print("Cheni")
local n = 1
local sortie = "back"
local timer
local running = true
while running do
    timer = os.startTimer(0.5)
    local event, p1 = os.pullEvent()
    if event == "char" and p1 == "q" then
        running = false
    elseif event == "timer" and p1 == timer then
        rs.setBundledOutput(sortie, n)
        n = n * 2
        if n > 1024 then
            n = 1
        end
    end
end
print("FIN !")