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-.. _arduino-booleanvariables:
-
-boolean
-=======
-
-A **boolean** holds one of two values,
-`true <http://arduino.cc/en/Reference/Constants>`_ or
-`false <http://arduino.cc/en/Reference/Constants>`_. (Each boolean
-variable occupies one byte of memory.)
-
-
-
-Example
--------
-
-::
-
- int LEDpin = 5; // LED on pin 5
- int switchPin = 13; // momentary switch on 13, other side connected to ground
-
- boolean running = false;
-
- void setup()
- {
- pinMode(LEDpin, OUTPUT);
- pinMode(switchPin, INPUT);
- digitalWrite(switchPin, HIGH); // turn on pullup resistor
- }
-
- void loop()
- {
- if (digitalRead(switchPin) == LOW)
- { // switch is pressed - pullup keeps pin high normally
- delay(100); // delay to debounce switch
- running = !running; // toggle running variable
- digitalWrite(LEDpin, running) // indicate via LED
- }
- }
-
-
-
-
-
-
-See also
---------
-
-
-- `constants <http://arduino.cc/en/Reference/Constants>`_
-- `boolean operators <http://arduino.cc/en/Reference/Boolean>`_
-- `Variable Declaration <http://arduino.cc/en/Reference/VariableDeclaration>`_
-
-