boolean holds one of two values, true or false. (Each boolean variable occupies one byte of memory.)
Example
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int LEDpin = 5; // LED to pin 5
int switchPin = 13; // One end of the push button switch is connected to pin 13 and the other end is connected to ground
boolean running = false;
void setup()
{
pinMode(LEDpin, OUTPUT);
pinMode(switchPin, INPUT);
digitalWrite(switchPin, HIGH); // Enable pull-up resistor
}
void loop()
{
if (digitalRead(switchPin) == LOW)
{ // Press the switch
delay(100); // Delay time (to prevent switch bounce)
running = !running; // Toggle LED control variable
digitalWrite(LEDpin, running) // Controlling LEDs
}
}
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See also
－ constants
－ boolean operators
－ Variable Declaration
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The text of the 86Duino reference is a modification of the Arduino reference, and is licensed under a Creative Commons Attribution-ShareAlike 3.0 License. Code samples in the reference are released into the public domain.
