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EncoderTester/EncoderTester.ino

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+// define the pins for the rotary encoder
+const int pinA = 2;
+const int pinB = 3;
+const int sw = 4;
+
+
+
+// define the current and previous state of the rotary encoder pins
+int currA = 0;
+int currB = 0;
+int prevA = 0;
+int prevB = 0;
+int prevButton = 1;
+int currButton = 0;
+
+// define the current and previous positions of the rotary encoder
+int position = 0;
+int prevPosition = 0;
+
+
+
+void setup() {
+  // set the pin modes for the rotary encoder
+  pinMode(pinA, INPUT_PULLUP);
+  pinMode(pinB, INPUT_PULLUP);
+  pinMode(sw, INPUT_PULLUP);
+
+  // enable pull-up resistors on the rotary encoder pins
+ // digitalWrite(pinA, HIGH);
+ // digitalWrite(pinB, HIGH);
+
+  // initialize the serial communication
+  Serial.begin(9600);
+}
+
+void loop() {
+  // read the current state of the rotary encoder
+  currA = digitalRead(pinA);
+  currB = digitalRead(pinB);
+
+
+  //read state of button
+  currButton = digitalRead(sw);
+
+  // check if the state of pin A has changed
+  if (currA != prevA) {
+    
+    // if pin A has changed, check the state of pin B to determine direction
+    if (currA == currB) {
+      // clockwise rotation
+      position++;
+    } else {
+      // counter-clockwise rotation
+      position--;
+    }
+  delay(50);
+  
+    Serial.println(position);
+  }
+
+
+  
+  if(currButton == 0 && prevButton == 1){
+    Serial.println("button press");
+    delay(20);
+  }
+
+  prevButton = currButton;
+
+
+  // update the previous state and position of the rotary encoder
+  prevA = currA;
+  prevB = currB;
+  prevPosition = position;
+  
+}