65. Interrupt Conditions
Question.5
After uploading and executing the code below on an Arduino UNO, apply the given digital signal to PIN 2 (External Interrupt INT0). What will be the final updated value of the counter variable after the signal is applied?
Code
volatile unsigned long counter = 0;
void setup() {
pinMode(2, INPUT_PULLUP);
attachInterrupt(digitalPinToInterrupt(2), incrementCounter, LOW);
}
void loop() {
}
void incrementCounter() {
counter++;
}Digital Signal:
