OTA after join continuous Events

JmanNZ · August 18, 2021, 10:43am

Hi

I have a Heltec V2.1 board that i have tried various examples using the LMIC library (Latest version) with the same result. This is test device so key exposure is a non issue.
The first uplink is ok and the payload decoded correctly and counter is 1 (I am using One example to rule them all) Device is setup for AU915.
After the first uplink this happens and repeats what looks like every 5 seconds or so
any pointers ideas are most welcome

Device-id: wifi-lora-32-v2
LMIC library: MCCI
Activation: OTAA
Interval: 60 seconds

000000022160: Event: EV_JOINING
000000022253: Event: EV_TXSTART

000000022338: doWork job started
000000363279: Event: EV_JOINED
Network Id: 19
Device Address: 260DFB03
Application Session Key: EC-BC-6E-DB-EB-F5-3C-21-4B-88-61-1D-46-03-0A-76
Network Session Key: ED-E6-1D-FD-10-09-58-4C-63-09-18-51-2D-14-5F-78

000000364170: doWork job started
000000367495: Input data collected
COUNTER value: 1
000000367529: Packet queued
000000367605: Event: EV_TXSTART
000000706716: Event: EV_TXCOMPLETE
Up: 1, Down: 1
Downlink received
RSSI: -69 dBm, SNR: 6.7 dB
Port: 0
000000737358: Event: EV_TXSTART
000001076452: Event: EV_TXCOMPLETE
Up: 2, Down: 2
Downlink received
RSSI: -70 dBm, SNR: 6.5 dB
Port: 0
000001107092: Event: EV_TXSTART
000001446189: Event: EV_TXCOMPLETE
Up: 3, Down: 3
Downlink received
RSSI: -69 dBm, SNR: 6.7 dB
Port: 0
000001476829: Event: EV_TXSTART
000001815924: Event: EV_TXCOMPLETE
Up: 4, Down: 4
Downlink received
RSSI: -74 dBm, SNR: 3.0 dB
Port: 0
000001846565: Event: EV_TXSTART
000002185660: Event: EV_TXCOMPLETE
Up: 5, Down: 5
Downlink received
RSSI: -72 dBm, SNR: 5.0 dB
Port: 0
000002216301: Event: EV_TXSTART
000002555396: Event: EV_TXCOMPLETE
Up: 6, Down: 6
Downlink received
RSSI: -69 dBm, SNR: 6.5 dB
Port: 0

and from the TTN console

22:20:30 Link ADR request enqueued
22:20:30 Link ADR request enqueued
22:20:30 Successfully scheduled data downlink for transmission on Gateway Server
22:20:30 Schedule data downlink for transmission on Gateway Server Rx1 Delay 5
22:20:30 Forward data message to Application Server Data rate SF10BW125 SNR 11.8 RSSI -58
22:20:30 Store upstream data message
22:20:30 Forward uplink data message Payload Data rate SF10BW125 SNR 11.8 RSSI-58 
22:20:30 Decode uplink data message warning Payload Data rate SF10BW125 SNR 11.8 RSSI-58
22:20:30 Receive uplink data message
22:20:30 Successfully processed data message DevAddr 260D0739 FCnt 2 Data rate SF10BW125 SNR 11.8 RSSI-58
22:20:30 Link ADR rejection received
22:20:30 Receive data message DevAddr 260D0739 FCnt 2 Data rate SF10BW125 SNR 11.8 RSSI-58
22:20:25 Link ADR request enqueued
22:20:25 Link ADR request enqueued
22:20:25 Successfully scheduled data downlink for transmission on Gateway Server
22:20:25 Schedule data downlink for transmission on Gateway Server Rx1 Delay 5
22:20:24 Forward data message to Application Server  Data rate SF10BW125 SNR 11.2 RSSI-58
22:20:24 Store upstream data message 
22:20:24 Forward uplink data message Payload Data rate SF10BW125 SNR 11.2 RSSI-58
22:20:24 Decode uplink data message warning Payload Data rate SF10BW125 SNR 11.2 RSSI-58
22:20:24 Receive uplink data message
22:20:24 Successfully processed data message DevAddr 260D0739 FCnt 1 Data rate SF10BW125 SNR 11.2 RSSI-58
22:20:24 Link ADR rejection received
22:20:24 Receive data message DevAddr 260D0739 FCnt 1 Data rate SF10BW125 SNR 11.2 RSSI-58
22:20:19 Forward data message to Application Server MAC payload 83C9 FPort 10 Data rate SF10BW125 SNR 10 RSSI-60
22:20:19 Store upstream data message
22:20:19 Forward uplink data message Payload counter1 0001 FPort 10 Data rate SF10BW125 SNR 10 RSSI-60
22:20:19 Link ADR request enqueued 
22:20:19 Link ADR request enqueued
22:20:19 Successfully scheduled data downlink for transmission on Gateway Server
22:20:19 Schedule data downlink for transmission on Gateway Server Rx1 Delay 5
22:20:18 Receive uplink data message
22:20:18 Successfully processed data message DevAddr 260D0739 FPort 10 Data rate SF10BW125 SNR 10 RSSI-60
22:20:18 Receive data message DevAddr 260D0739 FPort 10 Data rate SF10BW125 SNR 10 RSSI-60
22:20:15 Forward join-accept to Application Server
22:20:15 Forward join-accept message
22:20:15 Receive join-accept message
22:20:15 Successfully scheduled join-accept for transmission on Gateway Server
22:20:15 Schedule join-accept for transmission on Gateway Server Rx1 Delay 5 
22:20:13 Successfully processed join-request JoinEUI 862A4C214DC9F222 DevEUI 70B3D57ED0044260 Data rate SF10BW125 SNR 10.2 RSSI-55
22:20:13 Join-request to cluster-local Join Server succeeded Session key ID 017B58C6904C9823… 
22:20:13 Accept join-request
22:20:13 Send join-request to cluster-local Join Server Selected MAC version MAC_V1_0_2 
22:20:13 Receive join-request JoinEUI 862A4C214DC9F222 DevEUI 70B3D57ED0044260 Data rate SF10BW125 SNR 10.2 RSSI-55
22:20:12 Successfully processed join-request JoinEUI 862A4C214DC9F222 DevEUI 70B3D57ED0044260 Data rate SF10BW125 SNR 11 RSSI-55
22:20:12 Join-request to cluster-local Join Server succeeded Session key ID 017B58C68E4483DC… 
22:20:12 Accept join-request
22:20:12 Send join-request to cluster-local Join Server Selected MAC version MAC_V1_0_2 
22:20:12 Receive join-request JoinEUI 862A4C214DC9F222 DevEUI 70B3D57ED0044260 Data rate SF10BW125 SNR 11 RSSI-55

Regards
Jman

ConstantJoe · August 18, 2021, 10:46am

How often are you expecting it to transmit?

JmanNZ · August 18, 2021, 8:15pm

Should be every 60 seconds as per the sketch.
Odd thing is every uplink results in a downlink

Regards
Jman

Jeff-UK · August 18, 2021, 8:20pm

Likely because you have device set as confirmed uplink? Turn that option off in settings/firmware as you are only allowed max 10 downloads per day under TTN FUP…

JmanNZ · August 18, 2021, 8:28pm

Hi
Yes the max downloads per day would go nuts
So i guess my question is now how / were do i turn off the confirmed uplink option ?
I assume its in the TTN console somewhere as i have tried a few different sketches with the same issue

Thanks for the help
Jman

Jeff-UK · August 18, 2021, 8:31pm

nope its the node that controls by demanding/requesting confirmed in the uplink message structure… you need to dig into device config & setting or the library you are using if self build…

JmanNZ · August 18, 2021, 9:15pm

Thanks for that
I get the same result with the example ttn-otaa.ino using LMIC V4 library.
So one can only assume the setting is in the LMIC libarary somewhere ?

JmanNZ · August 21, 2021, 5:02am

So i got a Heltec V2,1 board and used the Heltec library and it works perfectly. Revert back to LMIC and issue persists.
The other odd thing with the LMIC library the settings for spreading factor and power seem to be ignored.
with LMIC in the gateway is SF10BW125 in the sketch it is set as LMIC_setDrTxpow(DR_SF7,14)

Thoughts anybody

Regards
Jman

Jeff-UK · August 21, 2021, 7:59am

Sorry I dont follow what you are saying here… when do you mean by LMIC in the gateway? It never goes near the gw… what gw are you using? This makes me suspicious of the nature of your configuration…

descartes · August 21, 2021, 9:36am

Erm, anyone noted which port this daisy chain of comms is on?

Looks like the device is returning something so strange in response to the MAC request that the NS is trying again, and again, and again.

JmanNZ · August 21, 2021, 11:50pm

Hi
I have a public gateway based on on RAK 831 and Pi Zero. This is forwarding packets for other users in my area. As i have access to the gateway console I can see the traffic from the LMIC node.
BTW this is in New Zealand so all configuration is AU915.

Regards
Jman

JmanNZ · August 22, 2021, 12:20am

Any ideas why this would be.

Thanks
Jman

JmanNZ · August 22, 2021, 9:06pm

Looking at your comment re the MAC request i changed the setting below

TTN-NG

To

TTN-G

And this has solved the issue

Regards
Jman

system · August 23, 2021, 11:24pm

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