Hi,
I am trying to modify the attitude mavlink message in mission planner. What I need to do is just to add 2 more float entries that will be calculated within APM and sent back to mission planner through mavlink. I already did the modification in APM side and generate the headers from the message definition. In mission planner side, I define the two new variables and modify the mavlink.cs located in ExtLib/mavlink folder. I mofiied the message size and added the two new variables at the end of the attitude_t definition. When compiling mission planner I get this error.
Error 13 'MAVLink.mavlink_attitude_t' does not contain a definition for 'roll2' and no extension method 'roll2' accepting a first argument of type 'MAVLink.mavlink_attitude_t' could be found (are you missing a using directive or an assembly reference?) CurrentState.cs
Error 14 'MAVLink.mavlink_attitude_t' does not contain a definition for 'pitch2' and no extension method 'pitch2' accepting a first argument of type 'MAVLink.mavlink_attitude_t' could be found (are you missing a using directive or an assembly reference?) CurrentState.cs
It seems that as if I don't include the new values in the attitude_t message but I already did. What mavlink reference does mission planner use to build the project, is it the one I modified ExtLib/mavlink/Mavelink.cs or some other file located in another directory?
Replies
the 'MAVLink.mavlink_attitude_t' struct does not contain a field called roll2, make sure you build the mavlink library, then mission planner. and make sure you did modify the struct
Thanks Michael for your help, 'roll2' and 'pitch2' are the new variables I introduce in the attitude_t message. I built the mavlink library. Do I need to modify the struct in the mission planner code? if yes, in which function can I find the struct definition?, because all what I can find in the mission planner code is just a call to raed the messages. I declare the two new variables in "CurrentState.cs" function on the top, the same way that the original 'pitch' and 'roll' are declared.