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根據(jù)電路圖，編寫程序使得LCD1602顯示器顯示DS1302時(shí)鐘芯片當(dāng)前年、月、日、十、分和秒信息。
附件包含對應(yīng)仿真和C程序
單片機(jī)源程序如下:
- #include <reg52.h>
- #include <intrins.h>
- #include <string.h>
- #define uint unsigned int
- #define uchar unsigned char
- sbit IO=P1^1;
- sbit SCLK=P1^0;
- sbit RST=P1^2;
- sbit RS=P2^0;
- sbit RW=P2^1;
- sbit EN=P2^2;
- uchar *WEEK[]=
- {
- "SUN","***","MON","TUS","WEN","THU","FRI","SAT"
- };
- uchar LCD_DSY_BUFFER1[]={"DATE 00-00-00 "};
- uchar LCD_DSY_BUFFER2[]={"TIME 00:00:00 "};
- uchar DateTime[7];
- void DelayMS(uint ms)
- {
- uchar i;
- while(ms--)
- { for(i=0;i<120;i++); }
- }
- void Write_A_Byte_TO_DS1302(uchar x)
- {
- uchar i;
- for(i=0;i<8;i++)
- { IO=x&0x01;SCLK=1;SCLK=0;x>>=1; }
- }
- uchar Get_A_Byte_FROM_DS1302()
- {
- uchar i,b=0x00;
- for(i=0;i<8;i++)
- {
- b |= _crol_((uchar)IO,i);
- SCLK=1;SCLK=0;
- }
- return b/16*10+b%16;
- }
- uchar Read_Data(uchar addr)
- {
- uchar dat;
- RST=0;SCLK=0;RST=1;
- Write_A_Byte_TO_DS1302(addr);
- dat=Get_A_Byte_FROM_DS1302();
- SCLK=1;RST=0;
- return dat;
- }
- void GetTime()
- {
- uchar i,addr=0x81;
- for(i=0;i<7;i++)
- { DateTime[i]=Read_Data(addr);addr+=2; }
- }
- 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_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 dat)
- {
- lcd_busy_wait();
- RS=0;RW=0;EN=0;P0=dat;EN=1;DelayMS(1);
- EN=0;
- }
- void init_lcd()
- {
- write_lcd_command(0x38);
- DelayMS(1);
- write_lcd_command(0x01);
- DelayMS(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(s[i]);
- DelayMS(1);
- }
- }
- void Format_DateTime(uchar d,uchar *a)
- {
- a[0]=d/10+'0';
- a[1]=d%10+'0';
- }
- void main()
- {
- init_lcd();
- while(1)
- {
- GetTime();
- Format_DateTime(DateTime[6],LCD_DSY_BUFFER1+5);
- Format_DateTime(DateTime[4],LCD_DSY_BUFFER1+8);
- Format_DateTime(DateTime[3],LCD_DSY_BUFFER1+11);
- strcpy(LCD_DSY_BUFFER1+13,WEEK[DateTime[5]]);
- Format_DateTime(DateTime[2],LCD_DSY_BUFFER2+5);
- Format_DateTime(DateTime[1],LCD_DSY_BUFFER2+8);
- Format_DateTime(DateTime[0],LCD_DSY_BUFFER2+11);
- Display_LCD_String(0x00,LCD_DSY_BUFFER1);
- Display_LCD_String(0x40,LCD_DSY_BUFFER2);
- }
- }
所有資料51hei提供下載:
萬年歷設(shè)計(jì).zip
(150.13 KB, 下載次數(shù): 25)
2019-12-18 16:46 上傳
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