RE: [Paparazzi-devel] modem question

[Roman Krashanitsa]

Hey guys, 

Is anyone interested in using Aerocomm modems, or actually using them? If
yes then I will post the drivers. 

Right now we are using Aerocomm 4790 1x1 and its pretty successful. They
have 2.4GHz, 900MHz and 868(?)MHz.


Roman 

> -----Original Message-----
> From: 
> address@hidden 
> [mailto:address@hidden
> rg] On Behalf Of Roman Krashanitsa
> Sent: Monday, June 09, 2008 4:46 PM
> To: address@hidden
> Subject: RE: [Paparazzi-devel] modem question
> 
> 
> 
> Hi Pascal,
> 
> Thanks for clearing that up. On my part I should admit that 
> after we spoken during the competition I still havent 
> uploaded the protocol implementation for Aerocomm, even 
> though I used it during the competition :) . I havent used 
> cvs for already a year. Can you give me pointers what form 
> will be convenient and which directory it should go? Some 
> integration into the current version will be required.
> 
> Sincerely,
> Roman Krashanitsa 
> 
> > -----Original Message-----
> > From: 
> > address@hidden
> > [mailto:address@hidden
> > rg] On Behalf Of address@hidden
> > Sent: Monday, June 09, 2008 1:10 PM
> > To: address@hidden
> > Subject: RE: [Paparazzi-devel] modem question
> > 
> > Hi,
> > 
> > implementation using the modem API, allowing to send 
> adressed packets, 
> > is currently done only for MaxStream modems (xTend or Xbee). To my 
> > knowledge, this is not possible with Aerocomms (it would require to 
> > change to a "command" mode between each send).
> > 
> > If the autopilot is configured in transparent mode, a serial cable 
> > will behave the same.
> > 
> > If the autopilot is configured in MaxStream mode (wrongly 
> historically 
> > named XBEE in the airframe file), it will work with a 
> serial cable in 
> > the same way ... thanks to a hack. It should not work since 
> the sender 
> > host is supposed to send a
> > TX16 packet to the sending modem while the receiving modem sends a 
> > RX16 packet to the receiver host. When the pair of modems 
> is replaced 
> > by a serial cable, the receiver will get an unexpected TX16 packet. 
> > However, both receivers, airborne and ground, are hacked to take it 
> > into account:
> > 
> > sw/airborne/xbee.h:206
> > sw/lib/ocaml/xbee.ml:172
> > 
> > --Pascal
> > 
> > 
> > Quoting Yves Touchette <address@hidden>:
> > 
> > > Humm,
> > >
> > > I think that this statement is incorrect:
> > >
> > > > protocol. Using serial cable replacement mode you will
> > not be able
> > > > to transmit any data on to the airplane, only receive
> > telemetry from it.
> > >
> > > As far as I know you can still send command to the aircraft (move 
> > > waypoints, tune some parameters, etc).
> > >
> > > Could someone confirm this?
> > >
> > > Regards,
> > >
> > > -yvest
> > >
> > > _________________________________________________________________
> > >
> > >
> > 
> > 
> > 
> > 
> > _______________________________________________
> > Paparazzi-devel mailing list
> > address@hidden
> > http://lists.nongnu.org/mailman/listinfo/paparazzi-devel
> > 
> 
> 
> 
> _______________________________________________
> Paparazzi-devel mailing list
> address@hidden
> http://lists.nongnu.org/mailman/listinfo/paparazzi-devel
>