TinyDHT.h

Go to the documentation of this file.

#ifndef DHT_H
#define DHT_H
#if ARDUINO >= 100
#include "Arduino.h"
#else
#include "WProgram.h"
#endif

/* Tiny DHT library
Uses integer math to save space on Trinket/Gemma

MIT license
written by Adafruit Industries
*/

#define MAXTIMINGS                                                             \
  85 

#define DHT11 11  
#define DHT22 22  
#define DHT21 21  
#define AM2301 21 

// NAN code in DHT library takes space, define bad values here
#define BAD_HUM -1    
#define BAD_TEMP -999 


class DHT {
private:
  uint8_t data[6];
  uint8_t _pin, _type, _count;
  boolean read(void);
  unsigned long _lastreadtime;
  boolean firstreading;

public:
  DHT(uint8_t pin, uint8_t type, uint8_t count = 6);
  void begin(void);
  int16_t readTemperature(bool S = false);
  int16_t convertCtoF(int16_t);
  uint8_t readHumidity(void);
};
#endif