Help With Creating Counter

Hello,

I am needing some help with the code for my 16x2 LCD Keypad Shield. Basically I need to display a counter running in the code. But I am not sure where to declare the counter and how do I get it to add 1 when the UP button is pressed and subtract 1 when the DOWN button is pressed. Here is my code so far:

#include <LiquidCrystal.h>

// select the pins used on the LCD panel
LiquidCrystal lcd(8, 9, 4, 5, 6, 7);

// define some values used by the panel and buttons
int lcd_key = 0;
int adc_key_in = 0;
#define btnUP 1
#define btnDOWN 2
#define btnSELECT 4
#define btnRIGHT 3
#define btnLEFT 5
#define btnNONE 0

// read the buttons
int read_LCD_buttons()
{
adc_key_in = analogRead(0); // read the value from the sensor
// my buttons when read are centered at these values: 0, 144, 329, 504, 741
// we add approx 50 to those values and check to see if we are close
if (adc_key_in > 1000) return btnNONE; // We make this the 1st option for speed reasons since it will be the most likely result
if (adc_key_in < 50) return btnRIGHT;
if (adc_key_in < 250) return btnUP;
if (adc_key_in < 450) return btnDOWN;
if (adc_key_in < 650) return btnLEFT;
if (adc_key_in < 850) return btnSELECT;
}
void setup()
{
lcd.begin(16, 2); // start the library
lcd.setCursor(0,0);
lcd.print(“Select an option”); // print a simple message
}

void loop()
{
lcd.setCursor(9,1); // move cursor to second line “1” and 9 spaces over
lcd.setCursor(0,1); // move to the begining of the second line
lcd_key = read_LCD_buttons(); // read the buttons
int count = 1;
switch (lcd_key) // depending on which button was pushed, we perform an action
{
case btnUP:
{
lcd.print("One more “);
lcd.setCursor(14,2);
lcd.print(count);
delay(1000);
lcd.setCursor(0,2);
lcd.print(” “);
break;
}
case btnDOWN:
{
lcd.print(“One less “);
lcd.setCursor(14,2);
lcd.print(count);
delay(1000);
lcd.setCursor(0,2);
lcd.print(” “);
break;
}
case btnSELECT:
{
lcd.print(“Good choice! “);
delay(1000);
lcd.setCursor(0,2);
lcd.print(” “);
break;
}
case btnRIGHT:
{
lcd.print(””);
lcd.setCursor(0,2);
lcd.print(” “);
break;
}
case btnLEFT:
{
lcd.print(””);
lcd.setCursor(0,2);
lcd.print(” ");
break;
}
}
}

See how nice it looks with code tags …

And look for my 3 additions.

Dont use an INT to store values below 256, use a BYTE as it saves memory

#include <LiquidCrystal.h>

// select the pins used on the LCD panel
LiquidCrystal lcd(8, 9, 4, 5, 6, 7);

// define some values used by the panel and buttons
int myCounter = 0;

int lcd_key     = 0;
int adc_key_in  = 0;
#define btnUP     1
#define btnDOWN   2
#define btnSELECT 4
#define btnRIGHT  3
#define btnLEFT   5
#define btnNONE   0

// read the buttons
int read_LCD_buttons()
{
  adc_key_in = analogRead(0);      // read the value from the sensor 
  // my buttons when read are centered at these values: 0, 144, 329, 504, 741
  // we add approx 50 to those values and check to see if we are close
  if (adc_key_in > 1000) return btnNONE; // We make this the 1st option for speed reasons since it will be the most likely result
  if (adc_key_in < 50)   return btnRIGHT;  
  if (adc_key_in < 250)  return btnUP; 
  if (adc_key_in < 450)  return btnDOWN; 
  if (adc_key_in < 650)  return btnLEFT; 
  if (adc_key_in < 850)  return btnSELECT; 
}
void setup()
{
  lcd.begin(16, 2);              // start the library
  lcd.setCursor(0,0);
  lcd.print("Select an option"); // print a simple message
}

void loop()
{
  lcd.setCursor(9,1);            // move cursor to second line "1" and 9 spaces over
  lcd.setCursor(0,1);            // move to the begining of the second line
  lcd_key = read_LCD_buttons();  // read the buttons
  int count = 1;
  switch (lcd_key)               // depending on which button was pushed, we perform an action
  {
  case btnUP:
    {

     myCounter ++; 

      lcd.print("One more      ");
      lcd.setCursor(14,2);
      lcd.print(count);
      delay(1000);
      lcd.setCursor(0,2);
      lcd.print("            ");
      break;
    }
  case btnDOWN:
    {

     myCounter --;  

      lcd.print("One less    ");
      lcd.setCursor(14,2);
      lcd.print(count);
      delay(1000);
      lcd.setCursor(0,2);
      lcd.print("            ");
      break;
    }
  case btnSELECT:
    {
      lcd.print("Good choice!    ");
      delay(1000);
      lcd.setCursor(0,2);
      lcd.print("            ");
      break;
    }
  case btnRIGHT:
    {
      lcd.print("");
      lcd.setCursor(0,2);
      lcd.print("            ");
      break;
    }
  case btnLEFT:
    {
      lcd.print("");
      lcd.setCursor(0,2);
      lcd.print("            ");
      break;
    }
  }
}

…R