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- {
- pinMode(13,OUTPUT); // LED output
- pinMode(2,INPUT); // Button input
- }
- void loop()
- {
- static unsigned char ledState = LOW;
- static unsigned char buttonState = LOW;
- static unsigned char lastButtonState = LOW;
- static unsigned long ledCameOn = 0;
- // If the LED has been on for at least 5 seconds then turn it off.
- if(ledState == HIGH)
- {
- if(millis()-ledCameOn > 5000)
- {
- digitalWrite(13,LOW);
- ledState = LOW;
- }
- }
- // If the button's state has changed, then turn the LED on IF it is not on already.
- buttonState = digitalRead(2);
- if(buttonState != lastButtonState)
- {
- lastButtonState = buttonState;
- if((buttonState == HIGH) && (ledState == LOW))
- {
- digitalWrite(13,HIGH);
- ledState = HIGH;
- ledCameOne = millis();
- }
- }
- }
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