[FSO] Speed gps time to firxt fix up?

lollisoft lothar.behrens at lollisoft.de
Sun Jan 4 15:57:56 CET 2009 

With the image from today in testing I get a fix and it seems to work.
But with tangogps I then indeed get the message 'no gps found'.

I have looked if gpsd is running but none of gpsd or fso-gpsd is running.
Starting it with 'gpsd /dev/ttySAC1' works for me.

Now I'll try navit while getting a Döner :-)

Lothar


lollisoft wrote:
> 
> Using sdcard for debian may be no problem. What I currently don't know, is
> if I still can use uBoot or have to install Qi with seems may fail. I
> don't want to
> kill the boot manager accidantly and then be unable to reflash :-)
> 
> But this is RTFM I must do :-(
> 
> BTW, I have a 16GB card that is working - at least seen with navit
> accessing the
> germany.bin file :-)
> 
> Currently I download the new FSO image from today to see if there are no
> more
> problems with GPS.
> 
> What has been failed is upgrading from 4.1 to testing as I then no more
> have any
> XServer or GUI :-(
> 
> Lothar
> 
> 
> Fox Mulder wrote:
>> 
>> If the versions are compareable than it seems that your fso-frameworkd
>> is newer (0.8.4.4>0.8.4.3) and fso-gpsd is older (0.7<0.8).
>> The only thing i know is that i had much problems with older fso-gpsd
>> versions and now it works without problems. Maybe this is a point where
>> you could investigate.
>> 
>> Debian uses the complete fso framework inclusive zhone as phone
>> application.
>> 
>> I prefer debian because i have access to much more programs than with
>> any other distro. Even things like openoffice, wireshark, firefox etc is
>> available for the freerunner in debian. :)
>> 
>> The other side is that it doesn't fit into the 256MB nand flash. The
>> default install uses nearly 1GB but there seems to be people who tries
>> to fit a slimed version into nand. But for me this is no problem if i
>> have to install it on my sd-card (8GB). In return i have a full linux
>> with normal windowmanager and all possibilities i want and need.
>> 
>> The downside of this is that it is slower and consumes more memory than
>> most other distros. I think with a bit less ressource hungry
>> windowmanager it will improve quite a bit. But at the moment i use xfce
>> with all nice extras. ;)
>> 
>> Good thing is that i have one distro in nand and debian on my sd-card.
>> So i can boot what i want when i want.
>> 
>> Ciao,
>>      Rainer
>> 
>> 
>> lollisoft wrote:
>>> Sorry, my post should look like this :-)
>>> 
>>> That's what I see when list installed:
>>> 
>>> root at om-gta02:~# opkg list_installed | grep gps
>>> fso-gpsd - 0.7+gitr8f82d35ae83fdc00f2c4786257e98551b9dea995-r0.1 - 
>>> tangogps - 0.9.3-r3.1 - 
>>> root at om-gta02:~# opkg list_installed | grep framework
>>> frameworkd - 0.8.4.4+gitrbfddd4c28c6dc9d211f1cd78bb4acdafde1aa438-r0.1 - 
>>> frameworkd-config -
>>> 0.8.4.4+gitrbfddd4c28c6dc9d211f1cd78bb4acdafde1aa438-r0.1 - 
>>> root at om-gta02:~# opkg list_installed | grep fso      
>>> fso-gpsd - 0.7+gitr8f82d35ae83fdc00f2c4786257e98551b9dea995-r0.1 - 
>>> fso-sounds - 0.0.1+gitrb24d3c2e66fee10a5e288101cd1b6f5bbd3da7e2-r0.1 - 
>>> task-fso-compliance - 1.0-r1.1 - 
>>> 
>>> root at om-gta02:~# uname -a
>>> Linux om-gta02 2.6.24 #1 PREEMPT Tue Nov 18 18:04:32 CET 2008 armv4tl
>>> unknown
>>> 
>>> And - I am not using debian. My OS is FSO milestone 4.1 aka 'more
>>> homework'.
>>> 
>>> Another question: Has debian also the possibility to run Zhone ? 
>>> 
>>> Do you prefer debian before FSO ?
>>> 
>>> Is debian as small to fit in internal flash (not on /media/card) ?
>>> 
>>> This phone software is compact and therefore fast.
>>> 
>>> Thanks
>>> 
>>> Lothar
>>> 
>>> 
>>> 
>>> Fox Mulder wrote:
>>>> I use debian with fso and when i install fso-gpsd no gpsd is installed
>>>> as dependency because it would make no sense.
>>>> Fso-gpsd IS the gpsd compatibility wrapper which does the same what
>>>> gpsd
>>>> does for the client applications. So be sure not to have fso-gpsd and
>>>> gpsd installed. Both programs try to access the gps which doesn't work.
>>>>
>>>> My current version of fso-gpsd in debian is 0.8-2 and my fso-frameworkd
>>>> is 0.8.4.3-20081215-1. Both are from the official debian repository.
>>>>
>>>> lollisoft wrote:
>>>>> I haven't success.
>>>>>
>>>>> My FSO is the 'more homework' version 4.1.
>>>>>
>>>>> Installing gpsd really installs fso-gpsd. Installing tangogps
>>>>> complains
>>>>> about having two
>>>>> versions matching gpsg, eg. the fso-gpsd and the compatibility (gpsd)
>>>>> wrapper that seems
>>>>> to be installed with fso-gpsd.
>>>>>
>>>>> What version do you use exactly (image locations) ?
>>>>>
>>>>> Tahnks
>>>>>
>>>>> Lothar
>>>>>
>>>>>
>>>>> lollisoft wrote:
>>>>>> Thanks,
>>>>>>
>>>>>> I'll try that too. Also when the connections to the port are more
>>>>>> than 0
>>>>>> it could be
>>>>>> useful to disabling illume to lower the brightness and the like.
>>>>>>
>>>>>> Is this possible within a script ?
>>>>>>
>>>>>> Lothar
>>>>>>
>>>>>>
>>>>>> Fox Mulder wrote:
>>>>>>> I did nothing special.
>>>>>>> I only deinstalled gpsd and installed fso-gpsd. Some time ago
>>>>>>> fso-gpsd
>>>>>>> wasn't working good at all. But a few weeks ago i tried again to
>>>>>>> replace
>>>>>>> gpsd with fso-gpsd and since than it works ok.
>>>>>>> Interesting is that with fso-gpsd the gps chip is activated as soon
>>>>>>> as
>>>>>>> a
>>>>>>> connection to the fso-gpsd port is opened. And it is deactivated
>>>>>>> when
>>>>>>> the last connection closes. This feature has pros and cons but at
>>>>>>> the
>>>>>>> moment i like it. :)
>>>>>>>
>>>>>>> Ciao,
>>>>>>>      Rainer
>>>>>>>
>>>>>>> lollisoft wrote:
>>>>>>>> Hi,
>>>>>>>>
>>>>>>>> what did you made to get GPS working in general ?
>>>>>>>>
>>>>>>>> See my post about GPS ...
>>>>>>>>
>>>>>>>> Thanks
>>>>>>>>
>>>>>>>> Lothar
>>>>>>>>
>>>>>>>>
>>>>>>>> Fox Mulder wrote:
>>>>>>>>> Since a few weeks i'm using fso-gpsd without any big problems so
>>>>>>>>> far.
>>>>>>>>> The only problem is that the TTFF (time to first fix) is always >1
>>>>>>>>> minute and sometimes it needs quite a lot of time. The only
>>>>>>>>> solution
>>>>>>>>> for
>>>>>>>>> me to be sure to get a fix within <30 sec is to use the agps tool
>>>>>>>>> which
>>>>>>>>> downloads the almanac and ephemeris from ublox for my region.
>>>>>>>>> The problem is, that the gps chip doesn't have any internal memory
>>>>>>>>> why
>>>>>>>>> it needs to download all relevant gps data every time it is
>>>>>>>>> powered
>>>>>>>>> up.
>>>>>>>>> So i thought if it is possible to save the relevant gps data
>>>>>>>>> before
>>>>>>>>> shutting down the gps which can be done by fso-gpsd or kernel
>>>>>>>>> automatically. Than after starting the gps fso-gpsd/kernel feeds
>>>>>>>>> back
>>>>>>>>> the data to speed up the TTFF. This would be the same way most gps
>>>>>>>>> receivers work.
>>>>>>>>> Maybe this is already implemented somewhere but i don't think so
>>>>>>>>> because
>>>>>>>>> the TTFF without agps is always quite slow.
>>>>>>>>>
>>>>>>>>> Ciao,
>>>>>>>>>      Rainer
>>>>>>>>>
>>>>>>>>> _______________________________________________
>>>>>>>>> Openmoko community mailing list
>>>>>>>>> community at lists.openmoko.org
>>>>>>>>> http://lists.openmoko.org/mailman/listinfo/community
>>>>>>>>>
>>>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> Openmoko community mailing list
>>>>>>> community at lists.openmoko.org
>>>>>>> http://lists.openmoko.org/mailman/listinfo/community
>>>>>>>
>>>>>>>
>>>> _______________________________________________
>>>> Openmoko community mailing list
>>>> community at lists.openmoko.org
>>>> http://lists.openmoko.org/mailman/listinfo/community
>>>>
>>>>
>>> 
>> 
>> _______________________________________________
>> Openmoko community mailing list
>> community at lists.openmoko.org
>> http://lists.openmoko.org/mailman/listinfo/community
>> 
>> 
> 
> 

-- 
View this message in context: http://n2.nabble.com/-FSO--Speed-gps-time-to-firxt-fix-up--tp2105634p2109246.html
Sent from the Openmoko Community mailing list archive at Nabble.com.

More information about the community mailing list