85 lines
4.3 KiB
C
85 lines
4.3 KiB
C
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//******************************************************************************************
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// File: PS_AdafruitBMP280_TempPress.h
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// Authors: Dan G Ogorchock & Daniel J Ogorchock (Father and Son)
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//
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// Summary: PS_AdafruitBMP280_TempPress is a class which implements the "Temperature Measurement"
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// and "PressureMewasurement" device capabilities.
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// It inherits from the st::PollingSensor class. The current version uses I2C to measure the
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// temperature and pressure from a BMP280 series sensor using the Adafruit_BMP280 library.
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//
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// Create an instance of this class in your sketch's global variable section
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// For Example: st::PS_AdafruitBMP280_TempPress sensor2("BMP280_1", 60, 0, "temperature1", "pressure1", false, 100, 0x77);
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//
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// st::PS_AdafruitBMP280_TempPress() constructor requires the following arguments
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// - String &name - REQUIRED - the name of the object - must be unique, but is not used for data transfer for this device
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// - long interval - REQUIRED - the polling interval in seconds
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// - long offset - REQUIRED - the polling interval offset in seconds - used to prevent all polling sensors from executing at the same time
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// - String strTemp - REQUIRED - name of temperature sensor to send to ST Cloud (e.g."temperature1")
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// - String strPressure - REQUIRED - name of pressure sensor to send to ST Cloud (e.g. "pressure1")
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// - bool In_C - OPTIONAL - true = Report Celsius, false = Report Farenheit (Farentheit is the default)
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// - byte filterConstant - OPTIONAL - Value from 5% to 100% to determine how much filtering/averaging is performed 100 = none (default), 5 = maximum
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// - int address - OPTIONAL - I2C address of the sensor (defaults to 0x77 for the BMP280)
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//
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// Filtering/Averaging
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//
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// Filtering the value sent to ST is performed per the following equation
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//
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// filteredValue = (filterConstant/100 * currentValue) + ((1 - filterConstant/100) * filteredValue)
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//
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// This class supports receiving configuration data from the SmartThings cloud via the ST App. A user preference
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// can be configured in your phone's ST App, and then the "Configure" tile will send the data for all sensors to
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// the ST Shield. For PollingSensors, this data is handled in the beSMart() function.
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//
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// TODO: Determine a method to persist the ST Cloud's Polling Interval data
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//
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// Change History:
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//
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// Date Who What
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// ---- --- ----
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// 2018-07-01 Dan & Daniel Original Creation
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//
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//******************************************************************************************
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#ifndef ST_PS_AdafruitBMP280_TempPress_H
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#define ST_PS_AdafruitBMP280_TempPress_H
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#include "PollingSensor.h"
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#include <Adafruit_BMP280.h>
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namespace st
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{
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class PS_AdafruitBMP280_TempPress: public PollingSensor
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{
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private:
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int m_nAddress; //I2C Address of the sensor
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float m_fTemperatureSensorValue;//current Temperature value
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float m_fPressureSensorValue; //current Pressure Value
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Adafruit_BMP280 bmp; //I2C BMP280 library object
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String m_strTemperature; //name of temparature sensor to use when transferring data to ST Cloud / Hubitat
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String m_strPressure; //name of pressure sensor to use when transferring data to ST Cloud / Hubitat
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bool m_In_C; //Return temp in C (true or false)
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float m_fFilterConstant; //Filter constant % as floating point from 0.00 to 1.00
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public:
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//constructor - called in your sketch's global variable declaration section
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PS_AdafruitBMP280_TempPress(const __FlashStringHelper *name, unsigned int interval, int offset, String strTemp = "temperature1", String strPressure = "pressure1", bool In_C = false, byte filterConstant = 100, int address = 0x77);
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//destructor
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virtual ~PS_AdafruitBMP280_TempPress();
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//SmartThings Shield data handler (receives configuration data from ST - polling interval, and adjusts on the fly)
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virtual void beSmart(const String &str);
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//initialization routine
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virtual void init();
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//function to get data from sensor and queue results for transfer to ST Cloud
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virtual void getData();
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//gets
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inline float getTemperatureSensorValue() const { return m_fTemperatureSensorValue; }
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inline float getPressureSensorValue() const { return m_fPressureSensorValue; }
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};
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}
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#endif
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