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RE: [Paparazzi-devel] modem question

From: Roman Krashanitsa
Subject: RE: [Paparazzi-devel] modem question
Date: Mon, 9 Jun 2008 10:13:47 -0700

Hi  Chen,

In current implementation MaxStream's  Xbee-type modems and Aerocomm modems
can work in two modes: 1/ serial extension mode when modem acts as a serial
cable replacement; and 2/ as an active tranceiver where it uses its own
protocol to efficiently transmit autopilot telemetry wrapped in its own
protocol. Using serial cable replacement mode you will not be able to
transmit any data on to the airplane, only receive telemetry from it.

So, to answer your question, any modem (I think) will work as a serial cable
replacement. But if you want efficiency and fault proof, and to be able to
change parameters in flight you have to implement its own protocol with
adressed packets.

Roman Krashanitsa

> -----Original Message-----
> From: 
> address@hidden 
> [mailto:address@hidden
> rg] On Behalf Of C Kuo
> Sent: Monday, June 09, 2008 2:45 AM
> To: address@hidden
> Subject: [Paparazzi-devel] modem question
> Hi guys
>   I have some question about the modem selection, I hope you 
> guys can give me some help on this.
>   I currently thinking about using the WI232EUR, and I was 
> wondering, how do I declear this modem in the airframe xml 
> file? The curretly example file I used is the funjet, which 
> it declear XBee for the modem.
>   I was wondering, does WI232EUR also ok with this? or I need 
> a different code for it?
> Regards
>        Chen
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