//#####RECOGNISING POSITION AND DIRECTION OF THE ROTARY ENCODER AND DISPLAYING IT IN SERIAL MONITOR ######
/*
int counter =0;
String dir="";
unsigned long last_run=0;

void setup() {
Serial.begin(9600);
attachInterrupt(digitalPinToInterrupt(3), shaft_moved, FALLING);  
pinMode(4, INPUT);

}

void loop() {
Serial.print("counter :");  
Serial.print(counter);
Serial.print(" direction :");
Serial.println(dir);

}

void shaft_moved(){
  if (millis()-last_run>5){
  if (digitalRead(4)==1){
    counter++;
    dir="CW";
  }
  if(digitalRead(4)==0){
    counter--;
    dir="CCW";
  }
  last_run=millis();
}
}

//#### ROTARY ENCODER LIMITING THE COUNTER RANGE 5 TO 10 ####

int counter =0;
String dir="";
unsigned long last_run=0;

void setup() {
Serial.begin(9600);
attachInterrupt(digitalPinToInterrupt(3), shaft_moved, FALLING);  
pinMode(4, INPUT);

}

void loop() {
Serial.print("counter :");  
Serial.print(counter);
Serial.print(" direction :");
Serial.println(dir);

}

void shaft_moved(){
  if (millis()-last_run>5){
  if (digitalRead(4)==1){
    if(counter<10)
    counter++;
    dir="CW";
  }
  if(digitalRead(4)==0){
    if(counter>5)
    counter--;
    dir="CCW";
  }
  last_run=millis();
}
}

//#### CONTROLLING CUSTOM 7 SEGMENT DISPLAY (SHIFT REGISTER DRIVEN) WITH ROTARY ENCODER ####
*/ 
int datapin =8;
int latchpin = 9;
int clockpin = 10;
int counter=0;
String dir="";
unsigned long last_run =0;

int digits [10] [8] {
  {0,1,1,1,1,1,1,0},   //0
  {0,0,1,1,0,0,0,0},  //1
  {0,1,1,0,1,1,0,1},  //2
  {0,1,1,1,1,0,0,1},  //3
  {0,0,1,1,0,0,1,1},  //4
  {0,1,0,1,1,0,1,1},  //5
  {0,1,0,1,1,1,1,1},  //6
  {0,1,1,1,0,0,0,0},  //7
  {0,1,1,1,1,1,1,1},  //8
  {0,1,1,1,1,0,1,1},  //9

}; 
void setup(){
Serial.begin(9600);
attachInterrupt(digitalPinToInterrupt(3), shaft_moved, LOW);  
attachInterrupt(digitalPinToInterrupt(2), reset_to_0, FALLING);  
pinMode(4, INPUT);
pinMode(datapin, OUTPUT);
pinMode(latchpin, OUTPUT);
pinMode(clockpin, OUTPUT);
pinMode(2, INPUT_PULLUP);

}

void loop() {
  displaydigit(counter);

Serial.print("counter :");  
Serial.print(counter);
Serial.print(" direction :");
Serial.println(dir);
  }


void shaft_moved(){
  if (millis()-last_run>5){
  if (digitalRead(4)==1){
    if(counter<10)
    counter++;
    dir="CW";
  }
  if(digitalRead(4)==0){
    if(counter>5)
    counter--;
    dir="CCW";
  }
  last_run=millis();
}
}

void reset_to_0(){
  counter=0;
}
void displaydigit (int Digit){
  digitalWrite(latchpin, LOW);
  for(int i = 7; i>=0; i--){
    digitalWrite(clockpin, LOW);
    if(digits[Digit] [i] ==1)
    digitalWrite(datapin, LOW);
    if(digits [Digit] [i] ==0)
    digitalWrite(datapin, HIGH);
    digitalWrite(clockpin, HIGH);
  }
  digitalWrite(latchpin, HIGH);
}