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Re: [Paparazzi-devel] Frsky telemetry receiver

From: Tilman Baumann
Subject: Re: [Paparazzi-devel] Frsky telemetry receiver
Date: Mon, 18 Mar 2013 11:39:31 +0000
User-agent: Mozilla/5.0 (X11; Linux i686; rv:17.0) Gecko/20130307 Thunderbird/17.0.4

On 06/08/12 20:02, Chris wrote:
> It is probably a dump idea but i was wondering if there is any
> possibility to steer the modem data (tx only of course) through the
> telemetry serial port of modern telemetry capable receivers like the Frsky.
> It looks like there is one transparent serial port in the receiver that
> comes out from
> the tx module's serial port (rs232).
I's not transparent. Unfortunately.
It expects a frame format like the one from the FrSky Telemetry hub.
FrSky was nice enough to publicly document that data format.
But it's rather useless for us as telemetry link. And there is no word
on througput and latency.
But you could, and that would actually be a brilliant idea, encode some
status information from the autopilot and send it down the FrSky
telemetry link.
It supports things like Altitude, GPS NEMA stream, airspeed, current,
voltages, accelerations. And there are two analog ports for practically
free use.
All that is publicly documented and could easily be implemented.


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