let DSP = 0
let FRQ = 0
let BTN = 0
input.onButtonPressed(Button.A, function () {
    BTN = 1
})
input.onButtonPressed(Button.B, function () {
    BTN = 0
    music.rest(music.beat(BeatFraction.Whole))
})
function F2A() {
    FRQ = pins.map(
    pins.analogReadPin(AnalogPin.P1),
    0,
    1023,
    400,
    1200
    )
    music.ringTone(FRQ)
    DSP = Math.trunc(FRQ / 100)
    basic.showNumber(DSP)
}
BTN = 0
FRQ = 0
F2A()
basic.forever(function () {
    if (BTN == 1) {
        F2A()
    } else {
        music.ringTone(FRQ)
        basic.showString("F2A")
    }
})