//arduino program to control a LED and button
//LED is on pin 4
//button is on pin 0
//when button is pressed once LED turns on
//when button is pressed twice LED turns off
//when button is pressed three times LED blinks three times
//when button is pressed four times LED blinks like crazy

#define LED 7
#define BUTTON 8

//variable to keep track of how manny button presses
int buttonPresses = 0;

void setup() {
  Serial.begin(115200);
  delay(10);
  pinMode(LED, OUTPUT);
  pinMode(BUTTON, INPUT_PULLUP);
}

//loop function
void loop() {

  //if button is pressed
  if (digitalRead(BUTTON) == HIGH) {
    //increment buttonPresses
    buttonPresses++;
    //if buttonPresses is greater than 5
    Serial.println(buttonPresses);
    if (buttonPresses > 6) {
      //reset buttonPresses to 0
      buttonPresses = 0;
    }
    //if buttonPresses is 1
    if (buttonPresses == 1) {
      //turn on LED
      digitalWrite(LED, HIGH);
    }
    //if buttonPresses is 2
    if (buttonPresses == 2) {
      //turn off LED
      digitalWrite(LED, LOW);
    }

    //if buttonPresses is 3
    if (buttonPresses == 3) {

      //blink LED three times
      for (int i = 0; i < 3; i++) {
        digitalWrite(LED, HIGH);
        delay(100);
        digitalWrite(LED, LOW);
        delay(100);
      }
    }

    //if buttonPresses is 4
    if (buttonPresses == 4) {
      //blink LED randomly like crazy
      for (int i = 0; i < 100; i++) {
        digitalWrite(LED, random(2));
        delay(50);
      }
      digitalWrite(LED, LOW);
    }
    //wait for button to be released
    while (digitalRead(BUTTON) == HIGH) {
    }
  }
}