Monkfish's LED Stair Lights (proof of concept)

/*
Monkfish's LED stair lights (proof of concept)
*/

  //LED pin assignments
  int led1 = 2;
  int led2 = 3;
  int led3 = 4;
  int led4 = 5;
  int led5 = 6;
  int led6 = 7;
  int led7 = 8;
  int led8 = 9;
  int led9 = 10;

  // button pin assignments
  int b_up = 11; //button at bottom of stairs
  int b_down = 12; //button at top of stairs

  //LED delay settings
  int tOn = 400; //LED On delay
  int tOff = 750; //LED Off delay
  int del = 0; //Delay after action (used for debugging - set to 500-1000 to introduce a delay between each action)

  //variables
  static unsigned activeup = 0; //whether the system is active going upwards
  static unsigned activedown = 0; //whether the system is active going downwards

void setup() { //make with the setups

  //Set Serial
  Serial.begin(9600);
  Serial.println("");
  Serial.println("Activated");
  delay(del);

  //Set LED pins as output
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);
  pinMode(led4, OUTPUT);
  pinMode(led5, OUTPUT);
  pinMode(led6, OUTPUT);
  pinMode(led7, OUTPUT);
  pinMode(led8, OUTPUT);
  pinMode(led9, OUTPUT);

  //Set button pins as input
  pinMode(b_up, INPUT_PULLUP);
  pinMode(b_down, INPUT_PULLUP);

  Serial.println("Pins set");
  delay(del);

  //Clear variables
  int activedown = 0;
  int activeup = 0;

  //Print variables to Serial
  Serial.print("active up: ");
  Serial.println(activeup);
  Serial.print("active down: ");
  Serial.println(activedown);
  delay(del);

  Serial.println("Variables set");
  delay(del);

  Serial.println("");
  Serial.println("Ready");
}


void loop() {  //forever in your loopings

      //Set variables based on pin state
      int up = digitalRead(b_up);
      int down = digitalRead(b_down);

      Serial.print("active up: ");
      Serial.println(activeup);
      Serial.print("active down: ");
      Serial.println(activedown);
      delay(del);

  if (up == LOW){ //Bottom button pressed

      Serial.println("Bottom button pressed!");
      delay(del);

      //Set variables
      Serial.print("active up: ");
      Serial.println(activeup);
      Serial.print("active down: ");
      Serial.println(activedown);
      delay(del);

          if (activeup == 1 || activedown == 1){ //checks if system active

                //If active
                Serial.println("System active!");
                delay(del);

                OffDown(); //function call

          } else {

            //if not active
            Serial.println("System activated (up)");
            delay(del);

            OnUp(); //function call

          }


  }

  if (down == LOW){

      Serial.println("Top button pressed");
      delay(del);

      Serial.print("active up: ");
      Serial.println(activeup);
      Serial.print("active down: ");
      Serial.println(activedown);
      delay(del);

      if (activeup == 1 || activedown == 1){

                Serial.println("System active!");
                delay(del);

                OffUp(); //function call

          } else  {

            Serial.println("System activated (down)");
            delay(del);

            OnDown(); //function call

          }

  }


}

void OnUp(){ //Switches lights on going up

  Serial.println("Switching on lights (up)");
               delay(del);

               //set LEDs on in turn
               digitalWrite(led1, HIGH);
               delay(tOn);
               digitalWrite(led2, HIGH);
               delay(tOn);
               digitalWrite(led3, HIGH);
               delay(tOn);
               digitalWrite(led4, HIGH);
               delay(tOn);
               digitalWrite(led5, HIGH);
               delay(tOn);
               digitalWrite(led6, HIGH);
               delay(tOn);
               digitalWrite(led7, HIGH);
               delay(tOn);
               digitalWrite(led8, HIGH);
               delay(tOn);
               digitalWrite(led9, HIGH);

               activeup = 1; //Set system as active up

               Serial.print("active up: ");
               Serial.println(activeup);
               Serial.print("active down: ");
               Serial.println(activedown);
               delay(del);

               Serial.println("System now active (up)");
               delay(del);

} //end OnUp

void OffUp(){ //switches lights off going up

         Serial.println("Switching lights off (Up)");
         delay(del);


         //sets LEDs off in turn
         digitalWrite(led1, LOW);
         delay(tOff);
         digitalWrite(led2, LOW);
         delay(tOff);
         digitalWrite(led3, LOW);
         delay(tOff);
         digitalWrite(led4, LOW);
         delay(tOff);
         digitalWrite(led5, LOW);
         delay(tOff);
         digitalWrite(led6, LOW);
         delay(tOff);
         digitalWrite(led7, LOW);
         delay(tOff);
         digitalWrite(led8, LOW);
         delay(tOff);
         digitalWrite(led9, LOW);

         //set system as being off
         activeup = 0;
         activedown = 0;

         Serial.print("active up: ");
         Serial.println(activeup);
         Serial.print("active down: ");
         Serial.println(activedown);
         delay(del);

         Serial.println("System not active");
         delay(del);

} //End OffUp

void OnDown(){ //switches lights on going down

         Serial.println("Switching lights on (down)");
         delay(del);

         //set LEDs on in turn
         digitalWrite(led9, HIGH);
         delay(tOn);
         digitalWrite(led8, HIGH);
         delay(tOn);
         digitalWrite(led7, HIGH);
         delay(tOn);
         digitalWrite(led6, HIGH);
         delay(tOn);
         digitalWrite(led5, HIGH);
         delay(tOn);
         digitalWrite(led4, HIGH);
         delay(tOn);
         digitalWrite(led3, HIGH);
         delay(tOn);
         digitalWrite(led2, HIGH);
         delay(tOn);
         digitalWrite(led1, HIGH);

         activedown = 1; //sets system as active down

         Serial.print("active up: ");
         Serial.println(activeup);
         Serial.print("active down: ");
         Serial.println(activedown);
         delay(del);

         Serial.println("System now active (down)");
         delay(del);

} //End OnDown

void OffDown(){ //switches lights off going down

       Serial.println("Switching lights off (down)");
       delay(del);

       //sets LEDs off in turn
       digitalWrite(led9, LOW);
       delay(tOff);
       digitalWrite(led8, LOW);
       delay(tOff);
       digitalWrite(led7, LOW);
       delay(tOff);
       digitalWrite(led6, LOW);
       delay(tOff);
       digitalWrite(led5, LOW);
       delay(tOff);
       digitalWrite(led4, LOW);
       delay(tOff);
       digitalWrite(led3, LOW);
       delay(tOff);
       digitalWrite(led2, LOW);
       delay(tOff);
       digitalWrite(led1, LOW);

       //set system as not active
       activedown = 0;
       activeup = 0;

       Serial.print("active up: ");
       Serial.println(activeup);
       Serial.print("active down: ");
       Serial.println(activedown);
       delay(del);

       Serial.println("System not active");
       delay(del);


}//End OffDown