127 lines
4.4 KiB
C++
127 lines
4.4 KiB
C++
//******************************************************************************************
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// File: PS_AdafruitThermocouple.cpp
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// Authors: Dan G Ogorchock
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//
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// Summary: PS_AdafruitThermocouple is a class which implements the SmartThings "Temperature Measurement"
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// device capability.
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// It inherits from the st::PollingSensor class. The current version uses a digital input to measure the
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// temperature Adafruit MAX31855 series thermocouple sensor.
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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_AdafruitThermocouple sensor1(F("temperature1"), 120, 3, PIN_SCLK, PIN_CS, PIN_MISO);
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//
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// st::PS_TemperatureHumidity() constructor requires the following arguments
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// - String &name - REQUIRED - the name of the object - must match the Groovy ST_Anything DeviceType tile name
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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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// - int8_t pinSCLK - REQUIRED - the Arduino Pin to be used as the MAX31855 SCLK
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// - int8_t pinCS - REQUIRED - the Arduino Pin to be used as the MAX31855 CS
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// - int8_t pinMISO - REQUIRED - the Arduino Pin to be used as the MAX31855 MISO
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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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// 2015-03-24 Dan Ogorchock Original Creation
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// 2018-08-30 Dan Ogorchock Modified comment section above to comply with new Parent/Child Device Handler requirements
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// 2019-06-24 Dan Ogorchock Improved false reading handling
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//
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//
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//******************************************************************************************
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#include "PS_AdafruitThermocouple.h"
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#include "Constants.h"
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#include "Everything.h"
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#include <SPI.h>
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#include <Adafruit_MAX31855.h>
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namespace st
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{
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//private
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//public
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//constructor - called in your sketch's global variable declaration section
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PS_AdafruitThermocouple::PS_AdafruitThermocouple(const __FlashStringHelper *name, unsigned int interval, int offset, int8_t pinSCLK, int8_t pinCS, int8_t pinMISO):
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PollingSensor(name, interval, offset),
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m_dblTemperatureSensorValue(0.0),
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m_Adafruit_MAX31855(Adafruit_MAX31855(pinSCLK, pinCS, pinMISO))
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{
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}
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//destructor
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PS_AdafruitThermocouple::~PS_AdafruitThermocouple()
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{
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}
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//SmartThings Shield data handler (receives configuration data from ST - polling interval, and adjusts on the fly)
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void PS_AdafruitThermocouple::beSmart(const String &str)
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{
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String s = str.substring(str.indexOf(' ') + 1);
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if (s.toInt() != 0) {
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st::PollingSensor::setInterval(s.toInt() * 1000);
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if (st::PollingSensor::debug) {
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Serial.print(F("PS_AdafruitThermocouple::beSmart set polling interval to "));
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Serial.println(s.toInt());
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}
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}
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else {
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if (st::PollingSensor::debug)
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{
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Serial.print(F("PS_AdafruitThermocouple::beSmart cannot convert "));
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Serial.print(s);
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Serial.println(F(" to an Integer."));
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}
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}
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}
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//initialization routine - get first set of readings and send to ST cloud
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void PS_AdafruitThermocouple::init()
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{
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getData();
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}
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//function to get data from sensor and queue results for transfer to ST Cloud
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void PS_AdafruitThermocouple::getData()
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{
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double tempTemperature;
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double totalTemperature = 0.0;
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int numGoodValues = 0;
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for (int i = 1; i <= 3; i++) {
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tempTemperature = m_Adafruit_MAX31855.readFarenheit();
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if (isnan(tempTemperature))
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{
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if (st::PollingSensor::debug) {
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Serial.println(F("PS_AdafruitThermocouple:: Error Reading Thermocouple."));
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}
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}
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else
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{
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totalTemperature = totalTemperature + tempTemperature;
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numGoodValues++;
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}
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}
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if (numGoodValues > 0) {
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m_dblTemperatureSensorValue = totalTemperature / numGoodValues;
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Everything::sendSmartString(getName() + " " + String(int(m_dblTemperatureSensorValue)));
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}
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else
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{
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Serial.println(F("PS_AdafruitThermocouple:: Error Reading Thermocouple multiple times. No good value measured this cycle."));
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}
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}
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} |