Una variable bool
conté un de dos valors, vertader o fals. (Cada variable bool
ocupa un byte de memòria).
bool var = valor;
var
: nom de la variable.
val
: el valor a assignar a aqueixa variable.
Aquest codi mostra com usar el tipus de dades bool.
int LEDpin = 5; // LED on pin 5
int switchPin = 13; // momentary switch on 13, other side connected to ground
bool 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
}
}