#define led1  7
#define led2  10
int count = 0;
int switchPin = 4;                         // button pin
int switchState = HIGH;                    // button value

int pinA = 2;                              // Rotary encoder Pin A / DT
int pinB = 3;                              // Rotary encoder Pin B / CLK
int pinAstateCurrent = LOW;                // Current state of Pin A
int pinAStateLast = pinAstateCurrent;      // Last read value of Pin A

void setup() {
  Serial.begin (9600);                     // Initialise the serial monitor

  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode (switchPin, INPUT);       // Enable the switchPin as input with a PULLUP resistor
  digitalWrite(switchPin, HIGH);
  pinMode (pinA, INPUT);                   // Set PinA as input
  pinMode (pinB, INPUT);                   // Set PinB as input
  //digitalWrite(pinA, HIGH);
  //digitalWrite(pinB, HIGH);

  // Atach a CHANGE interrupt to PinB and exectute the update function when this change occurs.
  attachInterrupt(digitalPinToInterrupt(pinB), update, CHANGE);

}

void loop() {

  // BUTTON
  switchState = digitalRead(switchPin);    // Read the digital value of the switch (LOW/HIGH)

  // If the switch is pressed (LOW), print message
  if (switchState == LOW) {
    count = 0;
    Serial.println((String)"Reset strobe. Count = " + count);
  }

  switch (count) {
    case 1: str1();
      break;
    case 2: str2();
      break;
    case 3: str3();
      break;
    case 4: str4();
      break;
    case 5: str5();
      break;
    case 6: str6();
      break;
    case 7: str7();
      break;
  }
}

void update() {
  // ROTATION DIRECTION
  pinAstateCurrent = digitalRead(pinA);    // Read the current state of Pin A

  // If there is a minimal movement of 1 step
  if ((pinAStateLast == LOW) && (pinAstateCurrent == HIGH)) {

    if (digitalRead(pinB) == HIGH) {      // If Pin B is HIGH
      if (count == 0 || count == 1)
        count = 7;
      else
        count--;
      Serial.println((String)"Count = " + count);            // Print on screen
    } else {
      if (count == 7)
        count = 1;
      else
        count++;
      Serial.println((String)"Count = " + count);            // Print on screen
    }

  }

  pinAStateLast = pinAstateCurrent;        // Store the latest read value in the currect state variable

}
// Mode strobe
void str1() {
  setL1(150);
  setL2(150);
}
void str2() {
  setL1(150);
  delay(700);
  setL2(150);
}
void str3() {
  for (int i = 0; i < 3; i++)
    setL1(150);
  for (int i = 0; i < 3; i++)
    setL2(150);
}
void str4() {
  for (int i = 0; i < 3; i++)
  {
    setL1(150);
    delay(150);
  }
  for (int i = 0; i < 3; i++)
  {
    setL2(150);
    delay(150);
  }
}
void str5() {
  digitalWrite(led1, HIGH);
  digitalWrite(led2, HIGH);
  delay(500);
  digitalWrite(led1, LOW);
  digitalWrite(led2, LOW);
  delay(500);
}
void str6() {
  for (int i = 0; i < 5; i++)
  {
    digitalWrite(led1, HIGH);
    digitalWrite(led2, HIGH);
    delay(100);
    digitalWrite(led1, LOW);
    digitalWrite(led2, LOW);
    delay(100);
  }
  delay(500);
}
void str7() {
  str2();
  str4();
  str3();
}
void setL1(int time) {
  digitalWrite(led1, HIGH);
  delay(time);
  digitalWrite(led1, LOW);
}
void setL2(int time) {
  digitalWrite(led2, HIGH);
  delay(time);
  digitalWrite(led2, LOW);
}