#include "AiEsp32RotaryEncoder.h"


#define ROTARY_ENCODER_A_PIN 16
#define ROTARY_ENCODER_B_PIN 15
#define ROTARY_ENCODER_BUTTON_PIN 17
#define ROTARY_ENCODER_VCC_PIN -1 /* 27 put -1 of Rotary encoder Vcc is connected directly to 3,3V; else you can use declared output pin for powering rotary encoder */

//depending on your encoder - try 1,2 or 4 to get expected behaviour
//#define ROTARY_ENCODER_STEPS 1
//#define ROTARY_ENCODER_STEPS 2
#define ROTARY_ENCODER_STEPS 4

int lastEncoderPos = 0;

//instead of changing here, rather change numbers above
AiEsp32RotaryEncoder rotaryEncoder = AiEsp32RotaryEncoder(ROTARY_ENCODER_A_PIN, ROTARY_ENCODER_B_PIN, ROTARY_ENCODER_BUTTON_PIN, ROTARY_ENCODER_VCC_PIN, ROTARY_ENCODER_STEPS);

void rotary_onButtonClick()
{
	static unsigned long lastTimePressed = 0;
	//ignore multiple press in that time milliseconds
	if (millis() - lastTimePressed < 500)
	{
		return;
	}
	lastTimePressed = millis();
	Serial.print("button pressed ");
	Serial.print(millis());
	Serial.println(" milliseconds after restart");
}

void rotary_loop()
{
	//dont print anything unless value changed
	if (rotaryEncoder.encoderChanged())
	{
		Serial.print("Value: ");
		Serial.println(rotaryEncoder.readEncoder());
    if (rotaryEncoder.readEncoder() > lastEncoderPos)
    {
      lastEncoderPos = rotaryEncoder.readEncoder();
      Serial.println("Rotating CW");
    } else if (rotaryEncoder.readEncoder() < lastEncoderPos)
    {
      lastEncoderPos = rotaryEncoder.readEncoder();
      Serial.println("Rotating CCW");

    }
  }

	if (rotaryEncoder.isEncoderButtonClicked())
	{
		rotary_onButtonClick();
	}
}

void IRAM_ATTR readEncoderISR()
{
	rotaryEncoder.readEncoder_ISR();
}

void setup()
{
	Serial.begin(115200);

	//we must initialize rotary encoder
	rotaryEncoder.begin();
	rotaryEncoder.setup(readEncoderISR);
	//set boundaries and if values should cycle or not
	//in this example we will set possible values between 0 and 1000;
	bool circleValues = false;
	rotaryEncoder.setBoundaries(-1000, 1000, circleValues); //minValue, maxValue, circleValues true|false (when max go to min and vice versa)

	/*Rotary acceleration introduced 25.2.2021.
   * in case range to select is huge, for example - select a value between 0 and 1000 and we want 785
   * without accelerateion you need long time to get to that number
   * Using acceleration, faster you turn, faster will the value raise.
   * For fine tuning slow down.
   */
	//rotaryEncoder.disableAcceleration(); //acceleration is now enabled by default - disable if you dont need it
	rotaryEncoder.setAcceleration(250); //or set the value - larger number = more accelearation; 0 or 1 means disabled acceleration
}

void loop()
{
	//in loop call your custom function which will process rotary encoder values
	rotary_loop();
	delay(50); //or do whatever you need to do...
}