); /DS1302片选口P1.2 /秒 分 时 日 月 星期 年BYTE code init =

3、0x00, 0x00, 0x20, 0x01, 0x01, 0x05, 0x10;BYTE data now7;void DS1302_Initial();void DS1302_SetTime(BYTE *p);void DS1302_GetTime(BYTE *p);/*void main() DS1302_Initial(); /初始化DS1302 DS1302_SetTime(init); /设置初始时间 DS1302_GetTime(now); /读取当前时间 while (1);*/*延时X微秒(STC12C5A60S212M)不同的工作环境,需要调整此函数此延时函数是使用1T的指

4、令周期进行计算,与传统的12T的MCU不同*/void Delay() _nop_(); _nop_();/*从DS1302读1字节数据*/BYTE DS1302_ReadByte() BYTE i; BYTE dat = 0; for (i=0; i<8; i+) /8位计数器 SCLK = 0; /时钟线拉低Delay(); /延时等待 dat >>= 1; /数据右移一位if (IO) dat |= 0x80; /读取数据SCLK = 1; /时钟线拉高Delay(); /延时等待 return dat;/*向DS1302写1字节数据*/void DS1302_Writ

5、eByte(BYTE dat) char i; for (i=0; i<8; i+) /8位计数器 SCLK = 0; /时钟线拉低 Delay(); /延时等待 dat >>= 1; /移出数据 IO = CY; /送出到端口 SCLK = 1; /时钟线拉高 Delay(); /延时等待 /*读DS1302某地址的的数据*/BYTE DS1302_ReadData(BYTE addr) BYTE dat; RST = 0; Delay(); SCLK = 0; Delay(); RST = 1; Delay(); DS1302_WriteByte(addr); /写地址

6、dat = DS1302_ReadByte(); /读数据 SCLK = 1; RST = 0; return dat;/*往DS1302的某个地址写入数据*/void DS1302_WriteData(BYTE addr, BYTE dat) RST = 0; Delay(); SCLK = 0; Delay(); RST = 1; Delay(); DS1302_WriteByte(addr); /写地址 DS1302_WriteByte(dat); /写数据 SCLK = 1; RST = 0;/*写入初始时间*/void DS1302_SetTime(BYTE *p) BYTE add

7、r = 0x80; BYTE n = 7; DS1302_WriteData(0x8e, 0x00); /允许写操作 while (n-) DS1302_WriteData(addr, *p+); addr += 2; DS1302_WriteData(0x8e, 0x80); /写保护/*读取当前时间*/void DS1302_GetTime(BYTE *p) BYTE addr = 0x81; BYTE n = 7; while (n-) *p+ = DS1302_ReadData(addr); addr += 2; /*初始化DS1302*/void DS1302_Initial() R

8、ST = 0; SCLK = 0; DS1302_WriteData(0x8e, 0x00); /允许写操作 DS1302_WriteData(0x80, 0x00); /时钟启动 DS1302_WriteData(0x90, 0xa6); /一个二极管4K电阻充电 DS1302_WriteData(0x8e, 0x80); /写保护uchar Read_LCD_State() uchar state;RS=0;RW=1;EN=1;DelayMS(1);state=P0;EN = 0;DelayMS(1);return state;void LCD_Busy_Wait() while(Read

9、_LCD_State()&0x80)=0x80);DelayMS(5);void Write_LCD_Data(uchar dat) LCD_Busy_Wait();RS=1;RW=0;EN=0;P0=dat;EN=1;DelayMS(1);EN=0;void Write_LCD_Command(uchar cmd) LCD_Busy_Wait();RS=0;RW=0;EN=0;P0=cmd;EN=1;DelayMS(1);EN=0;void Init_LCD() Write_LCD_Command(0x38);DelayMS(1);Write_LCD_Command(0x01);De

10、layMS(1);Write_LCD_Command(0x06);DelayMS(1);Write_LCD_Command(0x0c);DelayMS(1);void Set_LCD_POS(uchar p) Write_LCD_Command(p|0x80);void Display_LCD_String(uchar p,uchar *s) uchar i;Set_LCD_POS(p);for(i=0;i<16;i+)Write_LCD_Data(si);DelayMS(1); void Format_DateTime(uchar d,uchar *a) a0=d/10+'0'a1=d%10+'0'void main() Init_LCD();while(1) DS1302_GetTime(now); Format_DateTime(DateTime6,LCD_DSY_BUFFER1+5);Format_DateTime(DateTime4,LCD_DSY_BUFFER1+8);Format_DateTime(DateTime3,LCD_DSY_BUFFER1+11);strcpy(LCD_DSY_BUFFER1+13,WEEKDateTime5);Format_DateTime(DateTime2,LCD_DSY_BUFFER1+5);