**** BEGIN LOGGING AT Mon Jun 30 03:00:00 2014
Jun 30 05:03:59 <Abhishek_> Hi all
Jun 30 05:13:23 <rseethamraju> Hey Abhishek_
Jun 30 05:16:53 <Abhishek_> rseethamraju: how's it going?
Jun 30 05:17:29 <rseethamraju> alexanderhiam: I added almost everything we discussed into spi.py
Jun 30 05:17:50 <rseethamraju> Abhishek_ good. What about you?
Jun 30 05:18:35 <Abhishek_> fine. Implemented the standard boilerplate in the sigrok bindings, some bugs to iron out
Jun 30 05:20:09 <Abhishek_> currently, the BBB freezes when I begin an acquisition from libsigrok :P
Jun 30 05:20:22 <rseethamraju> alexanderhiam: and added the example. Though I didn't do the interrupt setup yet. I'll do that later today.
Jun 30 05:21:03 <rseethamraju> I forgot to rename cshigh as csactive
Jun 30 05:21:24 <tridge> good afternoon
Jun 30 05:21:29 <rseethamraju> Abhishek_: you'll figure it out!
Jun 30 05:21:42 <Abhishek_> hi tridge
Jun 30 05:21:52 <tridge> vmayoral: you around victor?
Jun 30 05:27:47 <Abhishek_> rseethamraju: BTW, you still getting a 4sec lag?
Jun 30 05:28:59 <rseethamraju> Oh yes! We're trying openCV now because it only works with the Logitech C290 and not with anything else we've tried
Jun 30 05:29:09 <rseethamraju> Gstreamer that is
Jun 30 05:29:52 <Abhishek_> rseethamraju: C920 or C290?
Jun 30 05:31:34 <mranostay> 4 second lag for opencv?
Jun 30 05:31:49 <rseethamraju> 290
Jun 30 05:31:50 <vmayoral> Greetings
Jun 30 05:31:58 <rseethamraju> No for gstreamer
Jun 30 05:32:24 <rseethamraju> OpenCV I'm going to try today
Jun 30 05:32:51 <vvu> morning all!
Jun 30 05:33:12 <vmayoral>  good morning!
Jun 30 05:33:13 <Abhishek_> hello all
Jun 30 05:33:55 <vmayoral> tridge:ping
Jun 30 05:34:10 <rseethamraju> Hello
Jun 30 05:34:17 <tridge> vmayoral: hi, sorry, just dealing with outage on ardupilot.com
Jun 30 05:35:10 <vmayoral> tridge: no problem. Let me know if i can help with something
Jun 30 05:35:37 <tridge> vmayoral: while I'm waiting for wordpress to respond, might as well ask you some Qs :)
Jun 30 05:35:50 <tridge> your earle board, that has a mpu6k as well, right?
Jun 30 05:36:40 <vmayoral> tridge: yeap
Jun 30 05:36:53 <vvu> praveendath92|pc: ping
Jun 30 05:37:30 <tridge> vmayoral: with the recent spi fixes (semaphore and CS pins), does it now work correctly, or do you also see the high noise we see on the PXF ?
Jun 30 05:37:47 <praveendath92|pc> vvu: Pong
Jun 30 05:38:04 <praveendath92|pc> vvu: Just a min. I will be online from mobile.
Jun 30 05:38:10 <vvu> oki
Jun 30 05:38:16 <praveendath92|pc> PC running out of charge. No power.
Jun 30 05:39:35 <vmayoral> tridge: unfoetunately  i have not been able to try  it yet (eager to  do so) cause i've been travelling this weekend but as soon as i reach home i will. Will report back in the thread you created.
Jun 30 05:39:49 <tridge> ok, thanks
Jun 30 05:40:20 <tridge> i'm think the remaining problem is a hw issue on PXF, but if your board has it too then we'll need to rethink :)
Jun 30 05:40:34 <tridge> vmayoral: how far did you get with the LSM9DSO driver?
Jun 30 05:41:07 <vvu> praveendath92: one sec to look over github
Jun 30 05:42:17 <vvu> praveendath92: why didn't you fork the udlfb ?
Jun 30 05:44:09 <vmayoral> tridge: made it compile but never tried it. It might need a bit of extra work.
Jun 30 05:44:37 * Abhishek_ hopes jkridner will be here soon
Jun 30 05:45:26 <praveendath92> I just have a local copy.
Jun 30 05:45:43 <vvu> so now we can start including fb driver right ?
Jun 30 05:45:52 <vvu> comms working with no issue?
Jun 30 05:45:55 <praveendath92> Yep.
Jun 30 05:46:12 <praveendath92> Yes. I tested it well.
Jun 30 05:46:20 <vvu> perfect
Jun 30 05:46:23 <vmayoral> tridge: as soon as i finish the tests with the patches we applied (~ following 24 hours) i can get to work on it. Would that be fine?
Jun 30 05:46:28 <praveendath92> For long transfers too.
Jun 30 05:46:39 * vvu needs some coffee
Jun 30 05:47:01 <tridge> vmayoral: yes, thanks. If there is a hw fault the key Q is if its in one board or all PXF boards
Jun 30 05:47:13 <tridge> if in all then LSM9DSO will be the way to go
Jun 30 05:47:32 <tridge> vmayoral: you based the driver on the PX4Firmware lsm303d and l3gd20 drivers, right?
Jun 30 05:47:32 <praveendath92> vvu: Although we the source for udlfb, everything isn't entirely clear. Specifically the fb stuff.
Jun 30 05:47:45 <vvu> i will read today what you sent me
Jun 30 05:47:55 <vvu> ask ur questions here
Jun 30 05:48:00 <vvu> people know stuff for sure
Jun 30 05:48:09 <praveendath92> vvu: I found another one. That looks better.
Jun 30 05:49:01 <vvu> mail or like here :)
Jun 30 05:49:30 <praveendath92> I have it opened on pc.
Jun 30 05:49:45 <vvu> k
Jun 30 05:49:45 <praveendath92> I will send you.
Jun 30 05:50:02 <vmayoral> tridge: mmm no. I believe i started from some code for arduino i found. Will do so though
Jun 30 05:50:38 <tridge> vmayoral: I think the LSM9DSO is just a single pkg version of LSM303D and L3GD20
Jun 30 05:51:03 <tridge> vmayoral: one really key part to making it work reliably is the (undocumented) "disable I2C" cmds
Jun 30 05:51:58 <tridge> vmayoral:  see https://github.com/diydrones/PX4Firmware/blob/master/src/drivers/lsm303d/lsm303d.cpp#L644
Jun 30 05:52:26 <tridge> if you don't make those cmds on startup the chip will sometimes respond to SPI ops for other chips, thinking its I2C
Jun 30 05:52:52 <tridge> vmayoral: the l3gd20 has a similar bug
Jun 30 05:53:03 <tridge> presumably the LSM9DSO has both the bugs :)
Jun 30 05:53:36 <vmayoral> tridge: i see, thanks :).
Jun 30 05:54:10 <praveendath92> There isn't any specific question but I'm trying to get a basic idea of a fb driver structure.
Jun 30 05:54:20 <vmayoral> tridge: how would you like me to share the tests with the mpu6k? Would a screencast work for you?
Jun 30 05:54:29 <vvu> it's exactly lke a char driver
Jun 30 05:54:36 * vvu thinks so 
Jun 30 05:54:45 <Abhishek_> tridge: wouldn't asserting/deasserting that CS line help iron out that issue?
Jun 30 05:54:48 <praveendath92> CHAR driver ?
Jun 30 05:54:52 <tridge> Abhishek_: nope
Jun 30 05:55:07 <tridge> Abhishek_: its a real hw bug. Took us months to get ST to admit it
Jun 30 05:55:09 <vvu> and ur X session  mmaps the /dev/fb
Jun 30 05:55:11 <vvu> and then writes
Jun 30 05:55:18 <vvu> in the fb driver you have 2 buffers
Jun 30 05:55:23 <tridge> and as far as I know they still haven't documented it
Jun 30 05:55:43 <vvu> one that is drawn on the screen and another one to put all the data for a frame, when 2nd buffer is ready just swap. not to see flickering on the display
Jun 30 05:55:47 <vvu> i think it works like that
Jun 30 05:56:01 <tridge> vmayoral: a log file would be ideal. Look for logs/n.BIN for some n
Jun 30 05:56:06 <vvu> from what I remember from my OS course
Jun 30 05:56:20 <vmayoral> tridge: sure
Jun 30 05:57:02 <praveendath92> Swap or shift?
Jun 30 05:57:15 <Abhishek_> tridge: I see. their STM32 family had some strange DMA bugs which were uncovered, and they had a bad time getting it documented.
Jun 30 05:57:21 <vvu> shift sorry
Jun 30 05:58:17 <vvu> praveendath92: brb a bit, coffee and breakfast.
Jun 30 05:58:25 <praveendath92> Okiee. I will bw here.
Jun 30 06:14:53 * praveendath92_ is wondering if he is connected
Jun 30 06:15:48 <_av500_> good morning
Jun 30 06:24:38 <vvu> morning _av500_
Jun 30 06:39:17 <praveendath92|pc> vvu: http://linux-fbdev.org/HOWTO/index.html
Jun 30 07:26:41 <av500> praveendath92|pc: the udlfb should give you a working framebuffer, no?
Jun 30 07:26:59 <av500> praveendath92|pc: I mean, if you strip all the usb stuff from it and just pretent to connect, you should have an fb
Jun 30 07:27:08 <av500> then put your USB stuff instead
Jun 30 07:27:12 <praveendath92> Yes.
Jun 30 07:27:23 <praveendath92> I think so.
Jun 30 07:27:31 <av500> good
Jun 30 07:27:32 <av500> then do it :)
Jun 30 07:27:50 <praveendath92> But there is some initial sequence control and bulk messages
Jun 30 07:28:20 <praveendath92> To get EDID and other info about displayLink devices
Jun 30 07:28:21 <av500> as said, strip out their usb stuff
Jun 30 07:28:30 <av500> just use a fixed edid
Jun 30 07:28:33 <av500> 1024x768
Jun 30 07:29:12 <praveendath92> No reading on fb drivers at all.
Jun 30 07:29:18 <praveendath92> ?
Jun 30 07:29:32 <av500> reading?
Jun 30 07:29:58 <praveendath92> Yeah. The structure of a fb driver.
Jun 30 07:30:23 <praveendath92> Wondering if EDID is the only info required for the driver.
Jun 30 07:30:48 <praveendath92> I found another version of the driver.
Jun 30 07:31:12 <praveendath92> Much complex one. I think this is the official version.
Jun 30 07:31:46 <praveendath92> I forked it at https://github.com/praveendath92/udlfb
Jun 30 07:32:42 <praveendath92> I will try with stripping all the usb stuff from their driver and give it a go
Jun 30 07:34:03 <praveendath92> av500: Going for lunch. BRB. Will test it after lunch and let you know.
Jun 30 07:55:19 <av500> okie
Jun 30 07:57:34 <Abhishek_> av500: Have you worked with poll() for a char device?
Jun 30 07:58:29 <av500> not knowingly
Jun 30 07:59:03 <av500> but as usual, ask, dont ask to ask
Jun 30 07:59:23 <Abhishek_> k, sec
Jun 30 08:01:13 <Abhishek_> the problem I am facing is that poll waits for the events to happen accordingly but does not return POLLIN in the revents
Jun 30 08:04:22 <Abhishek_> this is causing problems with the sigrok bindings
Jun 30 08:07:32 <av500> you call poll on your driver?
Jun 30 08:07:51 <Abhishek_> yep, I added a poll function
Jun 30 08:08:34 <Abhishek_> av500: https://github.com/abhishek-kakkar/BeagleLogic/blob/master/beaglelogic-kernel-driver/beaglelogic.c#L756
Jun 30 08:10:48 <Abhishek_> the wait queue seems to work fine as events get fired but my application doesn't receive the POLLIN event so gets stuck
Jun 30 08:11:52 <Abhishek_> ah, the operation times out
Jun 30 09:47:43 <Abhishek_> hey panto, how does poll_wait actually work? I mean, does it wait for the wait queue to be woken up or returns immediately?
Jun 30 10:58:06 <jkridner> It doesn't seem there is any way for me to remember to attend a meeting at 1:30AM on Sunday night.
Jun 30 10:58:08 <jkridner> I thought it was going to be easy enough, but I was wrong.
Jun 30 10:58:40 <jkridner> gm Abhishek_
Jun 30 10:58:44 <jkridner> gm karki
Jun 30 10:59:00 <Abhishek_> hi jkridner, you weren't on hangouts too, otherwise I might have pinged you there to get you in
Jun 30 10:59:07 <alexanderhiam> jkridner: same here, not a very EDT friendly time
Jun 30 10:59:36 <jkridner> I was driving back from Madison, WI.
Jun 30 10:59:44 * vvu still blames this morning meeting for his lack of zZzZ
Jun 30 10:59:49 <jkridner> :(
Jun 30 10:59:54 <jkridner> minutes?
Jun 30 11:00:00 <jkridner> did meeting go forward?
Jun 30 11:00:25 <vvu> for the beagle display project praveendath92|pc started working on the framebufer driver
Jun 30 11:00:30 <Abhishek_> we had vmayoral and tridge today with us
Jun 30 11:00:40 <jkridner> alexanderhiam, panto, karki: can we try to move our meeting earlier this morning?
Jun 30 11:00:42 <vvu> usb communication works really fluent with large chunk of data
Jun 30 11:01:06 <jkridner> yeah, after I make a pretty big deal to tridge that I wanted more interaction. :(
Jun 30 11:01:29 <alexanderhiam> jkridner: I'm ready whenever
Jun 30 11:01:54 <jkridner> k, I think we can get Chris early. Just want panto and karki.
Jun 30 11:02:41 <Abhishek_> where's the event link for today?
Jun 30 11:15:01 <jkridner> https://plus.google.com/u/1/events/centobaobrs15u5d8fa39dvcfos
Jun 30 11:20:14 <Abhishek_> vvu: what did you have to do to get dev_dbg working?
Jun 30 11:20:33 <Abhishek_> echo 7 > /proc/sys/kernel/printk ?
Jun 30 11:23:16 <vvu> think so
Jun 30 11:23:22 <vvu> check debug levels in the kernel
Jun 30 11:31:07 <karki_> Ijkridner : hi
Jun 30 11:31:19 <karki_> * jkridner
Jun 30 11:31:21 <jkridner> hi karki_....
Jun 30 11:31:41 <jkridner> can you do the meeting in about an hour and a half?
Jun 30 11:31:49 <karki_> hangouts?
Jun 30 11:31:50 <karki_> ok
Jun 30 11:31:54 <jkridner> we have the g+ hangout going....
Jun 30 11:32:01 <karki_> right now?
Jun 30 11:32:09 <jkridner> it is going now....
Jun 30 11:32:12 <karki_> :o
Jun 30 11:32:17 <jkridner> but, Chris needs to take the train in.
Jun 30 11:42:47 <jkridner> panto: are you able to join the g+ hangout?
Jun 30 11:51:57 <vmayoral|pc> jkridner: greetings, catching up what has been discussed this weekend (was travelling). tridge and I made it today for the meeting. I'll be dedicating this week to addressing the IMU issues and enabling the LSM just in case. Will keep you posted.
Jun 30 12:18:00 <alexanderhiam> jkridner: we've left the hangout, not sure if it's still recording your blank screen
Jun 30 12:18:35 <alexanderhiam> jkridner: karki's down to just questions for Chris, so we can resume when he comes back online
Jun 30 12:59:01 <Abhishek_> panto: need some help with understanding how poll_wait works when you are back
Jun 30 13:03:35 <Abhishek_> panto: this thread has the same issue but the software developers are always redirecting to LDD book, and I am not really getting the expected behavior out of this.
Jun 30 13:03:43 <Abhishek_> http://comments.gmane.org/gmane.linux.kernel/186867
Jun 30 13:52:25 <Abhishek_> "The dog chasing it's tail" is how I would describe the bug that was in the poll() function causing my BBB to freeze :)
Jun 30 13:52:57 <Abhishek_> *its
Jun 30 14:03:28 <panto> someone pinged?
Jun 30 14:03:46 <panto> jkridner, sorry was on the road driving back
Jun 30 14:43:04 <Abhishek_> good evening panto
Jun 30 14:43:12 <panto> hi Abhishek_
Jun 30 14:45:36 <karki_> alexanderhiam : what happened to the meeting?
Jun 30 14:54:32 <jkridner> karki_: it got closed.
Jun 30 14:54:38 <jkridner> do I need to reopen it?
Jun 30 14:54:44 <jkridner> panto available now?
Jun 30 14:55:12 <jkridner> seems like panto's ping was almost an hour ago. :(
Jun 30 14:55:17 <jkridner> crazy day already here.
Jun 30 14:57:01 <karki_> yeah. tiring too :/
Jun 30 14:58:39 <panto> jkridner, yeah
Jun 30 14:58:46 <panto> I'm now here
Jun 30 14:59:13 <jkridner> alexanderhiam, panto, karki_: shall we do another quick chat and see if Chris is available too?
Jun 30 15:00:05 <karki_> I wouldn't mind :) but whats the agenda (other than the question or 2 I have)?
Jun 30 15:03:27 <jkridner> that'd be the agenda. :-)
Jun 30 15:04:38 <panto> I'm on the call
Jun 30 15:05:10 <jkridner> karki_: you joining?
Jun 30 15:05:35 <karki_> jkridner : sure :) one sec
Jun 30 15:06:57 <karki_> my net is a bit slow today :/ I'll join in a min
Jun 30 15:07:24 <jkridner> alexanderhiam: you still around?
Jun 30 15:13:34 <ds2> hmmm
Jun 30 15:16:53 <ds2> was there a Sunday mtg?
Jun 30 15:22:46 <Abhishek_> ds2: at 1130 your time
Jun 30 15:22:51 <Abhishek_> *2330
Jun 30 15:23:53 <ds2> You said monday
Jun 30 15:24:34 <Abhishek_> ds2: ah sorry, I meant 0130 EDT, or 2330 PST Sunday on your side
Jun 30 15:24:44 <ds2> which is 15hours from now
Jun 30 15:24:51 <ds2> Oh bah....it wraps that way
Jun 30 15:25:26 <Abhishek_> ds2: nvm, mranostay was there.
Jun 30 15:26:29 <Abhishek_> karki: Is the new hangout on a different link?
Jun 30 15:26:34 <ds2> 'k
Jun 30 15:26:41 <Abhishek_> karki_: ^
Jun 30 15:26:59 <ds2> always the weds one
Jun 30 15:28:20 <Abhishek_> ds2: btw, I am planning a BeagleLogic G+ hangout this week (with jkridner, you and mranostay) [I'll see if biot of the sigrok project can make it too as well] . Let me know your free slots
Jun 30 15:28:48 <ds2> I don't do G+.
Jun 30 15:29:36 <Abhishek_> are you available on Skype?
Jun 30 15:30:25 <ds2> nope.
Jun 30 15:30:43 <ds2> what's with the desire to abandon IRC?
Jun 30 15:31:03 <Abhishek_> ds2: the point is not to abandon IRC but supplement it
Jun 30 15:46:20 <Abhishek_> ds2: BTW, the kernel driver is in a usable state, I'm building on the sigrok bindings and it should be wrapped up this weekend
Jun 30 16:08:27 <mranostay> famous last words
Jun 30 16:42:07 <jkridner> Abhishek_: will you schedule it?
Jun 30 16:42:24 <Abhishek_> jkridner: Thursday?
Jun 30 16:42:30 <jkridner> k
Jun 30 16:42:40 <Abhishek_> lemme see if I can bring biot in
Jun 30 17:12:25 <Abhishek_> jkridner: expect sigrok bindings for BeagleLogic to be usable on Wednesday
Jun 30 17:12:36 <jkridner> cool!!!!
Jun 30 18:26:19 <Abhishek_> jkridner: sent out the invite
Jun 30 18:26:26 <jkridner> thanks
Jun 30 19:53:16 <Abhishek_> jkridner: I had captured a 1 GB logic dump of an I2S bitstream at 10 MHz (101 seconds of audio) a few days ago. I'm running libsigrokdecode on it, and am in the process of dumping the contents into a WAV file.
Jun 30 20:11:51 <Abhishek_> logic dump successful, sounds good
Jun 30 20:26:37 <jkridner> Abhishek_: awesome. 1GB, eh?
Jun 30 20:26:45 <Abhishek_> yep
Jun 30 20:26:46 <jkridner> compress/store real-time?
Jun 30 20:27:04 <Abhishek_> yep, using LZO to a 250 MB file
Jun 30 20:27:28 <jkridner> that's incredible. I'd expect better compression, but that is pretty good.
Jun 30 20:27:45 <Abhishek_> this was last week
Jun 30 20:28:03 <jkridner> I can just imagine people snooping I2S busses for exact digital audio copies.
Jun 30 20:28:37 <Abhishek_> I actually did, and ended up with a 100sec wave file that sounds "just like original"
Jun 30 20:29:04 <jkridner> Abhishek_: looking forward to the sigrok bindings and most forward to the HTML displays.
Jun 30 20:30:09 <Abhishek_> the HTML display is going to be toughest part of this entire project
Jun 30 20:31:12 <Abhishek_> I see a very bumpy ride ahead :P
Jun 30 20:33:28 <Abhishek_> summer break is almost over, I'll be back to university on 16th
Jun 30 20:33:39 <Abhishek_> ah, how time flies
Jun 30 22:32:10 <ds2> for those folks, you have internal encrypted I2S buses a-la the O4
Jun 30 22:32:12 <ds2> :D
Jun 30 23:57:05 <alexanderhiam> karki, jkridner, panto_: sorry I missed part 2, watching the video now
Jul 01 02:52:24 <anujdeshpande> vvu: tried out your bbblfs. works great so far :D thanks
Jul 01 02:58:32 <karki_> alexanderhiam : ping
**** ENDING LOGGING AT Tue Jul 01 03:00:01 2014