clone microbit math sample

let max = 0
let base2exp = 0
let n = 0
let tick = 100 // refresh rate in milliseconds
input.onButtonPressed(Button.A, () => {
    decrement()
})
input.onButtonPressed(Button.B, () => {
    increment()
})
function decrement() {
    if (n < 0) {
        n = max
    } else {
        n = n - 1
    }
}
function increment() {
    if (n > max) {
        n = 0
    } else {
        n += 1
    }
}

n = 0 // counter starts at zero
base2exp = 30 //number of binary 'switches'
max = 2 ** base2exp // 2^base2exp

function dec2bin(dec: number) {
    let binN = (dec >>> 0).toString(/*should be able to pass in radix*/)
    basic.showString(binN)
    return binN
}

basic.forever(() => {
    basic.pause(tick)
    basic.showString(dec2bin(n))
})