Rotary Control

Rotoriaus jungimas (pavyzdinis pirmas pav.)

Rotory Pin	ESP32 Pin
Switch	GPIO 25
GND	GND
Out A (CLK)	GPIO 27
GND	GND
Out B (DT)	GPIO 26

Kodas:

#define CLK 27
#define DT  26
#define SW  25

int counter = 0;
int currentStateCLK;
int lastStateCLK;
bool buttonPressed = false;

void setup() {
  pinMode(CLK, INPUT);
  pinMode(DT, INPUT);
  pinMode(SW, INPUT_PULLUP);  // Use internal pull-up for switch

  Serial.begin(115200);
  lastStateCLK = digitalRead(CLK);
}

void loop() {
  currentStateCLK = digitalRead(CLK);

  if (currentStateCLK != lastStateCLK && currentStateCLK == 1) {
    if (digitalRead(DT) != currentStateCLK) {
      counter++;
    } else {
      counter--;
    }

    Serial.print("Position: ");
    Serial.println(counter);
  }

  lastStateCLK = currentStateCLK;

  if (digitalRead(SW) == LOW && !buttonPressed) {
    Serial.println("Button Pressed");
    buttonPressed = true;
  }

  if (digitalRead(SW) == HIGH && buttonPressed) {
    buttonPressed = false;
  }

  delay(1); // debouncing
}