improved communicator

/**
 * [{ letter: 'A', morse: '.-' }, { letter: 'B', morse: '-...' }, { letter: 'C', morse: '-.-.' }, { letter: 'D', morse: '-..' }, { letter: 'E', morse: '.' }, { letter: 'F', morse: '..-.' }, { letter: 'G', morse: '--.' }, { letter: 'H', morse: '....' }, { letter: 'I', morse: '..' }, { letter: 'J', morse: '.---' }, { letter: 'K', morse: '-.-' }, { letter: 'L', morse: '.-..' }, { letter: 'M', morse: '--' }, { letter: 'N', morse: '-.' }, { letter: 'O', morse: '---' }, { letter: 'P', morse: '.--.' }, { letter: 'Q', morse: '--.-' }, { letter: 'R', morse: '.-.' }, { letter: 'S', morse: '...' }, { letter: 'T', morse: '-' }, { letter: 'U', morse: '..-' }, { letter: 'V', morse: '...-' }, { letter: 'W', morse: '.--' }, { letter: 'X', morse: '-..-' }, { letter: 'Y', morse: '-.--' }, { letter: 'Z', morse: '--..' },
 */
let morseCode = [ { letter: 'A', morse: '.-' }, { letter: 'B', morse: '-...' }, { letter: 'C', morse: '-.-.' }, { letter: 'D', morse: '-..' }, { letter: 'E', morse: '.' }, { letter: 'F', morse: '..-.' }, { letter: 'G', morse: '--.' }, { letter: 'H', morse: '....' }, { letter: 'I', morse: '..' }, { letter: 'J', morse: '.---' }, { letter: 'K', morse: '-.-' }, { letter: 'L', morse: '.-..' }, { letter: 'M', morse: '--' }, { letter: 'N', morse: '-.' }, { letter: 'O', morse: '---' }, { letter: 'P', morse: '.--.' }, { letter: 'Q', morse: '--.-' }, { letter: 'R', morse: '.-.' }, { letter: 'S', morse: '...' }, { letter: 'T', morse: '-' }, { letter: 'U', morse: '..-' }, { letter: 'V', morse: '...-' }, { letter: 'W', morse: '.--' }, { letter: 'X', morse: '-..-' }, { letter: 'Y', morse: '-.--' }, { letter: 'Z', morse: '--..' } ]
radio.onReceivedNumber(function (receivedNumber) {
    text_letter = "?"
    if (receivedNumber == 1) {
        letter = "" + letter + "-"
    } else if (receivedNumber == 2) {
        morseCode.forEach(function (morseLetter) {
            if (morseLetter.morse == letter) {
                text_letter = morseLetter.letter
            }
        })
        letter = ""
        basic.showString(text_letter)
        basic.pause(250)
        basic.clearScreen()
    } else if (receivedNumber == 3) {
        basic.showLeds(`
            # # # # #
            # # # # #
            # # # # #
            # # # # #
            # # # # #
            `)
        basic.pause(250)
        basic.clearScreen()
    } else {
        letter = "" + letter + "."
    }
})
input.onButtonPressed(Button.B, function () {
    bPresses += 1
    input_b += 1
    lastBPress = clock
})
input.onButtonPressed(Button.AB, function () {
    // if (input_a == passcode_c && input_b == passcode_d)
    // { group = 4 input_a = 0 input_b = 0 } else { if
    // (input_a == passcode_a && input_b == passcode_b) {
    // group = 5 input_a = 0 input_b = 0 } else { input_a
    // = 0 input_b = 0 if (group < 3) { group += 1 } else
    // { group = 1 } } }
    group = input_a * 10 + input_b
    input_a = 0
    input_b = 0
    radio.setGroup(group)
    radio.sendString("A")
    basic.showNumber(group)
    basic.pause(100)
    basic.clearScreen()
})
input.onButtonPressed(Button.A, function () {
    aPresses += 1
    input_a += 1
    lastAPress = clock
})
radio.onReceivedString(function (receivedString) {
    basic.showString(receivedString)
    basic.pause(100)
    basic.clearScreen()
})
let lastAPress = 0
let aPresses = 0
let clock = 0
let lastBPress = 0
let bPresses = 0
let text_letter = ""
let group = 0
let input_b = 0
let input_a = 0
let letter = ""
let passcode_d = 0
letter = ""
input_a = 0
input_b = 0
let passcode_a = 1
let passcode_b = 2
let passcode_c = 3
passcode_d = 7
group = 1
radio.setGroup(1)
radio.sendString("A")
basic.showNumber(group)
basic.pause(100)
basic.clearScreen()
basic.forever(function () {
    if (aPresses == 1) {
        if (clock - lastAPress > 3) {
            radio.sendNumber(0)
            aPresses = 0
        }
    } else if (aPresses == 2) {
        radio.sendNumber(2)
        aPresses = 0
    }
    if (bPresses == 1) {
        if (clock - lastBPress > 3) {
            radio.sendNumber(1)
            bPresses = 0
        }
    } else if (bPresses == 2) {
        radio.sendNumber(3)
        bPresses = 0
    }
    clock += 1
    basic.pause(100)
})