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  • [00:52:14] <gary85> hi guys, does anyone know if a bootloader use for angstrom will work on android?
  • [00:53:26] <ds2> what basis do you have to even suspect that it will not work?
  • [00:55:27] <ds2> assuming the android port isn't using shoddy engineer i.e. pinmux in uboot...
  • [00:55:28] <gary85> well since kernels are going to be different, one my requiere certain address to load the kernel, I am just wondering..
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  • [00:59:17] <ds2> u-boot should be universal barring the silliness that I mentioned
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  • [01:03:23] <sotilrac> hi everybody
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  • [01:05:08] <gary85> ok.. I am getting started with beagle and I what I am want to do is have running the android version released by TI for zoom2, so I plan to use the u-boot from angstrom and try to configure the kernel to work on the beagle... I think it may be hard but I want to try it, any special suggestion ds2 or do u know if someone has already done something similar
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  • [01:12:12] <beagleboardfanof> trial
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  • [01:14:04] <ds2> Yes, I have gotten Android going on the BB myself
  • [01:14:16] <ds2> it was a trivial exercise and I just use whatever U-boot I had
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  • [01:17:42] <gary85> have you tried running the SNs running in your Android FS, doing some AV play back for example?
  • [01:18:25] <ds2> SNs? Serial Numbers?
  • [01:18:36] <gary85> socket nodes from TI in the dsp
  • [01:19:21] <ds2> no... didn't bother
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  • [01:20:28] <gary85> ok thanks for the info!
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  • [01:30:22] <tdh2002> who use smc911x?
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  • [03:03:33] <venkat> hey what is the interface between cam and OMAP
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  • [04:32:59] <puffpet> Hello is it possible to build a touchscreen tablet PC with beagleboard?
  • [04:35:02] <elvis_> Hello, I meet some error "omapfb: failed to allocate framebuffer" during the boot and nothing display on my LCD.
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  • [04:35:46] <elvis_> Does any botdy have idea about this?
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  • [05:10:59] <Sirisian> I asked this before. If you had an analog device and wanted to use it with a beagleboard is there an easy way to do that? Or using an analog to digital chip is there an easy interface for that?
  • [05:11:12] * kerute (~kerute@kerunix.com) has joined #beagle
  • [05:15:31] <ds2> yes
  • [05:15:44] <ds2> or the sound I/O
  • [05:16:25] <Sirisian> ds2, Where would they connect to on the beagleboard?
  • [05:16:37] <Sirisian> also I'm using the sound I/O for sound.
  • [05:17:01] <Sirisian> Trying to think how hard it would be to connect 3 ultrasonic sensors to a beagleboard.
  • [05:17:07] <ds2> the expansion connector
  • [05:17:24] <ds2> what does the ultrasonic sensors provide? a voltage for the distance or ?
  • [05:19:02] <trelane> Crofton, any chance you have one of your beagle boards around?
  • [05:19:17] <Sirisian> voltage based on distance 0 to 5v if I remember correctly
  • [05:19:22] <Sirisian> V*
  • [05:19:24] <Crofton> trelane, sorry out of town
  • [05:19:30] <trelane> Crofton, no worries
  • [05:23:51] <Sirisian> ds2, I don't understand the expansion connector. Would I need to find an analog to like I2C, I2S, or SPI?
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  • [05:26:01] <mru> the 4030 has some ADCs iirc
  • [05:27:05] <Sirisian> mru, pretend like I'm an idiot. (or don't pretend). I know what ADC is. What's 4030?
  • [05:27:41] <ds2> Sirisian: yes... a SPI ADC is probally the easiest
  • [05:27:46] <mru> the TWL4030 which is now TPS$longer_number
  • [05:27:48] <ds2> I2C is another possibility
  • [05:28:03] <ds2> IIRC, TPS69530
  • [05:28:14] <ds2> I2S is unsuitable for this purpose
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  • [05:38:38] <Sirisian> ds2, it looks like there's 28 little holes in the expansion slot. Can those be used anyway one wants? I guess I'm confused about that. I'm looking at things and it says SPI takes 4 lines unless a selector setup is used. So could I use that expansion slot to connect 3 ADC SPI devices?
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  • [05:46:54] <ds2> Sirisiaan: look at the BBSRM for which pins can do what
  • [05:47:15] <ds2> for many devices, an I2C ADC might be quicker
  • [05:47:39] <ds2> since the pins on the connector are 1.8V and you are likely to be needing a level translator unless you get a 1.8V device
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  • [05:48:31] <Sirisian> BBSRM?
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  • [06:19:22] <ds2> Beagle Board Software Reference Manaul
  • [06:19:29] <ds2> see www.beagleboard.org for the location
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  • [08:21:06] <thurbad> Is there a way to configure the kernel boot arguments from the SD card?
  • [08:21:37] <av500> boot.scr
  • [08:22:39] <thurbad> Is that just a text file? for some readon I got the impression that that was a binary from some stuff I read on after googling
  • [08:24:29] <_koen_> you run mkimage on a .txt file
  • [08:24:49] <_koen_> or use OE to do it with the angstrom-u-boot-scripts recipe
  • [08:26:54] <av500> _koen_: why not a simple text file?
  • [08:27:07] <thurbad> so I can call setenv directly from the boot.scr on the SD?
  • [08:27:27] <_koen_> av500: because uboot sucks
  • [08:27:46] <av500> fair enough
  • [08:28:23] <av500> as long as I dont have to type in "mkimage" format on the uboot command prompt...
  • [08:32:15] <ynezz> hm, I thought that boot.scr is some logo :p
  • [08:33:16] <av500> implement putpixel() in uboot and it can be....
  • [08:33:34] <thurbad> lol
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  • [08:34:11] <av500> actually there should be commands already to write to memory, no?
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  • [08:35:38] <lilly> how can i upgrade exixting any packages to latest version with resolving all dependencies
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  • [08:36:51] <thurbad> use opkg upgrade?
  • [08:37:26] <thurbad> should handle the dependencies for you
  • [08:39:32] <lilly> if suppose on beagle board i have gstreamer of verison 0.10.22 and i would like to upgrade to 0.10.25
  • [08:39:37] <lilly> what i need to do ?
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  • [08:41:36] <thurbad> is 0.10.25 available in the opkg repository?
  • [08:43:00] <thurbad> guess I'm presuming you're using angstrom...
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  • [08:44:57] <lilly> yes
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  • [08:46:49] <thurbad> to get the latest list of available packages and see what the gstreamer version is you can use: opkg update; opkg list |grep 'gstreamer'
  • [08:46:51] <lilly> if i browse gstreamer, latest version available is 0.10.25
  • [08:47:34] <thurbad> looks to me like 0.10.22 is the latest in the repository
  • [08:47:34] <lilly> and in my existing angstrom image gstreamer is of version 0.10.22
  • [08:48:21] <thurbad> you can download the sources and build them yourself if you really need that version
  • [08:49:03] <lilly> no 0.10.25 is available but from unstable feed
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  • [08:53:40] <XorA> dont mix stable/unstable it will cause pain
  • [08:54:09] * Openfree` (~Openfreer@116.228.88.98) Quit (Ping timeout: 252 seconds)
  • [08:54:46] <lilly> ok
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  • [08:55:40] <lilly> actually i want to use playbin2 plugin instead of playbin in totem media player
  • [08:56:32] <lilly> for that i need to upgrade totem movie player to 2.28 from 2.24 and for that it need gstreamer having version 0.10.25
  • [08:57:30] <_koen_> so build a new image with narcissus
  • [08:58:06] <lilly> i have built it from narcissus and it gives me of version 2.24
  • [08:58:34] <lilly> is there any way to upgrade to latest version in narcissus
  • [08:59:15] <lilly> from narcissus i can select only package name but not specific version
  • [08:59:45] <_koen_> totem 2.28.x is in the feeds that narcissus has configured as default
  • [09:00:52] <thurbad> good luck getting a download from narcissus.. I had nothing but trouble with it
  • [09:01:10] <lilly> _koen_ : if i select unstable image, will i get totem having version 2.28
  • [09:01:17] <_koen_> yes
  • [09:02:33] <lilly> Thank you every body. I just try to apply luck.
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  • [09:26:34] <hrw> morning
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  • [09:30:27] <av500> hrw: gm
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  • [10:37:27] <carltang> when i enable Device Drivers->Multimedia Devices->Video Capture Adapters->OMAP 3 Camera Suppor, the dsp test failed
  • [10:37:48] <_koen_> carltang: in 2.6.29?
  • [10:37:59] <_koen_> (and dsplink 1.61?)
  • [10:38:08] <carltang> From the following dmesg, it showed the program failed when the dsp register ISR:
  • [10:38:21] <carltang> Assertion failed ((isrObj!= NULL) && (ISR_InstalledIsrs [isrObj->dspId][isrObj->irq] == isrObj)). File : /root/work/workspace/OMAP3530/oe-kernel-2.6.29-r46/gstreamer_ti/dsp-oe/ti-dsplink-module-1613-r46a/dsplink_1_61_03/dsplink/gpp/src/../../gpp/src/osal/Linux/2.6.18/isr.c Line : 504
  • [10:38:34] <carltang> so I check the interrupt, found the camera module occupies irq 28 and irq 28. It seems the camera module and dsplink use the same interrupt number.
  • [10:39:03] <_koen_> carltang: the camera module also uses the in-kernel iommu driver which dsplink 1.61 doesn't like
  • [10:39:04] <carltang> yes the kernel is 2.6.29-r46
  • [10:39:12] * Openfree` (~Openfreer@116.228.88.98) Quit (Ping timeout: 252 seconds)
  • [10:39:12] <_koen_> dsplink 1.64 should have fixed that
  • [10:40:03] <carltang> dsplink is 1.61
  • [10:41:04] <carltang> thanks koen
  • [10:41:52] <_koen_> carltang: you could try adding this tree as a remote and build from that: http://dominion.thruhere.net/git/cgit.cgi/openembedded/log/?h=ti/staging
  • [10:42:10] <_koen_> carltang: that moves beagle to 2.6.32 and a more recent dsplink, codec-engine, etc
  • [10:42:30] <_koen_> or wait a week or 2 for it to get merged in to org.openembedded.dev :)
  • [10:43:46] <carltang> thanks very much
  • [10:44:01] <_koen_> np, it's my job :)
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  • [10:56:21] <hrw> _koen_: so you have stable .32 for BB?
  • [10:57:08] <_koen_> it survived the burn in test that I ran while sleeping
  • [10:57:28] <_koen_> b6, b6 + zippy, c3 + zippy, xm
  • [10:57:45] <_koen_> binaries are up at http://www.angstrom-distribution.org/demo/beagleboard/
  • [10:58:36] <_koen_> it's TI PSP 2.6.32 git + 32 patches
  • [11:00:27] <_koen_> the recipe: http://dominion.thruhere.net/git/cgit.cgi/openembedded/tree/recipes/linux/linux-omap-psp_2.6.32.bb?h=ti/staging
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  • [11:12:22] <thurbad> I wish connection manager would stop overwriting /etc/resolv.conf
  • [11:12:59] <av500> make it read only :)
  • [11:13:07] <thurbad> tried that
  • [11:13:27] <av500> isnt the purpose of conman to do that?
  • [11:15:16] <thurbad> dunno but the settings in connection manager don't seem to stick very long
  • [11:15:27] <thurbad> specifically for dns
  • [11:17:02] <thurbad> in some versions of linux connection manager only overwrites stuff when you actually run it.. in angstrom it overwrites every time you boot
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  • [11:23:58] <_koen_> thurbad: if you look more closely, you'll see /etc/resolv.conf is a symlink to tmpfs, which by its very nature won't survive reboots
  • [11:24:31] <thurbad> is that specific to Angstrom?
  • [11:24:36] <_koen_> (unless you build from narcissus, them it is a regular file pointing to opendns)
  • [11:25:47] <thurbad> thanks for the pointer, I'll try making it a regular file
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  • [12:15:55] <chakie_work> hi folks
  • [12:16:28] <chakie_work> been a while since i played with my beagleboard. time to do something fun with it, i guess
  • [12:18:04] <chakie_work> aha, bb is on gitorious now
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  • [13:31:55] <chakie_work> quiet here
  • [13:31:59] <buZz> ssst
  • [13:32:08] <buZz> :)
  • [13:32:39] <buZz> anyone got some advice on a level shifter for getting the I2C2 port connected to a Nokia 3310 LCD?
  • [13:33:07] <av500> check ml archives
  • [13:34:01] <buZz> ml?
  • [13:34:20] <av500> mailing list
  • [13:34:25] <buZz> mailing list gotcha
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  • [13:36:51] <hazamin> What is difference between using mkfs and mkimage for creating filesystem?
  • [13:37:48] <buZz> man, i wished these chips were available in bigger sizes :)
  • [13:37:58] * florian (~fuchs@Maemo/community/contributor/florian) Quit (Remote host closed the connection)
  • [13:38:03] <buZz> hazamin: mkimage does not create a filesystem
  • [13:38:22] <av500> diff `man mkfs` `man mkimage`
  • [13:38:39] <av500> buZz: even bigger?
  • [13:38:58] <buZz> av500: well, in through-hole parts
  • [13:40:04] * av500 remembers the holes that the parts always fell through...
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  • [14:05:48] <hazamin> if mkfs.jff2 creates an image file, then why we need mkimage?
  • [14:06:07] <Stskeeps> for uboot packaging
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  • [14:25:16] <naruto> none of the sources have beagle board in stock
  • [14:25:27] <naruto> any more sources for Rev C4
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  • [14:57:25] <sakoman_> _koen_: the new libgles-omap3 recipe seems to create a bogus *.desktop for me (in addition to all the proper demo desktop files)
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  • [14:58:23] <_koen_> sakoman_: yes, I haven't figured out why it is doing that
  • [14:58:45] <sakoman_> it wasn't immediately obvious to me either
  • [14:59:17] <sakoman_> just wanted to make sure it wasn't "just me"
  • [14:59:46] <_koen_> _roger_ also complained about it :)
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  • [15:03:15] <Antibore> I'm trying to use EM28xx based video capture device with beagleboard. When I try cat /dev/video0, I get error message "unable to allocate 115680 bytes for transfer buffer 4" "cat: /dev/video0: Cannot allocate memory". Has someone any suggestions I could try?
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  • [15:28:13] <av500> Antibore: try to stay on irc longer
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  • [15:54:37] <mobidev> hi to all
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  • [16:01:22] <GeneralStupid> Can anyone help me with my USB LAN Stick? sometimes debian forgets that its there -> http://pastebin.com/SVvPizjZ
  • [16:02:00] <av500> otg? ehci? rev?
  • [16:02:22] <prpplague> av500: greetings
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  • [16:03:02] <av500> prpplague: hello
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  • [16:12:37] <_koen_> prpplague: http://www.flickr.com/photos/koenkooi/4389418329/
  • [16:12:45] * prpplague looks
  • [16:13:07] <_koen_> prpplague: I do wish I had 2 headed standoffs, this involved cutting some nylon screws :)
  • [16:13:10] <av500> _koen_: need a 6+6 pack pls
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  • [16:13:39] <_koen_> If I had more nylon screws it would have have 4 beagles + 4 zippies
  • [16:13:42] <prpplague> _koen_: hehe cute
  • [16:14:14] <_koen_> note the green PCB :)
  • [16:14:26] <prpplague> _koen_: yea that was the pre-production board?
  • [16:14:33] <_koen_> yep
  • [16:16:53] <av500> _koen_: send me at least the crumble
  • [16:17:05] <_koen_> that's all gone
  • [16:17:13] <av500> emerge more
  • [16:17:24] <_koen_> I do have a cheesecake that is stiffening up in the fridge
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  • [16:49:05] <GeneralStupid> av500: c3
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  • [16:57:41] <hrw> koen: nice
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  • [17:00:20] <hrw> koen: you are using zippy serial ports?
  • [17:00:38] <_koen_> nope
  • [17:03:57] <kerute> _koen_, what is the use of having them stacked ?
  • [17:04:32] <av500> less space
  • [17:04:33] <hrw> kerute: less space?
  • [17:04:56] <hrw> I am wondering on redesigning my extension board to have it handle two BB
  • [17:05:15] <kerute> but are they connected in any way ?
  • [17:05:23] <av500> screws
  • [17:06:09] <_koen_> space saving and the boards don't flail around when using stiff cables (e.g. hdmi, cat6)
  • [17:06:34] <hrw> which starts to be a problem when many BB are in use
  • [17:06:37] <kerute> :) i mean like usb/network/... ? are they working together as one ?
  • [17:06:38] <_koen_> cat6 is overkill for 10Mbit eth
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  • [17:06:50] <prpplague> _koen_: rusty and i had talked about making some sort of connector board so you could stake 4 beagles
  • [17:06:53] <kerute> ah ok
  • [17:06:54] <hrw> _koen_: use modem cables
  • [17:07:34] <_koen_> prpplague: after watching too much buffy the vampire slayer?
  • [17:07:45] <prpplague> _koen_: hehe
  • [17:07:58] <prpplague> _koen_: we just throw around ideas alot
  • [17:08:29] <_koen_> but staking boards?
  • [17:09:11] <_koen_> I would have though you texams would use silver bullets instead of wooden stakes
  • [17:10:30] <kerute> do anybody knows if the beagle board sold on digikey.ca is the rev c4 ?
  • [17:10:36] <mru> it is
  • [17:10:50] <_koen_> prpplague: some kind of riser for musb, +5v and serial would be nice to implement some kind of beagleblade
  • [17:10:52] <hrw> kerute: digikey sells only latest version
  • [17:11:29] <prpplague> _koen_: yea that was kind of what we had in mind
  • [17:11:46] <prpplague> _koen_: we held off on doing any prototypes since we didn't know what was going to happen with XM
  • [17:11:58] <_koen_> the XM is in flux
  • [17:12:35] <kerute> thanks for your answers
  • [17:12:44] <hrw> again - what are diffs between C4 and XM?
  • [17:12:48] <_koen_> the P7 I have is already obsolete
  • [17:12:49] <av500> cpu
  • [17:13:08] <_koen_> hrw: different SoC, more ram, no nand, 4 usb ports, ethernet
  • [17:13:23] <_koen_> camera interface
  • [17:13:32] * _koen_ stabs v4l2 linux drivers
  • [17:13:38] <hrw> _koen_: which soc?
  • [17:13:43] <hrw> l138?
  • [17:13:47] <av500> dm37xx
  • [17:13:48] <_koen_> DM37xx
  • [17:14:10] * av500 notes that pressing shift takes away valuable microseconds...
  • [17:14:16] <_koen_> and is has a serial port instead of header
  • [17:14:31] <hrw> you mean 'it has db9 instead of header'?
  • [17:14:39] <_koen_> yes
  • [17:14:45] <av500> hrw: they want to silence this irc channel....
  • [17:14:59] <_koen_> female db9
  • [17:15:32] <av500> and drive nullmodem manufacturers out of business...
  • [17:15:51] <hrw> _koen_: female db9??
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  • [17:16:12] <hrw> _koen_: at least you will add 1.8m serial cable for board?
  • [17:16:21] <_koen_> yes, I can plug my serialusb dongle straight into it
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  • [17:16:38] <hrw> I have ~10 serial cables at home but only 1 straight one
  • [17:16:40] * _koen_ uses a 4m usb extension cord
  • [17:16:43] <hrw> and one male-male
  • [17:16:54] <hrw> koen: my desktop has 7 normal serial ports
  • [17:16:56] <av500> hrw: I have tons of straight ones :)
  • [17:17:00] <_koen_> I have >20 nullmodem cables and I can't find my straight one
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  • [17:17:28] <hrw> so far I have just 2 devices with female db9 socket
  • [17:17:42] <hrw> and one with rj-45 serial socket but it cames with serial cable
  • [17:18:04] <hrw> have a nice rest of day
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  • [17:20:41] <kerute> what is the height of the beagle board ? the manual says TBM but i dont know what it means
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  • [17:21:45] <av500> to be measured
  • [17:22:46] <kerute> ah ok thanks, i couldnt guess the 'measured' :)
  • [17:22:56] <kerute> anybody has measured it ? :)
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  • [17:25:10] <cwillu_at_work> kerute, want me to grab a micrometer and a beagle?
  • [17:25:35] <cwillu_at_work> kerute, which revision are you using, and are you putting a battery on it?
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  • [17:27:36] <cwillu_at_work> gah, somebody stole the metric meter :(
  • [17:28:19] <av500> use the imperial
  • [17:28:22] <cwillu_at_work> I am
  • [17:28:41] <cwillu_at_work> my beagles are all <0.700" from the top of the svideo port to the bottom of the tallest solder point (conveniently also on the svideo port)
  • [17:28:51] <cwillu_at_work> the backup battery is taller than that though, give me a sec
  • [17:30:42] <kerute> cwillu_at_work, im not using any for now
  • [17:30:54] <kerute> i just wanted to know about the size before buying it
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  • [17:31:03] <kerute> the first information is perfect
  • [17:31:05] <cwillu_at_work> 0.732" with the battery
  • [17:31:05] <kerute> thanks a lot
  • [17:31:19] <cwillu_at_work> although the battery will vary depending on how you solder it on
  • [17:31:34] * cwillu_at_work puts away the imperial micrometer
  • [17:32:27] <cwillu_at_work> you know, measuring things off an lcd screen with a micrometer isn't as easy as it looks
  • [17:32:44] <cwillu_at_work> (j/k)
  • [17:34:16] <buZz> hehe
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  • [19:55:40] <Josh> hi all, i have a general embedded/linux question, is anyone familiar with configuring wpa_supplicant to roam to different APs at specific signal levels?
  • [19:56:45] * Guest32219 (~hitokiri@41.5.138.69) has joined #beagle
  • [19:57:09] <prpplague> Josh: there is some support in wpa_supplicant for that, but it isn't very robust
  • [19:57:47] <prpplague> Josh: in the past i've had to hack up drivers and optomize them specifically for doing aggressive roam
  • [19:57:50] <prpplague> roaming
  • [19:58:51] <Josh> would you say wpa_supplicant is aggressive enough to jump to a different AP (same BSSID) if the signal level fell to 20-30%
  • [19:59:05] <_av500_> Josh: look into the source, no?
  • [19:59:56] <bgamari_> I have an expansion board which causes the beagle to reset
  • [20:00:11] <Josh> sure but i thought i would ask the experts for a quick answer, not too wifi savy
  • [20:00:15] <bgamari_> The 1V8 line goes to ground when I plug it in
  • [20:00:21] <prpplague> bgamari_: doh
  • [20:00:28] <bgamari_> prpplague: Yep
  • [20:00:34] <bgamari_> I can't figure it out for the life of me
  • [20:00:47] <bgamari_> There are still lights on on the beagle
  • [20:00:51] * hrw is now known as hrw|gone
  • [20:01:03] <bgamari_> Namely PWR
  • [20:01:22] <prpplague> bgamari_: yea but i suspect the current load is probably pretty high
  • [20:01:35] <bgamari_> Yet I can apply power to my board with an external DC power supply without an issue
  • [20:01:39] <bgamari_> prpplague: Possibly
  • [20:01:41] <prpplague> bgamari_: i think i still have your schematic handy
  • [20:01:44] * prpplague goes to check
  • [20:01:48] <bgamari_> Nothing's getting warm though
  • [20:02:30] <bgamari_> It's almost like I'm pulling nRESET down or something
  • [20:02:54] <bgamari_> The draw is quite reasonable when powered from my external supply
  • [20:03:22] <bgamari_> I've been thinking of trying external power while hooked up to the beagle
  • [20:03:33] <bgamari_> but that seems like a possibly very bad idea
  • [20:05:51] <prpplague> bgamari_: i'd remove R4, R5 and C7 first
  • [20:06:01] <prpplague> bgamari_: and retest
  • [20:07:15] <bgamari_> alright, one sec
  • [20:08:42] <bgamari_> In fact, it's only the 1V8 line that goes low
  • [20:08:49] <bgamari_> 5V stays on
  • [20:09:01] <prpplague> bgamari_: yea
  • [20:09:05] <bgamari_> which is the same behavior the board exhibits if you bring nRESET low
  • [20:09:53] <bgamari_> yet there seems to be open circuit between GND and nRESET
  • [20:09:58] <bgamari_> Why R4 and R5?
  • [20:11:31] <prpplague> those disconnect the LED's from the power
  • [20:12:13] <prpplague> bgamari_: you assembly the board yourself by hand?
  • [20:19:04] <bgamari_> prpplague: Yeah
  • [20:19:21] <bgamari_> prpplague: There is some flux residue by the expansion connector
  • [20:19:31] <prpplague> bgamari_: did you re-test with those components removed?
  • [20:19:43] <bgamari_> C7 was actually already removed
  • [20:19:53] <bgamari_> I don't think it's the LEDs
  • [20:20:34] <bgamari_> It draws less than 10mA on the 1V8 rail according to my voltage source
  • [20:20:50] <bgamari_> However, the resistance from GND to nRESET is on the order of 500kohms it seems
  • [20:20:58] <bgamari_> would that be enough to draw that line down?
  • [20:21:39] <bgamari_> oops, never mind
  • [20:21:45] <prpplague> bgamari_: found it?
  • [20:21:47] <bgamari_> that was my skin which was around 500kohms
  • [20:21:55] <prpplague> bgamari: ahh
  • [20:21:56] <bgamari_> nope
  • [20:22:10] <bgamari_> not yet
  • [20:22:20] <prpplague> bgamari_: well i suspect you have some sort of logic error, i.e. pin numbering backwards or something
  • [20:22:27] <bgamari_> bah
  • [20:22:30] <prpplague> bgamari_: how many boards did you get made?
  • [20:22:32] <bgamari_> yeah, I'm afraid you might be right
  • [20:22:34] <bgamari_> 5
  • [20:22:43] <bgamari_> only have enough (sampled) parts for one though
  • [20:22:47] <prpplague> bgamari: do you have one that is un assembled?
  • [20:22:50] <bgamari_> yep
  • [20:22:56] <bgamari_> only assembled one so far
  • [20:23:00] <prpplague> bgamari_: solder just the header on the board and nothing else
  • [20:23:10] <prpplague> bgamari_: plug it into the board and see if you have the same problem
  • [20:23:49] <bgamari_> alright
  • [20:23:50] <bgamari_> one sec
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  • [20:31:25] <bgamari_> bah
  • [20:31:29] <bgamari_> nope
  • [20:31:38] <bgamari_> the board survives
  • [20:31:44] <bgamari_> with no components
  • [20:33:02] <bgamari_> prpplague: Any other ideas?
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  • [20:33:11] <bgamari_> Anyone know exactly how the REGEN pin works?
  • [20:33:18] <bgamari_> The manual is pretty vague
  • [20:36:54] <bgamari_> I'm going to try soldering one of the level shifters on this new board and see what happens
  • [20:37:09] <prpplague> bgamari_: the regen signal is from the twl4030 and controls the startup of external power supplies
  • [20:37:25] <bgamari_> It's strictly an output?
  • [20:37:53] <prpplague> bgamari_: correct
  • [20:38:11] <bgamari_> hmm
  • [20:38:26] <prpplague> bgamari_: i'd solder on the power leds first
  • [20:38:31] <bgamari_> alright
  • [20:38:36] <bgamari_> Easy enough
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  • [20:50:22] <bgamari_> prpplague: well, LEDs seem fine
  • [20:50:53] <bgamari_> level shifters next
  • [20:51:16] <prpplague> bgamari_: do one and retest
  • [20:51:41] <bgamari_> certainly
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  • [20:56:23] <bgamari_> LS1 works
  • [20:56:43] <bgamari_> In hindsight, I suppose it was pretty naive to believe that everything would just work on plugging it in
  • [20:58:36] <prpplague> bgamari_: welcome to the wonderful world of board bringup
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  • [21:33:44] <bgamari_> prpplague: Found it!
  • [21:33:49] <bgamari_> prpplague: It's the large filter capacitor
  • [21:33:54] <bgamari_> or at least that's one of the issues
  • [21:33:59] <bgamari_> I just added it on my new board and now I can reproduce the issue on both
  • [21:34:07] <bgamari_> It's a 220uF cap between 5V and GND (C10)
  • [21:34:11] <bgamari_> too much current rushing in to charge the cap?
  • [21:34:53] <prpplague> bgamari_: yea probably
  • [21:35:00] <bgamari_> what do I do about that?
  • [21:35:24] <prpplague> bgamari_: just leave it off for the momment
  • [21:35:26] <bgamari_> If I had known while designing the board I guess I could have added a resistor to slow things down
  • [21:35:30] <bgamari_> alright
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  • [21:38:16] <bgamari_> huh, weird
  • [21:38:30] <bgamari_> So I removed C10 from my first board
  • [21:38:51] <prpplague> bgamari_: and?
  • [21:38:55] <bgamari_> but not C11, which is also quite large and on the 5V line, and it works
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  • [21:39:20] <bgamari_> I don't understand why C10 would matter and yet C11 wouldn't
  • [21:39:27] <bgamari_> I was expected to take both off
  • [21:39:48] <bgamari_> Oh, oops
  • [21:40:07] <bgamari_> I guess C11 is between the two 5V planes, never mind
  • [21:40:31] <bgamari_> so what do I do about C10?
  • [21:40:41] <bgamari_> I guess I can try a smaller value
  • [21:42:32] <prpplague> bgamari_: generally for the bypass/filter caps you use 0.1uF and 10uF which are usually enough to filter out basic noise
  • [21:42:41] <bgamari_> cool
  • [21:42:50] <bgamari_> I just replaced it with a 47u and it still works
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  • [22:16:48] <ds2> Morning
  • [22:20:18] <_av500_> hi ds2
  • [22:20:27] <bgamari> prpplague: How clean would you expect a 25MHz clock to appear on an oscilloscope?
  • [22:20:46] <_av500_> depedns on clock and scope
  • [22:21:02] <bgamari> bah
  • [22:21:32] <bgamari> I can see the eight cycles I expect to see
  • [22:21:39] <bgamari> but the levels are strange
  • [22:22:08] <bgamari> The first cycle rises from low to high
  • [22:22:25] <bgamari> but then only goes half-way back down to low in between the first and second cycle
  • [22:22:40] <bgamari> the second peak doesn't go high all the way
  • [22:24:15] <bgamari> I'll have an image in a second
  • [22:24:30] <bgamari> I'd appreciate it if someone would have a look
  • [22:24:44] <bgamari> It's a strange pattern
  • [22:25:31] <_av500_> ac vs dc couplingg?
  • [22:25:53] <bgamari> Unfortunately no, I've checked the scope settings
  • [22:26:33] <ds2> what speed of scope and what kind of probe?
  • [22:26:48] <ds2> a 25MHz square wave on a 20MHz scope ain't going to look too good
  • [22:26:49] <bgamari> 100 MHz
  • [22:26:55] <bgamari> Unfortunately no probe
  • [22:27:05] <bgamari> just grabber
  • [22:27:12] <ds2> you might be loading things a bit if you are directly connecting to the 50ohm input
  • [22:27:17] <ds2> try a 10x probe
  • [22:27:31] <ds2> I am assuming you are messing with the LCD clocks
  • [22:27:37] <bgamari> SPI
  • [22:28:15] <ds2> 1.8V or beyond a level shifter?
  • [22:28:34] <bgamari> behind a level shifter
  • [22:28:38] <bgamari> shifting up to 5V
  • [22:28:58] <ds2> which level shifter?
  • [22:31:03] <bgamari> MAX3390
  • [22:31:40] * ds2 looks at datasheet
  • [22:31:52] <bgamari> The clock should actually be only 10MHz I think
  • [22:33:44] <bgamari> Well, with a proper probe things now just look lumpy
  • [22:33:48] <ds2> do you have adaquet bypassing?
  • [22:33:59] <ds2> lumpy might be okay
  • [22:34:10] <ds2> can you pastebin a scope shot?
  • [22:34:17] <bgamari> 0.1uF on everything
  • [22:34:19] <bgamari> sure
  • [22:34:52] <ds2> haven't used the maxim part myself so donno if there are specific gotchas
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  • [22:37:27] <bgamari> ds2: http://mw0.mooo.com/~ben/TEK0001.JPG
  • [22:38:06] <ds2> it looks loaded down
  • [22:39:00] <bgamari> that is with a probe
  • [22:39:10] <ds2> bgamari: there seems to be too much capacitive loading somewhere
  • [22:39:19] <bgamari> http://mw0.mooo.com/~ben/TEK0000.JPG
  • [22:39:25] <bgamari> that was without
  • [22:39:33] <bgamari> although that probably doesn't do you too much good
  • [22:39:36] <bgamari> hmm
  • [22:39:48] <bgamari> Odd
  • [22:39:50] <ds2> you got a lot of ringing w/o the probe
  • [22:39:54] <bgamari> I can't imagine where
  • [22:39:56] <bgamari> alright, yeah
  • [22:40:01] <bgamari> I suppose that makes sense
  • [22:40:16] <ds2> did you not say it should be about 10MHz?
  • [22:40:25] <bgamari> Should be, yet
  • [22:40:27] <bgamari> yep*
  • [22:40:38] <ds2> the signal looks like it is at 1MHz so either it is all being slurred together or you have some other problems
  • [22:40:52] <bgamari> 1MHz?
  • [22:40:53] <ds2> 1/(590nS*2) =~ 1MHz unless my math is broq
  • [22:41:07] <ds2> 590nS per division, right?
  • [22:41:17] <bgamari> I think 25MHz?
  • [22:41:24] <bgamari> 50ns per division
  • [22:41:28] <ds2> what's the timebase on the scope shot?
  • [22:41:35] <bgamari> period seems to be about 38ns
  • [22:41:40] <bgamari> so about 25MHz
  • [22:41:46] <ds2> Oh it is hte other number...then it is about 10MHz but you should see them in groups of 8 at least
  • [22:41:46] <bgamari> which might be the issue
  • [22:41:56] * prpplague is now known as prpplague_afk
  • [22:42:07] <bgamari> yeah, this is true
  • [22:42:15] <ds2> not enough resolution to really seperate out 25 vs 10MHz
  • [22:42:22] <bgamari> oddly enough, if I zoom out I see three groups like the one in that screenshot
  • [22:42:29] <bgamari> and I'm sending three characters
  • [22:42:30] <ds2> you sure you got the right pinmux settings?
  • [22:42:48] <bgamari> yeah, fairly certain
  • [22:42:53] <ds2> the SPI clock tops out at 48MHz so 8x10MHz or 8x25MHz is not possible
  • [22:43:17] <ds2> what's the 1.8V side look like?
  • [22:43:24] <bgamari> hmm, good question
  • [22:43:39] <bgamari> one sec
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  • [22:44:45] <bgamari> very yucky
  • [22:44:58] <bgamari> I currently have the probe in 1x
  • [22:45:15] <bgamari> 10x probes are generally active, right?
  • [22:45:21] <ds2> is your grown close to your pin or do you have a meter of ground wire?
  • [22:45:36] <ds2> No...10x's are passive...it is a resistive divider typically along with a comp. cap
  • [22:45:41] <bgamari> hmm
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  • [22:45:50] <ds2> s/grown/ground/
  • [22:45:58] <bgamari> It's pretty close
  • [22:46:04] <ds2> a bad scope ground or ground in general can cause odd issues
  • [22:46:16] <ds2> do this - disconnect your board and just probe the expansion connector
  • [22:46:26] <bgamari> alright
  • [22:47:08] <bgamari> TEK0002.jpg is the signal directly off the header (with the board still attached)
  • [22:47:55] <ds2> try it w/o the board
  • [22:48:00] <ds2> it still looks loaded down too much
  • [22:48:13] <ds2> either that or there is a slew rate issue somewhere
  • [22:49:37] <bgamari> I don't currently have resistors in series with the signal to reduce the slew rate
  • [22:49:48] <bgamari> so they are currently shorted
  • [22:50:03] <ds2> that's fine
  • [22:50:17] <ds2> I don't have resistors on my TSC interface either
  • [22:50:37] <ds2> the LCD can get touchy and can run faster so the resistors are more acting like a 3db pad
  • [22:52:00] <ds2> the other way is to remove the short and probe it at the connector if your board is perm. attached
  • [22:52:45] <bgamari> TEK0004 is the signal directly off the header with no board
  • [22:53:31] <ds2> 10x probe?!
  • [22:53:39] <bgamari> Nope
  • [22:53:40] <bgamari> 1x
  • [22:53:51] <bgamari> For some reason I get nothing when I flip the switch to 10X
  • [22:54:00] <bgamari> Even after adjusting the attenuation setting on the scope
  • [22:54:05] <ds2> check your pinmux
  • [22:54:21] <ds2> and are you SURE it is DC coupled?
  • [22:54:42] <ds2> i.e. do a sanity check by carefully probing a 5V source and see if shows a solid 5V line
  • [22:56:07] <bgamari> Do you remember what /sys node gives you the pinmux settings?
  • [22:56:18] <ds2> none
  • [22:56:20] <ds2> it is not in /sys
  • [22:56:57] <bgamari> yeah, 5V gives me the desired result
  • [22:58:00] <LearnIt> hello
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  • [22:59:14] <ds2> what is the pinmux setting you believe you have on this ball?
  • [22:59:19] <bgamari> ds2: I do recall there being a file that would give you the status of the pinmux
  • [22:59:31] <ds2> bgamari: what kernel?
  • [22:59:32] <bgamari> It should be McSPI3 CLK
  • [22:59:37] <bgamari> 2.6.32
  • [22:59:46] <ds2> oh the new stuff... that I donno
  • [22:59:57] <ds2> in that case, more reason to verify your pinmux
  • [23:00:22] <ds2> it is acting as if it wasn't a full totem pole driver
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  • [23:00:30] <bgamari> ahh
  • [23:00:57] <bgamari> but it is giving me a signal
  • [23:01:21] <ds2> an OD signal w/insufficient pull could look similar
  • [23:01:30] <bgamari> Does the pin mux allow you to select a pin mode independently of the signal used
  • [23:01:39] <ds2> yes
  • [23:01:46] <ds2> even conflicting ones ;)
  • [23:01:48] <bgamari> oh, wow
  • [23:01:49] <bgamari> ouch
  • [23:02:32] <ds2> pinmux routes and setups up the drivers on the balls. they are 2 seperate bit fields
  • [23:03:15] <bgamari> well, that makes things interesting
  • [23:03:47] <ds2> :D
  • [23:06:32] <bgamari> It's in debugfs
  • [23:06:34] <bgamari> omap_mux
  • [23:06:44] <ds2> that's the new pinmux code
  • [23:06:48] <ds2> the old one had none of that
  • [23:07:41] <bgamari> ahh, I've found it pretty useful
  • [23:07:42] <bgamari> anyways
  • [23:07:49] <bgamari> I believe this is the pin in question,
  • [23:07:50] <bgamari> OMAP3_MUX(SDMMC2_CLK, OMAP_PIN_OUTPUT | OMAP_MUX_MODE1),
  • [23:08:49] <ds2> let me dig out my stuff
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  • [23:10:36] <LearnIt> hey all
  • [23:10:44] <bgamari> sure
  • [23:10:49] <bgamari> LearnIt: hey
  • [23:10:56] <LearnIt> is there any way we can ping from beagle to windows vista machine
  • [23:11:15] <bgamari> g_ether
  • [23:11:20] <bgamari> (kernel module)
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  • [23:11:36] <LearnIt> how do i set my beagle boward to be in my lLAN
  • [23:11:37] <bgamari> you need the musb driver and g_ether
  • [23:11:44] <LearnIt> ??
  • [23:11:52] <LearnIt> how do i get that?
  • [23:11:58] <bgamari> Compile a kernel with them
  • [23:11:58] <ds2> bgamari: I have pull up enabled also
  • [23:12:14] <bgamari> Or your distribution's kernel may have them already
  • [23:12:24] <bgamari> ds2: hmm, despite the fact that it's in output mode?
  • [23:12:32] <bgamari> I guess I should read the pinmux documentation
  • [23:12:36] <ds2> bgamari: eh? that is not a valid question
  • [23:12:52] <ds2> pull ups are very common...even on outputs
  • [23:12:58] <ds2> esp. if it is an OD setup
  • [23:13:46] <bgamari> hmm, alright
  • [23:14:02] <bgamari> Not sure how to make the new mux code do that
  • [23:14:16] <ds2> OMAP_PIN_PULLUP maybe?
  • [23:14:23] <ds2> look for examples near it
  • [23:15:39] <bgamari> yeah, ctags is grinding away so I can find OMAP_PIN_OUTPUT's definition
  • [23:15:59] <ds2> it'll most likely be in arch/arm
  • [23:16:05] <bgamari> Arg]
  • [23:16:07] <ds2> probally plat-omap unless they moved it again
  • [23:16:15] <bgamari> There's only PIN_OUTPUT
  • [23:16:40] <bgamari> there is PIN_INPUT, PIN_INPUT_PULLUP, and PIN_INPUT_PULLDOWN though
  • [23:16:58] <ds2> PULL's should be independent of in or out
  • [23:17:03] <ds2> take I2C's dataline
  • [23:17:12] <ds2> it is OD/OC
  • [23:17:16] <ds2> but has a pull
  • [23:17:20] <bgamari> fair enough
  • [23:17:39] <bgamari> I'm just saying what I see in arch/arm/mach-omap2/mux.h
  • [23:18:00] <ds2> *nod*
  • [23:18:18] <ds2> this is the joy of playing with a bleeding edge kernel ;)
  • [23:18:41] <bgamari> http://lxr.linux.no/linux+v2.6.33/arch/arm/mach-omap2/mux.h
  • [23:18:43] <bgamari> heh, quite true
  • [23:19:02] <ds2> the old code was a bit ... uh... rustic... but it works
  • [23:19:04] <bgamari> I wonder if they intended for PIN_INPUT_PULLUP to simply be a shortcut
  • [23:19:09] <ds2> (despite what others in here say ;))
  • [23:19:22] <ds2> it all boils down to bits in a register
  • [23:19:23] <bgamari> Perhaps I should just try OMPA_PULL_ENA | OMAP|PULL_UP
  • [23:19:27] <bgamari> yep
  • [23:20:47] <bgamari> ds2: You pull up all of your SPI outputs?
  • [23:20:57] <bgamari> and your inputs float?
  • [23:21:11] <bgamari> Why should the pull-up be necessary
  • [23:21:37] <bgamari> standard output driver isn't strong enough?
  • [23:21:50] <bgamari> I don't know much about how these pin drivers work
  • [23:22:27] <ds2> I pull up everything :D
  • [23:22:40] <ds2> not sure why it is needed, that's just one difference
  • [23:22:52] <ds2> I know the SPI block is a bit screwy as the obvious settings does not work
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  • [23:23:01] <bgamari> hmm
  • [23:24:15] <ds2> I don't recall the details but I think mentioned on the list and on the channel so the logs would have it
  • [23:25:16] <bgamari> alright
  • [23:27:08] <bgamari> ds2: looks like this might be it, http://markmail.org/message/xpnfvtnprv2jayzq
  • [23:29:48] <ds2> that's it
  • [23:30:27] <ds2> but when it works, it works fine
  • [23:31:04] <bgamari> alright
  • [23:31:12] <bgamari> so I'll try pulling it up
  • [23:31:32] <bgamari> if only there was a way to try it without recompiling the kernle
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  • [23:32:12] <ds2> that is addressing the wrong audience... kernel recompiles are trivial as far as I am concerned
  • [23:32:34] <ds2> it almost like asking if there was a way to turn right in a car w/o touching the steering wheel with your hands :D
  • [23:33:20] <bgamari> heh
  • [23:33:22] <bgamari> fair enough
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  • [23:49:24] <bgamari> ds2: Arg, well, that didn't seem to help unfortunately
  • [23:49:34] <ds2> signal still looks to be the same?
  • [23:49:42] <bgamari> yep
  • [23:49:58] <ds2> are you well equiped with misc passives?
  • [23:49:58] <bgamari> is it possible that it is just a measurement artifact
  • [23:50:11] <ds2> not likely
  • [23:50:20] <bgamari> depends upon what you mean by misc
  • [23:50:35] <ds2> do you have any 1K resistors handy?
  • [23:50:40] <bgamari> yep
  • [23:50:59] <ds2> can you try this: put 1K between the SPI_CLK and GND and measure that signal on the scope
  • [23:51:12] <bgamari> I can't figure out what's wronng with this probe; the 10x settings seems to not work at all
  • [23:51:15] <bgamari> alright
  • [23:52:36] <bgamari> unfortunately it doesn't look too different
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  • [23:53:20] <ds2> okay, sanity check time
  • [23:53:32] <ds2> touch your probe the the scope's calibrate output... do you get nice square waves?
  • [23:54:22] <bgamari> yep
  • [23:54:41] <ds2> then that should eliminate the measurement issue
  • [23:54:41] <bgamari> exactly 5V, 1kHz
  • [23:55:14] <ds2> there is nothing left but the pinmux config
  • [23:55:29] <bgamari> quite true, the 10X thing still worries me, but at least 1X works fine
  • [23:55:33] <bgamari> I suppose that's try
  • [23:55:35] <ds2> I think they took out /dev/mem, otherwise....
  • [23:55:37] <bgamari> true*
  • [23:55:56] <bgamari> no no, /dev/mem is still there
  • [23:56:14] <ds2> thought that was slated to be removed
  • [23:56:26] <bgamari> well, hasn't been removed in 2.6.32
  • [23:56:28] <ds2> if that's the case, you can write up a program to read the registers in userspace
  • [23:56:31] <bgamari> apparently
  • [23:56:35] <bgamari> true
  • [23:56:48] <bgamari> alright, I guess I should probably do that
  • [23:56:56] <ds2> the other thing you could do is
  • [23:57:03] <ds2> reconfigure pin for GPIO
  • [23:57:26] <ds2> the write up a shell script or throw in a loop somewhere in the init code to flip the GPIO's around and then check for a square wave
  • [23:57:41] <ds2> if that works, repeat with the diag pins in the SPI block afteryou reset the pinmux
  • [23:57:41] <bgamari> Oh christ
  • [23:57:54] <ds2> it isn't that hard
  • [23:57:54] <bgamari> well, I might have just found something problematic
  • [23:58:15] <bgamari> The maximum frequency given in my board file is 48MHz
  • [23:58:27] <ds2> ?
  • [23:58:39] <bgamari> Although I guess it's pretty clear from those captures that the controller is in fact running at 25MHz
  • [23:58:49] <bgamari> 48MHz seemed high to me
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  • [23:59:05] <ds2> 48MHz is a limit from some internal clock
  • [23:59:20] <ds2> everything should be divided off that, IIRC... so 24MHz is likely candidate
  • [23:59:21] <bgamari> Although I guess there's no reason we should be seeing what we are seeing, even if it was clocked high
  • [23:59:25] <samway> real newbie question here: how do i install gcc on the beagleboard?
  • [23:59:57] <bgamari> ds2: No no, that is spi_board_info's max_speed_hz field