zen-arduino-pedal.ino

#define PIN_PEDAL_ANALOG A0
#define PIN_LED 8

#define MIN_LEVEL 590
#define MAX_LEVEL 620

bool pedalEnabled = false;

void setup() {
	pinMode(PIN_LED, OUTPUT);
	Serial.begin(9600);
}

void loop() {
	int value = analogRead(PIN_PEDAL_ANALOG);
	bool enabled;

	if (value >= MAX_LEVEL) {
		enabled = true;
	} else if (value < MIN_LEVEL) {
		enabled = false;
	} else {
		delay(10);
		return;
	}

	if (enabled == pedalEnabled) {
		delay(10);
		return;
	}

	if (enabled) {
		Serial.println("#ON#");
	} else {
		Serial.println("#OFF#");
	}

	pedalEnabled = enabled;

	digitalWrite(PIN_LED, enabled ? HIGH : LOW);

	delay(10);
}