Maximum allowed Rally points?

ArduCopter Copter 3.6
1

I’m trying to figure out the maximum number of rally points that can be set for Copters. I know there was a limit of 6 with APM 2.x hardware. Whats the maximum number of rally points I can set with a cube?

From going through /libraries/StorageManager/StorageManager, comment says Pixhawk supports up to 46 Rally Points but, I am getting “failed to upload rally points” error on MP if I try to upload more than 13 rally points.
I’m using Copter-3.6.2 with MP version 1.3.59.

Any help is appreciated. Thank you

2

Arjun,

I’m afraid that I don’t have an answer but perhaps other will. I also looked at the StorageManager class and it looks to me like it should support 46 rally points.

I suspect one of a few reasons why you’re only allowed to upload 12:

  • bug in MP (if another GCS allows uploading more that would prove it’s an MP issue)
  • incorrect firmware is being loaded to the vehicle. in particular for the Pixhawk boards with the 1MB limit we upload a smaller firmware. Perhaps that firmware has a lower limit
  • some other issue in AP

Sorry i can’t be of more assistance. If we can’t get to the bottom of this and other people are seeing the same limitation then I think raising an issue in the issues list is the way to go.

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3

Randy,

I can try two things:

  1. Try uploading rally points via QGC and see if I get the same problem
  2. Use stock Copter3.6.2 firmware. The firmware I used was a custom version of few of my changes rebased on to 3.6.2.

I will try these and get back. Thank you for the help, @rmackay9.

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4

Hi Randy,

So, I was successfully able to upload 46 rally points but, the error “failed to upload rally points” sporadically appears. Trying again works.

5

Thanks for looking into this. Was it using the stock firmware or using QGC that resolved the issue?

6

I used both the stock firmware and the custom version which had the same result. This was using MP. For some weird reason, QGC says “Rally points not supported”. I was using QGC v3.4.4. Any idea what I was doing wrong?

Thank you,
Arjun

7

Ah, ok. So the original issue was just a sporadic one.

The issue with QGC is probably that we haven’t added support for the new rally point protocol from mavlink. I’m pretty sure it’s on the to-do list…

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