def wifi_connect(ssid, pwd):
"""
Connect to a wifi 'ssid' with password 'pwd'
"""
sta_if = network.WLAN(network.STA_IF)
ap_if = network.WLAN(network.AP_IF)
if ap_if.active():
ap_if.active(False)
if not sta_if.isconnected():
print('Connecting to network {}...'.format(ssid))
sta_if.active(True)
sta_if.connect(ssid, pwd)
while not sta_if.isconnected():
pass
print("Connected!")
return 'IP address: %s' % sta_if.ifconfig()[0]
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