Touchy Program - How do I fix?

Forum 2005-2010 (read only) Hardware Bugs & Suggestions
8

Here is the program rewritten and modified with interrupts. The first button (interrupt 0) counts how many times it is pressed, and stores that to the variable countPress. Then when the second button (interrupt 1) is pressed, it should display the correct number of presses on the first button. The buttons do not have to be pressed at the same time at all.

int countPress = 0;

//7 Segment Display Pins
int segF = 4;
int segG = 5;
int segE = 6;
int segD = 7;
int segA = 8;
int segB = 9;
int segC = 10;

//Button Pins
int button = 2;
int button2 = 3;

void setup()
  {
    Serial.begin(9600);
    attachInterrupt(0, count, RISING);
    attachInterrupt(1, disp, RISING);
    pinMode(segA, OUTPUT);
    pinMode(segB, OUTPUT);
    pinMode(segC, OUTPUT);
    pinMode(segD, OUTPUT);
    pinMode(segE, OUTPUT);
    pinMode(segF, OUTPUT);
    pinMode(segG, OUTPUT);
    
  }

void loop()
  {
    
  }

void count()
  {
    countPress = ++countPress;
  }

void disp()
  {
    switch (countPress)
    {
  case 1:
    //Turns on and off the LEDs on the 7seg to display "1"
    digitalWrite(segA, LOW);
    digitalWrite(segB, HIGH);
    digitalWrite(segC, HIGH);
    digitalWrite(segD, LOW);
    digitalWrite(segE, LOW);
    digitalWrite(segF, LOW);
    digitalWrite(segG, LOW);
    break;
  case 2:
    /*Same as 1, but this displays "2", and so on for the
    rest of these*/
    digitalWrite(segA, HIGH);
    digitalWrite(segB, HIGH);
    digitalWrite(segC, LOW);
    digitalWrite(segD, HIGH);
    digitalWrite(segE, HIGH);
    digitalWrite(segF, LOW);
    digitalWrite(segG, HIGH);
    break;
  case 3:
    digitalWrite(segA, HIGH);
    digitalWrite(segB, HIGH);
    digitalWrite(segC, HIGH);
    digitalWrite(segD, HIGH);
    digitalWrite(segE, LOW);
    digitalWrite(segF, LOW);
    digitalWrite(segG, HIGH);
    break;
  case 4:
    digitalWrite(segA, LOW);
    digitalWrite(segB, HIGH);
    digitalWrite(segC, HIGH);
    digitalWrite(segD, LOW);
    digitalWrite(segE, LOW);
    digitalWrite(segF, HIGH);
    digitalWrite(segG, HIGH);
    break;
  case 5:
    digitalWrite(segA, HIGH);
    digitalWrite(segB, LOW);
    digitalWrite(segC, HIGH);
    digitalWrite(segD, HIGH);
    digitalWrite(segE, LOW);
    digitalWrite(segF, HIGH);
    digitalWrite(segG, HIGH);
    break;
  case 6:
    digitalWrite(segA, HIGH);
    digitalWrite(segB, LOW);
    digitalWrite(segC, HIGH);
    digitalWrite(segD, HIGH);
    digitalWrite(segE, HIGH);
    digitalWrite(segF, HIGH);
    digitalWrite(segG, HIGH);
    break;
  case 7:
    digitalWrite(segA, HIGH);
    digitalWrite(segB, HIGH);
    digitalWrite(segC, HIGH);
    digitalWrite(segD, LOW);
    digitalWrite(segE, LOW);
    digitalWrite(segF, LOW);
    digitalWrite(segG, LOW);
    break;
  case 8:
    digitalWrite(segA, HIGH);
    digitalWrite(segB, HIGH);
    digitalWrite(segC, HIGH);
    digitalWrite(segD, HIGH);
    digitalWrite(segE, HIGH);
    digitalWrite(segF, HIGH);
    digitalWrite(segG, HIGH);
    break;
  case 9:
    digitalWrite(segA, HIGH);
    digitalWrite(segB, HIGH);
    digitalWrite(segC, HIGH);
    digitalWrite(segD, HIGH);
    digitalWrite(segE, LOW);
    digitalWrite(segF, HIGH);
    digitalWrite(segG, HIGH);
    break;
  case 10:
    digitalWrite(segA, HIGH);
    digitalWrite(segB, HIGH);
    digitalWrite(segC, HIGH);
    digitalWrite(segD, HIGH);
    digitalWrite(segE, HIGH);
    digitalWrite(segF, HIGH);
    digitalWrite(segG, LOW);
    break;
  default:
    break;
    }
    
    countPress = 0;
  }