126 lines
7.3 KiB
C
126 lines
7.3 KiB
C
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////////////////////////////////////
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// DEVICE-SPECIFIC LED SERVICES //
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////////////////////////////////////
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struct DEV_GarageDoor : Service::GarageDoorOpener { // A Garage Door Opener
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Characteristic::CurrentDoorState *current; // reference to the Current Door State Characteristic (specific to Garage Door Openers)
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Characteristic::TargetDoorState *target; // reference to the Target Door State Characteristic (specific to Garage Door Openers)
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SpanCharacteristic *obstruction; // reference to the Obstruction Detected Characteristic (specific to Garage Door Openers)
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DEV_GarageDoor() : Service::GarageDoorOpener(){ // constructor() method
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current=new Characteristic::CurrentDoorState(1); // initial value of 1 means closed
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target=new Characteristic::TargetDoorState(1); // initial value of 1 means closed
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obstruction=new Characteristic::ObstructionDetected(false); // initial value of false means NO obstruction is detected
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Serial.print("Configuring Garage Door Opener"); // initialization message
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Serial.print("\n");
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} // end constructor
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boolean update(){ // update() method
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// see HAP Documentation for details on what each value represents
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if(target->getNewVal()==0){ // if the target-state value is set to 0, HomeKit is requesting the door to be in open position
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LOG1("Opening Garage Door\n");
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current->setVal(2); // set the current-state value to 2, which means "opening"
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obstruction->setVal(false); // clear any prior obstruction detection
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} else {
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LOG1("Closing Garage Door\n"); // else the target-state value is set to 1, and HomeKit is requesting the door to be in the closed position
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current->setVal(3); // set the current-state value to 3, which means "closing"
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obstruction->setVal(false); // clear any prior obstruction detection
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}
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return(true); // return true
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} // update
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void loop(){ // loop() method
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if(current->getVal()==target->getVal()) // if current-state matches target-state there is nothing do -- exit loop()
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return;
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if(current->getVal()==3 && random(100000)==0){ // here we simulate a random obstruction, but only if the door is closing (not opening)
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current->setVal(4); // if our simulated obstruction is triggered, set the curent-state to 4, which means "stopped"
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obstruction->setVal(true); // and set obstruction-detected to true
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LOG1("Garage Door Obstruction Detected!\n");
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}
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if(current->getVal()==4) // if the current-state is stopped, there is nothing more to do - exit loop()
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return;
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// This last bit of code only gets called if the door is in a state that represents actively opening or actively closing.
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// If there is an obstruction, the door is "stopped" and won't start again until the HomeKit Controller requests a new open or close action
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if(target->timeVal()>5000) // simulate a garage door that takes 5 seconds to operate by monitoring time since target-state was last modified
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current->setVal(target->getVal()); // set the current-state to the target-state
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} // loop
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};
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////////////////////////////////////
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struct DEV_WindowShade : Service::WindowCovering { // A motorized Window Shade with Hold Feature
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SpanCharacteristic *current; // reference to a "generic" Current Position Characteristic (used by a variety of different Service)
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SpanCharacteristic *target; // reference to a "generic" Target Position Characteristic (used by a variety of different Service)
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DEV_WindowShade() : Service::WindowCovering(){ // constructor() method
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current=new Characteristic::CurrentPosition(0); // Window Shades have positions that range from 0 (fully lowered) to 100 (fully raised)
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target=new Characteristic::TargetPosition(0); // Window Shades have positions that range from 0 (fully lowered) to 100 (fully raised)
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target->setRange(0,100,10); // set the allowable target-position range to 0-100 IN STEPS of 10
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Serial.print("Configuring Motorized Window Shade"); // initialization message
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Serial.print("\n");
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} // end constructor
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boolean update(){ // update() method
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// The logic below is based on how HomeKit appears to operate in practice, which is NOT consistent with
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// HAP documentation. In that document HomeKit seems to support fully opening or fully closing a window shade, with
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// an optional control to HOLD the window shade at a given in-between position while it is moving.
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// In practice, HomeKit does not appear to implement any form of a HOLD control button, even if you instantiate that
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// Characteristic. Instead, HomeKit provides a full slider control, similar to the brightness control for a lightbulb,
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// that allows you to set the exact position of the window shade from 0-100%. This obviates the need to any sort of HOLD button.
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// The resulting logic is also very simple:
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if(target->getNewVal()>current->getVal()){ // if the target-position requested is greater than the current-position, simply log a "raise" message
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LOG1("Raising Shade\n"); // ** there is nothing more to do - HomeKit keeps track of the current-position so knows raising is required
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} else
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if(target->getNewVal()<current->getVal()){ // if the target-position requested is less than the current-position, simply log a "raise" message
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LOG1("Lowering Shade\n"); // ** there is nothing more to do - HomeKit keeps track of the current-position so knows lowering is required
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}
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return(true); // return true
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} // update
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void loop(){ // loop() method
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// Here we simulate a window shade that takes 5 seconds to move to its new target posiiton
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if(current->getVal()!=target->getVal() && target->timeVal()>5000){ // if 5 seconds have elapsed since the target-position was last modified...
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current->setVal(target->getVal()); // ...set the current position to equal the target position
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}
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// Note there is no reason to send continuous updates of the current position to the HomeKit. HomeKit does NOT display the
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// current position. Rather, it simply compares the value of the current position to the value of target positon as set by the
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// the user in the Home App. If it finds current and target positions are the same, it knows the shade is stopped. Otherwise
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// it will report the shade is raising or lowering depending on whether the specified target state is greater or less than
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// the current state.
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// According to HAP, the Characteristic Position State is also required. However, this seems duplicative and is NOT needed
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// at all given the way HomeKit uses current position.
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} // loop
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};
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