Saturday, 2013-12-14

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DocScrutinizer05I'm probably sounding dull, but could somebody point me to the API specs and docs of sensorfw? I tried to find them in google and git but seems I'm temporarily blinded03:58
specialDocScrutinizer05: is probably all there is04:00
DocScrutinizer05special: thanks04:06
DocScrutinizer05I looked there, it's pretty sparse04:06
specialwhat're you doing?04:07
specialgenerally you want to interact with QtSensors rather than sensorfw directly04:07
DocScrutinizer05trying to understand the design principles and API of sensorfw04:07
DocScrutinizer05I'm designing hw and I need to understand sw side's take on sensors to satisfy their needs or at least provide proper howto-use-the-hw04:08
lpotterheh.. its spaghetti04:08
DocScrutinizer05sonsors are a pretty broad and complex topic04:09
DocScrutinizer05sensors even04:09
lpotternot sure of API docs, I think someone removed them long ago04:09
DocScrutinizer05alas sysfs API is pretty specific and not unified for differnet sensor types or even builds of same type04:10
lpotterthere are example adaptors/sensors, etc in the example dir04:10
DocScrutinizer05I hoped for sensorfw coming up with a proper general purpose API to interface to sensors04:11
lpottersysfs is one way to access the sensors04:11
lpotterthere is the qt API for sensorfw, and then QtSensors as well04:11
DocScrutinizer05sysfs is basically only usable for a middleware like sensorfw, otherwise you get resource allocation and management collisions04:11
DocScrutinizer05for all but the most basic simple sensors04:12
lpotterand for fast sensors like accel and gyro, evdev is the way to go04:12
lpotteror, of course libhybris04:12
DocScrutinizer05I'm not interested in libhybris04:12
DocScrutinizer05evdev is fine for some sorts of sensors04:13
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DocScrutinizer05for most embedded sensors you got complex configuration and IRQ triggering in the sensor itself, and evdev doesn't help much with that04:14
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DocScrutinizer05basically accel for example is maybe fast (or at least should be) but not necessarily high-bandwidth04:15
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DocScrutinizer05e.g a freefall event happens only once a year, but then you want to receive an IRQ to handle that event in milliseconds04:15
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DocScrutinizer05so, to handle concurrent resource requests to same sensor, you generally need a smar middleware with a general purpose API04:16
DocScrutinizer05you don't want to poll an accel a year with 400Hz to detect that one freefall event in software - particularly when the sensor has means to detect the event in hardware and system may idle until event occurs04:17
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DocScrutinizer05you frequently need a middleware that coordinates and aggregates the resource requests from userland processes about sensor events the particular process is interested in. Then the middleware has to find the union set if configuration settings for the sensor that satisfy all those requests, set up the sensor accordingly, and in case handle IRQs from the sensor, analyze what cause triggered the IRQ and in turn send out the notifications to04:35
DocScrutinizer05the processes that requested for that particular event04:35
DocScrutinizer05s/set if/set of/04:36
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DocScrutinizer05I have an API spec that seems universal, comprehensive and flexible enough to handle a broad rage of sensors, from accel to GPS04:57
DocScrutinizer05I however hoped for such API spec already existing, and that's why I asked for the API spec of sensorfw04:57
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UninstallStskeeps: I can't understand the reason why glibc is failing on i58610:36
StskeepsUninstall: me neither10:37
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Uninstallwhat about this:10:39
UninstallTraceback (most recent call last):10:39
Uninstall  File "", line 379, in <module>10:39
Uninstall  File "", line 205, in main10:39
UninstallStskeeps: that traceback is missing in i48610:41
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UninstallStskeeps: bug 783912 in rpmlint "UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 44: ordinal not in range(128)" [Unspecified,Closed: errata]10:47
UninstallStskeeps: there is a patch for rpmlint, I would patch it10:49
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Stskeepslet's see..11:21
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StskeepsUninstall: that helped it14:01
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UninstallStskeeps: cool14:18
Stskeepswonder wtf it didn't show on i486..14:18
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Stskeeps@@$@ finally nailed the qmf build error15:23
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UninstallStskeeps: cool15:41
UninstallStskeeps: I've been spending some minutes on it me too15:42
UninstallStskeeps: what's the problem?15:42
MerbotDebian bug 667341 in qmf "gcc-4.7 can omit to list C++ templates as symbols" [Important,Open]15:42
* Stskeeps glares at merbot15:42
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UninstallStskeeps: cool15:45
Uninstallit's time for qt-mobility15:45
UninstallI dind't know this one -fno-inline-small-functions15:46
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UninstallStskeeps: I've found the problem with qt-mobility15:50
UninstallStskeeps: unistd.h shit15:51
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smokexUninstall: I thought all that stuff was fixed a few days ago?15:55
Uninstallsmokex: what you mean?15:56
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UninstallStskeeps: building and testing the patch for qt-mobility16:03
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UninstallStskeeps: parch to qt-mobility:,163016:19
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StskeepsUninstall: btw, good but old:
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cybrNauti noticed there is a tablet that runs on Mer... branded as Vivaldi.17:33
cybrNauthow about open *e-book readers*?  The Vivaldi (mentioned in /topic) is apparently LCD or LED17:33
cybrNauts/topic/#opentablets topic/17:34
Stskeepsvivaldi turned into Improv kinda17:36
Stskeepsbut i think vgrade hacked some e-ink readers17:36
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cybrNauti would love to have a PixelQI display on a tablet or netbook that runs Mer (or other FOSS OS)17:53
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artemmacybrNaut: well, YotaPhone runs Android and has eInk display. Runs Android -> can run Sailfish. Would that be good enough for you?18:00
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cybrNautguess i'm being unrealistic to expect to find a pixelQI device18:02
cybrNautbut I do want something bigger than a phone -- this would be for reading books.  so perhaps the kobo vgrade mentions is the best choice18:02
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UninstallStskeeps: leon is sparc, right?18:06
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UninstallStskeeps: yesteday I was talking with a guy from KDE that has been experimenting with aarch6418:07
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cybrNautartemma: YotaPhone does sound interesting apart from the fact that it's a phone18:07
artemmacybrNaut: yeah, I can see myself reading from a phone form factor, but not everybody can18:08
cybrNautGSM devices cannot be trusted... they all have a baseband OS, which puts the whole device under the control of phone carriers18:08
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cybrNautartemma: I could perhaps live with the small screen18:09
cybrNauti really hate baseband OSs18:09
cybrNautit is cool that the yotaphone has a dual-mode display (LCD and e-ink)18:10
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* artemma hopes for the otherhalf for jolla that would have eInk. You know, for boarding passes and book reading18:11
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UninstallStskeeps: cool paper18:12
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lbt_artemma: the airlines are way too stupid to let that work. The new BA android app is "secure" and won't let you download the boarding pass. Which means if you don't have connectivity at the gate/security you're screwed. (Well, "Screenshot" to the rescue!!)18:21
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artemmalbt_: I used at least several electronic boarding passes last year. Finnair I think was sending QR code in MMS message even18:22
lbtbut seriously the people who obviously approve the specs for the official apps are clearly sub-human morons.18:22
lbtFinnair were awesome ... plain SMS messages :)18:22
artemmathey used plain SMS, nowadays I think it's MMS. QR code is faster to scan than to type numbers from SMS18:23
lbtI still have the fake boarding pass which I wrote by hand in the notepad on the N900 once18:23
artemmaand I think I used some other airlines with downloadable passes too18:23
Uninstalllbt: lol18:23
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cybetteair baltic also had QR code boarding pass19:01
artemmatrying to replicate VERSION from .yaml to .pro from
artemmagetting <command-line>:0:2: error: macro names must be identifiers :/19:02
artemmaah! .yaml macros get to top level .pro only, not to subprojects of course19:03
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