//-----------------------------------------------------< library LCD >
#include <LiquidCrystal_I2C.h>
#include <Wire.h>
LiquidCrystal_I2C lcd(0x27,20,4);

//-----------------------------------------------------< define >
char input;
char state = '0';

int temp;
int lux;
int humi;
int maptemp;
int maplux;
int maphumi;

unsigned long LstTime = 0;

#define led1 2
#define led2 3
#define led3 4
#define led4 5
#define led5 6
#define led6 7
#define led7 8

int LEDvalues = 0;


//-----------------------------------------------------< setup >
void setup() {
  Serial.begin(9600);

  lcd.init(); //lcd.begin();
  lcd.backlight();

  pinMode(A0,INPUT);  //Temp
  pinMode(A1,INPUT);  //light
  pinMode(A2,INPUT);  //humidity

  for(int i = 2; i <= 7; i++){
    pinMode(i,OUTPUT);
  }
}

//-----------------------------------------------------< loop >
void loop() {
  //------------< Interupt >

  if(millis() - LstTime >= 500){
    LstTime = millis();
    //------------- start
    lcd.clear();
    Fucn_Temp();
    Fucn_Light();
    Fucn_SoilHumi();
    //------------- end
  }
  Func_StateMachine();
}


//-----------------------------------------------------< Func_StateMachine >
void Func_StateMachine(){
  switch(state){
    case '0': //main
      Fucn_LCDcase0();
      LEDvalues = 0;
      Fucn_VolumnLED();
      Serial.println("state :" + String(state));  
      //------------< Read Input >
      input = Serial.read();
      //------------
      if(input == '1'){
        state = '1';
      }
      if(input == '2'){
        state = '2';
      }
      if(input == '3'){
        state = '3';
      }
      break;

    case '1': //temp
      Fucn_LCDcase1();
      LEDvalues = maptemp;
      Fucn_VolumnLED();
      Serial.println("state :" + String(state));
      //------------< Read Input >
      input = Serial.read();
      //------------
      if(input == '0'){
        state = '0';
      }
      break;

    case '2': //light
      Fucn_LCDcase2();
      LEDvalues = maplux;
      Fucn_VolumnLED();
      Serial.println("state :" + String(state));
      //------------< Read Input >
      input = Serial.read();
      //------------
      if(input == '0'){
        state = '0';
      }
      break;

    case '3': //humidity
      Fucn_LCDcase3();
      LEDvalues = maphumi;
      Fucn_VolumnLED();
      Serial.println("state :" + String(state));
      //------------< Read Input >
      input = Serial.read();
      //------------
      if(input == '0'){
        state = '0';
      }
      break;
  }
}


//-----------------------------------------------------< Fucn_Temp >
void Fucn_Temp(){
  temp = analogRead(A0);
  maptemp = map(temp,115,953,0,7); // minold, maxold, minnew,maxnew
}
//-----------------------------------------------------< Fucn_Light >
void Fucn_Light(){
  lux = analogRead(A1);
  maplux = map(lux,8,1015,0,7);  // minold, maxold, minnew,maxnew
}
//-----------------------------------------------------< Fucn_SoilHumi >
void Fucn_SoilHumi(){
  humi = analogRead(A2);
  maphumi = map(humi,8,1015,0,7);  // minold, maxold, minnew,maxnew
}


//-----------------------------------------------------< Fucn_LCDcase0 >
void Fucn_LCDcase0(){
  lcd.setCursor(0, 0);  lcd.print("1: RawTemp");
  lcd.setCursor(0, 1);  lcd.print("2: Light");
  lcd.setCursor(0, 2);  lcd.print("3: SoilHumi");
  lcd.setCursor(13,3);   lcd.print("[input]");
}
//-----------------------------------------------------< Fucn_LCDcase1 >
void Fucn_LCDcase1(){
  lcd.setCursor(0, 0);  lcd.print("[RawTemp]");
  lcd.setCursor(7, 1);  lcd.print(temp);
  lcd.setCursor(12, 1); lcd.print("t");
  lcd.setCursor(13, 3); lcd.print("0: back");
}
//-----------------------------------------------------< Fucn_LCDcase2 >
void Fucn_LCDcase2(){
  lcd.setCursor(0, 0);  lcd.print("[Light]");
  lcd.setCursor(7, 1);  lcd.print(lux);
  lcd.setCursor(12, 1); lcd.print("lux");
  lcd.setCursor(13, 3); lcd.print("0: back");
}
//-----------------------------------------------------< Fucn_LCDcase3 >
void Fucn_LCDcase3(){
  lcd.setCursor(0, 0);  lcd.print("[SoilHumi]");
  lcd.setCursor(7, 1);  lcd.print(humi);
  lcd.setCursor(12, 1); lcd.print("H");
  lcd.setCursor(13, 3); lcd.print("0: back");
}


//-----------------------------------------------------< Fucn_VolumnLED >
void Fucn_VolumnLED(){
  if(LEDvalues == 0){
    digitalWrite(led1,0);
    digitalWrite(led2,0);
    digitalWrite(led3,0);
    digitalWrite(led4,0);
    digitalWrite(led5,0);
    digitalWrite(led6,0);
    digitalWrite(led7,0);
  }
  if(LEDvalues == 1){
    digitalWrite(led1,1);
    digitalWrite(led2,0);
    digitalWrite(led3,0);
    digitalWrite(led4,0);
    digitalWrite(led5,0);
    digitalWrite(led6,0);
    digitalWrite(led7,0);
  }
  if(LEDvalues == 2){
    digitalWrite(led1,1);
    digitalWrite(led2,1);
    digitalWrite(led3,0);
    digitalWrite(led4,0);
    digitalWrite(led5,0);
    digitalWrite(led6,0);
    digitalWrite(led7,0);
  }
  if(LEDvalues == 3){
    digitalWrite(led1,1);
    digitalWrite(led2,1);
    digitalWrite(led3,1);
    digitalWrite(led4,0);
    digitalWrite(led5,0);
    digitalWrite(led6,0);
    digitalWrite(led7,0);
  }
  if(LEDvalues == 4){
    digitalWrite(led1,1);
    digitalWrite(led2,1);
    digitalWrite(led3,1);
    digitalWrite(led4,1);
    digitalWrite(led5,0);
    digitalWrite(led6,0);
    digitalWrite(led7,0);
  }
  if(LEDvalues == 5){
    digitalWrite(led1,1);
    digitalWrite(led2,1);
    digitalWrite(led3,1);
    digitalWrite(led4,1);
    digitalWrite(led5,1);
    digitalWrite(led6,0);
    digitalWrite(led7,0);
  }
  if(LEDvalues == 6){
    digitalWrite(led1,1);
    digitalWrite(led2,1);
    digitalWrite(led3,1);
    digitalWrite(led4,1);
    digitalWrite(led5,1);
    digitalWrite(led6,1);
    digitalWrite(led7,0);
  }
  if(LEDvalues == 7){
    digitalWrite(led1,1);
    digitalWrite(led2,1);
    digitalWrite(led3,1);
    digitalWrite(led4,1);
    digitalWrite(led5,1);
    digitalWrite(led6,1);
    digitalWrite(led7,1);
  }
}