33 lines
780 B
C++
33 lines
780 B
C++
const uint BUZZER_PIN = 0;
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const uint BUTTON_LED_PIN = 5;
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const uint BUTTON_PIN = 6;
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const int BREAK_LENGTH = 240000;
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const int BREAK_STEP = 2000;
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volatile int countdown = 0;
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int step;
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void setup() {
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pinMode(BUTTON_PIN, INPUT_PULLUP);
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// Order of ISRs matter: RISING should be invoked first
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attachInterrupt(digitalPinToInterrupt(BUTTON_PIN), buttonISRtime, CHANGE);
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attachInterrupt(digitalPinToInterrupt(BUTTON_PIN), buttonISRstate, RISING);
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}
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void loop() {
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if (countdown > 0) {
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step = min(BREAK_STEP, countdown);
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countdown -= step;
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digitalWrite(BUTTON_LED_PIN, HIGH);
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delay(min(BREAK_STEP/2, step));
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digitalWrite(BUTTON_LED_PIN, LOW);
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delay(max(step-BREAK_STEP/2, 0));
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} else {
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tone(BUZZER_PIN, 300, 100);
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delay(1000);
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}
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}
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