Cube orange+ total loss rate keep increasing on Datalink connection.Not on CUAV X7 FC

ArduCopter Copter 4.6
1

i have facing issue on the Cube Orange+ that packet loss was observed in Mission planner as well as QGCS On USB connection.

I disabled the Serial5_protocol = -1 which distortion of ADSB data and i disabled all parameter related to ADSB includes type as well., after set this parameter then i reconnected USB and not seen any packet loss. below screen shot is for showing that.

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Next step, same Cube connected through data link ( SIYI , IP data link ) in both android and Windows application of QGCS with Data link it continuous data/packet loss was observed. Refer the QGCS Screen shot of data loss.

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Same Setup of procedure was followed on the CUAV X7 FC through USB and same mentioned or used data link. Both connection there was no issue of packet loss at all.

I also check the LDPC fail counter on the data link found no loss of packets on the data link . clearly evidence that no issue with data link also.

Due to this loss of messages/Packets GCS can not able to read complete parameter and pop up error window.

Why what is the reason that cube Fc facing packet loss issue.

2

Set LOG_DISARMED, 1 and reproduce the issue, send that bin log.
Also provide a photo of the physical connections.

3

Hi @xfacta
As per request i have attached Both USB and data link connection with MP screen record showing data loss and No data loss.

4

When you say “Datalink” do you mean the HM30? or the older 2.4G datalink?

What serial port is the SIYI connected to? Can you supply a photo of the connections?

Are there settings in the Datalink and can you show them?

If the Datalink is connected to SERIAL1 of the Cube then try this setting:
BRD_SER1_RTSCTS,0
or there’s the same parameter for SERIAL2

5

I have used SIYI Mk15 and other 2.4.ghz/5.8ghz data link module.

All data link which I tested on cube orange+ serial1 port.

Our data link baud rate is set to 115200. FC also set to same 115200 baud rate and protocol as MavlinkV2.

I will try setting with RTS and CTS as zero.

From the log file provided have you found any odd fact that cause for message loss rate.

6

Hi @xfacta

I found the root cause for data loss.

Telemetry 1 configured as Mavlink2 at 115200 for Datalink
Telemetry 2 configured as Mavlink2 at 115200 for Mavlink based Gimbal camera.

If both configured and physical connected I can see the packet losses.

If I disconnect the gimbal or disable the telemetry 2 port from mavlink2 ,then there is no packet losses.

This I tried with port swapping between datalink and gimbal result is same packet loss.

So, conclusion is gimbal create the issue here.

But I am wondering how overcome this issue.