I can't include the MAVlink v2 library in Arduino

[8HOKEIAAC]

Hello,

How can I use the  c_library_v2 (https://github.com/mavlink/c_library_v2)? It seems that it doesn't include the "mavlink.h" file directly when I import it to my Arduino project. 

I have downloaded the library and included it with the predefined option in the Arduino IDE, bu I always get the same error:

I am using the PX4 autopilot.

Best regards

[Hamish Willee]

I haven't tried this, but I suggest you look at the example here: https://github.com/mavlink/c_uart_interface_example

This includes the header as shown:

#include <common/mavlink.h>

If that doesn't help, you might also post on PX4 discuss: https://discuss.px4.io/c/mavlink/23

[8HOKEIAAC]

Hi there,

I have tried that, and the result is very similar. It gives an "error compiling to the Adafruit ESP32 Feather". But now it doesn't even say what is that error.

I also posted a thread in PX4 forum (https://discuss.px4.io/t/missing-header-files-in-mavlink-library/22593), and I am waiting for answers. I guess I just need to wait for someone to answer me here or there.

Best

[8HOKEIAAC]

UPDATE: I pasted only the common folder in the libraries, and drag the "protocol.h", "mavlink_types.h", etc., files into that folder.

Now I manage to get some messages (the ones I was getting before I tried this, from and older mavlink library), but not all of them. 

It’s very odd because they are all in the same library, in the same folder, but I can get some but the ones I want I can’t. The “common” folder of the “c_library_v2” is the only folder that I have there.

Why is this happening?

[Patrick JP]

Hi,

I have created a minimal arduino example here: https://github.com/patrickelectric/minimal-arduino-mavlink-example

Em sex., 16 de set. de 2022 às 07:54, Alejandro Pariente Migoya <alejan...@gmail.com> escreveu:

You need to create a header file lets say "mavlinkv2.h" in the root folder /mavlink and that one should look like that:

#ifndef MAVLINK_H
#define MAVLINK_H

#ifndef MAVLINK_STX
#define MAVLINK_STX 254
#endif

#ifndef MAVLINK_ENDIAN
#define MAVLINK_ENDIAN MAVLINK_LITTLE_ENDIAN
#endif

#ifndef MAVLINK_ALIGNED_FIELDS
#define MAVLINK_ALIGNED_FIELDS 1
#endif

#ifndef MAVLINK_CRC_EXTRA
#define MAVLINK_CRC_EXTRA 1
#endif
 
#include "all/all.h" //all or the dialect you desire
#include "protocol.h"


#endif // MAVLINK_H

then from arduino just call #include <mavlinkv2.h>

hope it helps

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Patrick José Pereira
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[ALEJANDRO PARIENTE MIGOYA]

Hi,

 

That’s great, my problem is that even though I can include the library properly, it is causing memory problems when uploading the program to Arduino Uno. It is not normal, idk why….

 

Thanks,

 

Alejandro

Hello,

I am using the PX4 autopilot.

Best regards

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Patrick José Pereira
Electronics Engineer

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