ModalAI Forum
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Groups
    • Register
    • Login

    HITL with voxl 2

    Ask your questions right here!
    4
    24
    1560
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • Eric KatzfeyE
      Eric Katzfey ModalAI Team @Tamas Pal 0
      last edited by

      @Tamas-Pal-0 I'm not sure. This works in our development environment so something must be different in your environment. What version of Linux are you using? What cable are you using?

      Tamas Pal 0T 1 Reply Last reply Reply Quote 0
      • Tamas Pal 0T
        Tamas Pal 0 @Eric Katzfey
        last edited by

        @Eric-Katzfey
        The issue is fixed. It was a hardware issue. I changed the ftdi cable and the issue was solved. The previous FTDI cable was not allowing me to change anything in /sys/bus/usb-serial/devices/ttyUSB0 directory. The file latency_timer was also not there. However with the other cable, there is no such issue. Thank you for your valuable input.

        1 Reply Last reply Reply Quote 0
        • Tamas Pal 0T
          Tamas Pal 0
          last edited by

          For 3.3v J18 jst port which port of ftdi cable should be used, CTS# or RTS# ?

          Eric KatzfeyE 1 Reply Last reply Reply Quote 0
          • Eric KatzfeyE
            Eric Katzfey ModalAI Team @Tamas Pal 0
            last edited by

            @Tamas-Pal-0 For UART it is just GND, TX, and RX

            Tamas Pal 0T 1 Reply Last reply Reply Quote 0
            • Tamas Pal 0T
              Tamas Pal 0 @Eric Katzfey
              last edited by

              @Eric-Katzfey you mean we only have to connect 3 pins in j18 port ?

              Eric KatzfeyE 1 Reply Last reply Reply Quote 0
              • Eric KatzfeyE
                Eric Katzfey ModalAI Team @Tamas Pal 0
                last edited by

                @Tamas-Pal-0 Yes, the fourth pin is power and we don't want that one.

                1 Reply Last reply Reply Quote 0
                • Tamas Pal 0T
                  Tamas Pal 0
                  last edited by

                  Is there any way to verify that FTDI cable is connected properly with J18 port ?

                  Eric KatzfeyE 1 Reply Last reply Reply Quote 0
                  • Eric KatzfeyE
                    Eric Katzfey ModalAI Team @Tamas Pal 0
                    last edited by Eric Katzfey

                    @Tamas-Pal-0 The easiest way would be to recompile the modalai_dsp PX4 driver to add more debug messages. But if you aren't comfortable with that then we'll need to come up with something else.

                    1 Reply Last reply Reply Quote 0
                    • Tamas Pal 0T
                      Tamas Pal 0
                      last edited by Tamas Pal 0

                      How to do that? Is there any other way to this ?

                      Eric KatzfeyE 1 Reply Last reply Reply Quote 0
                      • Eric KatzfeyE
                        Eric Katzfey ModalAI Team @Tamas Pal 0
                        last edited by

                        @Tamas-Pal-0 The simulator will be sending heartbeat messages out over the serial cable. You can use the screen program to see if anything is coming from voxl 2 in the serial cable.

                        Tamas Pal 0T 1 Reply Last reply Reply Quote 0
                        • Tamas Pal 0T
                          Tamas Pal 0 @Eric Katzfey
                          last edited by

                          @Eric-Katzfey How to use screen program in this case ?

                          Eric KatzfeyE 1 Reply Last reply Reply Quote 0
                          • Eric KatzfeyE
                            Eric Katzfey ModalAI Team @Tamas Pal 0
                            last edited by

                            @Tamas-Pal-0 screen is just a standard Linux program. There are many ways to check the output of the serial port. To start, you could always just do cat /dev/ttyUSB0 and see if anything is coming out. This post shows how to get a hex dump: https://superuser.com/questions/1402386/view-serial-device-output-in-console-in-hex

                            1 Reply Last reply Reply Quote 0
                            • Tamas Pal 0T
                              Tamas Pal 0
                              last edited by Tamas Pal 0

                              The problem is solved. The problem was with ftdi cable. Thank you for your valuable inputs

                              Eric KatzfeyE 1 Reply Last reply Reply Quote 0
                              • Eric KatzfeyE
                                Eric Katzfey ModalAI Team @Tamas Pal 0
                                last edited by

                                @Tamas-Pal-0 Excellent! How were you able to determine that it was the cable?

                                1 Reply Last reply Reply Quote 0
                                • Taylor PresleyT
                                  Taylor Presley
                                  last edited by

                                  @Eric-Katzfey @Tamas-Pal-0 For future users troubleshooting HITL setup, I was having the same issue as above. This cable would not allow me to set the latency or share data with the VOXL 2 through J18 port, but this cable works as intended.

                                  Tamas Pal 0T 1 Reply Last reply Reply Quote 1
                                  • Tamas Pal 0T
                                    Tamas Pal 0 @Taylor Presley
                                    last edited by Tamas Pal 0

                                    @Taylor-Presley Right. Some cables work some don't.

                                    1 Reply Last reply Reply Quote 1
                                    • First post
                                      Last post
                                    Powered by NodeBB | Contributors