network_setup.py

#upython standard libraries
import time, ujson, network

def do_connect(sta_if_active = False, #default to inactive station interface
               connections   = [],
               ap_if_active  = None,
               ap_essid      = "MICROPYTHON-AP",
               debug = False,
               ):
    if debug:
        print("### network_setup.do_connect ###")
    
    #check on the network status and wait until connected 
    print("Configuring network settings:")

    has_connection = False

    #first configure the station interface
    sta_if = network.WLAN(network.STA_IF)
    sta_if.active(sta_if_active)
    print("\tSTA_IF active = %s" % sta_if_active)
    if sta_if_active:
        for cn in connections:
            print("\tAttempting to connect to essid = '%s'" % cn[0])
            sta_if.connect(cn[0],cn[1])
            #check that we have actually connected
            # NOTE this is import after calling machine.reset()
            for i in range(10):
                if sta_if.isconnected():
                    print("\tWLAN is connected!")
                    print("\tnetwork_config:", sta_if.ifconfig())
                    has_connection = True
                    break
                time.sleep(1.0)
                if debug:
                    print("\twaiting for WLAN to connect")
            else:
                print("\tWarning: Failed to connect to external network!")

    #next configure access point interface
    ap_if = network.WLAN(network.AP_IF)
    #default to active access point if we don't already have a connection
    if ap_if_active is None:
        ap_if_active = not has_connection
    print("\tAP_IF active = %s" % ap_if_active)
    ap_if.active(ap_if_active)
    if ap_if_active:
        if not ap_essid is None:
            print("\tsetting AP essid = '%s'" % ap_essid)
            ap_if.config(essid=ap_essid)
            
    return (sta_if,ap_if)
        
if __name__ == "__main__":
    do_connect()