DHT-sensor-library/DHT.h
Paint Your Dragon be8859e28c
Merge pull request #113 from gpambrozio/master
Making the library work nicely with the nrf52
2019-01-11 16:34:03 -08:00

82 lines
1.7 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 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(void);
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;
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