client = mqtt.client("100", "mqtt.leizour.fr", 8883, true)
client:connect("student", "O99Rq8$F12NXzhL5caya")

-- CLK (clock) : D19 
-- DT  (data)  : D21
-- SW  (Bouton): D23
-- dir = direction de tournage de l'encodeur
-- counter = nombre de cran tourner
-- button = bouton poussoir

function action(dir, counter, button)
    cls()
    lettre = string.char((counter % 26)+65)
    if button==1 then 
        client:subscribe("pendu",mqtt.QOS0,lettre)
    end
    console("Choix lettre : "..lettre)
end

enc = encoder.attach(pio.GPIO19,pio.GPIO21,pio.GPIO23,action)