#include <IRremote.h>

// Infrared receiving pin
int RECV_PIN = 12; 

// DC driver MOTOR
#define ENABLE 5
#define DIRA 3
#define DIRB 4

// Define a variable to save the motor rotation speed
int rotationSpeed = 0; 

// Comandi IR
long ir_zero = 16738455;
long ir_uno = 16724175;
long ir_due = 16718055;
long ir_tre = 16743045;
long ir_quattro = 16716015;
long ir_cinque = 16726215;
long ir_sei = 16734885;
long ir_sette = 16728765;
long ir_otto = 16730805;
long ir_nove = 16732845;
long ir_start = 16753245;
long ir_stop = 16712445;
long ir_piu = 16736925;
long ir_meno = 16754775;

IRrecv irrecv(RECV_PIN); // Create a class object used to receive class
decode_results results; // Create a decoding results class object

void setup()
{
  Serial.begin(9600); // Initialize the serial port and set the baud rate to 9600

  // Start the receiver 
  irrecv.enableIRIn(); 

  //DC driver set pin direction
  pinMode(ENABLE,OUTPUT);
  pinMode(DIRA,OUTPUT);
  pinMode(DIRB,OUTPUT);
}

void loop() {
  // Attendo comando da telecomando IR
  if (irrecv.decode(&results)) { // Waiting for decoding
    //Serial.println(results.value); // Print out the decoded results
    rotationSpeed = 0;
    
    if (results.value == ir_zero) {
      Serial.println("ZERO");
      rotationSpeed = 0;
    }
    else if (results.value == ir_uno) {
      Serial.println("UNO");
      rotationSpeed = round(255 * 0.1);  // velocità 0-255
    }
    else if (results.value == ir_due) {
      Serial.println("DUE");
      rotationSpeed = round(255 * 0.2);  // velocità 0-255
    }
    else if (results.value == ir_tre) {
      Serial.println("TRE");
      rotationSpeed = round(255 * 0.3);  // velocità 0-255
    }
    else if (results.value == ir_quattro) {
      Serial.println("QUATTRO");
      rotationSpeed = round(255 * 0.4);  // velocità 0-255
    }
    else if (results.value == ir_cinque) {
      Serial.println("CINQUE");
      rotationSpeed = round(255 * 0.5);  // velocità 0-255
    }
    else if (results.value == ir_sei) {
      Serial.println("SEI");
      rotationSpeed = round(255 * 0.6);  // velocità 0-255
    }
    else if (results.value == ir_sette) {
      Serial.println("SETTE");
      rotationSpeed = round(255 * 0.7);  // velocità 0-255
    }
    else if (results.value == ir_otto) {
      Serial.println("OTTO");
      rotationSpeed = round(255 * 0.8);  // velocità 0-255
    }
    else if (results.value == ir_nove) {
      Serial.println("NOVE");
      rotationSpeed = round(255 * 0.9);  // velocità 0-255
    }

    irrecv.resume(); // Receive the next value
  }

  //---PWM example, full speed then slow
  analogWrite(ENABLE,rotationSpeed); //enable on
  digitalWrite(DIRA,HIGH); //one way
  digitalWrite(DIRB,LOW);
  
  delay(100);
}