51单片机+带字库液晶12864+DS1302数字时钟C源程序(无按键修改功能)

1、 51单片机+带字库液晶12864+DS1302数字时钟C源程序无按键修改功能2021-10-19 16:47经过两天的搜索与调试，在别人程序的根底上，不断修改，终于调试成功了这个程序。目前还不能修改时间与日期，只是以预定时间以始。适用于开发板：51单片机AT89S52+带字库液晶12864(ST7920)+DS1302(实时时钟实现功能：简单，数字时钟+日期以后会不断完美。C语言源程序如下：#include <reg52.h>#include <intrins.h>#define uchar unsigned char#define uint unsigned int

2、/*DS1302 端口设置 */sbit SCK=P36;        /DS1302时钟sbit SDA=P34;      /DS1302 IOsbit RST = P35;   / DS1302复位bit ReadRTC_Flag;      /读DS1302全局变量/* 12864端口定义*/#define LCD_data P0     

3、0;       /带字库液晶12864数据口sbit LCD_RS = P24;            /存放器选择输入 sbit LCD_RW = P25;            /液晶读/写控制sbit LCD_EN = P26;     /液晶使能控制sbit  

4、;  PSB=P21;          /并口控制sbit    RES=P23;uchar code dis1 = " 电子设计天地"        /液晶显示的汉字uchar code dis2 = "有志者，事竟成!"uchar code dis4 = '0','1','2','3',&

5、#39;4','5','6','7','8','9'unsigned char temp;#define delayNOP(); _nop_();_nop_();_nop_();_nop_();void lcd_pos(uchar X,uchar Y); /确定显示位置unsigned char l_tmpdate7=0,7,16,19,10,1,9;/秒分时日月周年09-10-19 16:07:00code unsigned char write_rtc_address7=0x80,0x82,0x84,0

6、x86,0x88,0x8a,0x8c; /秒分时日月周年 最低位读写位code unsigned char read_rtc_address7=0x81,0x83,0x85,0x87,0x89,0x8b,0x8d; void Write_Ds1302_byte(unsigned char temp); void Write_Ds1302( unsigned char address,unsigned char dat );unsigned char Read_Ds1302 ( unsigned char address );void Read_RTC(void);/read RTC void

7、Set_RTC(void); /set RTC void InitTIMER0(void);/inital timer0/*/*                                       &#

8、160;                         */* 延时函数                        

9、;                               */*                   &

10、#160;                                             */*/void    del

11、ay(unsigned int m)            /延时程序                                    

12、;     unsigned int i,j;                      for(i=0;i<m;i+)                  

13、0;      for(j=0;j<10;j+);                   /*/*                      &#

14、160;                                          */*检查LCD忙状态      &#

15、160;                                             */*lcd_busy为1时，忙，等待。lcd-busy为0时

16、,闲，可写指令与数据。      */*                                          

17、60;                      */*/bit lcd_busy()                          &

18、#160;   bit result;    LCD_RS = 0;    LCD_RW = 1;    LCD_EN = 1;    delayNOP();    result = (bit)(P0&0x80);    LCD_EN = 0;    return(result); /*/*      

19、;                                                  

20、;         */*写指令数据到LCD                                       

21、0;          */*RS=L，RW=L，E=高脉冲，D0-D7=指令码。                             */*       

22、                                                  

23、        */*/void lcd_wcmd(uchar cmd)                             while(lcd_busy();    LCD_RS = 0;   

24、 LCD_RW = 0;    LCD_EN = 0;    _nop_();    _nop_();     P0 = cmd;    delay(1);    LCD_EN = 1;    delay(1);    LCD_EN = 0; /*/*         

25、                                                  

26、      */*写显示数据到LCD                                           

27、;       */*RS=H，RW=L，E=高脉冲，D0-D7=数据。                               */*        &#

28、160;                                                 &#

29、160;      */*/void lcd_wdat(uchar dat)                             while(lcd_busy();    LCD_RS = 1;    LCD_RW

30、= 0;    LCD_EN = 0;    P0 = dat;    delayNOP();    LCD_EN = 1;    delay(1);    LCD_EN = 0; /*/*                   &

31、#160;                                             */* LCD初始化设定   

32、                                               */*   &#

33、160;                                                 &#

34、160;           */*/void lcd_init() P0=0xFF;P2=0xFF;delay(40);PSB=1;             /并口方式。delay(1);RES=0;delay(1);RES=1;delay(10);lcd_wcmd(0x30);delay(100);lcd_wcmd(0x30);delay(37);lcd_wcmd(0x08

35、);delay(100);lcd_wcmd(0x10);delay(100);lcd_wcmd(0x0C);      /显示开，关光标    delay(100);    lcd_wcmd(0x01);      /去除LCD的显示内容    delay(100);lcd_wcmd(0x06);delay(100);void main()uchar i;InitTIMER0();  

36、Set_RTC();   lcd_init();                  /初始化LCD             while(1)if(ReadRTC_Flag)   ReadRTC_Flag=0;Read_RTC();lcd_pos(0,0);  

37、           /设置显示位置为第一行的第1个字符     i = 0;    while(dis1i != '0')                         

38、     /显示字符       lcd_wdat(dis1i);       i+;         lcd_pos(1,0);             /设置显示位置为第二行的第1个字符     i = 0

39、;    while(dis2i != '0')            lcd_wdat(dis2i);      /显示字符       i+;     lcd_pos(2,0); lcd_wdat(dis4l_tmpdate6/16);     &#

40、160;    /DS1302是BCD码，进行处理得到十位与个位数。lcd_pos(2,1);                  lcd_wdat(dis4l_tmpdate6%16);lcd_pos(2,2);                  l

41、cd_wdat('-');lcd_pos(2,3);                  lcd_wdat(dis4l_tmpdate4/16);lcd_pos(2,4);                  lcd_wdat(dis4l_tmpdate4%16);l

42、cd_pos(2,5);                  lcd_wdat('-');lcd_pos(2,6);                  lcd_wdat(dis4l_tmpdate3/16);lcd_pos(2,7);  

43、0;               lcd_wdat(dis4l_tmpdate3%16);           /设置显示位置为第三行的第1个字符    lcd_pos(3,0);             /设置显示位置

44、为第四行的第1个字符     lcd_wdat(dis4l_tmpdate2/16);lcd_pos(3,1);                  lcd_wdat(dis4l_tmpdate2%16);lcd_pos(3,2);               

45、   lcd_wdat(':');lcd_pos(3,3);                  lcd_wdat(dis4l_tmpdate1/16);lcd_pos(3,4);                  lcd_wdat(dis4l_

46、tmpdate1%16);lcd_pos(3,5);                  lcd_wdat(':');lcd_pos(3,6);                  lcd_wdat(dis4l_tmpdate0/16);lcd_pos(3,7);&#

47、160;                 lcd_wdat(dis4l_tmpdate0%16);  /*/*                          

48、0;                            */* 设定显示位置                     

49、;                     */*                             &

50、#160;                         */*/void lcd_pos(uchar X,uchar Y)                   

51、60;         uchar pos;   if (X=0)     X=0x80;   else if (X=1)     X=0x90;   else if (X=2)     X=0x88;   else if (X=3)     X=0x98;   pos

52、 = X+Y ;    lcd_wcmd(pos);     /显示地址void InitTIMER0(void)TMOD|=0x01;/定时器设置 16位TH0=0xef;/初始化值TL0=0xf0;ET0=1;TR0=1;EA=1;void Write_Ds1302_Byte(unsigned char temp) unsigned char i;for (i=0;i<8;i+)     /循环8次 写入数据    SCK=0;   &

53、#160; SDA=temp&0x01;     /每次传输低字节      temp>>=1;    /右移一位     SCK=1;     /*/void Write_Ds1302( unsigned char address,unsigned char dat )        RST=0;_nop_();  

54、 SCK=0;_nop_();   RST=1;    _nop_();   /启动   Write_Ds1302_Byte(address); /发送地址   Write_Ds1302_Byte(dat);   /发送数据   RST=0;    /恢复/*/unsigned char Read_Ds1302 ( unsigned char address )   unsigned char i,temp=0x00;   RST=0;_nop_();   SCK=0;_nop_();   RST=1;_nop_();   Write_Ds1302_Byte(address