基于51单片机的DS1302+LCD12864+DS18B20小综合.docx

1、基于51单片机的DS1302+LCD12864+DS18B20小综合#include#include#define uint unsigned int#define uchar unsigned char#define first_line 0x80#define second_line 0x90#define third_line 0x88#define forth_line 0x98#define sec_addr_pos 0x04#define min_addr_pos 0x02#define hor_addr_pos 0x00#define day_addr_pos 0x05#defi

2、ne mon_addr_pos 0x03#define yer_addr_pos 0x01#define wek_addr_pos 0x02#define sbl_addr_pos 0x04#define Tep_addr_pos 0x05#define Tmp_addr_pos 0x06uchar code line_one=2016年10月31日 ;uchar code line_two=14：22：45 ;uchar code line_three=星期五 - 23 ;uchar str_wek=一二三四五六日;char second,minute,hour,day,week,month

3、,year;uchar key_flag,mode_cnt;uint temperature,symbol;/用于存储DS18B20采集的整个数据uchar DS18B20_H;/用于存储DS18B20数据采集的整数部分uchar DS18B20_L;/用于存储DS18B20数据采集的小数部分uchar init_18B20_fail;sfr LCD_DATA=0x80;sbit LCD_EN=P27;sbit LCD_RS=P26;sbit LCD_RW=P25;sbit DS_CLK=P36;sbit DS_RST=P35;sbit DS_IO=P34;sbit ACC0=ACC0;sbi

4、t ACC7=ACC7;sbit key_1=P24;sbit key_2=P23;sbit key_3=P22;sbit DQ=P37; void delay_ms(uint ms);void delay_us(uint us);bit busy(void);void write_command(uchar command);void write_data(uchar dat);void lcd_pos(uchar x,uchar y);void LCD_init(void);void Input_1byte(uchar TD);uchar Output_1byte(void);uchar

5、Read_DS1302(uchar DS_ADD);void write_DS1302(uchar DS_ADD,uchar DS_DATE);void write_time(uchar addr,uchar num);uchar BCD_to_Dec(uchar num);void write_week(uchar num);void write_date(uchar addr,uchar num);uchar readsecond(void);uchar readminute(void);uchar readhour(void);uchar readday(void);uchar read

6、month(void);uchar readweek(void);uchar readyear(void);void readtime(void);void DS1302_init(void);void key_scan(void);uchar DS18B20_read_byte(void);void DS18B20_write_byte(uchar byte);uchar DS18B20_Init(void);uint read_temperature(void);void write_temp(uchar temp_h);void write_symbol(uchar addr,uchar

7、 symbol);void display_18B20_err(void);void main(void) key_flag=0; second=20; minute=30; hour=10; day=31; week=3; month=12; year=16; LCD_init(); /*while(1) write_date(day_addr_pos,day); write_date(mon_addr_pos,month); write_date(yer_addr_pos,year); write_time(sec_addr_pos,second); write_time(min_addr

8、_pos,minute); write_time(hor_addr_pos,hour); write_week(week); */ if(!(Read_DS1302(0x8E)&0x80) DS1302_init(); while(1) key_scan(); if(key_flag=0) second=Read_DS1302(0x81); write_time(sec_addr_pos,BCD_to_Dec(second); minute=Read_DS1302(0x83); write_time(min_addr_pos,BCD_to_Dec(minute); hour=Read_DS13

9、02(0x85); write_time(hor_addr_pos,BCD_to_Dec(hour); week=Read_DS1302(0x8B); write_week(week); day=Read_DS1302(0x87); write_date(day_addr_pos,BCD_to_Dec(day); month=Read_DS1302(0x89); write_date(mon_addr_pos,BCD_to_Dec(month); year=Read_DS1302(0x8D); write_date(yer_addr_pos,BCD_to_Dec(year); readtime

10、();/读出十进制数，提供给按键进行数据的+/-的处理 temperature=read_temperature(); init_18B20_fail=DS18B20_Init(); if(init_18B20_fail=0) /temperature=read_temperature(); if(temperature&0x8000)=0x8000)/判断读取的温度是正温度还是负温度 symbol=0x2D; /write_symbol(0x0A,0x2C);/显示负号 temperature=temperature+1;/负温度时处理，原数取反再加1 else symbol=0xfe; /

11、write_symbol(0x0A,0xfe);/不显示正号 /write_symbol(0x0A,symbol); DS18B20_H=(temperature4)&0x7f;/取温度读数的整数部分 DS18B20_L=temperature&0x0f;/取温度读数的小数部分 write_symbol(sbl_addr_pos,symbol); write_temp(DS18B20_H); else display_18B20_err(); void delay_us(uint us) while(us-);void delay_ms(uint ms) uchar i; while(ms-)

12、 for(i=250;i0;i-) _nop_(); _nop_(); _nop_(); _nop_(); bit busy(void) bit result; LCD_RS=0; LCD_RW=1; LCD_EN=1; result=(bit)(LCD_DATA&0x80); LCD_EN=0; return result;void write_command(uchar command) while(busy(); LCD_RS=0; LCD_RW=0; LCD_EN=1; delay_us(1); LCD_DATA=command; delay_us(1); LCD_EN=0;void

13、write_data(uchar dat) while(busy(); LCD_RS=1; LCD_RW=0; LCD_EN=1; delay_us(1); LCD_DATA=dat; delay_us(1); LCD_EN=0;void lcd_pos(uchar x,uchar y) 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=x+y; write_command(pos);void LCD_init(void) uchar i; write_co

14、mmand(0x30); delay_ms(1); write_command(0x30); delay_ms(1); write_command(0x0C); delay_ms(1); write_command(0x01); delay_ms(1); write_command(0x06); delay_ms(1); write_command(first_line); for(i=0;i16;i+) write_data(line_onei); write_command(second_line); for(i=0;i16;i+) write_data(line_twoi); write

15、_command(third_line); for(i=0;i0;i-) DS_IO=ACC0; DS_CLK=1; DS_CLK=0; ACC=ACC1; uchar Output_1byte(void) uchar i; for(i=8;i0;i-) ACC=ACC1; ACC7=DS_IO; DS_CLK=1; DS_CLK=0; return(ACC);uchar Read_DS1302(uchar DS_ADD) uchar DS_INF; DS_RST=0; DS_CLK=0; DS_RST=1; Input_1byte(DS_ADD); DS_INF=Output_1byte()

16、; DS_CLK=1; DS_RST=0; return(DS_INF); void write_DS1302(uchar DS_ADD,uchar DS_DATE) DS_RST=0; DS_CLK=0; DS_RST=1; Input_1byte(DS_ADD); Input_1byte(DS_DATE); DS_CLK=1; DS_RST=0;void DS1302_init(void) second=57; minute=59; hour=23; day=30; month=3; week=5; year=16; write_DS1302(0x8E,0x00);/NWP write_D

17、S1302(0x80,(second/10)4|(second%10); write_DS1302(0x82,(minute/10)4|(minute%10); write_DS1302(0x84,(hour/10)4|(hour%10); write_DS1302(0x86,(day/10)4|(day%10); write_DS1302(0x88,(month/10)4|(month%10); write_DS1302(0x8A,(week/10)4|(week%10); write_DS1302(0x8C,(year/10)4; NUM_L=num&0x0f; NUM=(NUM_H*10

18、)+NUM_L; return NUM;void write_week(uchar num) uchar i; switch(num) case 1:write_command(third_line+wek_addr_pos); for(i=0;i2;i+) write_data(str_weki); delay_ms(5); break; case 2:write_command(third_line+wek_addr_pos); for(i=2;i4;i+) write_data(str_weki); delay_ms(5); break; case 3:write_command(thi

19、rd_line+wek_addr_pos); for(i=4;i6;i+) write_data(str_weki); delay_ms(5); break; case 4:write_command(third_line+wek_addr_pos); for(i=6;i8;i+) write_data(str_weki); delay_ms(5); break; case 5:write_command(third_line+wek_addr_pos); for(i=8;i10;i+) write_data(str_weki); delay_ms(5); break; case 6:writ

20、e_command(third_line+wek_addr_pos); for(i=10;i12;i+) write_data(str_weki); delay_ms(5); break; case 7:write_command(third_line+wek_addr_pos); for(i=12;i4)*10+(dat&0x0f); return second;/*读出分的十进制数*/uchar readminute(void) uchar dat; dat=Read_DS1302(0x83); minute=(dat&0x70)4)*10+(dat&0x0f); return minut

21、e;/*读出小时的十进制数*/uchar readhour(void) uchar dat; dat=Read_DS1302(0x85); hour=(dat&0x70)4)*10+(dat&0x0f); return hour;/*读出天的十进制数*/uchar readday(void) uchar dat; dat=Read_DS1302(0x87); day=(dat&0x70)4)*10+(dat&0x0f); return day;/*读出月的十进制数*/uchar readmonth(void) uchar dat; dat=Read_DS1302(0x89); month=(d

22、at&0x70)4)*10+(dat&0x0f); return month;/*读出周的十进制数*/uchar readweek(void) uchar dat; dat=Read_DS1302(0x8b); week=(dat&0x70)4)*10+(dat&0x0f); return week;/*读出年的十进制数*/uchar readyear(void) uchar dat; dat=Read_DS1302(0x8d); year=(dat&0xf0)4)*10+(dat&0x0f); return year;void key_scan(void) if(key_1=0) delay

23、_ms(5); if(key_1=0) while(!key_1); mode_cnt+; key_flag=1; write_DS1302(0x8E,0x00); write_DS1302(0x80,0x80); write_DS1302(0x8E,0x80); if(mode_cnt=8) key_flag=0; mode_cnt=0; write_command(0x0C); write_DS1302(0x8E,0x00); write_DS1302(0x80,0x00); write_DS1302(0x80,(second/10)4|(second%10); write_DS1302(

24、0x82,(minute/10)4|(minute%10); write_DS1302(0x84,(hour/10)4|(hour%10); write_DS1302(0x86,(day/10)4|(day%10); write_DS1302(0x88,(month/10)4|(month%10); write_DS1302(0x8A,(week/10)4|(week%10); write_DS1302(0x8C,(year/10)4|(year%10); /write_DS1302(0x80,0x00); write_DS1302(0x8E,0x80); switch(mode_cnt) case 7: write_