12864+DS1302时钟+18B20温度计.docx

1、12864+DS1302时钟+18B20温度计#include #include #define uint unsigned int#define uchar unsigned charsbit DS1302_CLK = P10; /实时时钟时钟线引脚 sbit DS1302_IO = P11; /实时时钟数据线引脚 sbit DS1302_RST = P12; /实时时钟复位线引脚sbit DQ = P33; /温度传送数据IO口sbit ACC0 = ACC0;sbit ACC7 = ACC7;uchar hide_sec,hide_min,hide_hour,hide_day,hide_

2、week,hide_month,hide_year; /秒,分,时到日,月,年位闪的计数sbit Set = P14; /模式切换键 对应实验板K5sbit Up = P15; /加法按钮 对应实验板K6sbit Down= P16; /减法按钮 对应实验板K7sbit out = P17; /立刻跳出调整模式按钮 对应实验板K8uchar done,count,temp,up_flag,down_flag;uchar temp_value,temp1_value; /temp_value温度值正数部分 temp1_value温度值小数部分 uchar TempBuffer8,week_val

3、ue3;void show_time(); /液晶显示程序/*/12864液晶显示部分子程序模块/*sbit rs = P20;sbit rw = P21;sbit e = P22;#define lcddata P0sbit busy=P07; /lcd busy bitvoid wr_d_lcd(uchar content);void wr_i_lcd(uchar content);void clrram_lcd (void);void init_lcd(void);void busy_lcd(void);void rev_row_lcd(uchar row);void rev_co_lc

4、d(uchar row,uchar col,uchar mode);void clr_lcd(void);void wr_co_lcd(uchar row,uchar col,uchar lcddata1,uchar lcddtta2);void wr_row_lcd(uchar row,char *p);/*/液晶初始化/*void init_lcd(void) wr_i_lcd(0x06); /*光标的移动方向*/ wr_i_lcd(0x0c); /*开显示，关游标*/*/填充液晶DDRAM全为空格/*void clrram_lcd (void) wr_i_lcd(0x30); wr_i_

5、lcd(0x01);/*/对液晶写数据/content为要写入的数据/*void wr_d_lcd(uchar content) busy_lcd(); rs=1; rw=0; lcddata=content; e=1; ; e=0;/*/对液晶写指令/content为要写入的指令代码/*void wr_i_lcd(uchar content) busy_lcd(); rs=0; rw=0; lcddata=content; e=1; ; e=0;/*/液晶检测忙状态/在写入之前必须执行/*void busy_lcd(void) lcddata=0xff; rs=0; rw=1; e =1;

6、while(busy=1); e =0;/*/指定要显示字符的坐标/*void gotoxy(unsigned char y, unsigned char x) if(y=1) wr_i_lcd(0x80|x); if(y=2) wr_i_lcd(0x90|x); if(y=3) wr_i_lcd(0x80|x)+8); if(y=4) wr_i_lcd(0x90|x)+8);/*/液晶显示字符串程序/*void print(uchar *str) while(*str!=0) wr_d_lcd(*str); str+; /*/DS1302时钟部分子程序模块/*typedef struct _

7、SYSTEMTIME_ uchar Second; uchar Minute; uchar Hour; uchar Week; uchar Day; uchar Month; uchar Year; uchar DateString11; uchar TimeString9;SYSTEMTIME; /定义的时间类型SYSTEMTIME CurrentTime;#define AM(X) X#define PM(X) (X+12) / 转成24小时制#define DS1302_SECOND 0x80 /时钟芯片的寄存器位置,存放时间#define DS1302_MINUTE 0x82#defi

8、ne DS1302_HOUR 0x84 #define DS1302_WEEK 0x8A#define DS1302_DAY 0x86#define DS1302_MONTH 0x88#define DS1302_YEAR 0x8C /*/实时时钟写入一字节(内部函数)/*void DS1302InputByte(uchar d) uchar i; ACC = d; for(i=8; i0; i-) DS1302_IO = ACC0; /相当于汇编中的 RRC DS1302_CLK = 1; DS1302_CLK = 0; ACC = ACC 1; /*/实时时钟读取一字节(内部函数)/*uc

9、har DS1302OutputByte(void) uchar i; for(i=8; i0; i-) ACC = ACC 1; /相当于汇编中的 RRC ACC7 = DS1302_IO; DS1302_CLK = 1; DS1302_CLK = 0; return(ACC); /*/ucAddr: DS1302地址, ucData: 要写的数据/*void Write1302(uchar ucAddr, uchar ucDa) DS1302_RST = 0; DS1302_CLK = 0; DS1302_RST = 1; DS1302InputByte(ucAddr); / 地址，命令

10、DS1302InputByte(ucDa); / 写1Byte数据 DS1302_CLK = 1; DS1302_RST = 0; /*/读取DS1302某地址的数据/*uchar Read1302(uchar ucAddr) uchar ucData; DS1302_RST = 0; DS1302_CLK = 0; DS1302_RST = 1; DS1302InputByte(ucAddr|0x01); / 地址，命令 ucData = DS1302OutputByte(); / 读1Byte数据 DS1302_CLK = 1; DS1302_RST = 0; return(ucData)

11、;/*/获取时钟芯片的时钟数据到自定义的结构型数组/*void DS1302_GetTime(SYSTEMTIME *Time) uchar ReadValue; ReadValue = Read1302(DS1302_SECOND); Time-Second = (ReadValue&0x70)4)*10 + (ReadValue&0x0F);/转换为相应的10进制数 ReadValue = Read1302(DS1302_MINUTE); Time-Minute = (ReadValue&0x70)4)*10 + (ReadValue&0x0F); ReadValue = Read1302

12、(DS1302_HOUR); Time-Hour = (ReadValue&0x70)4)*10 + (ReadValue&0x0F); ReadValue = Read1302(DS1302_DAY); Time-Day = (ReadValue&0x70)4)*10 + (ReadValue&0x0F); ReadValue = Read1302(DS1302_WEEK); Time-Week = (ReadValue&0x10)4)*10 + (ReadValue&0x0F); ReadValue = Read1302(DS1302_MONTH); Time-Month = (ReadV

13、alue&0x70)4)*10 + (ReadValue&0x0F); ReadValue = Read1302(DS1302_YEAR); Time-Year = (ReadValue&0xf0)4)*10 + (ReadValue&0x0F); /*/将时间年,月,日,星期数据转换成液/晶显示字符串,放到数组里DateString/*void DateToStr(SYSTEMTIME *Time) uchar tab =0XD2,0XBB,0XB6,0XFE,0XC8,0XFD,0XCB,0XC4,0XCE,0XE5,0XC1,0XF9,0XC8,0XD5; if(hide_year2)

14、/这里的if,else语句都是判断位闪烁,2就不显示,输出字符串为 2007/07/22 Time-DateString0 = 2; Time-DateString1 = 0; Time-DateString2 = Time-Year/10 + 0; Time-DateString3 = Time-Year%10 + 0; else Time-DateString0 = ; Time-DateString1 = ; Time-DateString2 = ; Time-DateString3 = ; Time-DateString4=-; if(hide_monthDateString5 = T

15、ime-Month/10 + 0; Time-DateString6 = Time-Month%10 + 0; else Time-DateString5 = ; Time-DateString6 = ; Time-DateString7=-; if(hide_dayDateString8 = Time-Day/10 + 0; Time-DateString9 = Time-Day%10 + 0; else Time-DateString8 = ; Time-DateString9 = ; if(hide_weekWeek%10)-2; /星期的数据另外放到 week_value数组里,跟年,

16、月,日的分开存放,因为等一下要在最后显示 week_value1 =tab2*(Time-Week%10)-1; else week_value0 = ; week_value1= ; week_value2 = 0; Time-DateString10 = 0; /字符串末尾加 0 ,判断结束字符/*/将时,分,秒数据转换成液晶/显示字符放到数组 TimeString/*void TimeToStr(SYSTEMTIME *Time) if(hide_hourTimeString0 = Time-Hour/10 + 0; Time-TimeString1 = Time-Hour%10 + 0

17、; else Time-TimeString0 = ; Time-TimeString1 = ; Time-TimeString2 = :; if(hide_minTimeString3 = Time-Minute/10 + 0; Time-TimeString4 = Time-Minute%10 + 0; else Time-TimeString3 = ; Time-TimeString4 = ; Time-TimeString5 = :; if(hide_secTimeString6 = Time-Second/10 + 0; Time-TimeString7 = Time-Second%

18、10 + 0; else Time-TimeString6 = ; Time-TimeString7 = ; Time-TimeString8 = 0;/*/时钟芯片初始化/*void Initial_DS1302(void) uchar Second=Read1302(DS1302_SECOND); if(Second&0x80) /判断时钟芯片是否关闭 Write1302(0x8e,0x00); /写入允许 Write1302(0x8c,0x07); /以下写入初始化时间 日期:07/07/25.星期: 3. 时间: 23:59:55 Write1302(0x88,0x07); Write

19、1302(0x86,0x25); Write1302(0x8a,0x07); Write1302(0x84,0x23); Write1302(0x82,0x59); Write1302(0x80,0x55); Write1302(0x8e,0x80); /禁止写入 /*/ds18b20子程序模块/*/*ds18b20子程序*/*ds18b20延迟子函数（晶振12MHz ）*/ void delay_18B20(unsigned int i) while(i-);/*ds18b20初始化函数*/void Init_DS18B20(void) unsigned char x=0; DQ = 1;

20、/DQ复位 delay_18B20(8); /稍做延时 DQ = 0; /单片机将DQ拉低 delay_18B20(40); /精确延时 大于 480us DQ = 1; /拉高总线 delay_18B20(7); x=DQ; /稍做延时后 如果x=0则初始化成功 x=1则初始化失败 delay_18B20(10);/*ds18b20读一个字节*/ uchar ReadOneChar(void) uchar i=0; uchar dat = 0; for (i=8;i0;i-) DQ = 0; / 给脉冲信号 dat=1; DQ = 1; / 给脉冲信号 if(DQ) dat|=0x80; d

21、elay_18B20(4); return(dat);/*ds18b20写一个字节*/ void WriteOneChar(uchar dat) uchar i=0; for (i=8; i0; i-) DQ = 0; DQ = dat&0x01; delay_18B20(5); DQ = 1; dat=1; /*读取ds18b20当前温度*/void ReadTemp(void) uchar a=0; uchar b=0; uchar t; Init_DS18B20(); WriteOneChar(0xCC); / 跳过读序号列号的操作 WriteOneChar(0x44); / 启动温度转

22、换 delay_18B20(100); / this message is wery important Init_DS18B20(); WriteOneChar(0xCC); /跳过读序号列号的操作 WriteOneChar(0xBE); /读取温度寄存器等（共可读9个寄存器） 前两个就是温度 delay_18B20(50); a=ReadOneChar(); /读取温度值低位 b=ReadOneChar(); /读取温度值高位 t=b&0xf8; if(t) TempBuffer0=:; TempBuffer1=-; temp_value=b4; temp_value=temp_value+1; temp1_value=a&0x0f; else temp_value=b4; temp1_value=a&0x0f; TempBuffer0=:; TempBuffer1=temp_value/100+0; /百位 if(TempBuffer1=1) TempBuffer1=1; else TempBuffer1= ; void temp_to_str() /温度数据转换成液晶字符显示 TempBuffer2=temp_value%100/10+0; /十位 TempBuffer3=temp_value%10+0; /个位 Temp