108 lines
3.5 KiB
C++
108 lines
3.5 KiB
C++
//******************************************************************************************
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// File: PS_Ultrasonic.cpp
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// Authors:
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//
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// Summary: PS_Ultrasonic is a class which implements a custom Level device capability.
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// It inherits from the st::PollingSensor class.
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//
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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_Ultrasonic sensor1(F("ultrasonic1"), 60, 0, PIN_ULTRASONIC_T, PIN_ULTRASONIC_E);
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//
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// st::PS_Ultrasonic() 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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// - byte digitalTriggerPin - REQUIRED - the Arduino Pin to be used as a digital output to trigger ultrasonic
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// - byte digitalEchoPin - REQUIRED - the Arduino Pin to be used as a digital input to read the echo
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//
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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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//
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//
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//
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//******************************************************************************************
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#include "PS_Ultrasonic.h"
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#include "Constants.h"
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#include "Everything.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_Ultrasonic::PS_Ultrasonic(const __FlashStringHelper *name, unsigned int interval, int offset, byte digitalTriggerPin, byte digitalEchoPin):
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PollingSensor(name, interval, offset),
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m_nSensorValue(0)
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{
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setPin(digitalTriggerPin,digitalEchoPin);
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}
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//destructor
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PS_Ultrasonic::~PS_Ultrasonic()
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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_Ultrasonic::beSmart(const String &str)
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{
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String s = str.substring(str.indexOf(' ') + 1);
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Serial.print("st string ##### ");
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Serial.println(str);
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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_Ultrasonic::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_Ultrasonic::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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//function to get data from sensor and queue results for transfer to ST Cloud
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void PS_Ultrasonic::getData()
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{
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//int m_nSensorValue=map(analogRead(m_nAnalogInputPin), SENSOR_LOW, SENSOR_HIGH, MAPPED_LOW, MAPPED_HIGH);
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long duration;
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// Clears the trigPin
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digitalWrite(m_nDigitalTriggerPin, LOW);
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delayMicroseconds(2);
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// Sets the trigPin on HIGH state for 10 micro seconds
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digitalWrite(m_nDigitalTriggerPin, HIGH);
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delayMicroseconds(10);
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digitalWrite(m_nDigitalTriggerPin, LOW);
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// Reads the echoPin, returns the sound wave travel time in microseconds
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duration = pulseIn(m_nDigitalEchoPin, HIGH);
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// Calculating the distance
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m_nSensorValue = duration*0.034/2;
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// queue the distance to send to smartthings
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Everything::sendSmartString(getName() + " " + String(m_nSensorValue));
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}
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void PS_Ultrasonic::setPin(byte &trigPin,byte &echoPin)
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{
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m_nDigitalTriggerPin=trigPin;
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m_nDigitalEchoPin=echoPin;
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pinMode(m_nDigitalTriggerPin, OUTPUT); // Sets the trigPin as an Output
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pinMode(m_nDigitalEchoPin, INPUT); // Sets the echoPin as an Input
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}
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}
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