plant robot

#include <LiquidCrystal_I2C.h>
#include <string.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);

const int dirPin = 2;
const int stepPin_Pot = 3;
const int dirPin_Shield = 4;
const int stepPin_Shield = 9;
const int light_sensor_Pin_1 = A1;
const int light_sensor_Pin_2 = A2;
const int light_sensor_Pin_3 = A3;
const int light_sensor_Pin_4 = A4;
const int humidity_sensor = A0;
const int lampPin = 5;
const int pumpPin = 6;
const int buttonPin1 = 7;
const int buttonPin2 = 8;
const int encoder1 = 11;
const int encoder2 = 12;

int light_requirement_1 = 0;
int light_requirement_2 = 0;
int light_requirement_3 = 0;
int time = 0;
int water_need = 400;
int light_need = 400;
int buttonState1 = 0;
int buttonState2 = 0;
int counter = 0;
int shield_position = 0;
int L_min = 3600*light_need;

String plant = "";


void setup() {

  cli();//stop interrupts
  pinMode(stepPin_Pot, OUTPUT);
  pinMode(dirPin, OUTPUT);
  pinMode(dirPin_Shield, OUTPUT);
  pinMode(lampPin, OUTPUT);
  pinMode(pumpPin, OUTPUT);
  pinMode(buttonPin1, INPUT);
  pinMode(buttonPin2, INPUT);
  pinMode(encoder1, INPUT);
  pinMode(encoder2, INPUT);
  digitalWrite(dirPin,HIGH);
  digitalWrite(dirPin_Shield,HIGH);
  Serial.begin(9600);
  TCCR1A = 0; //register 1A reset to 0
  TCCR1B = 0; //register 2A reset to 0
  TCCR1B |= B00000101; // prescaler 1024, Pq 1B et pas 1A
  TCNT1 = 0; // timer1 reset to 0
  TIMSK1 |= B00000010; //Set OCIE1A to 1 so we enable compare match A
  OCR1A = 15625; // 1s every 15625 pulses
  sei();//allow interrupts
  lcd.init();
  lcd.backlight();
  lcd.setCursor(1, 0);
  lcd.print("Choose Plant");
  reset_pos();

}

void reset_pos() {
  while (digitalRead(encoder1)==LOW){
    digitalWrite(stepPin_Pot,HIGH);
    delayMicroseconds(500);
    digitalWrite(stepPin_Pot,LOW);
    delayMicroseconds(500);
  }
  while (digitalRead(encoder2)==LOW){
    digitalWrite(stepPin_Shield,HIGH);
    delayMicroseconds(500);
    digitalWrite(stepPin_Shield,LOW);
    delayMicroseconds(500);
  }
}

void plant_config() {

  buttonState1 = digitalRead(buttonPin1);
  buttonState2 = digitalRead(buttonPin2);

  if (buttonState1 == HIGH && counter<20){ // lcd display doesn't show more than the 20 plants
    counter += 1;
    if (counter==1){
      plant = "Sweet Flag";
      water_need = 500;
      light_need = 810;
      delayMicroseconds(500);
    }
    if (counter==2){
      plant = "Min Sweet Flag";
      water_need = 500;
      light_need = 810;
      delayMicroseconds(500);
    }
    if (counter==3){
      plant = "Magic Flower";
      water_need = 500;
      light_need = 810;
      delayMicroseconds(500);
    }
    if (counter==4){
      plant = "Maidenhair fern";
      water_need = 500;
      light_need = 810;
      delayMicroseconds(500);
    }
    if (counter==5){
      plant = "Crinkle-leaf";
      water_need = 500;
      light_need = 810;
      delayMicroseconds(500);
    }
    if (counter==6){
      plant = "Plover Eggs";
      water_need = 500;
      light_need = 810;
      delayMicroseconds(500);
    }
    if (counter==7){
      plant = "Silver Vase";
      water_need = 500;
      light_need = 810;
      delayMicroseconds(500);
    }
    if (counter==8){
      plant = "Coral Berry";
      water_need = 500;
      light_need = 810;
      delayMicroseconds(500);
    }
    if (counter==9){
      plant = "Bromeliad";
      water_need = 500;
      light_need = 810;
      delayMicroseconds(500);
    }
    if (counter==10){
      plant = "Basket Vine";
      water_need = 500;
      light_need = 2150;
      delayMicroseconds(500);
    }
    if (counter==11){
      plant = "Lipstick Vine";
      water_need = 500;
      light_need = 2150;
      delayMicroseconds(500);
    }
    if (counter==12){
      plant = "Chinese Everg.";
      water_need = 500;
      light_need = 270;
      delayMicroseconds(500);
    }
    if (counter==13){
      plant = "Silver King";
      water_need = 500;
      light_need = 270;
      delayMicroseconds(500);
    }
    if (counter==14){
      plant = "Silver Queen";
      water_need = 500;
      light_need = 270;
      delayMicroseconds(500);
    }
    if (counter==15){
      plant = "Plume Asparagus";
      water_need = 500;
      light_need = 810;
      delayMicroseconds(500);
    }
    if (counter==16){
      plant = "Crystal Anthur.";
      water_need = 500;
      light_need = 810;
      delayMicroseconds(500);
    }
    if (counter==17){
      plant = "Nest Anthur.";
      water_need = 500;
      light_need = 810;
      delayMicroseconds(500);
    }
    if (counter==18){
      plant = "Flamingo Flower";
      water_need = 500;
      light_need = 810;
      delayMicroseconds(500);
    }
    if (counter==19){
      plant = "Zebra Plant";
      water_need = 500;
      light_need = 2150;
      delayMicroseconds(500);
    }
    if (counter==20){
      plant = "Wax Cissus";
      water_need = 500;
      light_need = 2150;
      delayMicroseconds(500);
    }
    L_min = 600*light_need; // light need min for 15min
    light_requirement_1 = 0;
    light_requirement_2 = 0;
    light_requirement_3 = 0;
    time = 0;
    lcd.clear();
    lcd.setCursor(1, 0);
    lcd.print(plant);
  }
  if (buttonState2 == HIGH && counter>1){ //lcd doesn't change when
    counter -= 1;
    if (counter==1){
      plant = "Sweet Flag";
      water_need = 500;
      light_need = 810;
      delayMicroseconds(500);
    }
    if (counter==2){
      plant = "Min Sweet Flag";
      water_need = 500;
      light_need = 810;
      delayMicroseconds(500);
    }
    if (counter==3){
      plant = "Magic Flower";
      water_need = 500;
      light_need = 810;
      delayMicroseconds(500);
    }
    if (counter==4){
      plant = "Maidenhair fern";
      water_need = 500;
      light_need = 810;
      delayMicroseconds(500);
    }
    if (counter==5){
      plant = "Crinkle-leaf";
      water_need = 500;
      light_need = 810;
      delayMicroseconds(500);
    }
    if (counter==6){
      plant = "Plover Eggs";
      water_need = 500;
      light_need = 810;
      delayMicroseconds(500);
    }
    if (counter==7){
      plant = "Silver Vase";
      water_need = 500;
      light_need = 810;
      delayMicroseconds(500);
    }
    if (counter==8){
      plant = "Coral Berry";
      water_need = 500;
      light_need = 810;
      delayMicroseconds(500);
    }
    if (counter==9){
      plant = "Bromeliad";
      water_need = 500;
      light_need = 810;
      delayMicroseconds(500);
    }
    if (counter==10){
      plant = "Basket Vine";
      water_need = 500;
      light_need = 2150;
      delayMicroseconds(500);
    }
    if (counter==11){
      plant = "Lipstick Vine";
      water_need = 500;
      light_need = 2150;
      delayMicroseconds(500);
    }
    if (counter==12){
      plant = "Chinese Everg.";
      water_need = 500;
      light_need = 270;
      delayMicroseconds(500);
    }
    if (counter==13){
      plant = "Silver King";
      water_need = 500;
      light_need = 270;
      delayMicroseconds(500);
    }
    if (counter==14){
      plant = "Silver Queen";
      water_need = 500;
      light_need = 270;
      delayMicroseconds(500);
    }
    if (counter==15){
      plant = "Plume Asparagus";
      water_need = 500;
      light_need = 810;
      delayMicroseconds(500);
    }
    if (counter==16){
      plant = "Crystal Anthur.";
      water_need = 500;
      light_need = 810;
      delayMicroseconds(500);
    }
    if (counter==17){
      plant = "Nest Anthur.";
      water_need = 500;
      light_need = 810;
      delayMicroseconds(500);
    }
    if (counter==18){
      plant = "Flamingo Flower";
      water_need = 500;
      light_need = 810;
      delayMicroseconds(500);
    }
    if (counter==19){
      plant = "Zebra Plant";
      water_need = 500;
      light_need = 2150;
      delayMicroseconds(500);
    }
    if (counter==20){
      plant = "Wax Cissus";
      water_need = 500;
      light_need = 2150;
      delayMicroseconds(500);
    }
    L_min = 600*light_need; // light need for 15min
    light_requirement_1 = 0;
    light_requirement_2 = 0;
    light_requirement_3 = 0;
    time = 0;
    lcd.clear();
    lcd.setCursor(1, 0);
    lcd.print(plant);
  }
}

void loop() {

  plant_config();

  if ((light_requirement_1 <= L_min && light_requirement_2 <= L_min && light_requirement_3 <= L_min) && time>2700){ //45min
    digitalWrite(lampPin,HIGH);
    while (light_requirement_1 <= L_min && light_requirement_2 <= L_min && light_requirement_3 <= L_min){
      digitalWrite(lampPin,HIGH);
    }
  }
  else {
    digitalWrite(lampPin,LOW);
  }
  if ((light_requirement_1 >= L_min || light_requirement_2 >= L_min || light_requirement_3 >= L_min) && time<3600){
    for(int i = 0; i<1600; i++){
      digitalWrite(stepPin_Pot,HIGH);
      delayMicroseconds(500);
      digitalWrite(stepPin_Pot,LOW);
      delayMicroseconds(500);
    }
    shield_position = 1;
    int diff_time = 3600 - time;// 3600 is full day time
    while (diff_time>0){
      diff_time = 3600 - time;
    }
  }
}


ISR(TIMER1_COMPA_vect){
  time += 1;
  int light_value_1 = analogRead(light_sensor_Pin_1);
  int light_value_2 = analogRead(light_sensor_Pin_2);
  int light_value_3 = analogRead(light_sensor_Pin_3);
  int humidity_value = analogRead(humidity_sensor);

  if (humidity_value < water_need){
    digitalWrite(pumpPin, HIGH);
  }
  if (humidity_value > water_need+30){
    digitalWrite(pumpPin, LOW);
  }

  light_requirement_1 += light_value_1;
  light_requirement_2 += light_value_2;
  light_requirement_3 += light_value_3;

  if (digitalRead(lampPin) == LOW && (light_requirement_1 >= 10000 || (time >= 600 && light_requirement_1 < 1000))){ //10min
    light_requirement_1 = 0;
    for(int i = 0; i<1600; i++){
      digitalWrite(stepPin_Pot,HIGH);
      delayMicroseconds(500);
      digitalWrite(stepPin_Pot,LOW);
      delayMicroseconds(500);
    }
  }
  else if (digitalRead(lampPin) == LOW && (light_requirement_2 >= 18000 || (time >= 600 && light_requirement_2 < 18000))){ //10min
    light_requirement_2 = 0;
    for(int i = 0; i<1600; i++){
      digitalWrite(stepPin_Pot,HIGH);
      delayMicroseconds(500);
      digitalWrite(stepPin_Pot,LOW);
      delayMicroseconds(500);
    }
  }
  else if (digitalRead(lampPin) == LOW && (light_requirement_3 >= 18000 || (time >= 600 && light_requirement_3 < 18000))){ //10min
    light_requirement_3 = 0;
    for(int i = 0; i<1600; i++){
      digitalWrite(stepPin_Pot,HIGH);
      delayMicroseconds(500);
      digitalWrite(stepPin_Pot,LOW);
      delayMicroseconds(500);
    }
  }

  else if (time>3600) {
    if (shield_position==1){
      shield_position = 0;
      for(int i = 3200; i>0; i--){
      digitalWrite(stepPin_Shield,HIGH);
      delayMicroseconds(500);
      digitalWrite(stepPin_Shield,LOW);
      delayMicroseconds(500);
      }
    }
  }
  else if (time>3600){ // 60min
    time = 0;
    light_requirement_1 = 0;
    light_requirement_2 = 0;
    light_requirement_3 = 0;
  }

  TCNT1  = 0;
}