/* This program displays the Character Speed WPM on line 1 and Character Clock Timing on line 2 of  a 16 x 2 
LCD display based on a HD44780 display controller. WA7RSO  
Modified for Analog Input & Display of the Voltage on LCD LLine 3
08/13/2013
*/
#include <LiquidCrystal.h>  //  alert compiler to include the lcd library

int RS = 8;            // Register Select on pin #4 of the LCD
int RW = 9;            // Read/Write on pin #5 of the LCD
int E = 10;            // Enable on pin #6 of the LCD

// initialize the library with the numbers of the Arduino pins used
LiquidCrystal lcd(RS, E, 4, 5, 6, 7);    //defines the pins used from the LCD to the Arduino (New Interface Board)


int rawNumber;

String CharSpeed20 = ("Char Speed-20WPM");
String CharClock20 = ("60 ms 16.7Hz Clk");
String InputVoltage;

void setup()                        //required function
{
  // initialize serial communication at 9600 bits per second:
//  Serial.begin(9600);      //see text
  pinMode(RW, OUTPUT);
  digitalWrite(RW, LOW);        // Allow "Writing" to the LCD

  lcd.begin(20,4);              //let the program know the size of the display to be handled

  printspeed();                  // calls the function to print the WPM message
//  printclock();                  // calls the function to print the first 16 characters of the message
}

void loop()                        //  Dummy Loop
{ 
// Read the analog input on pin #0
  int sensorValue = analogRead(A0);
  // Convert the analog reading (which goes from 0 - 1023) to a voltage (0 - 5V):
  float voltage = sensorValue * (5.0 / 1023.0);
// print out the value you read:
//  Serial.println(voltage);
  lcd.setCursor(0,2);
//  InputVoltage = Stringvoltage;
  lcd.print("Voltage: ");
  lcd.print(voltage);
  lcd.print("V");
  Clear4thLine();
    lcd.setCursor(0,3);
    rawNumber = sensorValue;
    lcd.print("Raw Value: ");
    lcd.print(String(sensorValue));
  delay(500);

}

void printspeed()                  // Show the Character Speed in WPM
  {
    lcd.setCursor (0,0);             // Set cursor at beginning of 1st Row ("0")
    lcd.print(CharSpeed20);            // print the WPM Character Speed
    Serial.println(CharSpeed20);
    lcd.setCursor(0,1);               //sets cursor at the bginning of the second line and then moves right
    lcd.print(CharClock20);
    Serial.println(CharClock20);
  }  

void Clear4thLine()
{
    lcd.setCursor(0,3);
    lcd.print("                   ");
}