/* @file CustomKeypad.pde
|| @version 1.0
|| @author Alexander Brevig
|| @contact [email protected]
||
|| @description
|| | Demonstrates changing the keypad size and key values.
|| #
*/
#include <Keypad.h>

#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);

#include <Wire.h>

const byte ROWS = 4; /* four rows */
const byte COLS = 4; /* four columns */
/* define the symbols on the buttons of the keypads */
char hexaKeys[ROWS][COLS] = {
  {'0','1','2','3'},
  {'4','5','6','7'},
  {'8','9','A','B'},
  {'C','D','E','F'}
};
byte rowPins[ROWS] = {10, 11, 12, 13}; /* connect to the row pinouts of the keypad */
byte colPins[COLS] = {A0, A1, A2, A3}; /* connect to the column pinouts of the keypad */

/* initialize an instance of class NewKeypad */
Keypad customKeypad = Keypad( makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS); 

void setup() {
  lcd.init();                      // initialize the lcd 
  lcd.backlight();
  Serial.begin(9600);	/* Define baud rate for serial communication */
}

void loop() {

{
 // when characters arrive over the serial port...
  if (Serial.available()) {
    // wait a bit for the entire message to arrive
    delay(100);
    // clear the screen
    lcd.clear();
    // read all the available characters
    while (Serial.available() > 0) {
      // display each character to the LCD
      lcd.write(Serial.read());
    }
  }
  }


  int adc_val;
  adc_val = analogRead(A1);	/* Read input from keypad */
  if (adc_val>850)
  {
    Serial.print("Key Pressed : ");
    Serial.println("0");
    lcd.setCursor(0,0);
    lcd.print("Key Pressed : ");
    lcd.setCursor(0,1);
    lcd.print("0");
    delay(100);
  }
  else if ( adc_val>450  && adc_val<510)
  {
    Serial.print("Key Pressed : ");
    Serial.println("1");
    lcd.setCursor(0,0);
    lcd.print("Key Pressed : ");
    lcd.setCursor(0,1);
    lcd.print("1");
    delay(100);
  }
  else if ( adc_val>300  && adc_val<350)
  {
    Serial.print("Key Pressed : ");
    Serial.println("2");
    lcd.setCursor(0,0);
    lcd.print("Key Pressed : ");
    lcd.setCursor(0,1);
    lcd.print("2");
    delay(100);
  }
  else if ( adc_val>230  && adc_val<270)
  {
    Serial.print("Key Pressed : ");
    Serial.println("3");
    lcd.setCursor(0,0);
    lcd.print("Key Pressed : ");
    lcd.setCursor(0,1);
    lcd.print("3");
    delay(100);
  }
  else if ( adc_val>160  && adc_val<180)
  {
    Serial.print("Key Pressed : ");
    Serial.println("4");
    lcd.setCursor(0,0);
    lcd.print("Key Pressed : ");
    lcd.setCursor(0,1);
    lcd.print("4");
    delay(100);
  }
  else if ( adc_val>145  && adc_val<155)
  {
    Serial.print("Key Pressed : ");
    Serial.println("5");
    lcd.setCursor(0,0);
    lcd.print("Key Pressed : ");
    lcd.setCursor(0,1);
    lcd.print("5");
    delay(100);
  }
  else if ( adc_val>125  && adc_val<135)
  {
    Serial.print("Key Pressed : ");
    Serial.println("6");
    lcd.setCursor(0,0);
    lcd.print("Key Pressed : ");
    lcd.setCursor(0,1);
    lcd.print("6");
    delay(100);
  }
  else if ( adc_val>105  && adc_val<120)
  {
    Serial.print("Key Pressed : ");
    Serial.println("7");
    lcd.setCursor(0,0);
    lcd.print("Key Pressed : ");
    lcd.setCursor(0,1);
    lcd.print("7");
    delay(100);
  }
  else if ( adc_val>92  && adc_val<99)
  {
    Serial.print("Key Pressed : ");
    Serial.println("8");
    lcd.setCursor(0,0);
    lcd.print("Key Pressed : ");
    lcd.setCursor(0,1);
    lcd.print("8");
    delay(100);
  }
  else if ( adc_val>82  && adc_val<90)
  {
    Serial.print("Key Pressed : ");
    Serial.println("9");
    lcd.setCursor(0,0);
    lcd.print("Key Pressed : ");
    lcd.setCursor(0,1);
    lcd.print("9");
    delay(100);
  }
  else if ( adc_val>77  && adc_val<81)
  {
    Serial.print("Key Pressed : ");
    Serial.println("A");
    lcd.setCursor(0,0);
    lcd.print("Key Pressed : ");
    lcd.setCursor(0,1);
    lcd.print("A");
    delay(100);
  }
  else if ( adc_val>72  && adc_val<76)
  {
    Serial.print("Key Pressed : ");
    Serial.println("B");
    lcd.setCursor(0,0);
    lcd.print("Key Pressed : ");
    lcd.setCursor(0,1);
    lcd.print("B");
    delay(100);
  }
  else if ( adc_val>63  && adc_val<68)
  {
    Serial.print("Key Pressed : ");
    Serial.println("C");
    lcd.setCursor(0,0);
    lcd.print("Key Pressed : ");
    lcd.setCursor(0,1);
    lcd.print("C");
    delay(100);
  }
  else if ( adc_val>60  && adc_val<62)
  {
    Serial.print("Key Pressed : ");
    Serial.println("D");
    lcd.setCursor(0,0);
    lcd.print("Key Pressed : ");
    lcd.setCursor(0,1);
    lcd.print("D");
    delay(100);
  }
  else if ( adc_val>57  && adc_val<59)
  {
    Serial.print("Key Pressed : ");
    Serial.println("E");
    lcd.setCursor(0,0);
    lcd.print("Key Pressed : ");
    lcd.setCursor(0,1);
    lcd.print("#");
    delay(100);
  }
  else if( adc_val>52  && adc_val<56)
  {
    Serial.print("Key Pressed : ");
    Serial.println("F");
    lcd.setCursor(0,0);
    lcd.print("Key Pressed : ");
    lcd.setCursor(0,1);
    lcd.print("*");
    delay(100);
  }
  else
  {
	  
  }
  delay(100);
}