from machine import Pin, Signal
LED_PIN = Signal(13, Pin.OUT, invert=False)
BUTTON_PIN = Signal(0, Pin.IN, invert=True)

# Turn off "ready" LED
LED_PIN.off()

# Read configuration from JSON file
with open('config.json') as fd:
    import ujson
    config = ujson.load(fd)

# Configure wireless networking
import network
wifi_host = network.WLAN(network.AP_IF)
wifi_host.active(False)

wifi_guest = network.WLAN(network.STA_IF)
wifi_guest.active(True)
if not wifi_guest.isconnected():
    wifi_guest.connect(config['wifi']['ssid'], config['wifi']['password'])
    while not wifi_guest.isconnected():
        pass
print(wifi_guest.ifconfig())

# Turn on "ready" LED
LED_PIN.on()