function print_temp()
	s = sensor.attach("DHT22", pio.GPIO18)
	tmr.delayms(500)
	while true do
        print("Temperature : "..s:read("temperature").." Humitité : "..s:read("humidity"))
        tmr.delayms(500)
    end
end

function humi_neo(min, max)
	s = sensor.attach("DHT22", pio.GPIO18)
	neo = neopixel.attach(neopixel.WS2812B, pio.GPIO19, 8)
	tmr.delayms(500)
	pos = 0
	while true do
		neo:setPixel(pos, 0, 0, 0)
		pos = math.floor((s:read("humidity") - min)/(max - min) * 8)
		neo:setPixel(pos, 240, 150, 140)
		neo:update()
		tmr.delayms(500)
	end
end