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DHT11.cpp
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DHT11.cpp
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#include <Energia.h>
#include "DHT11.h"
#define DHpin PB_5
char dat[5];
fclass::fclass(){
}
void fclass::dht_init(){
pinMode(DHpin,OUTPUT);
delay(1000);
}
char fclass::read_data(){ //Sensor detection
char data;
data=0x00;
for(int i=0; i<8; i++)
{
if(digitalRead(DHpin) == LOW)
{
while(digitalRead(DHpin) == LOW);
delayMicroseconds(30);
if(digitalRead(DHpin) == HIGH)
data |= (1<<(7-i));
while(digitalRead(DHpin) == HIGH);
}
}
return data;
}
void fclass::start_test(){
digitalWrite(DHpin,LOW);
delay(30);
digitalWrite(DHpin,HIGH);
delayMicroseconds(40);
pinMode(DHpin,INPUT);
while(digitalRead(DHpin) == HIGH);
delayMicroseconds(80); //
if(digitalRead(DHpin) == LOW);
delayMicroseconds(80);
for(int i=0;i<4;i++)
dat[i] = read_data();
pinMode(DHpin,OUTPUT);
digitalWrite(DHpin,HIGH);
}
char fclass::get_Temp(){ //Sensor detection
return dat[2];
}
char fclass::get_Hum(){ //Sensor detection
return dat[0];
}
fclass dht = fclass();