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Update Reference.md

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@ -351,7 +351,7 @@ This is a **base class** from which all HomeSpan Characteristics are derived, an
* returns a pointer to the Characteristic itself so that the method can be chained during instantiation * returns a pointer to the Characteristic itself so that the method can be chained during instantiation
* example: `(new Characteristic::RotationSpeed())->setUnit("percentage");` * example: `(new Characteristic::RotationSpeed())->setUnit("percentage");`
### *SpanButton(int pin, uint16_t longTime, uint16_t singleTime, uint16_t doubleTime, buttonType)* ### *SpanButton(int pin, uint16_t longTime, uint16_t singleTime, uint16_t doubleTime, boolean *triggerType(int))*
Creating an instance of this **class** attaches a pushbutton handler to the ESP32 *pin* specified. Creating an instance of this **class** attaches a pushbutton handler to the ESP32 *pin* specified.
@ -364,14 +364,15 @@ The first argument is required; the rest are optional:
* *longTime* - the minimum time (in millis) required for the button to be pressed and held to trigger a Long Press (default=2000 ms) * *longTime* - the minimum time (in millis) required for the button to be pressed and held to trigger a Long Press (default=2000 ms)
* *singleTime* - the minimum time (in millis) required for the button to be pressed to trigger a Single Press (default=5 ms) * *singleTime* - the minimum time (in millis) required for the button to be pressed to trigger a Single Press (default=5 ms)
* *doubleTime* - the maximum time (in millis) allowed between two Single Presses to qualify as a Double Press (default=200 ms) * *doubleTime* - the maximum time (in millis) allowed between two Single Presses to qualify as a Double Press (default=200 ms)
* *buttonType* - specifies the type of pushbutton. Choices are: * *triggerType* - pointer to a boolean function that returns `true` or `false` depending on whether or not a "press" has been triggered on the specified *pin*. You may choose from the following built-in functions:
* `PushButton::GROUNDED` - a button that connects *pin* to GROUND when pushed (this is the default)
* `PushButton::POWERED` - a button that connects *pin* to +3.3V when pushed * `SpanButton::TRIGGER_ON_LOW` - triggers when *pin* is driven LOW. Suitable for buttons that connect *pin* to GROUND (this is the default when triggerType is not specified)
* `PushButton::TOUCH`- a button that is connected to a touch sensor (not available on ESP32-C3) * `SpanButton::TRIGGER_ON_HIGH` - triggers when *pin* is driven HIGH. Suitable for buttons that connect *pin* to VCC (typically 3.3V)
* `SpanButton::TRIGGER_ON_TOUCH`- uses the device's touch-sensor peripheral to trigger when a sensor attached to *pin* has been touched (not available on ESP32-C3)
A second form of *SpanButton()* is provided for convenience: A second form of *SpanButton()* is provided for convenience:
* `SpanButton(int pin, buttonType, uint16_t longTime=2000, uint16_t singleTime=5, uint16_t doubleTime=200)` * `SpanButton(int pin, boolean *triggerType(int), uint16_t longTime=2000, uint16_t singleTime=5, uint16_t doubleTime=200)`
* this allows you to set the *pin* and *buttonType* while keeping the other parameters optional * this allows you to set the *pin* and *triggerType* while keeping the other parameters optional
Trigger Rules: Trigger Rules:
* If button is pressed and continuously held, a Long Press will be triggered every longTime ms until the button is released * If button is pressed and continuously held, a Long Press will be triggered every longTime ms until the button is released