94 lines
2.9 KiB
Arduino
94 lines
2.9 KiB
Arduino
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/*
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* A demo of a simple AceButton used to handle the events from one button.
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* Similar to HelloButton with some additions;
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* - more comments
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* - prints out the button events to the Serial monitor
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* - enables the all button events, including LongPress and RepeatPress
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* - suppresses lower-level events when higher-level events are detected
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* (e.g. Clicked suppressed Released, DoubleClicked suppresses the
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* second Clicked, LongPressed suppressed the Released, etc.)
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* - setup() determines if a button was pressed during reboot
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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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delay(1000); // some microcontrollers reboot twice
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Serial.begin(115200);
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while (! Serial); // Wait until Serial is ready - Leonardo/Micro
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Serial.println(F("setup(): begin"));
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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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// Configure the ButtonConfig with the event handler, and enable all higher
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// level events.
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ButtonConfig* buttonConfig = button.getButtonConfig();
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buttonConfig->setEventHandler(handleEvent);
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buttonConfig->setFeature(ButtonConfig::kFeatureClick);
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buttonConfig->setFeature(ButtonConfig::kFeatureDoubleClick);
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buttonConfig->setFeature(ButtonConfig::kFeatureLongPress);
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buttonConfig->setFeature(ButtonConfig::kFeatureRepeatPress);
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// Check if the button was pressed while booting
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if (button.isPressedRaw()) {
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Serial.println(F("setup(): button was pressed while booting"));
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}
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Serial.println(F("setup(): ready"));
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}
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void loop() {
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// Should be called every 4-5ms or faster, for the default debouncing time
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// of ~20ms.
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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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// Print out a message for all events.
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Serial.print(F("handleEvent(): eventType: "));
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Serial.print(eventType);
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Serial.print(F("; buttonState: "));
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Serial.println(buttonState);
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// Control the LED only for the Pressed and Released events.
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// Notice that if the MCU is rebooted while the button is pressed down, no
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// event is triggered and the LED remains off.
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switch (eventType) {
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case AceButton::kEventPressed:
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digitalWrite(LED_PIN, LED_ON);
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break;
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case AceButton::kEventReleased:
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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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