//#include <Wire.h> 
//#include <LiquidCrystal_I2C.h>
#include <LiquidCrystal_I2C.h>

#define BACKLIGHT_PIN     13

//LiquidCrystal_I2C lcd(0x38);  // Set the LCD I2C address
LiquidCrystal_I2C lcd(0x27,20,4); 

//LiquidCrystal_I2C lcd(0x38, BACKLIGHT_PIN, POSITIVE);  // Set the LCD I2C address
char line0[21]; 
char line1[21];
char line2[21]; 
char line3[21];


// Creat a set of new characters
const uint8_t charBitmap[][8] = {
   { 0xc, 0x12, 0x12, 0xc, 0, 0, 0, 0 },
   { 0x6, 0x9, 0x9, 0x6, 0, 0, 0, 0 },
   { 0x0, 0x6, 0x9, 0x9, 0x6, 0, 0, 0x0 },
   { 0x0, 0xc, 0x12, 0x12, 0xc, 0, 0, 0x0 },
   { 0x0, 0x0, 0xc, 0x12, 0x12, 0xc, 0, 0x0 },
   { 0x0, 0x0, 0x6, 0x9, 0x9, 0x6, 0, 0x0 },
   { 0x0, 0x0, 0x0, 0x6, 0x9, 0x9, 0x6, 0x0 },
   { 0x0, 0x0, 0x0, 0xc, 0x12, 0x12, 0xc, 0x0 }
   
};

void setup()
{
   int charBitmapSize = (sizeof(charBitmap ) / sizeof (charBitmap[0]));

  // Switch on the backlight
  pinMode ( BACKLIGHT_PIN, OUTPUT );
  digitalWrite ( BACKLIGHT_PIN, HIGH );
    lcd.init();                      // initialize the lcd
  // Print a message to the LCD.
  lcd.backlight();
  lcd.setCursor(3,0);
  lcd.print("SumpPump Monitor");
  lcd.setCursor(2,1);
  lcd.print("Version 1.0");
   lcd.setCursor(0,2);
  lcd.print("PrimaryPump:");
   lcd.setCursor(2,3);
  lcd.print("BackupPump:");
    delay(2000); 
 }

  /*
  lcd.begin(16,2);               // initialize the lcd 

   for ( int i = 0; i < charBitmapSize; i++ )
   {
      lcd.createChar ( i, (uint8_t *)charBitmap[i] );
   }

  lcd.home ();                   // go home
  lcd.print("Hello, ARDUINO ");  
  lcd.setCursor ( 0, 1 );        // go to the next line
  lcd.print (" FORUM - fm   ");
  delay ( 1000 );


}
*/

void loop()
{

line0[4] = 8; 
line0[5] = 5; 
line0[6] = "C";
updateDisplay();

/*
// Buffer for float
char float_str[8];
char line0[21];
float temperature = 15.12;
dtostrf(temperature,4,2,float_str);

*/
// Now you can sprintf
//sprintf(line0, "Temp: %-7sC", float_str); // %6s right pads the string

/*
float vinMtr = (analogRead(A0) * (5.0 / 1023.0));   // * 9.99;
  lcd.clear();
  lcd.print("Battery Volts:");
  lcd.setCursor(0,1); 
  lcd.print(vinMtr);
  delay(2000); 


  */

   /*
   lcd.home ();
   // Do a little animation by writing to the same location
   for ( int i = 0; i < 2; i++ )
   {
      for ( int j = 0; j < 16; j++ )
      {
         lcd.print (char(random(7)));
      }
      lcd.setCursor ( 0, 1 );
   }
   delay (200);
   */

}

void updateDisplay() {
   lcd.setCursor(0,0);
   lcd.print(line0);
   lcd.print(line1);
   lcd.print(line2);
   lcd.print(line3);
delay(2000);
}