Bootloader

-- EEPROM Bootloader for Kino Drone (Minimalist)
local drone = component.list("drone")()
local chunkloader = component.list("chunkloader")()
drone = drone and component.proxy(drone)
chunkloader = chunkloader and component.proxy(chunkloader)
drone.setStatusText("Waiting")
drone.setLightColor(16711680)

if not chunkloader then
    drone.setStatusText("ER-ChkL")
    computer.shutdown()
elseif chunkloader then
    chunkloader.setActive(true)
end

local function boot()
    local e = {} -- Event buffer
    local modem = component.list("modem")()
    if not modem then return end -- No modem found, exit
    modem = modem and component.proxy(modem)
    modem.open(123)  -- Open the wireless communication port
    modem.setWakeMessage("kino_wake")
    modem.broadcast(123, "wake_ack")
    while true do
        local _, _, sender, _, _, message = computer.pullSignal()
        if message == "upload" then
            local program = ""
            while true do
                local _, _, _, _, _, chunk = computer.pullSignal()
                if chunk == "end" then break end -- End of transmission
                program = program .. chunk
            end

            local func, err = load(program)
            if func then
                func() -- Run the Kino script
            else
                modem.send(sender, 123, "kino_update_error: " .. err)
            end
        elseif message == "kino_wake" then
            modem.send(sender, 123, "wake_ack")
        end
    end
end

boot()