36 lines
1.7 KiB
C
36 lines
1.7 KiB
C
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////////////////////////////////////
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// DEVICE-SPECIFIC LED SERVICES //
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////////////////////////////////////
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// HERE'S WHERE WE DEFINE OUR NEW LED SERVICE!
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struct DEV_LED : Service::LightBulb { // First we create a derived class from the HomeSpan LightBulb Service
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int ledPin; // this variable stores the pin number defined for this LED
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SpanCharacteristic *power; // here we create a generic pointer to a SpanCharacteristic named "power" that we will use below
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// Next we define the constructor for DEV_LED. Note that it takes one argument, ledPin,
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// which specifies the pin to which the LED is attached.
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DEV_LED(int ledPin) : Service::LightBulb(){
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power=new Characteristic::On(); // this is where we create the On Characterstic we had previously defined in setup(). Save this in the pointer created above, for use below
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this->ledPin=ledPin; // don't forget to store ledPin...
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pinMode(ledPin,OUTPUT); // ...and set the mode for ledPin to be an OUTPUT (standard Arduino function)
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} // end constructor
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// Finally, we over-ride the default update() method with instructions that actually turn on/off the LED. Note update() returns type "StatusCode"
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StatusCode update(){
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digitalWrite(ledPin,power->newValue.BOOL); // use a standard Arduino function to turn on/off ledPin based on the boolean variable power->newValue.BOOL
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return(StatusCode::OK); // return OK status code. There are other possibilties we will explore in later examples.
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} // update
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};
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//////////////////////////////////
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