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libraries/ezButton/examples/05.MultipleButtonAll/05.MultipleButtonAll.ino

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+/*
+ * Created by ArduinoGetStarted.com
+ *
+ * This example code is in the public domain
+ *
+ * Tutorial page: https://arduinogetstarted.com/tutorials/arduino-button-library
+ *
+ * This example:
+ *   + uses debounce for multiple buttons.
+ *   + reads state of multiple buttons
+ *   + detects the pressed and released events of multiple buttons
+ */
+
+#include <ezButton.h>
+
+ezButton button1(6);  // create ezButton object that attach to pin 6;
+ezButton button2(7);  // create ezButton object that attach to pin 7;
+ezButton button3(8);  // create ezButton object that attach to pin 8;
+
+void setup() {
+  Serial.begin(9600);
+  button1.setDebounceTime(50); // set debounce time to 50 milliseconds
+  button2.setDebounceTime(50); // set debounce time to 50 milliseconds
+  button3.setDebounceTime(50); // set debounce time to 50 milliseconds
+}
+
+void loop() {
+  button1.loop(); // MUST call the loop() function first
+  button2.loop(); // MUST call the loop() function first
+  button3.loop(); // MUST call the loop() function first
+
+  int btn1State = button1.getState();
+  int btn2State = button2.getState();
+  int btn3State = button3.getState();
+  Serial.print("button 1 state: ");
+  Serial.println(btn1State);
+  Serial.print("button 2 state: ");
+  Serial.println(btn2State);
+  Serial.print("button 3 state: ");
+  Serial.println(btn3State);
+
+  if(button1.isPressed())
+    Serial.println("The button 1 is pressed");
+
+  if(button1.isReleased())
+    Serial.println("The button 1 is released");
+
+  if(button2.isPressed())
+    Serial.println("The button 2 is pressed");
+
+  if(button2.isReleased())
+    Serial.println("The button 2 is released");
+
+  if(button3.isPressed())
+    Serial.println("The button 3 is pressed");
+
+  if(button3.isReleased())
+    Serial.println("The button 3 is released");
+}