Discussions

Number of Waypoints

Posted by Martin on September 26, 2013 at 8:42am

First i say hello because I am a new member. (sorry for my English. I am Spanish speaking)
Hi, I have a x8 wing with px4 autopilot.
I use that with Mision Planner, and when i try to charge a flight plan with 170 waypoint or more, my system does not work.
specifically, if interrogated px4 having sent over 170 waypoint, do not return anything.
How waipoints has at most?
It is a problem of firmware or software?
Thanks

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Replies

  • This reply was deleted.
  • Martin March 28, 2015 at 8:25pm
    Hi Michael,

    Thank you very much for that news!

    Creers

    Martin
  • Developer
    Michael Oborne March 28, 2015 at 5:28pm

    please update MP, there was a limit of 255 wp's but is now fixed. latest mp is 1.3.21

  • Developer
    Andrew Tridgell October 9, 2013 at 11:37pm

    Hi Martin,

    Currently it is limited to 127. I plan on increasing this a lot on PX4 soon, but haven't done it yet.

    Cheers, Tridge

    • Mapper905 > Andrew Tridgell September 14, 2014 at 7:56pm

      Anything changed here? I still can't seem to write more than about 150 waypoints...  I'm using the Pixhawk -- plenty of memory, right?

      • Developer
        Andrew Tridgell > Mapper905 September 14, 2014 at 10:13pm

        The limit is now a bit over 700 (in fact 724 for plane/rover and 718 for copter)

        That will only apply to copter once 3.2 is out though. You could try a beta version if you need more now.

        Cheers, Tridge

        • Mapper905 > Andrew Tridgell September 15, 2014 at 8:10pm

          Thanks, Tridge. That's great news. I understand that was added in 3.1 plane, right? I'll upgrade if so.

          If it's not too hard to explain, why the 'odd' limits?  Will the number eventually grow significantly greater for big mapping missions, or have we reached some memory barrier?

          • Developer
            Andrew Tridgell > Mapper905 September 15, 2014 at 8:25pm

            If it's not too hard to explain, why the 'odd' limits?  Will the number eventually grow significantly greater for big mapping missions, or have we reached some memory barrier?

            It's the number of bytes available in the 16k FRAM of the Pixhawk for missions. See this code:

            https://github.com/diydrones/ardupilot/blob/master/libraries/Storag...

            we may support having mission items on the microSD card in future, in which case you would be able to go much larger, but for now that is all we can do.

            Cheers, Tridge

            • This reply was deleted.
              • Developer
                Andrew Tridgell February 22, 2015 at 12:44pm

                How did you try it? What error did you receive? Do you have a tlog?

                It may be that not all ground stations have sufficiently long mission upload timeouts to support large numbers of waypoints.

                Cheers, Tridge

                • This reply was deleted.
                  • Developer
                    Andrew Tridgell February 22, 2015 at 9:53pm

                    sounds like it may be a MissionPlanner bug.

                    Can you open an issue?

                    Cheers, Tridge

This reply was deleted.

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