ALTITUDE: support reading altitude of copter

[Ahrovan]

Issue details

pixhawk.ethz.ch/mavlink/#ALTITUDE contain the current system altitude and useful for use in ros (and ...). please Introduce a way to solve this problem and add reading altitude of copter.

Version

ardupilot master,Copter,pixhawk

[amilcarlucas]

This fix is easy to do. This is a good first issue for a student starting to work in the codebase. Unfortunatly we do not have a label for that.

[magicrub]

Altitude is available in about a dozen different MAVLink packets. Adding this particular one would be good, but you can just look at others for now to get you going

[IamPete1]

https://mavlink.io/en/messages/common.html#ALTITUDE

[aliakbarkhan]

Issue details

pixhawk.ethz.ch/mavlink/#ALTITUDE contain the current system altitude and useful for use in ros (and ...). please Introduce a way to solve this problem and add reading altitude of copter.

Version

ardupilot master,Copter,pixhawk

is this issue still open i would like to work on it

[amilcarlucas]

Is still open, please do.

[gmazzucchi]

This issue is solved, the message was added here

[IamPete1]

@tzarjakob although it made it to the AP MAVLink repo we don't actually send it yet.

[gmazzucchi]

That's true, I have made a patch for supporting this message.

[peterbarker]

Oops. Didn't reference this issue on my PR: https://github.com/ArduPilot/ardupilot/pull/21652