78 lines
2.5 KiB
C++
78 lines
2.5 KiB
C++
/*
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* A demo that uses kFeatureSuppressClickBeforeDoubleClick to distinguish a
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* Clicked event from a DoubleClicked event. Click turns on the LED. A
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* DoubleClick turns off the LED.
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*
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* The only way to suppress the Clicked "after" a DoubleClicked is to postpone
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* the sending of the Clicked event until getDoubleClickDelay() time after the
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* Clicked. At that time, we can tell if a DoubleClicked has occurred or not.
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* But this means that every Clicked event is delayed by (kClickDelay +
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* kDoubleClickDelay + 2 * kDebounceDelay) which is 700 ms using the default
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* values, and you'll notice this delay in the LED turning on.
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*
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* The other side-effect is that if a user doesn't input a clean Click (which
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* results in a normal Press/Release sequence), then nothing happens to the LED.
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* Depending on the application, this may or may not be the desirable result.
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* See Also:
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* examples/ClickVersusDoubleClickUsingReleased/
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* - uses the Released event instead of the Clicked event
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*/
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#include <AceButton.h>
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using namespace ace_button;
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// The pin number attached to the button.
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const int BUTTON_PIN = 2;
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#ifdef ESP32
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// Different ESP32 boards use different pins
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const int LED_PIN = 2;
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#else
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const int LED_PIN = LED_BUILTIN;
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#endif
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// LED states. Some microcontrollers wire their built-in LED the reverse.
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const int LED_ON = HIGH;
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const int LED_OFF = LOW;
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// One button wired to the pin at BUTTON_PIN. Automatically uses the default
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// ButtonConfig. The alternative is to call the AceButton::init() method in
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// setup() below.
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AceButton button(BUTTON_PIN);
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void handleEvent(AceButton*, uint8_t, uint8_t);
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void setup() {
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// initialize built-in LED as an output
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pinMode(LED_PIN, OUTPUT);
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// Button uses the built-in pull up register.
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pinMode(BUTTON_PIN, INPUT_PULLUP);
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ButtonConfig* buttonConfig = button.getButtonConfig();
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buttonConfig->setEventHandler(handleEvent);
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buttonConfig->setFeature(ButtonConfig::kFeatureDoubleClick);
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buttonConfig->setFeature(
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ButtonConfig::kFeatureSuppressClickBeforeDoubleClick);
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}
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void loop() {
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// Should be called every 20ms or faster for the default debouncing time
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// of ~50ms.
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button.check();
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}
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// The event handler for the button.
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void handleEvent(AceButton* /* button */, uint8_t eventType,
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uint8_t /* buttonState */) {
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switch (eventType) {
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case AceButton::kEventClicked:
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digitalWrite(LED_PIN, LED_ON);
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break;
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case AceButton::kEventDoubleClicked:
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digitalWrite(LED_PIN, LED_OFF);
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break;
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}
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}
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