export function ping()

in main.ts [23:40]

• 14 lines of code
• 3 McCabe index (conditional complexity)

    export function ping(trig: DigitalPin, echo: DigitalPin, unit: PingUnit, maxCmDistance = 500): number {
        // send pulse
        pins.setPull(trig, PinPullMode.PullNone);
        pins.digitalWritePin(trig, 0);
        control.waitMicros(2);
        pins.digitalWritePin(trig, 1);
        control.waitMicros(10);
        pins.digitalWritePin(trig, 0);

        // read pulse
        const d = pins.pulseIn(echo, PulseValue.High, maxCmDistance * 58);

        switch (unit) {
            case PingUnit.Centimeters: return Math.idiv(d, 58);
            case PingUnit.Inches: return Math.idiv(d, 148);
            default: return d ;
        }
    }