uPyLibs/boot.py

from network import WLAN as wlan, STA_IF as staif, AP_IF as apif
from time import sleep_ms
from wifi_cfg import wlan_nets

sleep_ms(100)
#make sure AP mode is off and station mode is on
if wlan(apif).active() == True:
    wlan(apif).active(False)
if wlan(staif).active() != True:
    wlan(staif).active(True)

#we don't want to go through all this crap if stored network details are available
#this is inside an if statement because this file gets executed after deepsleep
# so we may still be connected(?)
if wlan(staif).isconnected() != True:
    nets=wlan(staif).scan()
    found_net=False
    for net in nets:
        for cfg_net in wlan_nets.keys():
            if net[0] == b'%s' % cfg_net:
                wlan(staif).connect(cfg_net, wlan_nets[cfg_net])
                found_net=True
                break
    if found_net == False:
        print("couldn't connect to wifi, nets found: %s" % nets)
        print("to fix temporarily, run: wlan(staif).connect('yournet','yourpass'), followed shortly after by wlan(staif).ifconfig()")
        #exit
    else:
        #Loop until wifi is connected and passes DHCP, or until 30 seconds have elapsed.
        slept=0
        while wlan(staif).ifconfig()[0] == '0.0.0.0' or wlan(staif).isconnected() == False:
            if slept > 300:
                break
            sleep_ms(100)
            slept+=1

#import webrepl
#webrepl.start()