/* Rotary encoder read example */
#define ENC_A 14
#define ENC_B 15
#define ENC_PORT PINC
int count;
 
void setup()
{
  /* Setup encoder pins as inputs */
  pinMode(ENC_A, INPUT);
  digitalWrite(ENC_A, HIGH);
  pinMode(ENC_B, INPUT);
  digitalWrite(ENC_B, HIGH);
  Serial.begin (115200);
  Serial.println("Start");
}
 
void loop()
{
    static uint8_t counter = 0;      //this variable will be changed by encoder input
    int8_t tmpdata;
    /**/
    tmpdata = read_encoder();
    if( tmpdata ) {
        if( tmpdata == 1 ) {
            count ++;}
        if (count==2){
            Serial.println("Gauche ");
            count =0;}

        if( tmpdata == -1 ) {
            count--;}
        if (count==-2){
            Serial.println("Droite ");
            count =0;}
            
/*        Serial.print("Counter value: ");*/
/*        Serial.println(counter, DEC);*/
/*        counter += tmpdata;*/
    }
}
 
/* returns change in encoder state (-1,0,1) */
int8_t read_encoder()
{
  int8_t enc_states[] = {0,-1,1,0,1,0,0,-1,-1,0,0,1,0,1,-1,0};
  static uint8_t old_AB = 0;
  /**/
  old_AB <<= 2;                   //remember previous state
  old_AB |= ( ENC_PORT & 0x03 );  //add current state
  return ( enc_states[( old_AB & 0x0f )]);
}