Re: [Paparazzi-devel] ATMMega PPM Encoder

[Alfonso Garrido]

Hi Chris,

Telemetry and airframe files are ok, exaclty as yours! 

Our PPM encoder board is blinking at high rate and we have tried with different cables to make sure nothing is broken, so our board and connections seem ok.

However we have all zeros in the PPM message (the PPM output measurements using a voltimeter also indicates zero value!). What are you exactly referring to with PPM configuration? It may be something associated with any failsafe issue?

Thanks,

Alfonso.

> Date: Sun, 22 Apr 2012 07:38:09 +1000
> From: address@hidden
> To: address@hidden
> Subject: Re: [Paparazzi-devel] ATMMega PPM Encoder
>
> Hi Alfonso,
>
> For diagnosis, I suggest you add this to the FBW section of your
> telemetry file if it's not there already:
> --------------------------
> <mode name="debug">
> <message name="PPM" period="0.5"/>
> <message name="RC" period="0.5"/>
> <message name="COMMANDS" period="0.5"/>
> <message name="FBW_STATUS" period="1"/>
> <message name="ACTUATORS" period="5"/>
> </mode>
> --------------------------
> see http://paparazzi.enac.fr/wiki/Telemetry for details
>
> and then add this to your airframe file appropriate firmware section
> of your airframe file (e.g. fixedwing)
> ----------------
> <define name="TELEMETRY_MODE_FBW" value="1"/>
> ----------------
>
> The value ("1" in this case) is the xero-indexed position of the debug
> mode you added above, in my example there are two, and the second one
> is "debug" (first is "default". index "0").
>
> see http://paparazzi.enac.fr/wiki/Radio_Control#Measuring_the_PPM_time_values
> for details
>
> Then, with the messages tool, the check the PPM message - it will show
> you the output of the PPM encoder (assuming it's arriving at the
> autopilot, no broken wires etc). If you get "all zeros" in the PPM
> messages, your PPM encoder board is broken or set up wrong. If you get
> PPM that reflects what you are doing with your radio, but the
> actuators are not changing, then your problem is somewhere else.
>
> Chris Gough
>
> On 4/21/12, Alfonso Garrido <address@hidden> wrote:
> >
> > Hello everybody,
> >
> >
> > I am having problems with my RC link. I have been looking through and I
> > think it may be caused by the JR1 jump. I have read about how to do it in
> > the documentation but I guess I have a different board since the scheme
> > there does not match my board. Could anybody please tell me where is the JR1
> > located in my board (see attached pic)?
> >
> >
> > I am also having troubles with the RC messages. When I click on
> > Tools-->Messages, the servos does not respond to the sticks of the RC even
> > though I have configured the airframe and radio file accordingly, so I guess
> > there is something wrong. Any hint?
> >
> >
> > Thanks.
>
>
> --
> .
>
> _______________________________________________
> Paparazzi-devel mailing list
> address@hidden
> https://lists.nongnu.org/mailman/listinfo/paparazzi-devel