not recieving RS186 sensor data on gateway

[Justine]

Hi,

I have set up the AEP gateway and I successfully join a mDot to the gateway, I can see the payload in node-red when using AT+SEND.

I then tried to connect a RS186 sensor from Laird, I have succesfully used it with another gateway and the the things network, but I would like to be able to see the data sent locally.

I have commissioned the sensor to the gateway and I can see in the dashboard/LoraWan/Device session, that it was seen few minutes ago.
With the CLI, using lora query device stats, I can see the number of up and down increasing.

My problem is that I would like to see my data in node-red, like I did with the mDot.

Does anyone has an idea where the issue is coming ? It seems that the data from the sensor are not “catched” when it looks like it is commissioned.

Thank you.
Justine

[Justine]

I tried to use the command mosquitto_sub -v -t lora/+/+
and I can see that my sensor is sending join request. I don’t know if it is joined or not. This is what I see :
lora/00-25-ca-0a-00-00-85-2f/join_request {“tmst”:1790585540,”chan”:0,”rfch”:0,”freq”:868.1,”stat”:1,”modu”:”LORA”,”datr”:”SF9BW125″,”codr”:”4/5″,”lsnr”:10.8,”rssi”:-38,”size”:23,”data”:”AMyDHOd9k8h/L4UAAArKJQDDFUPFZZc=”,”deveui”:”00-25-ca-0a-00-00-85-2f”,”joineui”:”7f-c8-93-7d-e7-1c-83-cc”,”nonce”:5571,”gweui”:”00-80-00-00-a0-00-36-86″}
lora/00-25-ca-0a-00-00-85-2f/packet_recv {“tmst”:1790585540,”chan”:0,”rfch”:0,”freq”:868.1,”stat”:1,”modu”:”LORA”,”datr”:”SF9BW125″,”codr”:”4/5″,”lsnr”:10.8,”rssi”:-38,”size”:23,”data”:”AMyDHOd9k8h/L4UAAArKJQDDFUPFZZc=”,”deveui”:”00-25-ca-0a-00-00-85-2f”,”joineui”:”7f-c8-93-7d-e7-1c-83-cc”,”nonce”:5571,”gweui”:”00-80-00-00-a0-00-36-86″}
lora/00-25-ca-0a-00-00-85-2f/joined {“remote_js”:false}
lora/00-25-ca-0a-00-00-85-2f/packet_sent {“appeui”:”7f-c8-93-7d-e7-1c-83-cc”,”codr”:”4/5″,”data”:”IFfTmdFmRjXWQYDef5q77Jyx5Up1xev9O2xeUphKE/DC”,”datr”:”SF9BW125″,”deveui”:”00-25-ca-0a-00-00-85-2f”,”freq”:868.10000000000002,”gweui”:”00-80-00-00-a0-00-36-86″,”id”:0,”ipol”:true,”mhdr”:””,”mic”:”4a13f0c2″,”modu”:”LORA”,”ncrc”:true,”opts”:”040002ffff”,”port”:0,”powe”:11,”rfch”:0,”seqn”:0,”size”:33,”tmst”:1791585540,”twnd”:1}
lora/00-25-ca-0a-00-00-85-2f/mac_sent {“appeui”:”7f-c8-93-7d-e7-1c-83-cc”,”deveui”:”00-25-ca-0a-00-00-85-2f”,”gweui”:”00-80-00-00-a0-00-36-86″,”opts”:”040002ffff”}

and in the dashboard, under packets :
00-00-84-e0 868.300 SF7BW125 – – 33 00000000 JnAcc one minute ago See Packet Details
00-00-84-e0 868.300 SF7BW125 9 -38 23 00000000 JnReq one minute ago See Packet Details
00-00-84-e0 868.500 SF7BW125 – – 33 00000000 JnAcc one minute ago See Packet Details
00-00-84-e0 868.500 SF7BW125 6 -35 23 00000000 JnReq one minute ago See Packet Details
00-00-84-e0 868.100 SF7BW125 – – 33 00000000 JnAcc one minute ago See Packet Details
00-00-84-e0 868.100 SF7BW125 10 -38 23 00000000 JnReq one minute ago See Packet Details
00-00-84-e0 868.100 SF7BW125 – – 33 00000000 JnAcc 2 minutes ago See Packet Details
00-00-84-e0 868.100 SF7BW125 10 -41 23 00000000 JnReq 2 minutes ago See Packet Details
00-00-84-e0 868.300 SF8BW125 – – 33 00000000 JnAcc 2 minutes ago See Packet Details
00-00-84-e0 868.300 SF8BW125 11 -37 23 00000000 JnReq 2 minutes ago See Packet Details

Does anybody know if the sensor is joined ? If yes, why can’t I see any data ? If not, do you have any idea why ?
I have set the appEUI and appkey on the sensor, and the devEUI on the gateway, I don’t know what I’m doing wrong.

Thanks.
Justine

[Jason Reiss]

The device is commissioned correctly as the JoinAcc is being sent.

Perhaps the device is not receiving the downlink as another join request is sent?

[Justine]

Ok, I didn’t realise that.
Would you have any idea how I can investigate to know if the sensor got the downlink ?

Thank you

[Justine]

Is there any way to print the precise time of the recieved and sent packet ?
I’m thinking maybe that the downlink is sent outside the Rx windows of the sensor.
I tried to use the gateway with ttn, and it worked perfectly, which makes me think that the problem is comming from a configuration, but everything seems fine to me…

Thank you
Justine

[Jason Reiss]

Looks like your join delay is set to 1 second. The tmst is a value in microseconds of the Rx and Tx packets.

Change the join delay of the network server to 5 seconds and it should succeed.

lora/00-25-ca-0a-00-00-85-2f/join_request {…, “tmst”:1790585540,”chan”:0,”rfch”:0,”freq”:8
lora/00-25-ca-0a-00-00-85-2f/packet_sent {…, ”tmst”:1791585540,”twnd”:1}

[Justine]

Thank you, I was using the private_mts network, I switched to a public network and it worked.
You said tmst is a value in microseconds, but that doesn’t make 1 second. Do you have more information about this value, I couldn’t find a lot, only that’s a timestamp.

Thanks
Justine

[Jason Reiss]

The value is a us timestamp internal to the radio hardware. It is used to schedule downlink packets with precise offsets.

1791585540 – 1790585540 = 1000000 us = 1 s

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