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  4. VOXL-CAM is not connecting to QGC through UDP

VOXL-CAM is not connecting to QGC through UDP

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  • A Offline
    A Offline
    Anubhav
    Regular
    wrote on last edited by
    #2

    @Matthew-Booker
    Hi,
    we have followed the tutorial 'https://docs.modalai.com/voxl-vision-px4-telemetry/' and in the you tube link attached 'https://youtu.be/gaV4ubIYFzs' we noticed the message 'Added new UDP connection to IP'.
    when we executed the command 'voxl-vision-px4 --debug_udp_recv' we didn't get the above message.

    voxl:~$ voxl-vision-px4 --debug_udp_recv
    Enabling UDP recv debugging
    loading our own config file
    =================================================================
    Parameters as loaded from config file:
    qgc_ip:                     192.168.1.27
    en_localhost_mavlink_udp    1
    en_secondary_qgc:           0
    secondary_qgc_ip:           192.168.1.214
    qgc_udp_port_number:        14550
    localhost_udp_port_number:  14551
    udp_mtu:                    512
    en_vio:                     1
    en_voa:                     1
    en_send_vio_to_qgc:         1
    en_send_voa_to_qgc:         0
    en_set_clock_from_gps:      1
    en_force_onboard_mav1_mode: 1
    en_reset_px4_on_error:      1
    qvio_auto_reset_quality:    0.000500
    horizon_cal_tolerance:      0.300000
    voa_upper_bound_m:          -0.150000
    voa_lower_bound_m:          0.150000
    offboard_mode:              figure_eight
    follow_tag_id:              0
    figure_eight_move_home:     1
    en_tag_fixed_frame:         0
    fixed_frame_filter_len:     5
    en_transform_mavlink_pos_setpoints_from_fixed_frame:0
    =================================================================
    loading extrinsics config file
    exising instance of voxl-vision-px4 found, attempting to stop it
    starting geometry module
    starting px4 monitor
    starting px4 mavlink
    starting udp mavlink
    Adding manual QGC IP address to udp connection list: 192.168.1.27
    Added new UDP connection to 192.168.1.27
    starting px4 shell
    starting fixed pose input
    starting vio manager
    starting tag manager
    starting voa manager
    starting offboard figure eight
    starting control input pipe
    Init complete, entering main loop
    Connected to voxl-mavlink-server
    Connected to voxl-dfs-server
    Connected to voxl-qvio-server
    updating to use imu: imu1
    done updating transforms to use imu: imu1
    Connected to TOF
    UDP recv msg ID:   0 sysid:255 from port: 14550 IP: 192.168.1.27 
    UDP recv msg ID:   0 sysid:255 from port: 14550 IP: 192.168.1.27 
    UDP recv msg ID:   0 sysid:255 from port: 14550 IP: 192.168.1.27 
    UDP recv msg ID:   0 sysid:255 from port: 14550 IP: 192.168.1.27 
    UDP recv msg ID:   0 sysid:255 from port: 14550 IP: 192.168.1.27 
    
    

    But we were able to ping the Ip's of both voxl-cam and host pc.

    How do we rectify it?

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    • A Offline
      A Offline
      Anubhav
      Regular
      wrote on last edited by Anubhav
      #3

      @tom
      I have already followed the thread given here
      Here is my output of the command systemctl status -l voxl-vision-px4

      voxl:~$ systemctl status -l voxl-vision-px4
      ● voxl-vision-px4.service - voxl-vision-px4
         Loaded: loaded (/usr/bin/voxl-vision-px4; enabled; vendor preset: enabled)
         Active: active (running) since Thu 1970-01-01 00:00:07 UTC; 1min 29s ago
       Main PID: 2029 (voxl-vision-px4)
         CGroup: /system.slice/voxl-vision-px4.service
                 └─2029 /usr/bin/voxl-vision-px4
      
      Jan 01 00:00:09 apq8096 voxl-vision-px4[2029]: Connected to voxl-qvio-server
      Jan 01 00:00:09 apq8096 voxl-vision-px4[2029]: updating to use imu: imu1
      Jan 01 00:00:09 apq8096 voxl-vision-px4[2029]: done updating transforms to use imu: imu1
      Jan 01 00:00:09 apq8096 voxl-vision-px4[2029]: Connected to voxl-dfs-server
      Jan 01 00:00:09 apq8096 voxl-vision-px4[2029]: Connected to voxl-mavlink-server
      Jan 01 00:00:10 apq8096 voxl-vision-px4[2029]: VIO reported failure
      Jan 01 00:01:10 apq8096 voxl-vision-px4[2029]: Disconnected from voxl-qvio-server
      Jan 01 00:01:11 apq8096 voxl-vision-px4[2029]: Connected to voxl-qvio-server
      Jan 01 00:01:11 apq8096 voxl-vision-px4[2029]: updating to use imu: imu1
      Jan 01 00:01:11 apq8096 voxl-vision-px4[2029]: done updating transforms to use imu: imu1
      
      

      And I have already disabled my system firewall.

      anubhav@anubhav-GF63-Thin-9SC:~$ sudo ufw status
      [sudo] password for anubhav: 
      Status: inactive
      
      

      and also tried flashing firmware again.
      Still it's not getting connected to QGC.

      QGC output in terminal

      anubhav@anubhav-GF63-Thin-9SC:~/Downloads$ ./QGroundControl.AppImage 
      Settings location "/home/anubhav/.config/QGroundControl.org/QGroundControl.ini" Is writable?: true
      Filter rules "*Log.debug=false\nGStreamerAPILog.debug=true\nqt.qml.connections=false"
      System reported locale: QLocale(English, Latin, India) ; Name "en_IN" ; Preffered (used in maps):  "en-IN"
      LocalizationLog: Qt lib localization for "en_IN" is not present
      LocalizationLog: Error loading source localization for "en_IN"
      LocalizationLog: Error loading json localization for "en_IN"
      serialnmea: No known GPS device found. Specify the COM port via QT_NMEA_SERIAL_PORT.
      VideoReceiverLog: Stop called on empty URI
      VideoReceiverLog: Stop called on empty URI
      MAVLinkLogManagerLog: MAVLink logs directory: "/home/anubhav/Documents/QGroundControl/Logs"
      Map Cache in: "/home/anubhav/.cache/QGCMapCache300" / "qgcMapCache.db"
      qml: QGCCorePlugin(0x5644b7af97a0) []
      setCurrentPlanViewSeqNum
      setCurrentPlanViewSeqNum
      _recalcFlightPathSegments homePositionValid false
      _recalcFlightPathSegments homePositionValid false
      Adding target QHostAddress("192.168.1.26") 14550
      "v4.2.0"
      
      
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      • A Offline
        A Offline
        Anubhav
        Regular
        wrote on last edited by
        #4

        Anyone knows how to rectify above problem, please help.
        Thank you.

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        • modaltbM Offline
          modaltbM Offline
          modaltb
          ModalAI Team
          wrote on last edited by
          #5

          @Anubhav ,

          What about checking voxl-inspect-services and check for the voxl-mavlink-server ?

          Link Preview Image
          voxl / VOXL SDK / Services / voxl-mavlink-server · GitLab

          GitLab.com

          favicon

          GitLab (gitlab.com)

          There's a voxl-configure-mavlink-server that can be used if not running.

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          • A Offline
            A Offline
            Anubhav
            Regular
            wrote on last edited by
            #6

            Hi @modaltb,
            I had checked for voxl-mavlink-server in voxl-inspect-services, it was enabled and running. also configured both voxl-mavlink-server and voxl-vision-px4 but it didn't got connected to QGC through UDP.

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            • A Offline
              A Offline
              Anubhav
              Regular
              wrote on last edited by
              #7

              Hi @modaltb,
              As mentioned here I have deployed the voxl-mavlink-server in voxl-cam, I used following command in voxl-cross
              ./install_build_deps.sh apq8096 staging
              ./build.sh apq8096
              ./make_package.sh ipk
              and at last successfully deployed it to voxl-cam .
              I have run "voxl-mavlink-server" command and it's showing "PX4 is disconnected from UART" . output is attached below.

              voxl:~$ voxl-mavlink-server 
              loading our own config file
              =================================================================
              Parameters as loaded from config file:
              px4_uart_bus:               5
              px4_uart_baudrate:          921600
              udp_port_to_px4:            14556
              udp_port_from_px4:          14557
              =================================================================
              exising instance of voxl-mavlink-server found, attempting to stop it
              Successfully opened mavparser
              Init complete, entering main loop
              PX4 DISCONNECTED FROM UART
              
              

              Is because of this issue voxl-cam is not connecting to QGC over UDP?

              This is the first time I run voxl-mavlink-server command previous to this I was using systemctl start voxl-mavlink-server and in voxl-inspect-services it used to show voxl-mavlink-server is runnig. and I didn't get message PX4 DISCONNECTED FROM UART when I run voxl-vision-px4 --debug_udp_recv.
              Below I have attached output of voxl-vision-px4 --debug_udp_recv

              voxl:~$ voxl-vision-px4 --debug_udp_recv
              Enabling UDP recv debugging
              detected platform APQ8096
              loading our own config file
              =================================================================
              Parameters as loaded from config file:
              config file version:        1
              qgc_ip:                     192.168.1.27
              en_secondary_qgc:           0
              secondary_qgc_ip:           192.168.1.214
              qgc_udp_port_number:        14550
              udp_mtu:                    512
              en_localhost_mavlink_udp    1
              localhost_udp_port_number:  14551
              en_vio:                     1
              en_voa:                     1
              en_send_vio_to_qgc:         0
              en_send_voa_to_qgc:         0
              voa_upper_bound_m:          -0.150000
              voa_lower_bound_m:          0.150000
              en_set_clock_from_gps:      1
              en_force_onboard_mav1_mode: 1
              en_reset_px4_on_error:      1
              qvio_auto_reset_quality:    0.000500
              horizon_cal_tolerance:      0.300000
              offboard_mode:              figure_eight
              follow_tag_id:              0
              figure_eight_move_home:     1
              en_tag_fixed_frame:         0
              fixed_frame_filter_len:     5
              en_transform_mavlink_pos_setpoints_from_fixed_frame:0
              =================================================================
              loading extrinsics config file
              starting geometry module
              starting px4 monitor
              starting px4 mavlink
              Connected to voxl-mavlink-server
              starting udp mavlink
              Adding manual QGC IP address to udp connection list: 192.168.1.27
              Added new UDP connection to 192.168.1.27
              starting px4 shell
              starting fixed pose input
              starting vio manager
              Connected to voxl-qvio-server
              updating to use imu: imu1
              done updating transforms to use imu: imu1
              starting tag manager
              starting voa manager
              ERROR validating VIO data received through pipe: read partial packet
              read 156 bytes, but it should be a multiple of 324
              starting offboard figure eight
              starting control input pipe
              Init complete, entering main loop
              Connected to TOF
              

              Thanks!

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              • modaltbM Offline
                modaltbM Offline
                modaltb
                ModalAI Team
                wrote on last edited by
                #8

                @Anubhav ,

                When you connect the JST to USB cable, and get a connection from QGC to the Flight Core (eg "getting connected through usb-jst connector after enabling pixhwak device in QGC").

                Can you go to Analyze Tools > MAVLink Console and run mavlink status.

                For example, I have a VOXL2 here in this screen shot, and it's connected to a Flight Core, but it's not working yet, as in this case the Flight Core is transmitting data but not receiving data. I also see that "MAVLink version: 1" is there which to me normally indicates no bi-directional comms has occurred yet.

                instance #1:
                    mavlink chan: #1
                    type:        GENERIC LINK OR RADIO
                    flow control: ON
                    rates:
                      tx: 221.9 B/s
                      txerr: 0.0 B/s
                      tx rate mult: 0.682
                      tx rate max: 1200 B/s
                      rx: 0.0 B/s
                      rx loss: 0.0%
                    FTP enabled: YES, TX enabled: YES
                    mode: Normal
                    MAVLink version: 1
                    transport protocol: serial (/dev/ttyS6 @57600)
                

                You can also see the serial port used in "transport protocol" serial (/dev/ttyS6 @57600) this shows that this MAVLink instance is setup for /dev/ttyS6 --> UART7 --> Flight Core J5 here on my setup.

                For me, I enable voxl-mavlink-server on the VOXL side, then I get action, as seen here:

                
                instance #1:
                    mavlink chan: #1
                    type:        GENERIC LINK OR RADIO
                    flow control: ON
                    rates:
                      tx: 20.9 B/s
                      txerr: 0.0 B/s
                      tx rate mult: 0.682
                      tx rate max: 1200 B/s
                      rx: 20.9 B/s
                      rx loss: 0.0%
                      received from sysid: 0 compid: 197: 14, lost: 0, last 292 ms ago
                    FTP enabled: YES, TX enabled: YES
                    mode: Normal
                    MAVLink version: 2
                    transport protocol: serial (/dev/ttyS6 @57600)
                

                OK, back to VOXL-CAM and your issue (above was shown to you as to how I troubleshoot these connection issues).

                For VOXL-CAM, the Flight Core connects to the VOXL using Flight Core J1 which is UART5 / /dev/ttyS4

                This is TELEM2 by default, and should have the following:

                • MAV_1_CONFIG 102
                • MAV_1_MODE 2
                • SER_TEL2_BAUD 921600

                So you should be able to find a mavlink instance after running mavlink status and hopefully you see a node with:

                transport protocol: serial (/dev/ttyS4 @921600)
                
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                • A Offline
                  A Offline
                  Anubhav
                  Regular
                  wrote on last edited by
                  #9

                  Hi @modaltb,

                  I have connected voxl-cam to QGC by enabling pixhawk device in QGC. And run mavlink status command in mavlink console. I have attached the output below, it's after enabling and starting voxl-mavlink-server.

                  nsh> mavlink status
                  
                  instance #0:
                      GCS heartbeat:    137312 us ago
                      mavlink chan: #0
                      type:        USB CDC
                      flow control: OFF
                      rates:
                        tx: 21.913 kB/s
                        txerr: 0.000 kB/s
                        tx rate mult: 1.000
                        tx rate max: 800000 B/s
                        rx: 0.046 kB/s
                      FTP enabled: YES, TX enabled: YES
                      mode: Config
                      MAVLink version: 2
                      transport protocol: serial (/dev/ttyACM0 @2000000)
                      ping statistics:
                        last: 0.39 ms
                        mean: 0.34 ms
                        max: 840.70 ms
                        min: 0.17 ms
                        dropped packets: 0
                  
                  instance #1:
                      mavlink chan: #1
                      type:        GENERIC LINK OR RADIO
                      flow control: OFF
                      rates:
                        tx: 0.911 kB/s
                        txerr: 0.000 kB/s
                        tx rate mult: 1.000
                        tx rate max: 1200 B/s
                        rx: 0.000 kB/s
                      FTP enabled: YES, TX enabled: YES
                      mode: Normal
                      MAVLink version: 1
                      transport protocol: serial (/dev/ttyS6 @57600)
                  
                  instance #2:
                      mavlink chan: #2
                      type:        GENERIC LINK OR RADIO
                      flow control: ON
                      rates:
                        tx: 12.740 kB/s
                        txerr: 0.000 kB/s
                        tx rate mult: 1.000
                        tx rate max: 46080 B/s
                        rx: 0.000 kB/s
                      FTP enabled: YES, TX enabled: YES
                      mode: Onboard
                      MAVLink version: 1
                      transport protocol: serial (/dev/ttyS4 @921600)
                  
                  • For instance #2 I am able to see node with transport protocol: serial (/dev/ttyS4 @921600).
                  • In instance #2 it's showing MAVLink version: 1. Why in this case there is uni-directional communication? Note: above output is after enabling and starting both voxl-mavlink-serverand voxl-vision-px4.
                  • But in instance #0 it's showing MAVLink version: 2. So there is a bi-directional communication when connected to USB-JST connector. Is it right?

                  I have also tried mavlink status command after enabling both pixhawk and udp devices but the output was same as above.

                  Thanks!

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                  • modaltbM Offline
                    modaltbM Offline
                    modaltb
                    ModalAI Team
                    wrote on last edited by
                    #10

                    This rx: 0.000 kB/s instance 2 tells me it's not getting any data from VOXL.... This is the connection that provides that link:

                    c24bf1be-8000-458a-9380-a633cdb51ab3-image.png

                    Can you confirm that this connection is in place?

                    You have

                    px4_uart_bus:               5
                    px4_uart_baudrate:          921600
                    

                    For voxl-mavlink-server which is correct. 5 = BLSP5 = J12 on VOXL1. It's configured for 921600. Your Flight Core is configured correctly too. So the last thing I would think to do is to probe with an oscilliscope if possible on that connector I pointed out and see if you have bi-directional data.

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                    • A Offline
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                      Anubhav
                      Regular
                      wrote on last edited by
                      #11
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