let Tau = 0
let Zeit = 0
let Messung = false
Messung = false
Zeit = 0
Tau = 0
basic.forever(function () {
    if (input.buttonIsPressed(Button.A)) {
        pins.analogWritePin(AnalogPin.P0, 1023)
        // store current time
        Zeit = input.runningTime()
        Messung = true
    }
    while (Messung == (true && pins.analogReadPin(AnalogPin.P0) < 644)) {
        basic.showLeds(`
            # # # # #
            . # # # .
            . . # . .
            . # # # .
            # # # # #
            `)
        Tau = input.runningTime() + Zeit
    }
    Messung = false
    basic.showNumber(Tau)
})