1、基于ds1302的51单片机简易实时时钟1602显示源程序=主程序=#include #include ds1302.h#include LCD1602.hvoid change();uchar times9;uchar date9;main()LCD_init();/LCD初始化init_1302(time_1302);gotoxy(1,1);LCD_display(Time:);gotoxy(1,2);LCD_display(Date:);times8=0;/date8=0;while(1)get_1302(time_1302);change();gotoxy(7,1);LCD_displ
2、ay(times);gotoxy(7,2);LCD_display(date);/*= 转 换 子 程 序=*/void change() / 时 间 的 转 换times0=time_13022/10+0;times1=time_13022%10+0;times2=:;times3=time_13021/10+0;times4=time_13021%10+0;times5=:;times6=time_13020/10+0;times7=time_13020%10+0;/ 日 期 的 转 换date0=time_13026/10+0;date1=time_13026%10+0;date2=-;
3、date3=time_13024/10+0;date4=time_13024%10+0;date5=-;date6=time_13023/10+0;date7=time_13023%10+0;=DS1302驱动程序=#define uchar unsigned charuchar time_13027=0x00,0x00,0x00,0x03,0x07,0x03,0x08;/设置时间初始值数组 / 秒 分 时 号 月份 星期 年sbit T_IO=P10; /与硬件相关的连线 clk为DS1302的时钟信号线sbit T_CLK=P11; /DAT为DS1302的I/O数据线sbit T_RST
4、=P12; /RST为DS1302的RST信号线 uchar bdata datbyte;sbit datbyte0=datbyte0;sbit datbyte7=datbyte7;void get_1302(uchar time);void write_ds1302(uchar dat);uchar r_1302(uchar add);void w_1302(uchar add,uchar dat);uchar read_ds1302(void);void init_1302(uchar *time);/*= D S 1 3 0 2 初 始 化=*/void init_1302(uchar
5、*time)uchar i, add;/uchar time_bcd7;add=0x80;/0写入，1读出w_1302(0x8e,0x00);for(i=0;i7;i+)w_1302(add,*time); add+=2; time+; w_1302(0x8e,0x80);/=/ 读取当前时间/=void get_1302(uchar time)uchar i;uchar add=0x81;w_1302(0x8e,0x00);for(i=0;i7;i+) timei=r_1302(add); add+=2; w_1302(0x8e,0x80); /*= DS1302写入一个字节（上升沿有效）=
6、*/void write_ds1302(uchar dat)uchar i;datbyte=dat;for(i=0;i1;/*= DS1302读取一个字节（下降沿有效）=*/uchar read_ds1302(void)uchar i;for(i=0;i1; datbyte7=T_IO; T_CLK=1; T_CLK=0; return(datbyte);/*= 指定位置读取数据=*/uchar r_1302(uchar add)uchar temp,dat1,dat2;T_RST=0;T_CLK=0;T_RST=1;write_ds1302(add);temp=read_ds1302();T
7、_CLK=1;T_RST=0;dat1=temp/16;dat2=temp%16;temp=dat1*10+dat2;return(temp);/*= 指定位置写入数据=*/void w_1302(uchar add,uchar dat)T_RST=0;T_CLK=0;T_RST=1;write_ds1302(add);write_ds1302(dat/100;i-) for(j=0;j2;j+);/=写指令函数=void LCD_write_command(uchar command)LCD_DB=command;LCD_RS=0;/指令LCD_RW=0;/写入LCD_E=1;LCD_E=0
8、;delay_lcd(1);/等待执行完毕 。/=写数据函数=void LCD_write_data(uchar dat)LCD_DB=dat;LCD_RS=1;/数据寄存器LCD_RW=0;/写入数据LCD_E=1;LCD_E=0;delay_lcd(1);/等待程序执行完毕 。/*=显示一个字符子函数=void LCD_disp_char(uchar x,uchar y, uchar dat) uchar address; if(y=1) address=0x80+x; else address=0xc0+x; LCD_write_command(address); LCD_write_d
9、ata(dat); =*/=延时1= void delay1(uint x) uint i,j; for(j=0;jx;j+) for(i=0;i100;i+);/=初始化函数=void LCD_init(void)LCD_write_command(0x38);/设置8位格式，2行，5*7LCD_write_command(0x0c);/整体显示，关光标，不闪烁LCD_write_command(0x06);/设定输入方式，增量不移位LCD_write_command(0x01);/清屏显示delay_lcd(200);/=光标定位=void gotoxy(uchar x,uchar y)uchar address; if(y=1) address=0x80+x; else address=0xc0+x; LCD_write_command(address);/=显示一个字符串=void LCD_display(uchar *dat) while(*dat!=0) LCD_write_data(*dat); dat+;
