LoPy/main-lora-868.py

import os
import machine

uart = machine.UART(0, 115200)
os.dupterm(uart)

known_nets = {
    'UpUpUp': {'pwd': 't4k4tuk4l4nd2', 'wlan_config':  ('192.168.2.115', '255.255.255.0', '192.168.2.1', '192.168.2.1')},
    'Vidit-Fabrik': {'pwd': '%m1n!5NK=$', 'wlan_config':  ('192.168.0.115', '255.255.255.0', '192.168.0.1', '192.168.0.1')}, # (ip, subnet_mask, gateway, DNS_server)
}

if machine.reset_cause() != machine.SOFT_RESET:
    from network import WLAN
    wl = WLAN()
    wl.mode(WLAN.STA)
    original_ssid = wl.ssid()
    original_auth = wl.auth()

    print("Scanning for known wifi nets")
    available_nets = wl.scan()
    nets = frozenset([e.ssid for e in available_nets])

    known_nets_names = frozenset([key for key in known_nets])
    net_to_use = list(nets & known_nets_names)
    try:
        net_to_use = net_to_use[0]
        net_properties = known_nets[net_to_use]
        pwd = net_properties['pwd']
        sec = [e.sec for e in available_nets if e.ssid == net_to_use][0]
        if 'wlan_config' in net_properties:
            wl.ifconfig(config=net_properties['wlan_config'])
        wl.connect(net_to_use, (sec, pwd), timeout=10000)
        while not wl.isconnected():
            machine.idle() # save power while waiting
        print("Connected to "+net_to_use+" with IP address:" + wl.ifconfig()[0])

    except Exception as e:
        print("Failed to connect to any known network, going into AP mode")
        wl.init(mode=WLAN.AP, ssid=original_ssid, auth=original_auth, channel=6, antenna=WLAN.INT_ANT)

from network import LoRa
import socket
import machine
import time

# initialize LoRa in LORA mode
# more params can also be given, like frequency, tx power and spreading factor
lora = LoRa(mode=LoRa.LORA, frequency=868000000)

# create a raw LoRa socket
s = socket.socket(socket.AF_LORA, socket.SOCK_RAW)

while True:
    # send some data
    s.setblocking(True)
    s.send('Hello')

    # get any data received...
    s.setblocking(False)
    data = s.recv(64)
    print(data)

    # wait a random amount of time
    time.sleep(machine.rng() & 0x0F)