Re: GPS rework: Please test and report on software fix prior to attempting any hardware fix

2008-08-08 Thread Neil Brown
On Tuesday August 5, [EMAIL PROTECTED] wrote: > > For a bit more consistency of timing, less manual intervention, and enough > readings to get an idea of the run to run variation in that location, can I > suggest a script? It could do with a timeout when waiting for a fix since > with deivestre

Re: GPS rework: Please test and report on software fix prior to attempting any hardware fix

2008-08-06 Thread -stacy
Andy Green wrote: > These are really interesting, thanks. > > | d i min / avg / max > | 0 0 35.20/ 55.33/144.30 <=== > | 0 1 37.39/ 77.76/315.76 > > | 3 0 36.07/ 42.07/ 47.82 <=== > | 3 1 97.46/173.09/359.69 > > These relative numbers are a bit counterintuitive... it might be worth >

Re: GPS rework: Please test and report on software fix prior to attempting any hardware fix

2008-08-06 Thread Al Johnson
On Wednesday 06 August 2008, Andy Green wrote: > | sysfs entries! From the same location some runs have a best ttff of ~150s > > I guess it means there are "random" accesses to SD Card in background. Perhaps, but I think I saw similar variation from the same location with the SD card removed when

Re: GPS rework: Please test and report on software fix prior to attempting any hardware fix

2008-08-06 Thread Andy Green
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Somebody in the thread at some point said: | On Wednesday 06 August 2008, Andy Green wrote: |> | d i min / avg / max |> | 0 0 35.20/ 55.33/144.30 <=== |> | 0 1 37.39/ 77.76/315.76 |> | |> | 3 0 36.07/ 42.07/ 47.82 <=== |> | 3 1 97.46/173.09/

Re: GPS rework: Please test and report on software fix prior to attempting any hardware fix

2008-08-06 Thread Al Johnson
On Wednesday 06 August 2008, Andy Green wrote: > | d i min / avg / max > | 0 0 35.20/ 55.33/144.30 <=== > | 0 1 37.39/ 77.76/315.76 > | > | 3 0 36.07/ 42.07/ 47.82 <=== > | 3 1 97.46/173.09/359.69 > > These relative numbers are a bit counterintuitive... it might be worth > trying it agai

Re: GPS rework: Please test and report on software fix prior to attempting any hardware fix

2008-08-06 Thread Andy Green
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Somebody in the thread at some point said: | I started a draft of a wiki page here | http://wiki.openmoko.org/wiki/Freerunner_GPS_Software_Fix_TTFF_Measurement_Test | to describe the test and to collect the results. Can you please add the | line you s

Re: GPS rework: Please test and report on software fix prior to attempting any hardware fix

2008-08-06 Thread Michael Shiloh
Andy Green wrote: > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA1 > > Somebody in the thread at some point said: > | Al Johnson wrote: > | > |> For a bit more consistency of timing, less manual intervention, and > enough > |> readings to get an idea of the run to run variation in that location

Re: GPS rework: Please test and report on software fix prior to attempting any hardware fix

2008-08-05 Thread Andy Green
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Somebody in the thread at some point said: | Al Johnson wrote: | |> For a bit more consistency of timing, less manual intervention, and enough |> readings to get an idea of the run to run variation in that location, can I |> suggest a script? It could

Re: GPS rework: Please test and report on software fix prior to attempting any hardware fix

2008-08-05 Thread -stacy
Al Johnson wrote: > > For a bit more consistency of timing, less manual intervention, and enough > readings to get an idea of the run to run variation in that location, can I > suggest a script? It could do with a timeout when waiting for a fix since > with deivestrength 3 and idleclk 1 this can

Re: GPS rework: Please test and report on software fix prior to attempting any hardware fix

2008-08-05 Thread Brian Wilson
When you are collecting data you might also keep in mind conditions vary a lot according to the current satellite constellation. You should include the count of satellites in view and the pdop number with your results data. You can do some planning to make sure you don't run one test when conditio

Re: GPS rework: Please test and report on software fix prior to attempting any hardware fix

2008-08-05 Thread Stefan Fröbe
Hi all, Just to let you know, I tried the above script and am not quite sure the gpsr is completely reset ( e.g. a real cold start occurs ) . However, since I DID apply the HW cap fix that might also be a reason for the results... In short, no matter which settings are used I get a TTFF of 38-42s

Re: GPS rework: Please test and report on software fix prior to attempting any hardware fix

2008-08-05 Thread Al Johnson
On Tuesday 05 August 2008, Michael Shiloh wrote: > Agreed. I've been trying to gather that information for the past little > while. It's proven rather elusive, and I didn't want more people to try > the hardware fix until we really understand what the software fix can > do, so I thought I'd better

Re: GPS rework: Please test and report on software fix prior to attempting any hardware fix

2008-08-04 Thread C R McClenaghan
Agreed. Would be a whole lot easier on everyone if a uboot, kernel(s) and rootfs were provided along with test scripts and a procedures document to follow. On Aug 4, 2008, at 5:02 PM, Josh Thompson wrote: > Could we get a link to some image files to use for this testing? > I'm not > quite

Re: GPS rework: Please test and report on software fix prior to attempting any hardware fix

2008-08-04 Thread Michael Shiloh
Agreed. I've been trying to gather that information for the past little while. It's proven rather elusive, and I didn't want more people to try the hardware fix until we really understand what the software fix can do, so I thought I'd better ask for the test ASAP, and then continue working on t

Re: GPS rework: Please test and report on software fix prior to attempting any hardware fix

2008-08-04 Thread Josh Thompson
Could we get a link to some image files to use for this testing? I'm not quite sure when Andy's fix made it in the kernel. It would also help standardize the tests if we all use the same images. Josh On Mon August 4 2008 7:29:17 pm Michael Shiloh wrote: > Before we conclude that the hardware