GY-63_MS5611/libraries/DHTstable/DHTStable.h
2023-10-25 19:52:37 +02:00

73 lines
2.1 KiB
C++

#pragma once
//
// FILE: DHTStable.h
// AUTHOR: Rob Tillaart
// VERSION: 1.1.2
// PURPOSE: DHT Temperature & Humidity Sensor library for Arduino
// URL: https://github.com/RobTillaart/DHTstable
#include "Arduino.h"
#define DHTSTABLE_LIB_VERSION (F("1.1.2 - DHTStable"))
const int DHTLIB_OK = 0;
const int DHTLIB_ERROR_CHECKSUM = -1;
const int DHTLIB_ERROR_TIMEOUT = -2;
const int DHTLIB_INVALID_VALUE = -999;
const int DHTLIB_DHT11_WAKEUP = 18;
const int DHTLIB_DHT_WAKEUP = 1;
// max timeout is 100usec.
// For a 16Mhz processor that is max 1600 clock cycles
// loops using TIMEOUT use at least 4 clock cycles
// so 100 us takes max 400 loops
// so by dividing F_CPU by 40000 we "fail" as fast as possible
const int DHTLIB_TIMEOUT = (F_CPU/40000);
class DHTStable
{
public:
DHTStable();
void reset();
// return values:
// DHTLIB_OK
// DHTLIB_ERROR_CHECKSUM
// DHTLIB_ERROR_TIMEOUT
int read11(uint8_t pin); // DHT11 & DHT12
int read(uint8_t pin); // DHT22
inline int read12(uint8_t pin) { return read11(pin); }; // ok
inline int read21(uint8_t pin) { return read(pin); }; // ok
inline int read22(uint8_t pin) { return read(pin); }; // ok
inline int read33(uint8_t pin) { return read(pin); }; // ok
inline int read44(uint8_t pin) { return read(pin); }; // ok
inline int read2301(uint8_t pin) { return read(pin); }; // ok
inline int read2302(uint8_t pin) { return read(pin); }; // ok
inline int read2320(uint8_t pin) { return read(pin); }; // ok
inline int read2322(uint8_t pin) { return read(pin); }; // ok
// read values from cache, call read() to refresh!
float getHumidity() { return _humidity; };
float getTemperature() { return _temperature; };
bool getDisableIRQ() { return _disableIRQ; };
void setDisableIRQ(bool b ) { _disableIRQ = b; };
private:
uint8_t _bits[5]; // buffer to receive data
int _readSensor(uint8_t pin, uint8_t wakeupDelay);
bool _disableIRQ = false;
float _humidity;
float _temperature;
};
// -- END OF FILE --