**** BEGIN LOGGING AT Tue Oct 15 02:59:58 2013 Oct 15 04:54:50 sounds pretty recent Oct 15 04:56:27 whether it's "stable" or not is another question Oct 15 05:32:43 * pabs3 hmm at http://shr-project.org/trac/wiki/Rock-solid%20Farewell%20Release%20%28GTA02%29 Oct 15 05:34:59 >>pretty much lost its initial fraction<< hmm indeed Oct 15 09:23:20 dos11: hi Oct 15 09:23:40 dos11: regarding wifi, do you remember my mail with "tips and tricks" for ar6001? Oct 15 09:25:12 dos11: regarding fso-gpsd, hm, why? Upstream gpsd doesn't save ephemeris, that's true. But in general it seems like a saner solution. Oct 15 09:26:19 PaulFertser: hello, but sorry, have to go Oct 15 09:26:29 I don't rememeber, but I'll check it later Oct 15 09:27:03 fso-gpsd - well, looks like gps doesn't work oob now (at least here), so read that as just "fix gps", either with gpsd or fso-gpsd :) Oct 15 09:27:21 dos11: please ping me if you have any questions. Oct 15 09:27:35 dos11: i have issues with gps myself but i suspect hardware failure Oct 15 09:27:45 dos11: it feel like my antenna has reduced sensitivity :/ Oct 15 09:27:49 sure, thanks, cya :) Oct 15 09:44:01 agps broken? Oct 15 09:44:40 we recently seen quite a few messups with agps servers Oct 15 09:45:36 and I'd wonder if and how gta02 is using agps data, and which. I guess ublox no longer supports their supl server Oct 15 09:45:49 s/agps server/SUPL/ Oct 15 09:46:05 DocScrutinizer05: not agps, but we do not even have flash to save current ephemeris and almanac on gps module itself, so it's recommended to store them on disk before powering i off. Oct 15 09:46:28 I'm not sure about the supl server, it used to work, but I have no clue what's going on with it now. Oct 15 09:46:34 sure, that's how many gps work Oct 15 09:47:50 There're dirt-chip mtk3329 devices on the market that have embedded flash, integrated antenna, that are smaller and way more sensitive than our ublox. Oct 15 09:47:57 n900 agps recently borked. not even supl.google.com did work anymore (supl.nokia.com been broken since quite some time), but it turned out it been a expired or messed up cert in N900 cert store Oct 15 09:48:26 DocScrutinizer05: have you seen http://www.u-blox.com/en/positioning-antennas/gnss-antenna-modules/uc530.html ? Oct 15 09:48:45 no, what's exciting about it? Oct 15 09:49:41 Very small and very sensitive at the same time Oct 15 09:49:49 nice Oct 15 09:50:24 Tracking: –165 dBm Cold start: –148 dBm Oct 15 09:50:41 I'd be already happy when the Option modules came with embedded LNA Oct 15 09:50:56 Heh Oct 15 09:51:16 building a LNA is kinda PITA Oct 15 09:51:59 I very much hope you'll finally find the way to fit some module in n900 case. Oct 15 09:52:00 a LNA module would actually be sth nice to find Oct 15 09:52:21 ooh, the fit is already solved Oct 15 09:52:48 we go completely bonkers and extend the case ;-P Oct 15 09:53:41 or - maybe - we just move the SIM tray a bit and cut a hole for it Oct 15 09:54:01 and dig a hole into PCB for the Option Oct 15 09:55:51 but we need a LNA to use the intergrated GPS which otherwise is really fine Oct 15 09:56:13 GPS&GLONASS combined Oct 15 09:56:31 just like the uBlox Oct 15 09:59:29 PCB holes are cheap Oct 15 09:59:45 actually I don't get it if uBlox uc530 is glonass and (us)gps combined. And it seems to provide no assisted mode, cold and warm TTFF 31s is a tad long Oct 15 10:00:16 TTFF of 31s is excellent when you have no supl data Oct 15 10:00:29 yes, that's what I say Oct 15 10:00:42 for a phone you want supl Oct 15 10:01:24 when you start an app that's location aware, user hardly wants to wait half a minute for it to warm up Oct 15 10:02:00 here: heat up Oct 15 10:02:22 http://www.gtop-tech.com/en/product/AGPS-Assisted-GPS/Software_Services_07.html they say they support mt3339 Oct 15 10:02:38 I've never used agps on my gta02 :/ Oct 15 10:03:32 ooh, and it doesn't support GLONASS Oct 15 10:05:47 then OTOH 45mW isn't too much Oct 15 10:06:20 Glonass meh, does it work anywhere? Oct 15 10:06:36 I'm not proposing that gps module for neo-n900 anyway :) Oct 15 10:07:35 well, it seems glonass is a nice supplementary to gps Oct 15 10:08:00 and 10mA is quite nice but too much to keep it always on Oct 15 10:08:01 I was just shocked when I saw such a tiny module with integrated antenna. Oct 15 10:08:12 hehe Oct 15 10:08:31 This one has some autonomous logging facilities. Oct 15 10:09:27 It's funny how ublox sells chinese MTK devices now :) Oct 15 10:09:29 yep Oct 15 10:09:42 hm, chinese devices? Oct 15 10:10:05 ooh I see Oct 15 10:10:21 you say it's based on mtk3339? Oct 15 10:11:36 Yes Oct 15 10:16:22 I don't get it why ublox doesn't support agps Oct 15 10:16:45 It should support agps, why do you think it doesn't? Oct 15 10:17:06 because of the 31s cold and warm TTFF Oct 15 10:18:32 That's unassisted case Oct 15 10:18:35 I think Oct 15 10:19:10 yes, that's why I think they don't offer / support A Oct 15 10:19:34 NB they state best case values Oct 15 10:20:27 though the gtop page says 41s is minimum for unassisted Oct 15 10:20:34 * DocScrutinizer05 is puzzled Oct 15 10:21:15 anyway I just tested N900 and it got a fix in 15s thru the closed window Oct 15 10:22:09 Great stuff, agps works. Oct 15 10:23:54 yeah, and on second test it took 1s Oct 15 10:24:09 to get 5 sats Oct 15 10:24:23 stored data Oct 15 10:25:12 the u530 seems incapable of either. And it's not what this module is made for. It's made to run 16h continuously Oct 15 10:29:38 I'm not so sure. uc530 stores data, so for 2 hours it should be able to get a fix really fast. Oct 15 10:30:07 And it's most probable that it supports agps too. Oct 15 10:41:12 datasheets says "no" Oct 15 10:42:07 err, it says nothing Oct 15 10:43:11 Receiver type MT3339 engine Oct 15 10:43:12 GPS L1 C/A, QZSS L1 C/A Oct 15 10:43:14 SBAS: WAAS, EGNOS, MSAS Oct 15 10:43:34 Acquisition Cold starts: 31 s Warm starts: 31 s Hot starts: 1 s Oct 15 10:44:32 it has backup voltage input, so it probably stores some data for "hot" Oct 15 10:44:50 dunno what's their definition of cold, warm, hot though Oct 15 10:46:48 protocols: NMEA, RTCM (whatever that means, does that include AGPS data upload?) Oct 15 10:47:39 well, this pamphlet doesn't give away a lot Oct 15 10:48:10 Mediatek, sigh :/ Oct 15 10:49:07 http://www.gizchina.com/2013/07/23/how-to-fix-poor-gps-on-mediatek-phones/ they seem to be able to use some assisted data Oct 15 10:50:15 how is that related? Oct 15 10:50:18 ftp://ftp.leadtek.com.tw/gps/9023/G-monitor%203.26/User%20Manual/EPO%20Format%20and%20Protocol/LEADTEK%20EPO%20Format%20and%20Protocol%20Reference%20Manual%20V1.0.pdf Oct 15 10:50:29 I'd guess all mediatek gpses to use the same protocol Oct 15 10:53:22 DocScrutinizer05: http://www.adafruit.com/datasheets/GlobalTop-FGPMMOPA6C-Datasheet-V0A-Preliminary.pdf here's data for the same MTK3339 chipset afaict. Oct 15 10:57:38 I don't expect a module to provide all capabilities of the chipset used Oct 15 10:59:18 e.g. only UC530M supports GLONASS Oct 15 11:00:19 http://www.u-blox.com/images/downloads/Product_Docs/UC530M_ProductSummary_%28FTX-HW-12002%29.pdf Oct 15 11:02:03 UC530M supports autonomous A-GPS, allowing a reductio nof the warm start TTFF by as much as 90%. Oct 15 11:03:01 Acquisition Oct 15 11:03:02 Cold starts: 23 s Oct 15 11:03:03 Aided starts: 3 s Oct 15 11:03:05 Hot starts: 1 s Oct 15 11:06:37 while IT530 comes without antenna, without GLONASS but with AGPS and some anit-jamming Oct 15 11:07:14 oops, withOUT AGPS Oct 15 11:07:35 err, what now? Oct 15 11:07:35 Hm, probably that's a firmware-only restriction? Oct 15 11:07:58 it says warm:31 but states it supports A-GPS??? Oct 15 11:08:40 weird Oct 15 11:08:45 ds-err Oct 15 11:08:55 http://www.u-blox.com/en/download/documents-a-resources/fastrax-gpsgnss-modules.html Oct 15 11:12:53 AHA and MAX-M5Q announces *concurrent* GPS and GLONASS Oct 15 11:13:13 and QZSS (whatever that is) Oct 15 11:18:22 funny enough it yields 3m CEP, while the 530 does 2(.5)m Oct 15 11:18:33 MT3333 Oct 15 11:24:00 actually if we hadn't the Option already, or when this one came with LNA built in... Oct 15 11:24:32 though 2.5mm is quite a statement Oct 15 11:25:09 not exactly trivial to integrate into Neo900 Oct 15 18:13:08 I am doing some work with exynos 4412's hardware encoder, but I can't find many sample code about it, I hear that xbmc support it but I can't find it in its git Oct 15 19:07:31 PaulFertser: funny stuff with ESSID **** ENDING LOGGING AT Wed Oct 16 02:59:58 2013