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Re: [Paparazzi-devel] 'COMMAND_CAM_ROLL' undeclared error with make AI R

From: address@hidden
Subject: Re: [Paparazzi-devel] 'COMMAND_CAM_ROLL' undeclared error with make AI RCRAFT=myplane
Date: Fri, 10 Aug 2007 22:07:27 GMT


cam.c may be called in the bottom (makefile) section of your airframe file 
under ap.src and/or sim.src but you don't need/want it.  Calling it 
unnecessarily should not cause a problem however.

The airframe variables have an appended prefix according to their grouping.  In 
this case, there is a COMMAND group in your airframe.xml that may contain the 
variables CAM_ROLL and CAM_PITCH.  Once compiled, these become 
COMMAND_CAM_ROLL, etc.  Again, you do not want/need these variables if you do 
not have camera servos, and again, these should not cause a problem even if 
called unnecessarily.  You can trace the chain of variables with "grep -r 

You may have some partially compiled files screwing things up - try cleaning 
the A/C before compiling.  If that does not help I would suspect a merge error 
or typo in one of your files.  If you use the provided airframe file names and 
flight plan names they will be updated automatically anytime you run "cvs 
update", merging any of your edits with any edits that were done by others, 
often with errors flagged with ">>>>>>>>>>>".  I recommend TKCVS (apt-get 
install tkcvs) for some insight into any differences between your code and the 


-- "John Koches" <address@hidden> wrote:
Hi everyone.  We have made some real good progress here at GVSU, but my 
students are gone for a few weeks and I am back at this on my own.

I am trying to create a new aircraft using the same airframe, radio, and 
telemetry parameters as one that I have up and running in my simulation.  The 
only difference it the name, ac_id and the flight-plan.  I have created a new 
flight plan with a new image that I have provided, but every time I try to use 
make AIRCRAFT I get this undeclared error message for 'COMMAND_CAM_ROLL' and 
'COMMAND_CAM_PITCH'.  So I replaced the flight plan with the original changing 
only the name and ac_id.  I still get the errors.  I have run out of ideas for 
what to try next!  Oh, and my airframe file works with the previous set up and 
it has no camera in it...assuming that CAM refers to camera?

Whatever help you can give would be appreciated.  Thanks in advance!


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