Re: [Paparazzi-devel] GPS not working

[Chris Wozny]

Jaime,

The modem and GPS do not have to have the same baud rates to
communicate. My uBlox LEA-5H receiver uses 38,400 baud rate and my
Xbee 900 MHz modem uses a 9600 baud rate and I can communicate with
the aircraft and see it's location. Here is my airframe file:

https://github.com/cwozny/paparazzi/blob/dev/conf/airframes/UniversityOfArizona/MV2_Lisa2.xml

- Chris

On Wed, Apr 4, 2012 at 1:38 PM, Jaime Rubio
<address@hidden> wrote:
> I tried that and it is not working yet. I have configured my GPS with
> Ucenter and everything is ok, I set a baud rate of 38400 and I modified the
> airframe file accordingly. However, for my modems I have 9600 as baud rate
> (same as for session). This could be the reason? They all (modems and GPS)
> have to match at the same baud rate?
>
> By the way, is this connection right? It matches tx of autopilot with rx in
> the GPS and the other way around.
>
> Thanks,
>
>
> On Mon, Apr 2, 2012 at 11:57 PM, Romney, Jefferson S <address@hidden>
> wrote:
>>
>> Okay you are using exactly what I was until My GPS broke. Yes the
>> subsystem is in the airframe file.
>>
>>     <subsystem name="gps" type="ublox">
>>       <configure name="GPS_BAUD"          value="B38400"/>
>>     </subsystem>
>> this should be what it says but change the baud to whatever yours is.
>> Ucenter should tell you what baud rate it is talking at.  One thing I didn't
>> like about the PPZUAV's GPS 13 board is it's lack of an led to tell you when
>> it has lock. If you are getting lock on U-center and this code doesn't work,
>> then I'm not sure what the problem is. I could look into it though.
>> ________________________________
>> From: address@hidden
>> address@hidden on behalf of Jaime
>> Rubio address@hidden
>> Sent: Monday, April 02, 2012 9:48 PM
>> To: address@hidden
>> Subject: Re: [Paparazzi-devel] GPS not working
>>
>> The subsystem is loaded through the airframe file, isn't it? About the
>> baud rate, I should review how to do it. I am using a Ublox (LEA 6H mounted
>> on a Paparazzi 13 board). About the PPM, we have checked the order several
>> times and it seems to work properly, the only problem is that we cannot
>> switch to manual mode to fully testing it.
>>
>> Thanks,
>>
>> Jaime.
>>
>> On Mon, Apr 2, 2012 at 11:43 PM, Romney, Jefferson S <address@hidden>
>> wrote:
>>>
>>> Jaime, I have had a few of the same problems with my yapa and GPS. for
>>> GPS, i would check your baud rate and make sure the correct subsystem is
>>> loaded. what type of GPS are you using?  as for the RC, I would check your
>>> PPM and make sure that is changing like it should. an o-scope is probably
>>> the easiest way to do that. if the PPM signal is changing correctly check
>>> your RC file and make sure everything is in the proper order.
>>> ________________________________
>>> From: address@hidden
>>> address@hidden on behalf of Jaime
>>> Rubio address@hidden
>>> Sent: Monday, April 02, 2012 9:32 PM
>>> To: address@hidden
>>> Subject: [Paparazzi-devel] GPS not working
>>>
>>> Hello,
>>>
>>> Trying to get my RC working I have noticed that I cannot switch modes.
>>> Once I open the ground control station, it always stays as auto 2. I think
>>> this may be related to the fact that it doesn't identify any GPS signal and
>>> it works in a kind of failsafe mode automatically, can this be the reason?
>>> There is also an error in the Paparazzi Center saying "Unix.Unix_error(2,
>>> "read", "")". How can I get my GPS working? I have configured it with
>>> U-center and everything is ok, however, it never works when connected to
>>> Yapa.
>>>
>>> Thanks,
>>> --
>>> Jaime Rubio
>>> Autopilot Team Lead
>>> Phone: 386-383-2738
>>> e-mail: address@hidden
>>> _______________________________________________
>>> Paparazzi-devel mailing list
>>> address@hidden
>>> https://lists.nongnu.org/mailman/listinfo/paparazzi-devel
>> --
>> Jaime Rubio
>> Autopilot Team Lead
>> Phone: 386-383-2738
>> e-mail: address@hidden
>> _______________________________________________
>> Paparazzi-devel mailing list
>> address@hidden
>> https://lists.nongnu.org/mailman/listinfo/paparazzi-devel
> --
> Jaime Rubio
> Autopilot Team Lead
> Phone: 386-383-2738
> e-mail: address@hidden
> _______________________________________________
> Paparazzi-devel mailing list
> address@hidden
> https://lists.nongnu.org/mailman/listinfo/paparazzi-devel