Lora Message Drops

[Tejeswar Pokkuluri]

Hi,

I am using MultiConnect mDot to send Lora packets to Multitech conduit, initially everything is working fine but after few days all the messages are being dropped because of CRC error. I observe the following messages in /var/log/messages file of conduit

Jan 10 18:59:44 mtcdt user.info lora-network-server: Parsing 1 rx packets
Jan 10 18:59:44 mtcdt user.warn lora-network-server: Recv’d frame failed CRC check
Jan 10 18:59:47 mtcdt user.info lora-network-server: Parsing 1 rx packets
Jan 10 18:59:47 mtcdt user.warn lora-network-server: Recv’d frame failed CRC check
Jan 10 18:59:59 mtcdt user.info lora-network-server: Parsing 1 rx packets
Jan 10 18:59:59 mtcdt user.warn lora-network-server: Recv’d frame failed CRC check

if I restart the mdot multiple times, it is sending packets again. I would like to know what might be causing this issue and how to avoid these CRC error.

Thanks

[Robert Halpenny]

Hi,

Did you ever receive a response to this? I am having the same issue with an xDot.

INFO] Preparing frame
[INFO] Configure radio for TX
[INFO] Configure radio for TX
[INFO] Rx Window 1
[WARNING] Radio Rx CRC error
[ERROR] state not LINK_RX2 02
[WARNING] SEND TIMED OUT after 10000 ms
[WARNING] Mac: ResetState
[WARNING] Link: ResetState
[ERROR] ACK not received
[ERROR] failed to send data to gateway [-5][Operation Timed Out]
[INFO] Preparing frame
[INFO] Configure radio for TX
[INFO] Configure radio for TX
[INFO] Rx Window 1
[WARNING] Radio Rx CRC error
[ERROR] state not LINK_RX2 02
[WARNING] SEND TIMED OUT after 10000 ms
[WARNING] Mac: ResetState
[WARNING] Link: ResetState
[ERROR] ACK not received
[ERROR] failed to send data to gateway [-5][Operation Timed Out]

This happens with both the latest firmware (2.0.16-7) and 2.0.16-4

Resetting the lora-server does not fix it, only resetting the xDot.

Thanks,

[Tejeswar Pokkuluri]

Hi Robert,

No I haven’t received any response to this yet.

Thanks

[Author]

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