Arduino Calibration

begin global
    apin input sensorPin <- a0;
    dpin output ledPin <- 9;

    var sensorValue <- 0;
    var sensorMin <- 1023;
    var sensorMax <- 0;
end global

begin setup
    while millis() < 5000
        sensorValue.analogRead(sensorPin);

        // Record maximum sensor value
        if sensorValue > sensorMax then
            sensorMax <- sensorValue;
        end if

        // Record minimum sensor value
        if sensorValue < sensorMin
            sensorMin <- sensorValue;
        end if
    end loop
end setup

begin main
    // Read the sensor:
    sensorValue <- sensorPin.analogRead();

    // Apply calibration:
    sensorValue.map(sensorMin, sensorMax, 0, 255);

    // Constrain values:
    sensorValue.constrain(0, 255);

    // Fade the LED using sensorValue:
    ledPin.analogWrite(sensorValue);
end main