====== Micropython sur ESP8266 ======
suivre https://github.com/micropython/micropython/tree/master/esp8266 pour fabriquer le firmware...

pistes:
  * http://forum.micropython.org/viewtopic.php?t=1655
  * http://www.electrodragon.com/w/MicroPython_ESP8266
  * https://learn.adafruit.com/building-and-running-micropython-on-the-esp8266/micropython-usage
et 
  * de http://docs.micropython.org/en/latest/esp8266/esp8266/quickref.html
<code>
import network

wlan = network.WLAN(network.STA_IF) # create station interface
wlan.active(True)       # activate the interface
wlan.scan()             # scan for access points
wlan.isconnected()      # check if the station is connected to an AP
wlan.connect('essid', 'password') # connect to an AP
wlan.mac()              # get the interface's MAC adddress
wlan.ifconfig()         # get the interface's IP/netmask/gw/DNS addresses

ap = network.WLAN(network.AP_IF) # create access-point interface
ap.active(True)         # activate the interface
ap.config(essid='ESP-AP') # set the ESSID of the access point

</code>
<code>
def do_connect():
    import network
    wlan = network.WLAN(network.STA_IF)
    wlan.active(True)
    if not wlan.isconnected():
        print('connecting to network...')
        wlan.connect('essid', 'password')
        while not wlan.isconnected():
            pass
    print('network config:', wlan.ifconfig())
</code>