CC: Tweaked Password Door

local dfpwm = require("cc.audio.dfpwm")
local speaker = peripheral.find("speaker")

local function playDFPWMAudio(fileName)     --Code from https://tweaked.cc/peripheral/speaker.html#v:playAudio.
    local decoder = dfpwm.make_decoder()
    for chunk in io.lines(fileName, 16 * 1024) do
        local buffer = decoder(chunk)
        while not speaker.playAudio(buffer) do
            os.pullEvent("speaker_audio_empty")
        end
    end
end

while true do
    term.clear()
    term.setCursorPos(1, 1)
    term.write("Password: ")
    local input = read("*")
    term.clear()
    term.setCursorPos(1, 1)
    if input == "1111" then
        print("Welcome home!")
        rs.setOutput("back", true)
        sleep(3)
        rs.setOutput("back", false)
    else
        print("ERROR")
        playDFPWMAudio("placeholder.dfpwm")     --Change this to the name of the DFPWM audio file.
        sleep(2)
    end
end