/*
* December 11 3:25am - added the calibration status without the actual status
*/

/*
 * Very simple menu on an OLED display (with 8 lines of text).
 * Displays menu items from the array menu. Max. number of items is 7.
 * 
 * This sketch uses the library "U8g2", "Bounce2" and uses 3 buttons (up/down/select).
 * 
 */

//Libraries//
//#include <Arduino.h>
#include <U8g2lib.h>
//#include <U8x8lib.h>
#include <Bounce2.h>

//The code runs just fine without these but removing it doesnt rlly save space so...
#ifdef U8X8_HAVE_HW_SPI
#include <SPI.h>
#endif
#ifdef U8X8_HAVE_HW_I2C
#include <Wire.h>
#endif

int cursor = 0;
int j = 0; // Cursor jr
unsigned long previousMillis = 0;
const long interval = 5000;

//OLED Constructor//
//U8X8_SSD1306_128X64_NONAME_HW_I2C display(U8X8_PIN_NONE); //Simulation
U8X8_SH1106_128X64_NONAME_HW_I2C display(U8X8_PIN_NONE); //Actual

//Buttons//
byte button_pins[] = {2,4,3}; // 2 = down; 4 = up; 3 = select
#define NUMBUTTONS sizeof(button_pins)
Bounce *buttons = new Bounce[NUMBUTTONS];

//Menu Items//
#define MENU_SIZE 4
const char *menu[MENU_SIZE] = {"DATA", "SETTINGS", "CALIBRATE", "SLEEP"};
#define DATA_SIZE 5
const char *data_menu[DATA_SIZE] = {"TEMP & HUM", "PM10,2.5,&1.0", "CO2 & TVOC", "ALL", "Back to Menu"};
#define SETTINGS_SIZE 5 
const char *settings_menu[SETTINGS_SIZE] = {"PARAMETERS", "Wi-Fi", "BRIGHTNESS", "RESET", "Back to Menu"};
#define CALIBRATION_SIZE 12
const char *calibration_menu[CALIBRATION_SIZE] = {"Tin", "Tout", "Hin", "Hout", "PM10"," Next Page", "PM2.5", "PM1.0", "CO2", "TVOC", " Previous Page", " Back to Menu"};
#define OFFSET_VALUES_SIZE 12
int offset_values_menu[OFFSET_VALUES_SIZE] = {/* TempIn offset */ 10, /* TempOut offset */ 20, /* HumIn offset */ 30, /* HumOut offset */ 40, /* PM10 offset */ 50, 0, /* PM2.5 offset */ 60, /* PM1.0 offset */ 70, /* CO2 offset */ 80, /* TVOC offset */ 90, 0, 0};

//Sensor Values//
#define SENSOR_INPUT_SIZE 5
int latest_temp1[SENSOR_INPUT_SIZE] = {0,0,0,0,0};
int latest_hum1[SENSOR_INPUT_SIZE] = {0,0,0,0,0};
int latest_temp2[SENSOR_INPUT_SIZE] = {0,0,0,0,0};
int latest_hum2[SENSOR_INPUT_SIZE] = {0,0,0,0,0};
int latest_pm10[SENSOR_INPUT_SIZE] = {0,0,0,0,0};
int latest_pm25[SENSOR_INPUT_SIZE] = {0,0,0,0,0};
int latest_pm1_0[SENSOR_INPUT_SIZE] = {0,0,0,0,0};
int latest_co2[SENSOR_INPUT_SIZE] = {0,0,0,0,0};
int latest_tvoc[SENSOR_INPUT_SIZE] = {0,0,0,0,0};

uint8_t plainhorizontaltiles[8] = {0x30,0x30,0x30,0x30,0x30,0x30,0x30,0x30};
uint8_t perpendiculartiles[8] = {0x30,0x30,0x30,255,255,0x30,0x30,0x30};
uint8_t halfperpendiculartiles[8] = {0,0,0,255,255,0x30,0x30,0x30};
uint8_t verticaltiles[8] = {0,0,0,255,255,0,0,0};
uint8_t topline[8] = {0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80};
uint8_t bottomline[24] = {255,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,255};
uint8_t fullbox[8] = {255,255,255,255,255,255,255,255};

void setup() {
  Serial.begin(9600);

  // [From OP] Make input & enable pull-up resistors on switch pins 
  for(int i=0; i<NUMBUTTONS; i++) {
    buttons[i].attach(button_pins[i], INPUT_PULLUP); // [From OP] setup the bounce instance for the current button
    buttons[i].interval(25); 
  }
  
  display.begin(); //Display = u8x8
  display.setPowerSave(0); //Sleep mode off
  display.setFont(u8x8_font_pxplusibmcgathin_f); //Font lol
  display.setContrast(200); //Brightness 
  
  showMenu();

}

void loop() {
  unsigned long currentMillis = millis();
  PressMenuButtons();
  Temp1();


//jk maybe i should put this under Temp1 nalang and then call Temp1 in the loop?? so that i can include the command to display the average under Temp1 na din instead of it being a separate thing pa?
  unsigned long currentMillis = millis();
  if(currentMillis - previousMillis == interval){
    Serial.print("Reading #1 - ");
    //Serial.print("  ");
    Temp1();
    previousMillis = currentMillis;
  }
  else if(currentMillis - previousMillis == interval){
    Serial.print("Reading #2 - ");
    //Serial.print("  ");
    Temp1();
    previousMillis = currentMillis;
  }
  else if(currentMillis - previousMillis == interval){
    Serial.print("Reading #3 - ");
    //Serial.print("  ");
    Temp1();
    previousMillis = currentMillis;
  }
  else if(currentMillis - previousMillis == interval){
    Serial.print("Reading #4 - ");
    //Serial.print("  ");
    Temp1();
    previousMillis = currentMillis;
  }
  else if(currentMillis - previousMillis == interval){
    Serial.print("Reading #5 - ");
    //Serial.print("  ");
    Temp1();
    previousMillis = currentMillis;
  }


}


//Pushing Buttons//
//Menu Buttons//
void PressMenuButtons(){
  for (int i=0; i<NUMBUTTONS; i++){
    buttons[i].update(); // [From OP] Update the Bounce instance
    if (buttons[i].fell()){ // [From OP] If it fell
      if (i==2) { // When the SELECT button is pushed aka 3rd button enumerated on the button_pins list
        display.clearDisplay();
        executeChoice(cursor);
      }
      else {
        // [From OP] Erase previous cursor
        display.setCursor(0,cursor);
        display.print(' ');
        if(i==0){ // When the DOWN button is pushed aka 1st button enumerated on the button_pins list
          cursor++;
          if(cursor>(MENU_SIZE+1)) cursor=2; // The MENU SIZE is 4 but the cursor counts starting from 0 so when the cursor is at the 3rd value (aka the last value on the menu), it goes back to 0 aka the first item on the menu AMEN
        }
        else{ //When the UP button is pushed aka the only option left
          cursor--;
          if(cursor<2) cursor=(MENU_SIZE+1); // Same as the last if explanation but in the opposite direction
        }
        // [From OP] Show cursor at new line
        display.setCursor(0,cursor);
        display.print('>');
      }
    } // [From OP] End if button fell...
  } // [From OP] End for-loop of button check
}

//Data Buttons//
void PressDataMenuButtons(){
  for (int i=0;i<NUMBUTTONS;i++){
    buttons[i].update(); 
    if (buttons[i].fell()){
      if (i==2){ // Select
        display.clearDisplay();
        executeDataChoice(cursor);
      }
      else {
        display.setCursor(0,cursor);
        display.print(' ');
        if (i==0){ // Down
          cursor++;
          if (cursor>(DATA_SIZE+1)) cursor=2;
        }
        else { // Up
          cursor--;
          if (cursor<2) cursor=(DATA_SIZE+1);
        }
        display.setCursor(0,cursor);
        display.print('>');
      }
    }
  }
}

//All Data Buttons//
void PressAllDataButtons1(){
  for (int i=0;i<NUMBUTTONS;i++){
    buttons[i].update();
    if (buttons[i].fell()){
      if (i==2){ //Select
        display.setCursor(1,0);
        display.clearDisplay();
        showAllDataMenu2();
        cursor=6;

        while(i==2){
          PressAllDataButtons2();
        }
      }
    }
  }
}

void PressAllDataButtons2(){
  for (int i=0;i<NUMBUTTONS;i++){
    buttons[i].update();
    if (buttons[i].fell()){
      if (i==2){ //Select
        display.setCursor(1,0);
        display.clearDisplay();
        if (cursor==6){
          executeDataChoice(5);
        }
        else{
          executeDataChoice(cursor-1);
        }
      }
      else{
        display.setCursor(0,cursor);
        display.print(' ');
        if (i==0){ //Down
          cursor++;
          if(cursor>7) cursor=6;
        }
        else{ //Up
          cursor--;
          if(cursor<6) cursor=7;
        }
        display.setCursor(0,cursor);
        display.print('>');
      }
    }
  }
}

//Settings Buttons//
void PressSettingsMenuButtons(){
  for (int i=0;i<NUMBUTTONS;i++){
    buttons[i].update();
    if (buttons[i].fell()){
      if (i==2){ // Select
        display.clearDisplay();
        executeSettingsChoice(cursor);
      }
      else{
        display.setCursor(0,cursor);
        display.print(' ');
        if (i==0){ // Down
          cursor++;
          if (cursor>(SETTINGS_SIZE+1)) cursor=2;
        }
        else {
          cursor--;
          if (cursor<2) cursor=(SETTINGS_SIZE+1);
        }
        display.setCursor(0,cursor);
        display.print('>');
      }
    }
  }
}

//Brightness Menu Buttons//
void PressBrightnessMenuButtons(){
  for (int i=0; i<NUMBUTTONS; i++){
    buttons[i].update(); // [From OP] Update the Bounce instance
    if (buttons[i].fell()){ // [From OP] If it fell
      if (i==2) { // When the SELECT button is pushed aka 3rd button enumerated on the button_pins list
        display.clearDisplay();
        executeBrightnessMenuChoice(cursor);
      }
      else {
        // [From OP] Erase previous cursor
        display.setCursor(0,cursor);
        display.print(' ');
        if(i==0){ // When the DOWN button is pushed aka 1st button enumerated on the button_pins list
          cursor++;
          if(cursor>4) cursor=3; 
        }
        else{ //When the UP button is pushed aka the only option left
          cursor--;
          if(cursor<3) cursor=4; 
        }
        // [From OP] Show cursor at new line
        display.setCursor(0,cursor);
        display.print('>');
      }
    } // [From OP] End if button fell...
  } // [From OP] End for-loop of button check
}

//Brightness Buttons//
void PressBrightnessButtons(){
  for (int i=0;i<NUMBUTTONS;i++){
    buttons[i].update();
    if (buttons[i].fell()){
      if (i==2){ // Select
        display.setCursor(0,cursor);
        if (cursor==3) {
          display.setCursor(j*3,3);
          j++;
          if (j>4) j=0;
          executeBrightnessChoice(j);

        }
        else executeBrightnessMenuChoice(cursor);
      }
      else {
        // [From OP] Erase previous cursor
        display.setCursor(0,cursor);
        display.print(' ');
        if(i==0){ // When the DOWN button is pushed aka 1st button enumerated on the button_pins list
          cursor++;
          if(cursor>4) cursor=3; 
        }
        else{ //When the UP button is pushed aka the only option left
          cursor--;
          if(cursor<3) cursor=4; 
        }
        // [From OP] Show cursor at new line
        display.setCursor(0,cursor);
        display.print('>');
      }
    }
  }
}
//Calibration Main Buttons//
void PressCalibrationMainMenuButtons(){
  for (int i=0;i<NUMBUTTONS;i++){
    buttons[i].update();
    if (buttons[i].fell()){
      if (i==2) { //Select
        display.clearDisplay();
        executeCalibrationMainMenuChoice(cursor);
      }
      else{
        display.setCursor(0,cursor);
        //cursor=2;
        display.print(' ');
        if(i==0){ //Down
          cursor++;
          if(cursor>4) cursor=2;
        }
        else{ //Up
          cursor--;
          if(cursor<2) cursor=4;
        }
        display.setCursor(0,cursor);
        display.print('>');
      }
    }
  }
}

//Calibration Status Buttons//
void PressCalibrationStatusButtons1(){
  for (int i=0;i<NUMBUTTONS;i++){
    buttons[i].update();
    if (buttons[i].fell()){
      if (i==2){ //Select
        display.setCursor(1,0);
        display.clearDisplay();
        showCalibrationStatus2();
        cursor=6;

        while(i==2){
          PressCalibrationStatusButtons2();
        }
      }
    }
  }
}

void PressCalibrationStatusButtons2(){
  for (int i=0;i<NUMBUTTONS;i++){
    buttons[i].update();
    if (buttons[i].fell()){
      if (i==2){ //Select
        display.setCursor(1,0);
        display.clearDisplay();
        if (cursor==6){
          executeCalibrationMainMenuChoice(2);
        }
        else{
          executeDataChoice(cursor-1);
        }
      }
      else{
        display.setCursor(0,cursor);
        display.print(' ');
        if (i==0){ //Down
          cursor++;
          if(cursor>7) cursor=6;
        }
        else{ //Up
          cursor--;
          if(cursor<6) cursor=7;
        }
        display.setCursor(0,cursor);
        display.print('>');
      }
    }
  }
}

//Calibration Buttons// 
void PressCalibrationMenuButtons1(){
  for (int i=0;i<NUMBUTTONS;i++){
    buttons[i].update();
    if (buttons[i].fell()){
      if (i==2){ //Select
        executeCalibrationChoice(cursor);
      }
      else{
        display.setCursor(0,cursor);
        display.print(' ');
        if (i==0){ //Down
          cursor++;
          if(cursor>7) cursor=2;
        }
        else{ 
          cursor--;
          if(cursor<2) cursor=7;
        }
        display.setCursor(0,cursor);
        display.print('>');
      }
    }
  }
}

void PressCalibrationMenuButtons2(){
  for (int i=0;i<NUMBUTTONS;i++){
    buttons[i].update();
    if (buttons[i].fell()){
      if (i==2){ //Select
        executeCalibrationChoice(cursor+6);
      }
      else{
        display.setCursor(0,cursor);
        display.print(' ');
        if(i==0){ //Down
          cursor++;
          if(cursor>7) cursor=2;
        }
        else{ //Up
          cursor--;
          if(cursor<2) cursor=7;
        }
        display.setCursor(0,cursor);
        display.print('>');
      }
    }
  }
}


//Offset Buttons//
void PressOffsetButtons1(){
  for (int i=0;i<NUMBUTTONS;i++){
    buttons[i].update();
    if (buttons[i].fell()){
      if (i==2){ //Select
        display.setCursor(0,cursor); //

        while(i==2){
          PressCalibrationMenuButtons1();
        }
      }
      else{
        display.setCursor(0,cursor);
        display.print(' ');
        display.drawString(11,cursor,"   ");
        display.setCursor(11,cursor);
        if(i==0){ //Down
          offset_values_menu[cursor-2]--;
          display.setCursor(11,cursor);
          display.print(offset_values_menu[cursor-2]);

        }
        else{ //Up
          offset_values_menu[cursor-2]++;
          display.setCursor(11,cursor);
          display.print(offset_values_menu[cursor-2]);
        }
        display.setCursor(0,cursor);
        display.print('>');
      }
    }
  }
}

void PressOffsetButtons2(){
  for (int i=0;i<NUMBUTTONS;i++){
    buttons[i].update();
    if (buttons[i].fell()){
      if (i==2){ //Select
        display.setCursor(0,cursor); //

        while(i==2){
          PressCalibrationMenuButtons2();
        }
      }
      else{
        display.setCursor(0,cursor);
        display.print(' ');
        display.drawString(11,cursor,"   ");
        display.setCursor(11,cursor);
        if(i==0){ //Down
          offset_values_menu[cursor+4]--;
          display.setCursor(11,cursor);
          display.print(offset_values_menu[cursor+4]);

        }
        else{ //Up
          offset_values_menu[cursor+4]++;
          display.setCursor(11,cursor);
          display.print(offset_values_menu[cursor+4]);
        }
        display.setCursor(0,cursor);
        display.print('>');
      }
    }
  }
}

//Sleep Buttons//
void PressSleepButtons(){
  for (int i=0;i<NUMBUTTONS;i++){
    buttons[i].update();
    if (buttons[i].fell()){
      display.setPowerSave(0);
      display.clearDisplay();
        display.setCursor(1,0);
        showMenu();

        while(i<NUMBUTTONS){
          PressMenuButtons();
        }
    }
  }
}

//Back to Data Menu Buttons//
void BackToDataMenuButtons(){
  for (int i=0;i<NUMBUTTONS;i++){
    buttons[i].update(); 
    if (buttons[i].fell()){
      if (i==2){ // Select
        display.clearDisplay();
        display.setCursor(1,0);
        showDataMenu();

        while(i==2){
          PressDataMenuButtons();
        }
      }
    }
  }
}

//Display menu//
//Main menu//
void showMenu(){
  cursor=(0);
  display.clearDisplay();
  display.setFont(u8x8_font_amstrad_cpc_extended_f); //Font for titles
  display.println("* IAQ Seestem *");
  for(int i=0;i<15;i++){
    display.drawTile(i,1,1,plainhorizontaltiles);
  }
  display.setFont(u8x8_font_chroma48medium8_r); // Works but idk if i like it lol.. nvm its cute
  cursor=(0,2);
  // [From OP] Show menu items
  for(int i=0;i<MENU_SIZE;i++){
    display.drawString(2,i+2,menu[i]);
  }
  display.setCursor(0,2);
  display.print('>');
}

//Data menu//
void showDataMenu(){
  cursor=(0);
  display.clearDisplay();
  display.setFont(u8x8_font_amstrad_cpc_extended_f);
  display.println("  Data Menu");
  for(int i=0;i<15;i++){
    display.drawTile(i,1,1,plainhorizontaltiles);
  }
  display.setFont(u8x8_font_chroma48medium8_r); // Works but idk if i like it lol.. nvm its cute
  cursor=(0,2);
  //Show menu items
  for(int i=0;i<DATA_SIZE;i++){
    display.drawString(2,i+2,data_menu[i]);
  }
  display.setCursor(0,2);
  display.print('>');
}

//All data menu//
void showAllDataMenu1(){
  cursor=(0);
  display.clearDisplay();
  display.setFont(u8x8_font_amstrad_cpc_extended_f);
  display.println("      Data");
  for(int i=0;i<15;i++){
    display.drawTile(i,1,1,plainhorizontaltiles);
  }
  display.setFont(u8x8_font_chroma48medium8_r); // Works but idk if i like it lol.. nvm its cute
  cursor=(0,2);
  for(int i=0;i<6;i++){
    display.drawString(1,i+2,calibration_menu[i]);
  }
  display.setCursor(0,7);
  display.print('>');
}

void showAllDataMenu2(){
  cursor=(0);
  display.clearDisplay();
  display.setFont(u8x8_font_amstrad_cpc_extended_f);
  display.println("     Data");
  for(int i=0;i<15;i++){
    display.drawTile(i,1,1,plainhorizontaltiles);
  }
  display.setFont(u8x8_font_chroma48medium8_r); // Works but idk if i like it lol.. nvm its cute
  cursor=(0,2);
  for(int i=6;i<CALIBRATION_SIZE;i++){
    display.drawString(1,i-4,calibration_menu[i]);
  }
  display.setCursor(0,6);
  display.print('>');
}

//Settings menu//
void showSettingsMenu(){
  cursor=(0);
  display.clearDisplay();
  display.setFont(u8x8_font_amstrad_cpc_extended_f);
  display.println("   Settings");
  for(int i=0;i<15;i++){
    display.drawTile(i,1,1,plainhorizontaltiles);
  }
  display.setFont(u8x8_font_chroma48medium8_r); // Works but idk if i like it lol.. nvm its cute
  cursor=(0,2);
  for (int i=0;i<SETTINGS_SIZE;i++){
    display.drawString(2,i+2,settings_menu[i]);
  }
  display.setCursor(0,2);
  display.print('>');
}

//Calibration main menu//
void showCalibrationMainMenu(){
  cursor=(0);
  display.clearDisplay();
  display.setFont(u8x8_font_amstrad_cpc_extended_f);
  display.println(" Calibration");
  for(int i=0;i<15;i++){
    display.drawTile(i,1,1,plainhorizontaltiles);
  }
  display.setFont(u8x8_font_chroma48medium8_r); // Works but idk if i like it lol.. nvm its cute
  cursor=(0,2);
  display.drawString(2,2,"VIEW STATUS");
  cursor=(0,3);
  display.drawString(2,3,"INPUT OFFSET");
  cursor=(0,4);
  display.drawString(2,4,data_menu[4]);
  cursor=2;
  display.setCursor(0,cursor);
  display.print('>');
}

//Calibration status//
void showCalibrationStatus1(){
  cursor=(0);
  display.clearDisplay();
  display.setFont(u8x8_font_amstrad_cpc_extended_f);
  display.println("     Status");
  for(int i=0;i<15;i++){
    display.drawTile(i,1,1,plainhorizontaltiles);
  }
  display.setFont(u8x8_font_chroma48medium8_r); // Works but idk if i like it lol.. nvm its cute
  cursor=(0,2);
  for(int i=0;i<6;i++){
    display.drawString(1,i+2,calibration_menu[i]);
  }
  display.setCursor(0,7);
  display.print('>');
}

void showCalibrationStatus2(){
  cursor=(0);
  display.clearDisplay();
  display.setFont(u8x8_font_amstrad_cpc_extended_f);
  display.println("    Status");
  for(int i=0;i<15;i++){
    display.drawTile(i,1,1,plainhorizontaltiles);
  }
  display.setFont(u8x8_font_chroma48medium8_r); // Works but idk if i like it lol.. nvm its cute
  cursor=(0,2);
  for(int i=6;i<CALIBRATION_SIZE;i++){
    display.drawString(1,i-4,calibration_menu[i]);
  }
  display.setCursor(0,6);
  display.print('>');
}

//Calibration menu// 
void showCalibrationMenu1(){
  cursor=(0);
  display.clearDisplay();
  display.setFont(u8x8_font_amstrad_cpc_extended_f);
  display.println(" Calibration");
  for(int i=0;i<15;i++){
    display.drawTile(i,1,1,plainhorizontaltiles);
  }
  display.setFont(u8x8_font_chroma48medium8_r); // Works but idk if i like it lol.. nvm its cute
  cursor=(0,2);
  for(int i=0;i<6;i++){
    display.drawString(1,i+2,calibration_menu[i]);
  }
  for(int j=0;j<5;j++){
    display.setCursor(11,j+2);
    display.print(offset_values_menu[j]);
  }
  display.setCursor(0,cursor);
  display.print('>');
}

void showCalibrationMenu2(){
  cursor=(0);
  display.clearDisplay();
  display.setFont(u8x8_font_amstrad_cpc_extended_f);
  display.println(" Calibration");
  for(int i=0;i<15;i++){
    display.drawTile(i,1,1,plainhorizontaltiles);
  }
  display.setFont(u8x8_font_chroma48medium8_r); // Works but idk if i like it lol.. nvm its cute
  cursor=(0,2);
  for(int i=6;i<CALIBRATION_SIZE;i++){
    display.drawString(1,i-4,calibration_menu[i]);
  }
  for(int j=6;j<10;j++){
    display.setCursor(11,j-4);
    display.print(offset_values_menu[j]);
  }
  display.setCursor(0,cursor);
  display.print('>');
}

//Brightness menu//
void showBrightnessMenu(){
  cursor=(0);
  display.clearDisplay();
  display.setFont(u8x8_font_amstrad_cpc_extended_f);
  display.println("  Brightness");
  for(int i=0;i<15;i++){
    display.drawTile(i,1,1,plainhorizontaltiles);
  }
  display.setFont(u8x8_font_chroma48medium8_r); // Works but idk if i like it lol.. nvm its cute
  cursor=(2,3);
  BrightnessBar();
  display.drawString(2,4,data_menu[4]);
  display.setCursor(0,3);
  display.print('>');
}

//Brightness Bar//
void BrightnessBar(){
  display.setCursor(1,0);
  for(int i=2;i<14;i++){
    display.drawTile(i,2,1,topline);
  }
  for(int i=0;i<4;i++){
    display.drawTile(2+i*3,3,3,bottomline);
  }
}

//Reset//
void(* resetEverything) (void) = 0;  // [From OP from https://arduinogetstarted.com/faq/how-to-reset-arduino-by-programming] Declare reset fuction at address 0

//Data//
//Temperature 1//
char Temp1(){
  //int Temperature1 = 25; //Input actual sensor reading here ,,, not FR
  int Temperature1 = random(10,36);
  display.setFont(u8x8_font_lucasarts_scumm_subtitle_o_2x2_n);
  display.drawString(2,2,"  ");
  display.setCursor(2,2);
  display.print(Temperature1);
  display.setFont(u8x8_font_chroma48medium8_r);
  display.drawString(6,3,"C");
  return char(Temperature1);

  if(currentMillis - previousMillis == interval){
    Serial.print("Reading #1 - ");
    
    previousMillis = currentMillis;
  }
  else if(currentMillis - previousMillis == interval){
    Serial.print("Reading #2 - ");
    //Serial.print("  ");
    Temp1();
    previousMillis = currentMillis;
  }
  else if(currentMillis - previousMillis == interval){
    Serial.print("Reading #3 - ");
    //Serial.print("  ");
    Temp1();
    previousMillis = currentMillis;
  }
  else if(currentMillis - previousMillis == interval){
    Serial.print("Reading #4 - ");
    //Serial.print("  ");
    Temp1();
    previousMillis = currentMillis;
  }
  else if(currentMillis - previousMillis == interval){
    Serial.print("Reading #5 - ");
    //Serial.print("  ");
    Temp1();
    previousMillis = currentMillis;
  }
}

//Humidity 1//
char Hum1(){
  int Humidity1 = 65; //Input actual sensor reading here ,,, not FR
  display.setFont(u8x8_font_lucasarts_scumm_subtitle_o_2x2_n);
  display.drawString(2,5,"  ");
  display.setCursor(2,5);
  display.print(Humidity1);
  display.setFont(u8x8_font_chroma48medium8_r);
  display.drawString(6,6,"%");
  return char(Humidity1);
}

//Temperature 2//
char Temp2(){
  int Temperature2 = 25; //Input actual sensor reading here ,,, not FR
  display.setFont(u8x8_font_lucasarts_scumm_subtitle_o_2x2_n);
  display.drawString(9,2,"  ");
  display.setCursor(9,2);
  display.print(Temperature2);
  display.setFont(u8x8_font_chroma48medium8_r);
  display.drawString(13,3,"C");
  return char(Temperature2);
}

//Humidity 2//
char Hum2(){
  int Humidity2 = 65; //Input actual sensor reading here ,,, not FR
  display.setFont(u8x8_font_lucasarts_scumm_subtitle_o_2x2_n);
  display.drawString(9,5,"  ");
  display.setCursor(9,5);
  display.print(Humidity2);
  display.setFont(u8x8_font_chroma48medium8_r);
  display.drawString(13,6,"%");
  return char(Humidity2);
}

//Particulate Matter//
//PM10//
char PM10(){
  int PM_10 = 100; //Input actual sensor reading here ,,, not FR
  display.setFont(u8x8_font_lucasarts_scumm_subtitle_o_2x2_n);
  display.drawString(9,1,"   ");
  display.setCursor(9,1);
  display.print(PM_10);
  return char(PM_10);
}

//PM2.5//
char PM2_5(){
  int PM_2_5 = 102; //Input actual sensor reading here ,,, not FR
  display.setFont(u8x8_font_lucasarts_scumm_subtitle_o_2x2_n);
  display.drawString(1,2,"   ");
  display.setCursor(1,2);
  display.print(PM_2_5);
  display.setFont(u8x8_font_chroma48medium8_r);
  display.drawString(4,4,"ppm");
  return char(PM_2_5);
}

//PM1.0//
char PM1_0(){
  int PM_1_0 = 105; //Input actual sensor reading here ,,, not FR
  display.setFont(u8x8_font_lucasarts_scumm_subtitle_o_2x2_n);
  display.drawString(9,4,"   ");
  display.setCursor(9,4);
  display.print(PM_1_0);
  return char(PM_1_0);
}

//CO2//
char CO2(){
  int CO_2 = 250; //Input actual sensor reading here ,,, not FR
  display.setFont(u8x8_font_lucasarts_scumm_subtitle_o_2x2_n);
  display.drawString(6,1,"   ");
  display.setCursor(6,1);
  display.print(CO_2);
  display.setFont(u8x8_font_chroma48medium8_r);
  display.drawString(12,2,"ppm");
  return char(CO_2);
}

//TVOC//
char TVOC(){
  float totalVOC = 0.2; //Input actual sensor reading here ,,, not FR
  display.setFont(u8x8_font_lucasarts_scumm_subtitle_o_2x2_n);
  display.drawString(4,5,"    ");
  display.setCursor(4,5);
  display.print(totalVOC);
  display.setFont(u8x8_font_chroma48medium8_r);
  display.drawString(12,6,"ppb");
  return char(totalVOC);
}


//Execute tasks on OLED//
void executeChoice(int choice){
  switch(choice){
      case 2 : //Data
              display.clearDisplay();
              display.setCursor(1,0);
              showDataMenu();

              while(choice==2){
                PressDataMenuButtons();
              }
              break;
      case 3 : //Settings
              display.clearDisplay();
              display.setCursor(1,0);
              showSettingsMenu();

              while(choice==3){
                PressSettingsMenuButtons();
              }
              break;
      case 4 : //Calibrate 
              display.clearDisplay();
              display.setCursor(1,0);
              showCalibrationMainMenu();

              while(choice==4){
                PressCalibrationMainMenuButtons();
              }
              break;
      case 5 : //Sleep
              display.setPowerSave(1);

              while(choice==5){
                PressSleepButtons();
              }
              break;
  }
}

void executeDataChoice(int datachoice) {
  switch(datachoice){
      case 2 : //Temp&Hum
              display.clearDisplay();
              display.setCursor(0,0);
              display.drawString(1,0,"INSIDE OUTSIDE");
              for(int i=0;i<7;i++){
                display.drawTile(7,i,1,verticaltiles);
              }
              //Topline
              for(int i=0;i<7;i++){
                display.drawTile(i,1,1,plainhorizontaltiles);
              }
              display.drawTile(7,1,1,perpendiculartiles);
              for(int i=8;i<15;i++){
                display.drawTile(i,1,1,plainhorizontaltiles);
              }

              //Divider
              for(int i=0;i<7;i++){
                display.drawTile(i,4,1,plainhorizontaltiles);
              }
              display.drawTile(7,4,1,perpendiculartiles);
              for(int i=8;i<15;i++){
                display.drawTile(i,4,1,plainhorizontaltiles);
              }

              // Put actual text here
              //Inside
              Temp1();
              Hum1();
              
              //Outside
              Temp2();
              Hum2();



              cursor=(1,7);
              display.drawString(3,7,data_menu[4]);
              display.setCursor(1,7);
              display.print('>');

              while(datachoice==2){
                BackToDataMenuButtons();
              }
              break;
      case 3 : //PM10,2.5,&1.0
              display.clearDisplay();
              display.setCursor(1,0);
              display.drawTile(0,0,1,plainhorizontaltiles);
              display.drawString(1,0,"PM2.5");
              display.drawTile(6,0,1,plainhorizontaltiles);
              for(int i=0;i<6;i++){
                display.drawTile(7,i,1,verticaltiles);
              }
              display.drawTile(7,0,1,perpendiculartiles);
              display.drawTile(8,0,1,plainhorizontaltiles);
              display.drawString(9,0,"PM10");
              display.drawTile(13,0,1,plainhorizontaltiles);
              display.drawTile(14,0,1,plainhorizontaltiles);
              display.drawTile(7,3,1,halfperpendiculartiles);
              display.drawTile(8,3,1,plainhorizontaltiles);
              display.drawString(9,3,"PM1.0");
              display.drawTile(14,3,1,plainhorizontaltiles);
              
              for(int i=0;i<7;i++){
                display.drawTile(i,6,1,plainhorizontaltiles);
              }
              display.drawTile(7,6,1,perpendiculartiles);
              for(int i=8;i<15;i++){
                display.drawTile(i,6,1,plainhorizontaltiles);
              }

              PM10();
              PM1_0();
              PM2_5();
              
              // Put actual text here

              cursor=(1,7);
              display.drawString(3,7,data_menu[4]);
              display.setCursor(1,7);
              display.print('>');

              while(datachoice==3){
                BackToDataMenuButtons();
              }
              break;
      case 4 : //CO2 & TVOC 
              display.clearDisplay();
              display.setCursor(1,0);
              /*
              for(int i=0;i<7;i++){
                display.drawTile(7,i,1,verticaltiles);
              }
              */
              for(int i=0;i<15;i++){
                display.drawTile(i,3,1,plainhorizontaltiles);
              }
              display.drawString(1,0,"CO2");
              display.drawString(1,4,"TVOC");

              CO2();
              TVOC();


              // Put actual text here

              cursor=(1,7);
              display.drawString(3,7,data_menu[4]);
              display.setCursor(1,7);
              display.print('>');

              while(datachoice==4){
                BackToDataMenuButtons();
              }
              break;
      case 5 : //ALL //Not FR (fucked up by the calibration)
              display.clearDisplay();
              display.setCursor(0,0);
              showAllDataMenu1();
              
              while(datachoice==5){
                PressAllDataButtons1();
              }

              break;
      case 6 : //Back to Menu
              display.clearDisplay();
              display.setCursor(1,0);
              showMenu();

              while(datachoice==6){
                PressMenuButtons();
              }
              break;
  }
}

void executeSettingsChoice(int settingschoice) {
  switch(settingschoice){
      case 2 : //Parameters
              display.clearDisplay();
              display.setCursor(0,3);
              display.print("_____|_____");
              display.setCursor(5,0);
              display.print("|");

              while(settingschoice==2){
                PressMenuButtons();
              }
              break;
      case 3 : //Wi-Fi
              display.clearDisplay();
              display.setCursor(1,0);
              showSettingsMenu();

              while(settingschoice==3){
                PressSettingsMenuButtons();
              }
              break;
      case 4 : //Brightness
              display.clearDisplay();
              display.setCursor(1,0);
              showBrightnessMenu();

              while(settingschoice==4){
                PressBrightnessMenuButtons();
              }
              break;
      case 5 : //Reset
              resetEverything();
              break;
      case 6 : //Back to Menu
              display.clearDisplay();
              display.setCursor(1,0);
              showMenu();

              while(settingschoice==6){
                PressMenuButtons();
              }
              break;
  }
}

void executeCalibrationMainMenuChoice(int cmainmenuchoice) {
  switch(cmainmenuchoice){
    case 2 : //Calibration Status
            display.clearDisplay();
            display.setCursor(1,0);
            showCalibrationStatus1();

            while(cmainmenuchoice==2){
              PressCalibrationStatusButtons1();
            }
    case 3 : //Manual Entry Calibration
            display.clearDisplay();
            display.setCursor(1,0);
            showCalibrationMenu1();

            while(cmainmenuchoice==3){
              PressCalibrationMenuButtons1();
            }
    case 4 : //Back to Main Menu
            display.clearDisplay();
            display.setCursor(1,0);
            showMenu();

            while(cmainmenuchoice==4){
              PressMenuButtons();
            }
  }
}

void executeCalibrationChoice(int calibrationchoice) {
  switch(calibrationchoice){
      case 2 : //TempIn
              display.setCursor(1,0);
              display.setCursor(0,calibrationchoice);
              display.print('>');
              display.setCursor(0,calibrationchoice); //

              while(calibrationchoice==2){
                PressOffsetButtons1();
              }
              break;
      case 3 : //TempOut
              display.setCursor(1,0);
              display.setCursor(0,calibrationchoice);
              display.print('>');
              display.setCursor(0,calibrationchoice);

              while(calibrationchoice==3){
                PressOffsetButtons1();
              }
              break;
      case 4 : //HumIn
              display.setCursor(1,0);
              display.setCursor(0,calibrationchoice);
              display.print('>');
              display.setCursor(0,calibrationchoice);

              while(calibrationchoice==4){
                PressOffsetButtons1();
              }
              break;
      case 5 : //HumOut
              display.setCursor(1,0);
              display.setCursor(0,calibrationchoice);
              display.print('>');
              display.setCursor(0,calibrationchoice);

              while(calibrationchoice==5){
                PressOffsetButtons1();
              }
              break;
      case 6 : //PM10
              display.setCursor(1,0);
              display.setCursor(0,calibrationchoice);
              display.print('>');
              display.setCursor(0,calibrationchoice);

              while(calibrationchoice==6){
                PressOffsetButtons1();
              }
              break;
      case 7 : //Next Page
              display.clearDisplay();
              display.setCursor(1,0);
              showCalibrationMenu2();

              while(calibrationchoice==7){
                PressCalibrationMenuButtons2();
              }
              break;
      case 8 : //PM2.5
              display.setCursor(1,0);
              display.setCursor(0,calibrationchoice);
              display.print('>');
              display.setCursor(0,calibrationchoice);

              while(calibrationchoice==8){
                PressOffsetButtons2();
              }
              break;
      case 9 : //PM1.0
              display.setCursor(1,0);
              display.setCursor(0,calibrationchoice);
              display.print('>');
              display.setCursor(0,calibrationchoice);

              while(calibrationchoice==9){
                PressOffsetButtons2();
              }
              break;
      case 10 : //CO2
              display.setCursor(1,0);
              display.setCursor(0,calibrationchoice);
              display.print('>');
              display.setCursor(0,calibrationchoice);

              while(calibrationchoice==10){
                PressOffsetButtons2();
              }
              break;
      case 11 : //TVOC
              display.setCursor(1,0);
              display.setCursor(0,calibrationchoice);
              display.print('>');
              display.setCursor(0,calibrationchoice);

              while(calibrationchoice==11){
                PressOffsetButtons2();
              }
              break;
      case 12 : //Previous Page
              display.clearDisplay();
              display.setCursor(1,0);
              showCalibrationMenu1();

              while(calibrationchoice==12){
                PressCalibrationMenuButtons1();
              }
              break;
      case 13 : //Back to Menu 
              display.clearDisplay();
              display.setCursor(1,0);
              showMenu();

              while(calibrationchoice==13){
                PressMenuButtons();
              }
              break;
  }
}

void executeBrightnessMenuChoice(int brightnessmenuchoice) {
  switch(brightnessmenuchoice){
      case 3 : //Brightness Box
              display.setCursor(1,0);
              showBrightnessMenu();

              while(brightnessmenuchoice==3){
                PressBrightnessButtons();

              }
              break;
      case 4 : //Back to Menu
              display.clearDisplay();
              display.setCursor(1,0);
              showMenu();

              while(brightnessmenuchoice==4){
                PressMenuButtons();
              }
              break;
  }
}

void executeBrightnessChoice(int brightnesschoice) {
  switch(brightnesschoice){
      case 0 : // Brightness level 5 aka lowest
              display.clearLine(3);
              display.setCursor(0,3);
              BrightnessBar();
              display.setContrast(5);

              while(brightnesschoice==0){
                PressBrightnessButtons();
              }
              break;
      case 1 : // Brightness level 54
              display.clearLine(3);
              BrightnessBar();
              display.setCursor(3,3);
              for (int i=2;i<5;i++){
                display.drawTile(i,3,1,fullbox);
              }
              display.setContrast(54);

              while(brightnesschoice==1){
                PressBrightnessButtons();
              }
              break;
      case 2 : // Brightness level 102
              display.clearLine(3);
              BrightnessBar();
              display.setCursor(6,3);
              for (int i=2;i<8;i++){
                display.drawTile(i,3,1,fullbox);
              }
              display.setContrast(102);

              while(brightnesschoice==2){
                PressBrightnessButtons();
              }
              break;
      case 3 : // Brightness level 151
              display.clearLine(3);
              BrightnessBar();
              display.setCursor(9,3);
              for (int i=2;i<11;i++){
                display.drawTile(i,3,1,fullbox);
              }
              display.setContrast(151);

              while(brightnesschoice==3){
                PressBrightnessButtons();
              }
              break;
      case 4 : // Brightness level 200 aka highest
              display.clearLine(3);
              BrightnessBar();
              display.setCursor(12,3);
              for (int i=2;i<14;i++){
                display.drawTile(i,3,1,fullbox);
              }
              display.setContrast(200);

              while(brightnesschoice==4){
                PressBrightnessButtons();
              }
              break;
  }
}