ds18b20温度采集.c

51单片机驱动18B20+1602液晶显示!

#include<reg51.h>

#define uchar unsigned char
#define uint unsigned int

//sbit DQ=P3^7;与单片机连接口
sbit RS=P3^0;
sbit RW=P3^1;
sbit EN=P3^2;

unsigned char code str1[]={"Temperature: "};
unsigned char code str2[]={"       Han biao"};
/*************************lcd1602程序**************************/
void delay1ms(unsigned int ms)//延时1毫秒（不够精确的）
{unsigned int i,j;
   for(i=0;i<ms;i++)
    for(j=0;j<100;j++);
}

void wr_com(unsigned char com)//写指令//
{ delay1ms(1);
   RS=0;
   RW=0;
   EN=0;
   P2=com;
   delay1ms(1);
   EN=1;
   delay1ms(1);
   EN=0;
}

void wr_dat(unsigned char dat)//写数据//
{ delay1ms(1);;
   RS=1;
   RW=0;
   EN=0;
   P2=dat;
   delay1ms(1);
   EN=1;
   delay1ms(1);
   EN=0;
}

void lcd_init()//初始化设置//
{delay1ms(15);
wr_com(0x38);delay1ms(5);
   wr_com(0x08);delay1ms(5);
    wr_com(0x01);delay1ms(5);
     wr_com(0x06);delay1ms(5);
      wr_com(0x0c);delay1ms(5);
}


void display(unsigned char *p)//显示//
{
while(*p!='\0')
{
wr_dat(*p);
p++;
delay1ms(1);
}
}

init_play()//初始化显示
{ lcd_init();
    wr_com(0x80);
display(str1);
wr_com(0xc0);
display(str2);
   }
/********************主程序***********************************/
void main()
{ init_play();//初始化显示
   while(1)
      ;

       }