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Gašper Dobrovoljc
2023-03-11 15:11:03 +01:00
commit ec125f27db
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187
lib/ST_Anything_Adafruit_Si7021_TempHumidity/PS_Adafruit_Si7021_TempHumidity.cpp Normal file
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//******************************************************************************************
// File: PS_Adafruit_BME280_TemperatureHumidityBarometric.cpp
// Authors: Dan G Ogorchock & Daniel J Ogorchock (Father and Son) & Josh Hill
//
// Summary: PS_Adafruit_Si7021_TempHumidity is a class which implements both the SmartThings "Temperature Measurement"
// and "Relative Humidity Measurement" device capabilities.
// It inherits from the st::PollingSensor class. The current version uses I2C to measure the
// temperature and humidity from an Si7021 sensor. This was tested with a generic Si7021 sensor from AliExpress.
//
// Create an instance of this class in your sketch's global variable section
// For Example: st::PS_Adafruit_Si7021_TempHumidity sensor2("temphumid1", 120, 7, "temperature1", "humidity1", false);
//
// st::PS_Adafruit_Si7021_TempHumidity() constructor requires the following arguments
// - String &name - REQUIRED - the name of the object - must match the Groovy ST_Anything DeviceType tile name
// - long interval - REQUIRED - the polling interval in seconds
// - long offset - REQUIRED - the polling interval offset in seconds - used to prevent all polling sensors from executing at the same time
// - String strTemp - OPTIONAL - name of temperature sensor to send to ST Cloud (defaults to "temperature")
// - String strHumid - OPTIONAL - name of humidity sensor to send to ST Cloud (defaults to "humidity")
// - bool In_C - OPTIONAL - true = Report Celsius, false = Report Farenheit (Farentheit is the default)
// - byte filterConstant - OPTIONAL - Value from 5% to 100% to determine how much filtering/averaging is performed 100 = none (default), 5 = maximum
//
// Filtering/Averaging
//
// Filtering the value sent to ST is performed per the following equation
//
// filteredValue = (filterConstant/100 * currentValue) + ((1 - filterConstant/100) * filteredValue)
//
// This class supports receiving configuration data from the SmartThings cloud via the ST App. A user preference
// can be configured in your phone's ST App, and then the "Configure" tile will send the data for all sensors to
// the ST Shield. For PollingSensors, this data is handled in the beSMart() function.
//
// TODO: Determine a method to persist the ST Cloud's Polling Interval data
//
// Change History:
//
// Date Who What
// ---- --- ----
// 2015-01-03 Dan & Daniel Original Creation
// 2015-01-17 Dan Ogorchock Added optional temperature and humidity device names in constructor to allow multiple Temp/Humidity sensors
// 2015-01-17 Dan Ogorchock Added optional temperature and humidity device names in constructor to allow multiple Temp/Humidity sensors
// 2015-03-29 Dan Ogorchock Optimized use of the DHT library (made it static) to reduce SRAM memory usage at runtime.
// 2017-06-27 Dan Ogorchock Added optional Celsius reading argument
// 2017-08-17 Dan Ogorchock Added optional filter constant argument and to transmit floating point values to SmartThings
// 2018-03-24 Josh Hill Modified library to use Si7021 over I2C
//
//******************************************************************************************
#include "PS_Adafruit_Si7021_TempHumidity.h"
#include "Constants.h"
#include "Everything.h"
#include "Adafruit_Si7021.h"
namespace st
{
//private
//public
//constructor - called in your sketch's global variable declaration section
PS_Adafruit_Si7021_TempHumidity::PS_Adafruit_Si7021_TempHumidity(const __FlashStringHelper *name, unsigned int interval, int offset, String strTemp, String strHumid, bool In_C, byte filterConstant) :
PollingSensor(name, interval, offset),
m_fTemperatureSensorValue(-1.0),
m_fHumiditySensorValue(-1.0),
m_strTemperature(strTemp),
m_strHumidity(strHumid),
m_In_C(In_C)
{
//check for upper and lower limit and adjust accordingly
if ((filterConstant <= 0) || (filterConstant >= 100))
{
m_fFilterConstant = 1.0;
}
else if (filterConstant <= 5)
{
m_fFilterConstant = 0.05;
}
else
{
m_fFilterConstant = float(filterConstant) / 100;
}
}
//destructor
PS_Adafruit_Si7021_TempHumidity::~PS_Adafruit_Si7021_TempHumidity()
{
}
//SmartThings Shield data handler (receives configuration data from ST - polling interval, and adjusts on the fly)
void PS_Adafruit_Si7021_TempHumidity::beSmart(const String &str)
{
String s = str.substring(str.indexOf(' ') + 1);
if (s.toInt() != 0) {
st::PollingSensor::setInterval(s.toInt() * 1000);
if (st::PollingSensor::debug) {
Serial.print(F("PS_Adafruit_Si7021_TempHumidity::beSmart set polling interval to "));
Serial.println(s.toInt());
}
}
else {
if (st::PollingSensor::debug)
{
Serial.print(F("PS_Adafruit_Si7021_TempHumidity::beSmart cannot convert "));
Serial.print(s);
Serial.println(F(" to an Integer."));
}
}
}
//initialization routine - get first set of readings and send to ST cloud
void PS_Adafruit_Si7021_TempHumidity::init()
{
delay(1500); //Needed to prevent "Unknown Error" on first read of DHT Sensori (possibly not necessary with Si7021)
bool status;
status = Si7021Sensor.begin();
if (!status) {
Serial.println("Could not find a valid Si7021 sensor, check wiring!");
while (1);
}
getData();
}
//function to get data from sensor and queue results for transfer to ST Cloud
void PS_Adafruit_Si7021_TempHumidity::getData()
{
// READ DATA
//Humidity
if (m_fHumiditySensorValue == -1.0)
{
Serial.println("First time through Humidity)");
m_fHumiditySensorValue = Si7021Sensor.readHumidity(); //first time through, no filtering
}
else
{
m_fHumiditySensorValue = (m_fFilterConstant * Si7021Sensor.readHumidity()) + (1 - m_fFilterConstant) * m_fHumiditySensorValue;
}
//Temperature
if (m_fTemperatureSensorValue == -1.0)
{
Serial.println("First time through Termperature)");
//first time through, no filtering
if (m_In_C == false)
{
m_fTemperatureSensorValue = (Si7021Sensor.readTemperature() * 1.8) + 32.0; //Scale from Celsius to Farenheit
}
else
{
m_fTemperatureSensorValue = Si7021Sensor.readTemperature();
}
}
else
{
if (m_In_C == false)
{
m_fTemperatureSensorValue = (m_fFilterConstant * ((Si7021Sensor.readTemperature() * 1.8) + 32.0)) + (1 - m_fFilterConstant) * m_fTemperatureSensorValue;
}
else
{
m_fTemperatureSensorValue = (m_fFilterConstant * Si7021Sensor.readTemperature()) + (1 - m_fFilterConstant) * m_fTemperatureSensorValue;
}
}
// DISPLAY DATA
//Serial.print(m_nHumiditySensorValue, 1);
//Serial.print(F(",\t\t"));
//Serial.print(m_nTemperatureSensorValue, 1);
//Serial.println();
Everything::sendSmartString(m_strTemperature + " " + String(m_fTemperatureSensorValue));
Everything::sendSmartString(m_strHumidity + " " + String(m_fHumiditySensorValue));
}
//initialize static members
Adafruit_Si7021 PS_Adafruit_Si7021_TempHumidity::Si7021Sensor = Adafruit_Si7021();
}

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lib/ST_Anything_Adafruit_Si7021_TempHumidity/PS_Adafruit_Si7021_TempHumidity.h Normal file
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//******************************************************************************************
// File: PS_Adafruit_Si7021_TempHumidity.h
// Authors: Dan G Ogorchock & Daniel J Ogorchock (Father and Son) & Josh Hill
//
// Summary: PS_Adafruit_Si7021_TempHumidity is a class which implements both the SmartThings "Temperature Measurement"
// and "Relative Humidity Measurement" device capabilities.
// It inherits from the st::PollingSensor class. The current version uses I2C to measure the
// temperature and humidity from an Si7021 sensor. This was tested with a generic Si7021 sensor from AliExpress.
//
// Create an instance of this class in your sketch's global variable section
// For Example: st::PS_Adafruit_Si7021_TempHumidity sensor2("temphumid1", 120, 7, "temperature1", "humidity1", false);
//
// st::PS_Adafruit_Si7021_TempHumidity() constructor requires the following arguments
// - String &name - REQUIRED - the name of the object - must match the Groovy ST_Anything DeviceType tile name
// - long interval - REQUIRED - the polling interval in seconds
// - long offset - REQUIRED - the polling interval offset in seconds - used to prevent all polling sensors from executing at the same time
// - String strTemp - OPTIONAL - name of temperature sensor to send to ST Cloud (defaults to "temperature")
// - String strHumid - OPTIONAL - name of humidity sensor to send to ST Cloud (defaults to "humidity")
// - bool In_C - OPTIONAL - true = Report Celsius, false = Report Farenheit (Farentheit is the default)
// - byte filterConstant - OPTIONAL - Value from 5% to 100% to determine how much filtering/averaging is performed 100 = none (default), 5 = maximum
//
// Filtering/Averaging
//
// Filtering the value sent to ST is performed per the following equation
//
// filteredValue = (filterConstant/100 * currentValue) + ((1 - filterConstant/100) * filteredValue)
//
// This class supports receiving configuration data from the SmartThings cloud via the ST App. A user preference
// can be configured in your phone's ST App, and then the "Configure" tile will send the data for all sensors to
// the ST Shield. For PollingSensors, this data is handled in the beSMart() function.
//
// TODO: Determine a method to persist the ST Cloud's Polling Interval data
//
// Change History:
//
// Date Who What
// ---- --- ----
// 2015-01-03 Dan & Daniel Original Creation
// 2015-01-17 Dan Ogorchock Added optional temperature and humidity device names in constructor to allow multiple Temp/Humidity sensors
// 2015-01-17 Dan Ogorchock Added optional temperature and humidity device names in constructor to allow multiple Temp/Humidity sensors
// 2015-03-29 Dan Ogorchock Optimized use of the DHT library (made it static) to reduce SRAM memory usage at runtime.
// 2017-06-27 Dan Ogorchock Added optional Celsius reading argument
// 2017-08-17 Dan Ogorchock Added optional filter constant argument and to transmit floating point values to SmartThings
// 2018-03-24 Josh Hill Modified library to use Si7021 over I2C
//
//******************************************************************************************
#ifndef ST_PS_SI7021_H
#define ST_PS_SI7021_H
#include "PollingSensor.h"
#include "Adafruit_Si7021.h"
namespace st
{
class PS_Adafruit_Si7021_TempHumidity: public PollingSensor
{
private:
float m_fTemperatureSensorValue;//current Temperature value
float m_fHumiditySensorValue; //current Humidity Value
static Adafruit_Si7021 Si7021Sensor; //I2C
String m_strTemperature; //name of temparature sensor to use when transferring data to ST Cloud
String m_strHumidity; //name of temparature sensor to use when transferring data to ST Cloud
bool m_In_C; //Return temp in C
float m_fFilterConstant; //Filter constant % as floating point from 0.00 to 1.00
public:
//constructor - called in your sketch's global variable declaration section
PS_Adafruit_Si7021_TempHumidity(const __FlashStringHelper *name, unsigned int interval, int offset, String strTemp = "temperature1", String strHumid = "humidity1", bool In_C = false, byte filterConstant = 100);
//destructor
virtual ~PS_Adafruit_Si7021_TempHumidity();
//SmartThings Shield data handler (receives configuration data from ST - polling interval, and adjusts on the fly)
virtual void beSmart(const String &str);
//initialization routine
virtual void init();
//function to get data from sensor and queue results for transfer to ST Cloud
virtual void getData();
//gets
inline float getTemperatureSensorValue() const { return m_fTemperatureSensorValue; }
inline float getHumiditySensorValue() const { return m_fHumiditySensorValue; }
};
}
#endif