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  3. Access to SLPI_QUP6_UART while voxl-px4 is running

Access to SLPI_QUP6_UART while voxl-px4 is running

Scheduled Pinned Locked Moved Unsolved VOXL 2 and VOXL 2 Mini
voxl-2
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  • madswampM Offline
    madswampM Offline
    madswamp
    wrote on last edited by
    #1

    Hello,
    I have a VOXL2 to which I need to connect two extra sensors that communicate using serial.
    One of the sensors (barcode reader) which I connected to /dev/ttyHS1 using the VOXL 2 USB3.0 / UART Expansion Adapter is already working.
    The problem is where to connect the second sensor (LIDAR), since we tried to connect it to the J19 QUP6 UART, that worked but only if the voxl-px4 is not running, as stated by your documentation.
    Since we wont use any GPS is there anyway to be able to read the data from the sensor using the libqrb5165-io even when voxl-px4 is running?
    Is there any other serial port available?
    Thank you.

    ModeratorM Alex KushleyevA 2 Replies Last reply
    0
    • madswampM madswamp

      Hello,
      I have a VOXL2 to which I need to connect two extra sensors that communicate using serial.
      One of the sensors (barcode reader) which I connected to /dev/ttyHS1 using the VOXL 2 USB3.0 / UART Expansion Adapter is already working.
      The problem is where to connect the second sensor (LIDAR), since we tried to connect it to the J19 QUP6 UART, that worked but only if the voxl-px4 is not running, as stated by your documentation.
      Since we wont use any GPS is there anyway to be able to read the data from the sensor using the libqrb5165-io even when voxl-px4 is running?
      Is there any other serial port available?
      Thank you.

      ModeratorM Offline
      ModeratorM Offline
      Moderator
      ModalAI Team
      wrote on last edited by
      #2

      @madswamp you should modify the PX4 build to support your use case

      1 Reply Last reply
      0
      • madswampM madswamp

        Hello,
        I have a VOXL2 to which I need to connect two extra sensors that communicate using serial.
        One of the sensors (barcode reader) which I connected to /dev/ttyHS1 using the VOXL 2 USB3.0 / UART Expansion Adapter is already working.
        The problem is where to connect the second sensor (LIDAR), since we tried to connect it to the J19 QUP6 UART, that worked but only if the voxl-px4 is not running, as stated by your documentation.
        Since we wont use any GPS is there anyway to be able to read the data from the sensor using the libqrb5165-io even when voxl-px4 is running?
        Is there any other serial port available?
        Thank you.

        Alex KushleyevA Offline
        Alex KushleyevA Offline
        Alex Kushleyev
        ModalAI Team
        wrote on last edited by
        #3

        @madswamp , currently the DSP where PX4 runs can only load one application, for example PX4 or the libqrb5165-io UART bridge. It is not possible to run them concurrently even if you do not use the particular UART port in PX4.

        Is it possible for you to use a serial to USB adapter and plug it into the USB 3.0 port (on the expansion adapter) and the other end into your Lidar?

        madswampM 1 Reply Last reply
        0
        • Alex KushleyevA Alex Kushleyev

          @madswamp , currently the DSP where PX4 runs can only load one application, for example PX4 or the libqrb5165-io UART bridge. It is not possible to run them concurrently even if you do not use the particular UART port in PX4.

          Is it possible for you to use a serial to USB adapter and plug it into the USB 3.0 port (on the expansion adapter) and the other end into your Lidar?

          madswampM Offline
          madswampM Offline
          madswamp
          wrote on last edited by
          #4

          @Alex-Kushleyev, yes, we will do just that, connect a USB Hub to the USB 3.0 Port and connect it to the Hub, that way we still have the USB available for the WiFi and other possible sensors.
          Thank you for your response.

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