DHT.h

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#ifndef DHT_H
#define DHT_H

#include "Arduino.h"

/* Uncomment to enable printing out nice debug messages. */
//#define DHT_DEBUG


#define DEBUG_PRINTER Serial 
/* Setup debug printing macros. */
#ifdef DHT_DEBUG
  #define DEBUG_PRINT(...) { DEBUG_PRINTER.print(__VA_ARGS__); }
  #define DEBUG_PRINTLN(...) { DEBUG_PRINTER.println(__VA_ARGS__); }
#else
  #define DEBUG_PRINT(...) {} 
  #define DEBUG_PRINTLN(...) {} 
#endif

/* Define types of sensors. */
#define DHT11 11 
#define DHT12 12 
#define DHT22 22 
#define DHT21 21 
#define AM2301 21 
class DHT {
  public:
   DHT(uint8_t pin, uint8_t type, uint8_t count=6);
   void begin(uint8_t usec=55);
   float readTemperature(bool S=false, bool force=false);
   float convertCtoF(float);
   float convertFtoC(float);
   float computeHeatIndex(bool isFahrenheit=true);
   float computeHeatIndex(float temperature, float percentHumidity, bool isFahrenheit=true);
   float readHumidity(bool force=false);
   bool read(bool force=false);

 private:
  uint8_t data[5];
  uint8_t _pin, _type;
  #ifdef __AVR
    // Use direct GPIO access on an 8-bit AVR so keep track of the port and bitmask
    // for the digital pin connected to the DHT.  Other platforms will use digitalRead.
    uint8_t _bit, _port;
  #endif
  uint32_t _lastreadtime, _maxcycles;
  bool _lastresult;
  uint8_t pullTime; // Time (in usec) to pull up data line before reading

  uint32_t expectPulse(bool level);

};

class InterruptLock {
  public:
   InterruptLock() {
#if !defined(ARDUINO_ARCH_NRF52)  
    noInterrupts();
#endif
   }
   ~InterruptLock() {
#if !defined(ARDUINO_ARCH_NRF52)  
    interrupts();
#endif
   }
};

#endif