thermometer.txt

语音温度计 使用AT89C2051单片机

//使用AT89C2051单片机，12MHz晶体，用共阳LED数码管
//P1口输出段码，P3口扫描，P3.4接DS18B20
//#Pragma src(d:\aa.asm)
#include <reg51.h>
#include "intrins.h"                            //_nop_();延时函数用
#define  Disdata P1                             //段码输出口
#define  discan  P2                             //扫描口
#define  disdate1 P0 
#define  uchar unsigned char
#define  uint  unsigned int
sbit     DQ=P3^7;                               //温度输入口
sbit     DIN=P1^7;  //LED小数点控制
sbit     pw =P3^0;
uint     h; 
char n;
char z;

//
//
//**************温度小数部分用查表法***********//
uchar code ditab[16]=
{0x00,0x01,0x01,0x02,0x03,0x03,0x04,0x04,0x05,0x06,0x06,0x07,0x08,0x08,0x09,0x09};
//
uchar code dis_7[12]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff,0xbf};
//共阳LED段码表        "0"  "1"  "2"  "3"  "4"  "5"  "6"  "7"  "8"  "9" "不亮" "-"              
uchar code scan_con[4]={0xfe,0xfd,0xfb,0xf7};    //列扫描控制字
uchar data temp_data[2]={0x00,0x00};             //读出温度暂放
uchar data display[5]={0x00,0x00,0x00,0x00,0x00};     //显示单元数据，共4个数据和一个运算暂用
uchar code dis_8[18]={0x00,0x10,0x1c,0x22,0x26,0x2a,0x2e,0x32,0x36,0x3a,0x3e,0x42,0x46,0x4a,0x4e,0x52,0x5a,0xef};
                
                     //当前，摄氏度，零下，点，1， 2，  3，  4，   5， 6，  7，   8，  9，  十， 0， 报警，当前零下