untung99play.xyz: Arduino Button Library
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When using buttons, beginners usually run into the following troubles:
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Detecting the pressed and released events
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Managing timestamp when debouncing for multiple buttons
The ezButton (easy button) library is designed to solve all of the above problems and make it easy to use for not only beginners but also experienced users. It is created by ArduioGetStarted.com.
The library can be used for push button, momentary switches, toggle switch, magnetic contact switch (door sensor)...
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Uses the internal pull-up resistor to avoid the floating value
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Supports debounce to eliminate the chattering phenomenon
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Supports the pressed and released events
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Supports the counting (for FALLING, RISING and BOTH)
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Easy to use with multiple buttons
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All functions are non-blocking
On Arduino IDE, Go to Tools Manage Libraries
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Search “ezButton”, then find the button library by ArduinoGetStarted
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Click Install button to install ezButton library.
Or you can download it on Github
This function creates a new instance of the ezButton class that represents a particular button attached to your Arduino board.
pin: int – Arduino’s pin that connects to the button.
A new instance of the ezButton class.
This function is used to set the debounce time. The debounce time takes effect on getState(), isPressed(), isReleased() and getCount().
button.setDebounceTime(time);
time: unsigned long – debounce time in milliseconds
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This function returns the state of the button. If the debounce time is set, the returned state is the state after debouncing. We MUST call button.loop() function before using this function.
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The state of button. Since the ezButton library used the internal pull-up resistor, the state will be HIGH (1) when no press, and LOW (0) when pressed. If the debounce time is set, the returned state is the state after debouncing.
This function returns the current state of the button without debouncing. It is equivalent to digitalRead().
None
The current state of button without debouncing.
This function check whether a button is pressed or not. We MUST call button.loop() function before using this function.
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true if the button is pressed, false otherwise
This function check whether a button is released or not. We MUST call button.loop() function before using this function.
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true if the button is released, false otherwise
This function sets the count mode.
button.setCountMode(mode)
mode: int – count mode. The available count modes include: COUNT_FALLING, COUNT_RISING and COUNT_BOTH.
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This function returns the count value. We MUST call button.loop() function before using this function.
None.
The count value. If the debounce time is set, the returned value is the value after debouncing.
This function set the counter value to 0.
None.
None.
loop()
This function does debounce and updates the state of the button. It MUST be called before using getState(), isPressed(), isReleased() and getCount() functions.
None
None
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