How do you have the gps connected when it is connected directly to the FTDI cable?
From you picture you have shown, you have it connected through the YAPA2 unlike the wiki image ( see here: http://paparazzi.enac.fr/wiki/File:Gps13v09FTDIcable.jpg ) which has the GPS 13 board connector connected directly to the FTDI cable.
Liam
Find attached a picture of my GPS (LEA 6H on Paparazzi 13 board). I don't know about LDO, how can I check it? I just did exactly the same as in the picture of the wiki, same FTDI cable and connections.Thanks!On Sun, Apr 8, 2012 at 4:46 PM, Christophe De Wagter <address@hidden> wrote:Beware beware: 3.3v FTDI cables communicate (rx tx) at 3.3v but on the red wire they provide 5V from usb. Make absolutely sure your GPS version has an onboard LDO to make 3.3v. Feeding the ublox chip directly with 5v is frying it.
On Apr 8, 2012 9:12 PM, "Jaime Rubio" <address@hidden> wrote:It is the 3.3V as in the wiki (TTL-232R-3V3).On Sun, Apr 8, 2012 at 3:07 PM, Liam McQuellin <address@hidden> wrote:
The FTDI comes in a 3.3V and a 5V variant. It should be marked on the cable which version you are using.
I am just using a FTDI cable to connect the GPS directly to the laptop as in the wiki. The power is then supplied from the laptop.On Sun, Apr 8, 2012 at 2:54 PM, David Conger <address@hidden> wrote:
Check the pin outs to be sure you are not supplying 5v to the 3.3v pin.How is power supplied To the board?
Regards,DavidI had exactly the same problem with exactly the same gps. I haven't found a solution for it yet.
From: address@hidden [address@hidden] on behalf of Jaime Rubio [address@hidden]
Sent: Sunday, April 08, 2012 11:00 AM
To: address@hidden; address@hidden
Subject: Re: [Paparazzi-devel] GPS not working
Hello,
I am really having a hard time with the GPS. What previously worked in Ucenter is no longer working.
I plug the GPS through a FTDI cable and Ucenter is not able to read anything.
Any help? How should I proceed with Ucenter? The wiki is not useful for me anymore!
Thanks!
On Fri, Apr 6, 2012 at 3:29 PM, Chris Wozny <address@hidden> wrote:
On Thu, Apr 5, 2012 at 6:35 AM, Jaime RubioSetting the GPS up was extremely quick for us in uCenter and the only
<address@hidden> wrote:
>
> I have added what you suggested me, but there is no GPS in the Ground Control Station. The only lines in the airframe file I have related to GPS (Ublox LEA 6H) are:
>
> <modules>
> <load name="gps_ubx_ucenter.xml" >
> </load>
> </modules>
>
> <subsystem name="gps" type="ublox">
> </subsystem>
>
thing the airframe required was defining the subsystem as "ublox". If
I were having this much trouble, I would hook up the GPS module to a
USB-to-UART connector and make sure the configuration didn't get wiped
due to a dead battery or something. If you're using Linux or OSX you
can check it with the "screen" command.
Our GS407 (based on uBlox LEA-5H) took probably a minute or two to get
> How long should the GCS take to detect any GPS signal? I have to connect the rx from the GPS to the tx in Yapa and tx from GPS to rx in Yapa, haven't I? By the way, I have Ucenter in Windows, not in Ubuntu, just if this could be the reason.
>
it's first position lock outdoors.
>
> On Thu, Apr 5, 2012 at 2:49 AM, Christophe De Wagter <address@hidden> wrote:
>>
>> Hi,
>>
>> If you have a ublox I would recommend to use
>>
>> <modules>
>> <load name="gps_ucenter.xml" />
>> </modules>
>>
>> This module has auto-baudrate, and configures all message rates and communication ports. (it does not change the filter mode, or functional GPS settings, only communication stuff: so it is always safe to use).
>>
>> The module will send a DEBUG message that indicates the firmware version in your GPS, the previously selected GPS baudrate and the current (38k4).
>>
>> -Christophe
>>
>> On Tue, Apr 3, 2012 at 5:32 AM, Jaime Rubio <address@hidden> wrote:
>>>
>>> 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
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<GPS.jpg>
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