#include <LowPower.h>

//define pin
#define  PWM_pin  10   // PWM jel képzés
#define  ON1_pin  3    // DigitalON 1 Sebesseg
#define  ON2_pin  4    // DigitalON 2 Sebesseg
#define  ON3_pin  5    // DigitalON 3 Sebesseg
#define  Relay_pin 8  // Relé pin

//define konstans
int basePWM = 0;
int targetPWM = 0;
int currentSpeed = 0;
int sleepState = 0;

//sebesség (0-255), 50% -> 80% -> 100%
int PWMspeed0 = 0;
int PWMspeed1 = 128;
int PWMspeed2 = 200;
int PWMspeed3 = 255;

void setup() {
  // set pin type
   pinMode (Relay_pin, OUTPUT);
   pinMode (ON1_pin, INPUT_PULLUP);
   pinMode (ON2_pin, INPUT_PULLUP);
   pinMode (ON3_pin, INPUT_PULLUP);
   pinMode (PWM_pin, OUTPUT);

// Start serial
   Serial.begin (9600);

// elso inditasnal a rele ki lesz kapcsolva
   digitalWrite(Relay_pin, HIGH);

// Alvo allapot kikapcsol
   sleepState = 0;

   currentSpeed = 0;
}


void wakeUp()
{
    // Just a handler for the pin interrupt.
}

void loop() {
//par dolog alvashoz
  sleepState = 0;
  attachInterrupt(0, ON1_pin, HIGH);


//nem akarjuk minden ciklusban kapcsolni a relét ezért megjegyezzük a sebességet
//és csak akkor kapcsoljuk ha eltérő

//függvények a relé kapcsolására és a PWM szint beállítására attol függően melyik PIN magas

if ((digitalRead(ON1_pin)== LOW) && (currentSpeed != 1)) {
  currentSpeed = 1;
  digitalWrite(Relay_pin, LOW);
  targetPWM = PWMspeed1;
} else if ((digitalRead(ON2_pin)== LOW) && (currentSpeed != 2)){
  currentSpeed = 2;
  digitalWrite(Relay_pin, LOW);
  targetPWM = PWMspeed2;
} else if ((digitalRead(ON3_pin)== LOW) && (currentSpeed != 3)){
  currentSpeed = 3;
  digitalWrite(Relay_pin, LOW);
  targetPWM = PWMspeed3;
} else if ((digitalRead(ON1_pin)== HIGH) && (digitalRead(ON2_pin)== HIGH) && (digitalRead(ON3_pin)== HIGH) && (currentSpeed != 0)){
  currentSpeed = 0;
  digitalWrite(Relay_pin, HIGH);
  targetPWM = PWMspeed0;
}

if (currentSpeed == 1) {
  Serial.println("Pin 3 ON, Speed 50%");
} else if (currentSpeed == 2) {
  Serial.println("Pin 4 ON, Speed 80%");
} else if (currentSpeed == 3) {
  Serial.println("Pin 5 ON, Speed 100%");
} else if (currentSpeed == 0) {
  Serial.println("All Pin OFF, Speed 0%");
}

//Funkcio a motor felpörgetésére vagy lepörgetésére
if ((basePWM != targetPWM) && (basePWM < targetPWM) && (currentSpeed != 0)){
  for (int i = basePWM; i <= targetPWM; i++) {
    analogWrite(PWM_pin, i);
    delay(2);
}
basePWM == targetPWM;
} else if ((basePWM != targetPWM) && (basePWM > targetPWM) && (currentSpeed != 0)){
    for (int i = basePWM; i >= targetPWM; i--) {
    analogWrite(PWM_pin, i);
    delay(2);
}
basePWM == targetPWM;
}

//Elszamolunk 5ig, és ha nem változik semmi alvoba rakjuk az arduino-t.
//Ha alszik interrupt segitsegevel felebreszthetjuk a pin 3-on (elso sebesseg)
//amig 5ig szamol nem tudjuk ujra elinditani a porszivot
//if ((currentSpeed == 0) && (sleepState == 0)) {
//    for (int i = 1; i <= 5; i++) {
//    delay(100);
//}
//sleepState = 1;
//Serial.println("Sleep mode...");
//LowPower.powerDown(SLEEP_FOREVER, ADC_OFF, BOD_OFF);
//}
//
////nem aludtunk el
//detachInterrupt(0);
}