mirror of
https://github.com/adafruit/DHT-sensor-library.git
synced 2023-10-23 22:20:38 +03:00
61 lines
1.2 KiB
C++
61 lines
1.2 KiB
C++
/* DHT library
|
|
|
|
MIT license
|
|
written by Adafruit Industries
|
|
*/
|
|
#ifndef DHT_H
|
|
#define DHT_H
|
|
|
|
#if ARDUINO >= 100
|
|
#include "Arduino.h"
|
|
#else
|
|
#include "WProgram.h"
|
|
#endif
|
|
|
|
|
|
// Uncomment to enable printing out nice debug messages.
|
|
//#define DHT_DEBUG
|
|
|
|
// Define where debug output will be printed.
|
|
#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 DHT22 22
|
|
#define DHT21 21
|
|
#define AM2301 21
|
|
|
|
|
|
class DHT {
|
|
public:
|
|
DHT(uint8_t pin, uint8_t type, uint8_t count=6);
|
|
void begin(void);
|
|
float readTemperature(bool S=false);
|
|
float convertCtoF(float);
|
|
float convertFtoC(float);
|
|
float computeHeatIndex(float temperature, float percentHumidity, bool isFahrenheit=true);
|
|
float readHumidity(void);
|
|
boolean read(void);
|
|
|
|
private:
|
|
uint8_t data[6];
|
|
uint8_t _pin, _type;
|
|
uint32_t _lastreadtime;
|
|
bool _firstreading;
|
|
bool _lastresult;
|
|
|
|
uint32_t expectPulse(bool level);
|
|
|
|
};
|
|
|
|
#endif
|