px4io failed to start



  • Hi,
    I am using a Voxl 2 IO Board to get a FrSky transmiter SBUS signal but the px4io can not start when the IO board is connected to Voxl2. When running the px4io status in shell like here How to Access the PX4 Shell. I get

    pxh> qshell px4io status
    INFO  [qshell] Send cmd: 'px4io status'
    INFO  [muorb] SLPI: Marking DeviceNode(qshell_req) as advertised in process_remote_topic
    INFO  [muorb] SLPI: qshell gotten: px4io status
    ERROR [muorb] SLPI: Command px4io not found
    ERROR [muorb] SLPI: Failed to execute command: px4io status
    INFO  [muorb] SLPI: Sending qshell retval with timestamp 191821788, current timestamp 191821790
    INFO  [qshell] cmd returned with: 1
    INFO  [qshell] qshell return value timestamp: 191821788, local time: 191824369
    ERROR [qshell] Command failed
    Command 'qshell' failed, returned -1.
    

    Then I used the command without qshell but it still can't start

    pxh> px4io status
    ERROR [px4io] not started
    ERROR [px4] px4_task_exit: self task not found!
    

    I attempted to command start but it appears to not have the serial port enabled

    pxh> px4io start
    INFO [arch_px4io_serial] Open failed in init
    ERROR [px4io] interface init failed
    ERROR [px4] px4_task_exit: self task not found!
    

    The status of the Voxl IO board is Running in waiting mode

    Note: I tested the same VoxI IO board in a separated Voxl2 Flight Deck and seems to be working as I get RC commands in px4-listener input_rc and the status is Running in standar mode

    Am I missing something?

    Thanks


  • Dev Team

    @andrespalomino Which port have you connected the px4io board to? The startup file /etc/modalai/voxl-px4.config shows the default way to use px4io. In there you can see that the first thing is to detect the board. What happens if you run qshell px4io detect?



  • Hi Eric,

    The IO board is connected to J19 as shown here Host Connection

    Then the px4io detect also shows open failed (notice below I'm running it without qshell)

    pxh> qshell px4io detect
    INFO  [qshell] Send cmd: 'px4io detect'
    INFO  [muorb] SLPI: Marking DeviceNode(qshell_req) as advertised in process_remote_topic
    INFO  [muorb] SLPI: qshell gotten: px4io detect
    ERROR [muorb] SLPI: Command px4io not found
    ERROR [muorb] SLPI: Failed to execute command: px4io detect
    INFO  [muorb] SLPI: Sending qshell retval with timestamp 87951625, current timestamp 87951627
    INFO  [qshell] cmd returned with: 1
    INFO  [qshell] qshell return value timestamp: 87951625, local time: 87956506
    ERROR [qshell] Command failed
    Command 'qshell' failed, returned -1.
    pxh> px4io detect
    ERROR [arch_px4io_serial] Open failed in init
    ERROR [px4io] interface init failed
    ERROR [px4] px4_task_exit: self task not found!
    
    

    Thanks



  • Hi @Eric-Katzfey

    I was looking at how px4 service is initialized voxl-px4.service and I don't have a config file /etc/modalai/voxl-px4.config. Instead the voxl-px4 bash script points to /etc/modalai/voxl.config and that config file has the px4io detect or start under "M0052" platform

    Then I found the system image in this Voxl2 is 1.2.1-M0054-14.1a-perf
    This is how we received it at the end of November, would this be the issue?

    Below the section of the voxl.config file

    
    # On M0052 the GPS and RC drivers run on the apps processor
    if [ $PLATFORM = "M0052" ]; then
        # Pixhawk 4 GPS module
        gps start -d /dev/ttyHS2
    
        # RC input may be coming via either an external M0065 (aka px4io) module
        # or a directly attached Spektrum receiver. First see if the M0065 is detected.
        # This is only applicable for M0052. M0065 is not yet supported on M0054.
        px4io detect
        PX4IO_STATUS=$?
        /bin/echo "PX4IO detect returned value $PX4IO_STATUS"
        if [ $PX4IO_STATUS -eq 0 ]; then
          /bin/echo "Found M0065, starting px4io"
          px4io start
        else
          /bin/echo "M0065 not detected, starting Spektrum RC driver"
          spektrum_rc start -d /dev/ttyHS1
        fi
    # On M0054 the GPS and RC drivers run on SLPI DSP
    else
        # Pixhawk 4 GPS module
        # Only the newer Holybro unit is supported on M0054
        qshell gps start -d 7 -b 115200
    
        # Spektrum RC receiver
        qshell spektrum_rc start -d 8
    fi
    
    
    

  • Dev Team

    @andrespalomino I would definitely recommend moving to the latest platform release 0.9



  • @Eric-Katzfey I updated to release 0.9 and that solved the topic.
    Thanks!


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