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/*
* DhtSensor.h
*
* Created on: 15 Sep 2017
* Author: Christian
*/
#ifndef SRC_HEATING_SENSORS_DHTSENSOR_H_
#define SRC_HEATING_SENSORS_DHTSENSOR_H_
#include "RepRapFirmware.h"
#if SUPPORT_DHT_SENSOR
# include "AdditionalOutputSensor.h"
# include "SensorWithPort.h"
# include "RTOSIface/RTOSIface.h"
enum class DhtSensorType
{
Dht11,
Dht21,
Dht22
};
// This class represents a DHT temperature sensor
class DhtTemperatureSensor : public SensorWithPort
{
public:
DhtTemperatureSensor(unsigned int sensorNum, DhtSensorType type) noexcept;
~DhtTemperatureSensor() noexcept;
GCodeResult Configure(GCodeBuffer& gb, const StringRef& reply) override;
TemperatureError GetLatestTemperature(float& t, uint8_t outputNumber = 0) noexcept override;
const uint8_t GetNumAdditionalOutputs() const noexcept override { return 1; }
void Poll() noexcept override;
bool PollInTask() noexcept override;
void Interrupt() noexcept;
void TakeReading() noexcept;
TemperatureError ProcessReadings(float& t, float& h) noexcept;
static constexpr const char *TypeNameDht11 = "dht11";
static constexpr const char *TypeNameDht21 = "dht21";
static constexpr const char *TypeNameDht22 = "dht22";
private:
DhtSensorType type;
float lastHumidity;
uint8_t badTemperatureCount;
uint32_t lastReadTime;
volatile uint16_t lastPulseTime;
volatile uint8_t numPulses;
uint16_t pulses[41]; // 1 start bit + 40 data bits
};
// This class represents a DHT humidity sensor
class DhtHumiditySensor : public AdditionalOutputSensor
{
public:
DhtHumiditySensor(unsigned int sensorNum) noexcept;
~DhtHumiditySensor() noexcept;
static constexpr const char *TypeName = "dhthumidity";
};
#endif
#endif /* SRC_HEATING_SENSORS_DHTSENSOR_H_ */
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