Ds18b20测温+ds1302时钟+led1602显示模块化编程.doc

战龙啸野QQ1159551878/*Ds18b20测温+ds1302时钟+led1602显示 模块化编程一个。C文件与一个。H文件相对应。一共有9个文件main.c ds18b20.h ds18b20.c ds1302.h ds1302.c lcd1602.h lcd1602.c delay.h delay.c*/ main.c#include#include ds18b20.h#include ds1302.h#include lcd1602.huchar second,minute,hour,day,month,year,count=0; uchar ReadValue,num,time; /按键 sbit menu=P15; /菜单sbit add=P16; /加一sbit dec=P17; /减一void DisplaySecond(uchar x) uchar i,j; i=x/10; j=x%10; write_1602com(0xc7); write_1602dat(0x30+i); write_1602dat(0x30+j); void DisplayMinute(uchar x) uchar i,j; i=x/10; j=x%10; write_1602com(0xc4); write_1602dat(0x30+i); write_1602dat(0x30+j); void DisplayHour(uchar x) uchar i,j; i=x/10; j=x%10; write_1602com(0xc1); write_1602dat(0x30+i); write_1602dat(0x30+j); void DisplayDay(uchar x) uchar i,j; i=x/10; j=x%10; write_1602com(0x89); write_1602dat(0x30+i); write_1602dat(0x30+j); void DisplayMonth(uchar x) uchar i,j; i=x/10; j=x%10; write_1602com(0x86); write_1602dat(0x30+i); write_1602dat(0x30+j); void DisplayYear(uchar x) uchar i,j; i=x/10; j=x%10; write_1602com(0x83); write_1602dat(0x30+i); write_1602dat(0x30+j); void read_date(void) ReadValue = ReadSet1302(0x81); second=(ReadValue&0x70)4)*10 + (ReadValue&0x0F); ReadValue = ReadSet1302(0x83); minute=(ReadValue&0x70)4)*10 + (ReadValue&0x0F); ReadValue = ReadSet1302(0x85); hour=(ReadValue&0x70)4)*10 + (ReadValue&0x0F); ReadValue = ReadSet1302(0x87); day=(ReadValue&0x70)4)*10 + (ReadValue&0x0F); ReadValue = ReadSet1302(0x89); month=(ReadValue&0x70)4)*10 + (ReadValue&0x0F); ReadValue = ReadSet1302(0x8d); year=(ReadValue&0x70)4)*10 + (ReadValue&0x0F); DisplaySecond(second); DisplayMinute(minute); DisplayHour(hour); DisplayDay(day); DisplayMonth(month); DisplayYear(year); void turn_val(char newval,uchar flag,uchar newaddr,uchar s1num) newval=ReadSet1302(newaddr); /读取当前时间 newval=(newval&0x70)4)*10+(newval&0x0f); /将bcd码转换成十进制 if(flag) /判断是加一还是减一 newval+; switch(s1num) case 1: if(newval99) newval=0; DisplayYear(newval); break; case 2: if(newval12) newval=1; DisplayMonth(newval); break; case 3: if(newval31) newval=1; DisplayDay(newval); break; case 4: if(newval23) newval=0; DisplayHour(newval); break; case 5: if(newval59) newval=0; DisplayMinute(newval); break; case 6: if(newval59) newval=0; DisplaySecond(newval); break; default:break; else newval-;switch(s1num) case 1: if(newval=0) newval=99; DisplayYear(newval); break; case 2: if(newval=0) newval=12; DisplayMonth(newval); break; case 3: if(newval=0) newval=31; DisplayDay(newval); case 4: if(newval0) newval=23; DisplayHour(newval); break; case 5: if(newval0) newval=59; DisplayMinute(newval); break; case 6: if(newval0) newval=59; DisplaySecond(newval); break; default:break; WriteSet1302(newaddr-1),(newval/10)0;i-) DQ = 0; /给脉冲信号 dat=1; DQ = 1; /给脉冲信号 if(DQ) dat|=0x80; delay_18B20(10); return(dat);void ds1820wr(uchar wdata)/*写数据*/unsigned char i=0; for (i=8; i0; i-) DQ = 0; DQ = wdata&0x01; delay_18B20(10); DQ = 1; wdata=1; read_temp()/*读取温度值并转换*/ uchar a,b; ds1820rst(); ds1820wr(0xcc);/*跳过读序列号*/ ds1820wr(0x44);/*启动温度转换*/ ds1820rst(); ds1820wr(0xcc);/*跳过读序列号*/ ds1820wr(0xbe);/*读取温度*/ a=ds1820rd(); b=ds1820rd(); tvalue=b; tvalue=8; tvalue=tvalue|a; if(tvalue0x0fff) tflag=0; else tvalue=tvalue+1; tflag=1; tvalue=tvalue*(0.425);/温度值扩大10倍，精确到1位小数return(tvalue); void ds1820disp()/温度值显示 uchar flagdat; disdata0=tvalue/1000+0x30;/百位数 disdata1=tvalue%1000/100+0x30;/十位数 disdata2=tvalue%100/10+0x30;/个位数 disdata3=tvalue%10+0x30;/小数位 if(tflag=0) flagdat=0x20;/正温度不显示符号 else flagdat=0x2d;/负温度显示负号:- if(disdata0=0x30) disdata0=0x20;/如果百位为0，不显示 if(disdata1=0x30) disdata1=0x20;/如果百位为0，十位为0也不显示 write_1602com(0xc9); write_1602dat(flagdat);/显示符号位 write_1602com(0xca); write_1602dat(disdata0);/显示百位 write_1602com(0xcb); write_1602dat(disdata1);/显示十位 write_1602com(0xcc); write_1602dat(disdata2);/显示个位 write_1602com(0xcd); write_1602dat(0x2e);/显示小数点 write_1602com(0xce); write_1602dat(disdata3);/显示小数位 write_1602com(0xcf); write_1602dat(C); /ds18b20.h#ifndef _DS18B20_H_#define _DS18B20_H_#include delay.hsbit DQ=P22;void delay_18B20(unsigned int i);void ds1820rst();uchar ds1820rd();void ds1820wr(uchar wdata);read_temp();void ds1820disp();#endif/ ds1302.c#include ds1302.h/*DS1302有关子函数*/void Write1302(uchar dat) uchar i; SCLK=0; /拉低SCLK，为脉冲上升沿写入数据做好准备 delay(2); /稍微等待，使硬件做好准备 for(i=0;i=1; /将dat的各数据位右移1位，准备写入下一个数据位 void WriteSet1302(uchar Cmd,uchar dat) RST=0; /禁止数据传递 SCLK=0; /确保写数居前SCLK被拉低 RST=1; /启动数据传输 delay(2); /稍微等待，使硬件做好准备 Write1302(Cmd); /写入命令字 Write1302(dat); /写数据 SCLK=1; /将时钟电平置于已知状态 RST=0; /禁止数据传递 uchar Read1302(void) uchar i,dat; delay(2); /稍微等待，使硬件做好准备 for(i=0;i=1; /将dat的各数据位右移1位，因为先读出的是字节的最低位 if(DATA=1) /如果读出的数据是1 dat|=0x80; /将1取出，写在dat的最高位 SCLK=1; /将SCLK置于高电平，为下降沿读出 delay(2); /稍微等待 SCLK=0; /拉低SCLK，形成脉冲下降沿 delay(2); /稍微等待 return dat; /将读出的数据返回 uchar ReadSet1302(uchar Cmd) uchar dat; RST=0; /拉低RST SCLK=0; /确保写数居前SCLK被拉低 RST=1; /启动数据传输 Write1302(Cmd); /写入命令字 dat=Read1302(); /读出数据 SCLK=1; /将时钟电平置于已知状态 RST=0; /禁止数据传递 return dat; /将读出的数据返回void Init_DS1302(void) WriteSet1302(0x8E,0x00); /根据写状态寄存器命令字，写入不保护指令 WriteSet1302(0x80,(0/10)4|(0%10); /根据写秒寄存器命令字，写入秒的初始值 WriteSet1302(0x82,(45/10)4|(45%10); /根据写分寄存器命令字，写入分的初始值 WriteSet1302(0x84,(15/10)4|(15%10); /根据写小时寄存器命令字，写入小时的初始值 WriteSet1302(0x86,(29/10)4|(29%10); /根据写日寄存器命令字，写入日的初始值 WriteSet1302(0x88,(11/10)4|(11%10); /根据写月寄存器命令字，写入月的初始值 WriteSet1302(0x8c,(10/10)4|(10%10); /nian WriteSet1302(0x8a,(4/10)4|(4%10);/ ds1302.h#ifndef _DS1302_H_#define _DS1302_H_#include delay.hsbit ACC0=ACC0;sbit ACC7=ACC7; /时钟数据接口sbit SCLK=P20;sbit DATA=P21; sbit RST=P22; void Write1302(uchar dat);void WriteSet1302(uchar Cmd,uchar dat);uchar Read1302(void);uchar ReadSet1302(uchar Cmd);void Init_DS1302(void);#endif/lcd1602.c#include lcd1602.huchar codetable= 2012-08-15 MON;uchar code table1= 12:00:00 000.0C;/*液晶写入指令函数与写入数据函数，以后可调用*/*在这个程序中，液晶写入有关函数会在DS1302的函数中调用，所以液晶程序要放在前面*/void write_1602com(uchar com)/*液晶写入指令函数*rs=0;/数据/指令选择置为指令rw=0; /读