DTH11温度传感器模块
#include <reg51.h>
#include <intrins.h>
#include "dht11.h"
//typedef unsigned char U8; /* defined for unsigned 8-bits integer variable ???8????? */
typedef signed char S8; /* defined for signed 8-bits integer variable ???8????? */
typedef unsigned int U16; /* defined for unsigned 16-bits integer variable ???16????? */
typedef signed int S16; /* defined for signed 16-bits integer variable ???16????? */
typedef unsigned long U32; /* defined for unsigned 32-bits integer variable ???32????? */
typedef signed long S32; /* defined for signed 32-bits integer variable ???32????? */
typedef float F32; /* single precision floating point variable (32bits) ??????(32???) */
typedef double F64; /* double precision floating point variable (64bits) ??????(64???) */
#define uchar unsigned char
#define uint unsigned int
#define Data_0_time 4
sbit dht=P3^6;
U8 U8FLAG,k;
U8 U8count,U8temp;
//U8 U8T_data_H,U8T_data_L,U8RH_data_H,U8RH_data_L,U8checkdata;
U8 U8T_data_H_temp,U8T_data_L_temp,U8RH_data_H_temp,U8RH_data_L_temp,U8checkdata_temp;
U8 U8comdata;
U8 outdata[5]; //????????
U8 indata[5];
U8 count, count_r=0;
U8 str[5]={"RS232"};
U16 U16temp1,U16temp2;
void Delay(U16 j)
{
U8 i;
for(;j>0;j--)
{
for(i=0;i<27;i++);
}
}
void Delay_10us(void)
{
U8 i;
i--;
i--;
i--;
i--;
i--;
i--;
}
void COM(void)
{
U8 i;
for(i=0;i<8;i++)
{
U8FLAG=2;
while((!dht)&&U8FLAG++);
Delay_10us();
Delay_10us();
Delay_10us();
U8temp=0;
if(dht)U8temp=1;
U8FLAG=2;
while((dht)&&U8FLAG++);
if(U8FLAG==1)break;
U8comdata<<=1;
U8comdata|=U8temp; //0
}//rof
}
void RH(void)
{
dht=0;
Delay(180);
dht=1;
Delay_10us();
Delay_10us();
Delay_10us();
Delay_10us();
dht=1;
if(!dht) //T !
{
U8FLAG=2;
while((!dht)&&U8FLAG++);
U8FLAG=2;
while((dht)&&U8FLAG++);
COM();
U8RH_data_H_temp=U8comdata;
COM();
U8RH_data_L_temp=U8comdata;
COM();
U8T_data_H_temp=U8comdata;
COM();
U8T_data_L_temp=U8comdata;
COM();
U8checkdata_temp=U8comdata;
dht=1;
U8temp=(U8T_data_H_temp+U8T_data_L_temp+U8RH_data_H_temp+U8RH_data_L_temp);
if(U8temp==U8checkdata_temp)
{
U8RH_data_H=U8RH_data_H_temp;
U8RH_data_L=U8RH_data_L_temp;
U8T_data_H=U8T_data_H_temp;
U8T_data_L=U8T_data_L_temp;
U8checkdata=U8checkdata_temp;
}//fi
}//fi
}
//void main()
//{
// while(1)
// {
// RH();
// str[0]=U8RH_data_H;
// str[1]=U8RH_data_L;
// str[2]=U8T_data_H;
// str[3]=U8T_data_L;
// str[4]=U8checkdata;
// Delay(20000);
// }//elihw
//}// main
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