实验报告温度计(SPI通信及单总线通信)

1、梧州学院实验报告专业班级:11电本3班 学号：1101902310 姓名：黄斯文实验组号： 同组成员：黎善飞实验室名称： 实验时间： 指导老师：郭慧实验设备及环境：PC机1台实验目的：掌握SPI通信及单总线通信的原理。实验原理及内容：1. DS18B20与单片机采用单总线通信，DS1302与单片机采用SPI通信，在液晶显示器上实时显示当前的温度以及日历与时间。2. 实验电路图如下：实验步骤及数据记录：3. 实验程序如下：main程序如下：#include "ds18b20.h"#include "12864.h"#include "1302.h

2、"#include "key.h"#include "zifu.h"bit flagg=0;uchar ip;main() uchar i; systemtime realtime; choose12864(2); init12864(); clear12864(); play8(0,0,0,shu2); /屏，列，页，地址 play8(0,1,0,shu0); play16(0,4,0,nian); play16(1,0,0,yue); play16(1,4,0,ri); play16(0,2,1,shi); play16(0,6,1,fen

3、); play16(1,2,1,miao); play16(1,0,2,xing); play16(1,2,2,qi); vertical(3,63,63); vertical(3,63,62); vertical(3,63,58); vertical(3,63,57); for(i=0;i<7;i+) dot(57+i,3);dot(57+i,63); for(i=0;i<12;i+) dot(59,8+5*i); for(i=0;i<7;i+) if(i<4) play16(0,i*2,3,ming+i*32);if(i>=4) play16(1,(i-4)*

4、2,3,ming+i*32); init_ds1302(); init_time(); do gettime(&realtime); play8(0,2,0,(shu0+16*datastring0); play8(0,3,0,(shu0+16*datastring1); play8(0,6,0,(shu0+16*datastring2); play8(0,7,0,(shu0+16*datastring3); play8(1,2,0,(shu0+16*datastring4); play8(1,3,0,(shu0+16*datastring5); play8(0,0,1,(shu0+1

5、6*datastring6); play8(0,1,1,(shu0+16*datastring7); play8(0,4,1,(shu0+16*datastring8); play8(0,5,1,(shu0+16*datastring9); play8(1,0,1,(shu0+16*datastring10); play8(1,1,1,(shu0+16*datastring11); play16(1,4,2,(yi+32*(datastring12-1); gettemperature(); if(flag) play8(0,0,2,fu); play8(1,6,3,fu); else cle

6、ar8(6,4,0);play8(1,6,3,zheng); play8(0,4+flag,2,dian); play8(0,5+flag,2,C); play8(0,0+flag,2,(shu0+16*temp0); play8(0,1+flag,2,(shu0+16*temp1); play8(0,2+flag,2,xiao); play8(0,3+flag,2,(shu0+16*temp2); change(); keyscan(); switch(sum) case 0:ip=ds1302_year;flagg=1;break; case 1:ip=ds1302_month;flagg

7、=1;break; case 2:ip=ds1302_week;flagg=1;break; case 3:ip=ds1302_day;flagg=1;break; case 4:ip=ds1302_hour;flagg=1;break; case 5:ip=ds1302_minute;flagg=1;break; case 6:ip=ds1302_second;flag=1;break; default:break; if(flagg=1) keyscan(); if(sum=7) set(ip,1); sum=0xff; else if(sum=8) set(ip,0); sum=0xff

8、; while(1);12864程序如下：#ifndef _12864_H_#define _12864_H_sbit E=P12; /使能端sbit RW=P11; /读写端 sbit RS=P10; /数据命令端口sbit CS1=P13;sbit CS2=P14;/*检查液晶是否忙碌*/void chekbusy12864(void) uchar dat; /状态信息，判断是否忙 RS=0; /指令模式 RW=1; /读数据 do P0=0x00; E=1; dat=P0&0x80; / 仅当第七位为0时才可操作（判别busy信号） E=0; /信号下降沿锁存DB7DB0; wh

9、ile(dat!=0x00); /*选屏*/void choose12864(uchar i)/i是要写的屏.0是左屏,1是右屏,2是双屏 switch (i) case 0: CS1=0;CS2=1;break; case 1: CS1=1;CS2=0;break;case 2: CS1=0;CS2=0;break;default: break; /*写命令*/void cmd_w12864(uchar cmd)/写命令 chekbusy12864(); RS=0; /指令模式 RW=0; /写模式 E=1; P0=cmd; E=0;/en下降沿/*写数据*/void dat_w12864(

10、uchar dat) chekbusy12864(); RS=1; /写数据 RW=0; /R/W='L',E='H->L',数据被写到IR或DR E=1; P0=dat; /dat:显示数据 E=0;/en下降沿/*清屏*/void clear12864(void) uchar page,row; for(page=0xb8;page<0xc0;page+) /控制页数 cmd_w12864(page);cmd_w12864(0x40);for(row=0;row<64;row+) /控制列数 dat_w12864(0x00); /写点内容，

11、列地址自动加1 /*初始化*/void init12864(void) chekbusy12864(); cmd_w12864(0xc0); cmd_w12864(0x3f);/*8X16字符的显示*/void play8(uchar ch,uchar row,uchar page,uchar *adr) uchar i; choose12864(ch); /选屏参数，0,1,2 page=page<<1; row=row*8; cmd_w12864(row+0x40); cmd_w12864(page+0xb8); /写上半页 for(i=0;i<8;i+) dat_w12

12、864(*(adr+i); cmd_w12864(row+0x40); cmd_w12864(page+0xb9); /写下半页 for(i=8;i<16;i+) dat_w12864(*(adr+i); /*16X16显示*/play16(uchar ch,uchar row,uchar page,uchar *adr) uchar i; choose12864(ch); page=page<<1; row=row*8; cmd_w12864(row+0x40); cmd_w12864(page+0xb8); for(i=0;i<16;i+) dat_w12864(*

13、(adr+i); cmd_w12864(row+0x40); cmd_w12864(page+0xb9); for(i=16;i<32;i+) dat_w12864(*(adr+i); /*读数据*/uchar dat_r12864(uchar page,uchar arrange) /page页地址.arrange列地址) uchar dat; chekbusy12864(); cmd_w12864(page+0xb8); cmd_w12864(arrange+0x40); P0=0xff; RW=1; RS=1; E=1; E=0; E=1; dat=P0; E=0; return(

14、dat);clear8(uchar x,uchar y,uchar ch) uchar i; choose12864(ch); cmd_w12864(x*8+0x40); cmd_w12864(y+0xb8); for(i=0;i<8;i+) dat_w12864(0x00); cmd_w12864(x*8+0x40); cmd_w12864(y+0xb9); for(i=0;i<16;i+) dat_w12864(0x00); /*竖线*/void vertical(uchar y1,uchar y2,uchar x)/y0表示起点,y1表示终点 uchar i,sum=0; c

15、hoose12864(1); if(y1/8)!=(y2/8) for(i=0;i<(8-y1%8);i+) sum=sum|(2<<(y1%8)+i); cmd_w12864(x+0x40); cmd_w12864(y1/8+0xb8); dat_w12864(sum); sum=0; for(i=0;i<(y2/8-y1/8-1);i+) cmd_w12864(x+0x40); cmd_w12864(y1/8)+0xb9+i); dat_w12864(0xff); for(i=0;i<=(y2%8);i+) sum=sum|(2<<i); cmd_

16、w12864(x+0x40); cmd_w12864(y2/8+0xb8); dat_w12864(sum|1); sum=0; else for(i=0;i<=y2-y1;i+) sum=sum|(2<<(i+(y1%8);cmd_w12864(0x40+x);cmd_w12864(0xb8+(y1/8);dat_w12864(sum); /*点的显示*/void dot(uchar x,uchar y)/所有的图形都在右屏上。 uchar dat; choose12864(1); dat=dat_r12864(y/8,x); cmd_w12864(0x40+x); cmd

17、_w12864(0xb8+y/8); dat_w12864(1<<(y%8)|dat);/*温度对图形的转换*/void change(void) static uchar n=63; uchar i,m,sum=0; m=temp0*10+temp1+(temp2+5)/10; if(m<60) m=62-m; if(m<n) vertical(m,63,60); if(m>n) if(m/8)>(n/8) cmd_w12864(n/8+0xb8); cmd_w12864(0x40+60); dat_w12864(0x00); for(i=0;i<(

18、8-m%8);i+) sum=sum+(2<<(m%8)+i); cmd_w12864(m/8+0xb8); cmd_w12864(0x40+60); dat_w12864(sum); n=m; dot(60,3); DS18B20程序如下： #ifndef _DS18B20_H_#define _DS18B20_H_#include <at89x51.h>#define uchar unsigned char#define uint unsigned intsbit DQ=P30;uchar temp3;uchar flag=0;void delayfor(uchar

19、 i) for(i;i>0;i-);void delay11us(uint k) while(k-);void delay1ms(uint k) k=k*125; while(k-);/*ds18b20*/void ds18b20_init(void) DQ=1; delayfor(8); DQ=0; delayfor(70); /80改60 DQ=1; delayfor(25); /*ds18b20读一个字节*/uchar ds18b20_readchar(void) uchar i=0;uchar dat = 0;for(i=8;i>0;i-) DQ = 0; / 给脉冲信号

20、dat>>=1; DQ = 1; / 给脉冲信号 if(DQ) dat|=0x80; delay11us(10); return(dat);/*ds18b20写一个字节*/ds18b20_writechar(uchar dat) uchar i=0; for (i=8; i>0; i-) DQ = 0; DQ = dat&0x01; delay11us(10); DQ = 1; dat>>=1; /*读出温度*/uint readtemperature(void)uchar a=0;uchar b=0;uint t=0;ds18b20_init();ds1

21、8b20_writechar(0xCC); / 跳过读序号列号的操作ds18b20_writechar(0x44); / 启动温度转换delay11us(100);ds18b20_init();ds18b20_writechar(0xCC); /跳过读序号列号的操作ds18b20_writechar(0xBE); /读取温度寄存器等（共可读9个寄存器） 前两个就是温度a=ds18b20_readchar();b=ds18b20_readchar();if(b*256+a)>63488) t=(b*256+a)+1; t=t*25;flag=1;/取反加1 else t = (b*256+

22、a)*25;flag=0; return(t>>2); /*温度数值处理*/ void gettemperature(void) static uint te=0xffff; uint realtemp;realtemp=readtemperature();if(te!=realtemp)temp0=realtemp/1000;temp1=(realtemp/100)%10;temp2=(realtemp/10)%10;te=realtemp; 1302程序如下：#ifndef _DS1302_H_ /防止重载#define _DS1302_H_#define ds1302_sec

23、ond 0x80#define ds1302_minute 0x82#define ds1302_hour 0x84#define ds1302_day 0x86#define ds1302_week 0x8a#define ds1302_month 0x88#define ds1302_year 0x8c/*端口定义*/sbit IO=P16;sbit CLK=P17;sbit RST=P15;sbit ACC0=ACC0;sbit ACC7=ACC7;uchar datastring13; /存放时间的数组typedef struct uchar second;uchar minute;u

24、char hour;uchar day;uchar week;uchar month;uchar year;systemtime;/定义的时间的类型void ds1302_write(uchar dat) /写一个字节 uchar i,j; j=dat; for(i=0;i<8;i+)/发送字节，循环8次 IO=j&0x01; CLK=1; CLK=0; j>>=1; /*实时时钟读出一个字节*/uchar ds1302_read() uchar i; for(i=0;i<8;i+)/先传低位 ACC=ACC>>1; ACC7=IO; CLK=1;

25、CLK=0; return(ACC);/*写入数据*/void dat_write(uchar addr,uchar dat) /addr为要写数据的地址,dat为要写的数据 RST=0; CLK=0; RST=1;/启动 ds1302_write(addr); ds1302_write(dat); CLK=1; RST=0; /恢复/*读出数据*/uchar dat_read(uchar addr) uchar dat; RST=0; CLK=0; RST=1; ds1302_write(addr|0x01); /使读操作为奇地址 dat=ds1302_read(); CLK=1; RST=

26、0; return(dat);/*是否写保护*/void ds1302_protect(bit flag) if(flag) dat_write(0x8e,0x10); /禁止写 else dat_write(0x8e,0x00); /允许写/*时间设置*/void settime(uchar addr,uchar value) ds1302_protect(0); /允许写 dat_write(addr,value); ds1302_protect(1);/禁止写/*时间增减设置*/void set(uchar adr,bit flag) uchar dat; dat=dat_read(ad

27、r); if(flag) dat_write(adr,dat+1); else dat_write(adr,dat-1);/*12/24小时时间设置*/void day_set(bit flag) /flag为1为12时制,为0则为24小时制 uchar hour; hour=(dat_read(0x85)&0x7f); /保留小时寄存器中原有的时间值 ds1302_protect(0); if(flag) dat_write(0x84,0x80|hour); else dat_write(0x84,0x00|hour); ds1302_protect(1); /*取时间*/void

28、gettime(systemtime *time) uchar readvalue; readvalue=dat_read(ds1302_second); time->second=(readvalue&0x70)>>4)*10+(readvalue&0x0f); readvalue=dat_read(ds1302_minute); time->minute=(readvalue&0x70)>>4)*10+(readvalue&0x0f); readvalue=dat_read(ds1302_hour); time->h

29、our=(readvalue&0x30)>>4)*10+(readvalue&0x0f); readvalue=dat_read(ds1302_day); time->day=(readvalue&0x30)>>4)*10+(readvalue&0x0f); readvalue=dat_read(ds1302_week); time->week=(readvalue&0x07); readvalue=dat_read(ds1302_month); time->month=(readvalue&0x01)&

30、gt;>4)*10+(readvalue&0x0f); readvalue=dat_read(ds1302_year); time->year=(readvalue&0xf0)>>4)*10+(readvalue&0x0f); datastring0=time->year/10; datastring1=time->year%10; datastring2=time->month/10; datastring3=time->month%10; datastring4=time->day/10; datastring5

31、=time->day%10; datastring6=time->hour/10; datastring7=time->hour%10; datastring8=time->minute/10; datastring9=time->minute%10; datastring10=time->second/10; datastring11=time->second%10; datastring12=time->week; /*初始时间设置为2008-08-08 08时08分08秒*/void init_time(void) day_set(0);

32、settime(ds1302_second,0x08); settime(ds1302_minute,0x08); settime(ds1302_hour,0x08); settime(ds1302_day,0x08); settime(ds1302_month,0x08); settime(ds1302_year,0x08); settime(ds1302_week,0x05); /*DS1302初始化*/void init_ds1302(void) uchar second=dat_read(ds1302_second); if(second&0x80) settime(ds130

33、2_second,0);KEY程序如下：#ifndef _KEY_H_#define _KDY_H_#define dataport P2uchar sum;uchar scan(uchar k) uchar re; switch (k) case 1:re=0;break;case 2:re=1;break;case 4:re=2;break;default:break; return re;void keyscan(void) uchar m,n; dataport=0x07; delay11us(1); if(dataport!=0x07) dataport=0x07;delay1ms(

34、5);m=dataport&0x07;if(m!=0x07) m=m0x07; m=scan(m); dataport=0x70; delay11us(1); n=dataport&0x70; if(n!=0x70) n=n>>4;n=n0x07;n=scan(n);sum=3*m+n; dataport=0x07;while(dataport!=0x07); ZIFU程序如下：uchar code shu0=0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x0F,0x10,0x20,0x20,0x10,0x0F,0x00

35、;/*"0",0*/uchar code shu1=0x00,0x10,0x10,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00;/*"1",0*/uchar code shu2=0x00,0x70,0x08,0x08,0x08,0x88,0x70,0x00,0x00,0x30,0x28,0x24,0x22,0x21,0x30,0x00;/*"2",0*/uchar code shu3=0x00,0x30,0x08,0x88,0x88,0x48,0x30

36、,0x00,0x00,0x18,0x20,0x20,0x20,0x11,0x0E,0x00;/*"3",0*/uchar code shu4= 0x00,0x00,0xC0,0x20,0x10,0xF8,0x00,0x00,0x00,0x07,0x04,0x24,0x24,0x3F,0x24,0x00;/*"4",0*/uchar code shu5=0x00,0xF8,0x08,0x88,0x88,0x08,0x08,0x00,0x00,0x19,0x21,0x20,0x20,0x11,0x0E,0x00;/*"5",0*/ucha

37、r code shu6=0x00,0xE0,0x10,0x88,0x88,0x18,0x00,0x00,0x00,0x0F,0x11,0x20,0x20,0x11,0x0E,0x00;/*"6",0*/uchar code shu7=0x00,0x38,0x08,0x08,0xC8,0x38,0x08,0x00,0x00,0x00,0x00,0x3F,0x00,0x00,0x00,0x00;/*"7",0*/uchar code shu8=0x00,0x70,0x88,0x08,0x08,0x88,0x70,0x00,0x00,0x1C,0x22,0x2

38、1,0x21,0x22,0x1C,0x00;/*"8",0*/uchar code shu9=0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x00,0x31,0x22,0x22,0x11,0x0F,0x00;/*"9",0*/uchar code dian=0x00,0x38,0x38,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00;/*"°",0*/uchar code C=0xC0,0x30,0

39、x08,0x08,0x08,0x08,0x38,0x00,0x07,0x18,0x20,0x20,0x20,0x10,0x08,0x00;/*"C",0*/uchar code xiao=0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00,0x00,0x00;/*".",0*/uchar code fu=0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x01,0x01,0x01,0x01;uch

40、ar code zheng=0x00,0x00,0x00,0xF0,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x1F,0x01,0x01,0x01,0x00;/*"+",0*/uchar code nian=0x40,0x20,0x10,0x0C,0xE3,0x22,0x22,0x22,0xFE,0x22,0x22,0x22,0x22,0x02,0x00,0x00,0x04,0x04,0x04,0x04,0x07,0x04,0x04,0x04,0xFF,0x04,0x04,0x04,0x04,0x04,0x04,0x00;/*"年&q

41、uot;,0*/uchar code yue=0x00,0x00,0x00,0x00,0x00,0xFF,0x11,0x11,0x11,0x11,0x11,0xFF,0x00,0x00,0x00,0x00,0x00,0x40,0x20,0x10,0x0C,0x03,0x01,0x01,0x01,0x21,0x41,0x3F,0x00,0x00,0x00,0x00;/*"月",0*/uchar code shi=0x00,0xFC,0x44,0x44,0x44,0xFC,0x10,0x90,0x10,0x10,0x10,0xFF,0x10,0x10,0x10,0x00,0x0

42、0,0x07,0x04,0x04,0x04,0x07,0x00,0x00,0x03,0x40,0x80,0x7F,0x00,0x00,0x00,0x00;/*"时",0*/uchar code fen=0x80,0x40,0x20,0x98,0x87,0x82,0x80,0x80,0x83,0x84,0x98,0x30,0x60,0xC0,0x40,0x00,0x00,0x80,0x40,0x20,0x10,0x0F,0x00,0x00,0x20,0x40,0x3F,0x00,0x00,0x00,0x00,0x00;/*"分",0*/uchar code

43、 miao=0x12,0x12,0xD2,0xFE,0x91,0x11,0xC0,0x38,0x10,0x00,0xFF,0x00,0x08,0x10,0x60,0x00,0x04,0x03,0x00,0xFF,0x00,0x83,0x80,0x40,0x40,0x20,0x23,0x10,0x08,0x04,0x03,0x00;/*"秒",0*/uchar code xing=0x00,0x00,0x00,0xBE,0x2A,0x2A,0x2A,0xEA,0x2A,0x2A,0x2A,0x2A,0x3E,0x00,0x00,0x00,0x00,0x48,0x46,0x41

44、,0x49,0x49,0x49,0x7F,0x49,0x49,0x49,0x49,0x49,0x41,0x40,0x00;/*"星",0*/uchar code qi=0x00,0x04,0xFF,0x54,0x54,0x54,0xFF,0x04,0x00,0xFE,0x22,0x22,0x22,0xFE,0x00,0x00,0x42,0x22,0x1B,0x02,0x02,0x0A,0x33,0x62,0x18,0x07,0x02,0x22,0x42,0x3F,0x00,0x00;/*"期",1*/uchar code yi=0x00,0x80,0x8

45、0,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0xC0,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00;/*"一",0*/uchar code er=0x00,0x00,0x04,0x04,0x04,0x04,0x04,0x04,0x04,0x04,0x04,0x06,0x04,0x00,0x00,0x00,0x00,0x10,0x10,0x10,0x10,0x10,0x10,0x10,

46、0x10,0x10,0x10,0x10,0x10,0x18,0x10,0x00;/*"二",1*/uchar code san=0x00,0x04,0x84,0x84,0x84,0x84,0x84,0x84,0x84,0x84,0x84,0x84,0x84,0x04,0x00,0x00,0x00,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x00;/*"三",2*/uchar code si=0x00,0xFE,0x02,0x02,0x02,0xFE,0x0

47、2,0x02,0xFE,0x02,0x02,0x02,0x02,0xFE,0x00,0x00,0x00,0x7F,0x28,0x24,0x23,0x20,0x20,0x20,0x21,0x22,0x22,0x22,0x22,0x7F,0x00,0x00;/*"四",3*/uchar code wu=0x00,0x02,0x82,0x82,0x82,0x82,0xFE,0x82,0x82,0x82,0xC2,0x82,0x02,0x00,0x00,0x00,0x20,0x20,0x20,0x20,0x20,0x3F,0x20,0x20,0x20,0x20,0x3F,0x20,

48、0x20,0x30,0x20,0x00;/*"五",4*/uchar code liu=0x10,0x10,0x10,0x10,0x10,0x91,0x12,0x1E,0x94,0x10,0x10,0x10,0x10,0x10,0x10,0x00,0x00,0x40,0x20,0x10,0x0C,0x03,0x01,0x00,0x00,0x01,0x02,0x0C,0x78,0x30,0x00,0x00;/*"六",5*/uchar code ri=0x00,0x00,0x00,0xFE,0x42,0x42,0x42,0x42,0x42,0x42,0x4

49、2,0xFE,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x3F,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x3F,0x00,0x00,0x00,0x00;/*"日",0*/uchar code xx=0x40,0x40,0xC0,0xC0,0xC0,0xE0,0xFC,0xFF,0xFC,0xE0,0xC0,0xC0,0xC0,0x40,0x40,0x00,0x00,0x00,0x40,0x39,0x3F,0x1F,0x1F,0x0F,0x1F,0x1F,0x3F,0x39,0x40,0x00,0x00,0x00;/*"",0*/uch