[SOLVED] LoRaWAN Nano Gateway and TTN - Status not connected

  • Firmware version: 1.7.5.b2

    I have created TTN GW from their console, checked "Legacy Semtech Pakcet Forwarder, selected ttn-router-eu`: https://console.thethingsnetwork.org/gateways/eui-240ac4fffe00ba00

    TTN console still gives me "Status not connected".

    I've used the LoRaWAN Nano GW exaple from this: https://docs.pycom.io/pycom_esp32/pycom_esp32/tutorial/includes/lorawan-nano-gateway.html

    Any ideas how to get GW connected to TTN?


  • @nojava4u if your gateway is connected, you should see in it's log lines like:

    [1194454.555] Pull ack
    [1194479.579] Push ack
    [1194479.579] Pull ack
    [1194504.623] Pull ack
    [1194529.418] Pull ack

    If you do not get that, then either your gateway cannot connect to the the TTN server (unlikely), or your gateway is not (properly) registered. For that, follow the instructions at: https://docs.pycom.io/chapter/tutorials/lora/lorawan-nano-gateway.html, starting with "Registering at TTN".
    Besides that, you will ever see messages being received by your gateway. I see them here too, at my nanogateway about once every 30 minutes. At my fully compliant gateway I'm receiving these every two minutes. Looking at the content, it looks like noise, even if I do not understand the statistics behind that.
    At a triggering preamble length of 40 bit and a data rate of 5670 bit/s, there should not be a random match more often than once every 3 years.

  • I know this is an old post, but I've got my Lopy LoRaWAN nano gateway up and and in Atom console which I am connected by USB, I see this:
    [ 2970.621] Starting LoRaWAN nano gateway with id: b'240AC4FFFE000646'
    [ 2972.960] WiFi connected to: MakeItRain
    [ 2972.964] Syncing time with pool.ntp.org ...
    [ 2973.118] RTC NTP sync complete
    [ 2986.965] Opening UDP socket to ttn-router-us-west ( port 1700...
    [ 2986.977] Setting up the LoRa radio at 903.9001 Mhz using SF7BW125
    [ 2986.992] LoRaWAN nano gateway online
    [ 2986.996] You may now press ENTER to enter the REPL but Did we connect..

    So I used the https://github.com/pycom/pycom-libraries/tree/master/examples/lorawan-nano-gateway
    Code here and followed Alex Corner Week 3. It seems to be working, but my Gateway shows "not connected" on my TTN Console

    I don't have any sensor nodes setup yet, however I'm receiving packets? see below. I have no idea if it actually working because I cannot ping the IP, though it is connected to my wifi and I can see the MAC address and the IP assigned to it in the Wifi Router. I guess my main question is my gateway actually connected to the TTN? Can I send data without a node? Where are these packets coming from??

    MicroPython v1.8.6-703-g5e80328a on 2017-07-05; LoPy with ESP32
    Type "help()" for more information.

    [ 3022.243] Received packet: {"rxpk": [{"data": "xIWurbe8MYL6FkXy9crif61qCaVFXQ==", "time": "2018-04-20T17:14:53.523263Z", "chan": 0, "tmst": 3263950178, "stat": 1, "modu": "LORA", "lsnr": -48, "rssi": -121, "rfch": 0, "codr": "4/5", "freq": 903.9001, "datr": "SF7BW125", "size": 22}]}

    [ 4176.367] Received packet: {"rxpk": [{"data": "3JU0hEE34WkDAv/z5zkMTdMoguptgSSnmE0B4skytmMRvg4FTZN1ZPCl8iBvoXEbgwgaKzkQ06Qs4iQIaGg4lreaF9Wrd7CCQcW+GvCvdMx0DtoJpPrQ/p/+uEYm9XZTAueEhT0EAC88dTnKKcbVuGoej4hmHWa8TH/tdwfYB7CjR1XrgrTSfHBinta2FlCA/OIZb6g5Z1PEIgFqjXd5100aiIJi7LpnAREMleskGbGhncUxQcQpL7xK3N+dCpujweenV9ycoNoS+gKL3jIlOyx+hK6jIYR9v9PLIfEHv1Mrcu/xGfwbRORBL6gYTlUEgp0=", "time": "2018-04-20T17:34:07.646666Z", "chan": 0, "tmst": 121396999, "stat": 1, "modu": "LORA", "lsnr": -44, "rssi": -116, "rfch": 0, "codr": "4/5", "freq": 903.9001, "datr": "SF7BW125", "size": 242}]}
    [ 4937.723] Received packet: {"rxpk": [{"data": "0ccO", "time": "2018-04-20T17:46:49.3603Z", "chan": 0, "tmst": 881125496, "stat": 1, "modu": "LORA", "lsnr": -43, "rssi": -118, "rfch": 0, "codr": "4/5", "freq": 903.9001, "datr": "SF7BW125", "size": 3}]}

    [ 5669.469] Received packet: {"rxpk": [{"data": "iNLdSAM3usU51C84TZp1YG9U8KDpfkQEfA==", "time": "2018-04-20T17:59:00.748699Z", "chan": 0, "tmst": 1611203146, "stat": 1, "modu": "LORA", "lsnr": -48, "rssi": -123, "rfch": 0, "codr": "4/5", "freq": 903.9001, "datr": "SF7BW125", "size": 25}]}

  • @robert-hh said in [SOLVED] LoRaWAN Nano Gateway and TTN - Status not connected:

    : Could you post the sequence of messages you get after starting the gateway. Maybe something else fails, like accessing the ntp service.

    Hi Robert,
    I finally made it work! I've used a different server address;
    once used this, it apeared like less than a minute later.

    now working on the Feather M0 with the LMIC example
    so many different example and little details to take care of but not completely sure yet of so many details... I need to keep looking around :) *but I forgot my laptop charger at the office.... haha

  • @gmtl When the gateway is up & connected, you see messages in the REPL prompt like:

    [310633.921] Pull ack
    [310658.907] Pull ack
    [310678.935] Push ack
    [310683.941] Pull ack
    [310708.928] Pull ack

    This is the log of the UDP communication to the server. If you don't see that, then either the connection is not set up properly or you gateway at the server.
    Edit: Could you post the sequence of messages you get after starting the gateway. Maybe something else fails, like accessing the ntp service.

  • Hello,
    I'm facing the same issue here with the newest firmware and code from github.
    made sure the UDP port was open to the IP of the Lopy board. *even used DMZ to be 100% sure.

    my gateway looks <not connected> in the console.
    I still have no node ready to send data to it...
    curious how long should it take to appear as online on the site ?

    also tester two different routers; ttn-router-eu and the one from the us...

    any help would be appreciated :)

  • @speeeeeed2006
    There have been problems with The Things Network in the past few days causing gateways to be shown as offline


    Keep an eye on ther NOC section of https://status.thethings.network for updates

  • @drasko said in [SOLVED] LoRaWAN Nano Gateway and TTN - Status not connected:


    For me still nothing, I have take the code from the example in Github and changed the firewall of my router to accept UDP from 1700 and still nothing.

  • OK, found the issue - it was the matter of a closed UDP port 1700 on my home router.

    After opening the port on home WiFi router config, LoPy NanoGateway is detected as "connected" on TTN.

  • Here is my boot.py:

    # boot.py -- run on boot-up
    import param
    import os
    import machine
    from machine import UART
    uart = UART(0, 115200)
    if machine.reset_cause() != machine.SOFT_RESET:
        from network import WLAN
        wl = WLAN()
        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 param.known_nets])
        net_to_use = list(nets & known_nets_names)
            net_to_use = net_to_use[0]
            net_properties = param.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.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")
            wl.init(mode=WLAN.AP, ssid=original_ssid, auth=original_auth, channel=6, antenna=WLAN.INT_ANT)

    Can it be that enabling UART is posing the problems?

    I have compared example from GitHub with the one from the documentation - practically no differences. Which might lead to the conclusion that new firmware broke LoRaWAN nano Gateway.

    It should be noted that I am not sending anything to this GW - I am just trying to connect it to TTN. Should I be sending something to it to force it into "active" mode?


  • @jmarcelino I took the latest code from the github repo. I thought that this one should be most up to date.

  • @drasko
    Just to confirm did you use the nano-gateway code on that webpage or from the much more up-to-date repository linked from it? I.e.


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