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[Paparazzi-devel] Re: Antenna Track Issues -SOLVED

From: Kurtis Kraemer
Subject: [Paparazzi-devel] Re: Antenna Track Issues -SOLVED
Date: Thu, 17 Mar 2011 09:07:25 -0400

The problem with the Pololu Servo controller and the antenna tracker has been solved.
Thanks to Luke (IAD on RC Groups) for the help:
In the Maestro Control Center, you must select USB Dual Port under the Serial Settings tab. Click apply settings, and it will work. Simple as that (I think...)
I've never updated a wiki before, but I'll see if I can add that info to the antenna tracker page.
Hi Chris,

I finally had a chance to try the antenna tracker again. I set the
controller to a fixed baud rate of 19200 in the Maestro Control
Center. The servos move using the Control Center, but still no
movement through ant_track_pmm. I ran a simulation with tracking mode
activated, and the sliders move in the GUI automatically. However, in
the terminal window I am getting the following errors:

(ant_track_pmm:1915): GLib-GObject-WARNING **: invalid
uninstantiatable type `<invalid>' in cast to `GtkRange'

(ant_track_pmm:1915): Gtk-CRITICAL **: gtk_range_set_value: assertion
`GTK_IS_RANGE (range)' failed

(ant_track_pmm:1915): GLib-GObject-WARNING **: invalid unclassed
pointer in cast to `GtkRange'

(ant_track_pmm:1915): Gtk-CRITICAL **: gtk_range_set_value: assertion
`GTK_IS_RANGE (range)' failed

I honestly don't know enough about linux or programming to know how to
fix this...



> Hi.
> You need to set the baud rate to 19200 for the pololu servo controller
> and check the documentation
> The antenna tracker ("ant_track_pmm.c") communicates at 19200 bps.
> Chris

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