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  • [00:00:33] * Topic is 'http://beagleboard.org/chat has a guide on how to ask questions and links to the logs | never ask to ask, just ask | be patient | pastebin a boot log | http://ahsoftware.de/Beaglebone_Black_Boot_explained.svg | http://beagleboard.org/latest-images | http://beagleboard.org/Support/bone101 | direct bonescript/node.js questions to #beagle-bonescript | books: http://bit.ly/bbb-books'
  • [00:00:33] * Set by KotH!~attila@erica.kinali.ch on Wed Jul 15 13:55:07 UTC 2015
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  • [00:30:23] <yates`> i thought hardware levelling didn't work on the emif4d of the am335x. why is it being done in the u-boot initialization code here (line 45ff): http://ur1.ca/od2zd -> http://paste.fedoraproject.org/305562/48884145
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  • [00:34:42] <yates> yeah, i'm wondering that too..
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  • [01:09:18] <yates> got it.
  • [01:10:21] <yates> apparently there is a new version of the emif4d, major revision 5 (emif4d5) instead of revision 4 (what is supposed in the AM335x)
  • [01:12:49] <yates> i da' man.
  • [01:13:23] * yates does a MJ moonwalk...
  • [01:15:48] <yates> (that routine above was just called when the major revision of the emif is 5, otherwise a non-leveling initialization function is called)
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  • [01:17:34] <agmlego> The moonwalk routine?
  • [01:18:08] <yates> ha ha
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  • [03:06:33] <mranostay> ok dumb question. the grove connectors on the green are muxable right?
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  • [04:57:06] <wmat> mranostay: isn't everything? ;)
  • [04:58:19] * mranostay smacks wmat
  • [05:00:59] * wmat heehee
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  • [05:04:39] <Vishakh> hey.. I am planning to develop image processing applications on an embedded board. Is BBB suited for such applications?
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  • [05:09:34] <mranostay> heh i remember this channel now
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  • [05:22:44] <zauslande> Looked at a X15 on mouser last week and the delay increased and the price increased. BBB is looking better.
  • [05:23:11] <zauslande> I'm guessing that means a new board layout revision for the X15
  • [05:23:34] <veremit> as long as you don't want to do real-time .. or big images, BBB can do image processing lol
  • [05:23:44] <zauslande> Or time is slowing down because a black hole is orbiting our planet
  • [05:24:13] <veremit> last news on x15 was a new board spin was necessary after it failed FCC testing
  • [05:24:26] <veremit> expect more news late January
  • [05:24:33] <zauslande> Ah... sad that pushed the price out of reason.
  • [05:25:00] <veremit> price will always be ~$200 .. its not a 'cheap' arm board like all the others. its a Performance arm board.
  • [05:26:29] <veremit> there are a few options down the 'cheaper' end, depending what you wanna do
  • [05:26:47] <zauslande> $200 is fine... I saw a higher price on Mouser.... maybe it was a typo and they fixed it.
  • [05:27:05] <veremit> but if you really are serious about real-time video or MPEG encoding .. you want a video chip or dedicated video hardware
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  • [05:29:48] <veremit> I got GBP183 .. that's not too bad
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  • [05:30:17] <veremit> $260US
  • [05:30:56] <veremit> looks like they're being VERY conservative with delivery dates lol
  • [05:30:59] <veremit> wisely so
  • [05:31:29] <veremit> aside frm the fact it'll take CCo 12 months to spin up 900 boards lol
  • [05:32:38] <zauslande> $260 is over a threshold considering there are no capes/shields for it
  • [05:33:06] <veremit> its a brand new board. Even TI have little documentation on the processor
  • [05:33:20] <veremit> so until it gets out there .. nobody can make anything for it :p
  • [05:33:31] <zauslande> BBB will do what I need, maybe even an Arduino Tian... if they're become available.
  • [05:34:08] <zauslande> Yeah, they'll have to warm up the demand for 2017
  • [05:35:10] <veremit> some interesting new arduino's coming on line
  • [05:35:44] <veremit> pity about the Tre .. that looked like a good board combining the BBB with an arduino micro :/
  • [05:35:59] <veremit> hmm that reminds me ..
  • [05:37:29] <yates> where are the board IDs stored in the eeprom defined? e.g., what's the difference between A335BONE and A335BNLT ?
  • [05:37:47] <zauslande> Mouser says 26 weeks lead-time... is that really better than typing, "We have no idea when"
  • [05:38:15] <zauslande> one misspelled "bone"?
  • [05:38:33] <zauslande> less calories in the LT?
  • [05:39:52] <yates> zauslande: ha!
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  • [05:42:34] <yates> what about the new am88xx or whatever?
  • [05:42:35] <veremit> I suspect its for the different 'bone' boards
  • [05:42:44] <yates> veremit: brilliant!
  • [05:43:13] <veremit> bone-plain .. bone white .. bone black .. bone xm...
  • [05:43:38] <yates> yeah, i was asking for the exact mappings.
  • [05:43:38] <veremit> although the xm isn't the am335x
  • [05:43:43] <veremit> so .. that narrows it down
  • [05:44:29] <veremit> might need to track down jkdridner or one of the other sw guru's
  • [05:45:07] <yates> might be buried somewhere on this site: http://www.crashcourse.ca/wiki/index.php/U-Boot_on_the_BBB
  • [05:51:46] <yates> i'm trying to read the sdram initialization in u-boot and at a high level it determines initialization parameters based on this string.
  • [05:58:56] <yates> it says "bone_lt" - what's that?
  • [05:59:46] <ds2> mapping?
  • [05:59:52] <ds2> what mapping are you looking for?
  • [06:00:23] <yates> from eeprom board id to beagle board type
  • [06:00:37] <ds2> there are 4 boards produced by beagleBoard.org
  • [06:00:42] <yates> the on-board eeprom, not the one(s) on the cape(s)
  • [06:00:47] <ds2> xM/Classic do not use a eeprom.
  • [06:00:55] <ds2> BBB/BBW use a eeprom
  • [06:01:02] <yates> ok
  • [06:01:08] <ds2> they need different settings as one is DDR3 and other is DDR2
  • [06:01:12] <ds2> that's it.
  • [06:01:29] <ds2> the eeprom is an artifact of this being derived from the EVM
  • [06:01:42] <ds2> LT is the black
  • [06:02:04] <ds2> you can trivially bypass all that i2c stuff for a simplier u-boot
  • [06:02:25] <yates> here is the relevent code from uboot: http://ur1.ca/od3eu -> http://paste.fedoraproject.org/305611/51368920
  • [06:02:34] <yates> ds2: how did you know lt is the black?
  • [06:02:54] <ds2> because I been following this stuff
  • [06:03:18] <yates> oh, you mean tribal undocumented knowledge? wonderful!
  • [06:03:33] <ds2> and I have worked on projects using derivative boards
  • [06:03:36] <ds2> so I had to verify it
  • [06:04:03] <ds2> the other eeprom settings are not BeagleBoard.org products
  • [06:04:11] <ds2> they are other dev boards such as the EVM
  • [06:05:00] <yates> ds2: re: bypass: i am definitely interested in doing that very soon, but that's not my goal now, which is to basically parrot their sdram initialization into my own standalone assembly program to test out new board's sdram.
  • [06:05:04] <yates> right
  • [06:05:22] <yates> s/out/our/
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  • [06:05:38] <ds2> ah
  • [06:06:05] <ds2> I'd be very careful about just parroting it
  • [06:06:05] <yates> so how do you bypass it easily? i will need to do this next as we removed that eeprom
  • [06:06:19] <yates> ds2: why? doesn't it work?
  • [06:06:27] <ds2> replace the if() with the relevant stuff
  • [06:06:35] <ds2> it works but it may not be optimal
  • [06:06:43] <ds2> esp. if you don't have the exact same chips
  • [06:06:45] <yates> huh? if()?
  • [06:07:02] <yates> i believe it is the exact same.
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  • [06:07:06] <ds2> those inline functions are used in if (foo == true) { do this }
  • [06:07:14] <ds2> remove the if() and just keep the revelant do this parts
  • [06:07:26] <ds2> very useful if you are doing a fresh bring up w/o a programmed EEPROM
  • [06:07:28] <yates> oh, yeah, sure.
  • [06:07:46] <ds2> you can use it as a starting point but I'd verify it
  • [06:07:59] <ds2> I have seen stuff get lost going from vendor u-boot's and upstream
  • [06:08:14] <yates> ds2: why would there be any question of it if you assume it's the exact same DRAM?
  • [06:08:16] <yates> ah.
  • [06:08:39] <ds2> if you used hte original vendor u-boot, it should be fine... at least good enough
  • [06:09:23] <yates> well i was trying to rebuild the entire bbb debian distro from bb-kernel but kept running into walls. the idea was that the build process would grab and patch u-boot, and i would take it from there.
  • [06:09:42] <ds2> heheh... "good luck"
  • [06:09:53] <yates> why do you say that?!?
  • [06:10:11] <ds2> unless you are really limited in skills, debian is nothing but trouble for embedded stuff
  • [06:10:35] <ds2> Angstrom was the distro during development
  • [06:11:00] <yates> why? i've used it successfully on plain-jane bbb's before. works great.
  • [06:11:17] <ds2> to which part?
  • [06:11:41] <yates> it == debian
  • [06:11:47] <yates> to a bbb
  • [06:11:55] <yates> or maybe i don't get your question.
  • [06:12:20] <ds2> debian boots and runs like a desktop. it has a lot of stuff that is a pain to deal with for embeddeduse
  • [06:12:38] <ds2> i.e. a RO fs
  • [06:13:02] <yates> huh?
  • [06:13:20] <yates> i wrote logs using standard fwrite() no problem
  • [06:13:41] <yates> (actually it was the c++ equivalent, but still)
  • [06:13:56] <yates> RO = Read-Only?
  • [06:14:07] <ds2> no no
  • [06:14:20] <ds2> it is often desireable to keep flash RO in an embedded situation
  • [06:14:42] <ds2> debian makes it painful if it doesn't have a few areas taht are writeable
  • [06:14:47] <yates> you're not going to the "wear out your flash" argument, are you?
  • [06:15:14] <ds2> no, I am going to yanking hte power will corrupt things and then customer service will bankrupt you argument :D
  • [06:16:19] <yates> aha.
  • [06:16:22] <yates> i see.
  • [06:17:06] <yates> why does that happen? isn't it ext3 or ext4 fs?
  • [06:17:21] <yates> with journals and all to keep such corruption from happening?
  • [06:17:21] <ds2> it isn't perfect
  • [06:17:43] <yates> so it's the same with my desktop?
  • [06:17:53] <yates> i do backups, but that still makes me nervous..
  • [06:18:03] <yates> Linux localhost.localdomain 4.1.13-100.fc21.x86_64 #1 SMP Tue Nov 10 13:13:20 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
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  • [06:19:07] <ds2> I have had corruption on desktops
  • [06:19:23] <ds2> journals doesn't guarantee anything about lost data
  • [06:19:49] <ds2> esp. if the journal write is lost/corrupted so it goes back to a prior state w/o the journal entry
  • [06:20:24] <yates> yeah, i guess if saving state was critical, that would be a problem.
  • [06:20:56] <ds2> could be simple things like password change for the UI
  • [06:20:57] <ds2> :D
  • [06:21:25] <yates> yeah, but the chances? ...
  • [06:21:37] <yates> then there's always Murphy's law.
  • [06:22:52] <ds2> rather not have to explain things to irate customers if I can engineer out the risk
  • [06:23:05] <ds2> there is just no good reason to go with debian
  • [06:23:26] <yates> how about a package manager that has a whole crapload of stuff?
  • [06:24:04] <yates> i was building natively on that project.
  • [06:24:14] <yates> building the application, that is.
  • [06:24:37] <yates> and i needed stuff like the soci database C++ library
  • [06:24:54] <ds2> from a product standpoint that doesn't have much value
  • [06:24:58] <yates> yeah, i could've tarballed it, but apt-get socii is just so easy...
  • [06:25:15] <ds2> embedded stuff are fixed function
  • [06:25:32] <ds2> that's ignoring the quagmire of license issues
  • [06:25:33] <yates> how about troubleshooting?
  • [06:25:57] <yates> customer xyz has problem abc with your company's board. you ssh in to take a look.
  • [06:26:00] <ds2> if you got the resources to deal with the licensing issues... have fun.
  • [06:26:14] <yates> "damn, i need nmap, or ..."
  • [06:26:19] <yates> something not installed.
  • [06:26:43] <ds2> vs you ship something GPLv3 and have no idea where the corresponding source debian is
  • [06:26:51] <ds2> up the creek w/o a paddle
  • [06:27:26] <yates> licensing is another issue. i thought we were discussing purely engineering reasons.
  • [06:27:56] <yates> granted one i don't understand.
  • [06:28:21] <yates> yes, at some level you coudl call that engineering, yes yes yes....
  • [06:28:49] <ds2> providing sources is an engineering issue
  • [06:28:59] <ds2> if you donno where the sources, you are dead.
  • [06:29:07] <yates> sure, i know
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  • [06:29:35] <yates> they're in my tar/zipped bb-kernel i socked away for that release.
  • [06:29:54] <ds2> kernel is easy... it is all those damn packages
  • [06:31:24] <ds2> kernel, u-boot... that's all pretty universal esp. if you are doing your own HW. you KNOW what is going on cuz you worked on it
  • [06:31:48] <yates> what packages do you need in the embedded app proper? i guess i gave one example earlier: socii c++ library. but i don't see a bunch of those being required for the actual application. am i wrong?
  • [06:32:51] <yates> i guess you also would need all the standard installed packages - is that what you mean? i.e., the packages that get installed in a fresh bbb debian build
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  • [06:33:06] <yates> "included" is probably better than "installed"
  • [06:33:30] <yates> openssh, e.g.
  • [06:34:23] <yates> the ideal system doesn't exist.
  • [06:34:30] <ds2> you ship it, you are responsible for getting sources
  • [06:34:39] <ds2> don't matter if you use it or not
  • [06:34:56] <ds2> a lot of the stuff in debian is compiled for options that you might not care about
  • [06:34:57] <yates> you mean by the licensing rules?
  • [06:35:03] <ds2> yep
  • [06:35:34] <yates> well why would angstrom change any of this?
  • [06:36:03] <yates> if you need a package, you need it.
  • [06:36:15] <yates> no matter the distro
  • [06:36:56] <ds2> you compile it all from sources
  • [06:37:03] <ds2> you have to have had the sources
  • [06:37:34] <yates> hey, it's been good chatting, ds2. it's getting late for me. have a happy new year! (i'll be saving this conversation for future reference)
  • [06:37:37] <ds2> a lot of the yocto stuff is to address that
  • [06:37:46] <ds2> have a happy new year yourself!
  • [06:38:34] <yates> :)
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  • [08:24:46] <micha_> Does anyone knows which camera modules are supported by beagleboard-xm?
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  • [10:00:18] <Guest66784> cross compiled to basic c code our ubuntu laptop for beaglebone green
  • [10:00:41] <Guest66784> but exe is not running
  • [10:01:14] <Guest66784> "arm-linux-gnueabihf-gcc -mfpu=neon -mfloat-abi=softfp main.c -o main"
  • [10:01:44] <Guest66784> and scp main root@192.168.2.41:/root
  • [10:01:58] <Guest66784> -bash: ./main: No such file or directory
  • [10:02:42] <Guest66784> main exe runs on beaglebone black but dont run on beaglebone green
  • [10:06:32] * magra (manisha@nat/ti/x-qychagvkrdsomwlz) Quit (Remote host closed the connection)
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  • [10:07:22] <himmet> Hello
  • [10:07:53] * himmet (5f09ee62@gateway/web/freenode/ip.95.9.238.98) Quit (Client Quit)
  • [10:08:17] <Guest66784> how can I resolve this problem
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  • [10:25:45] <tbr> Guest66784: which distributions do you run on both?
  • [10:27:26] <Guest66784> debian
  • [10:28:19] <tbr> I'd expect debian images to be hardfp
  • [10:28:36] <Guest66784> but black is debian
  • [10:28:48] <Guest66784> too
  • [10:29:07] <tbr> same version?
  • [10:32:12] <Guest66784> black version :7.5
  • [10:32:55] <Guest66784> green version: 7.8
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  • [10:34:54] <tbr> shouldn't be very different then
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  • [10:36:32] <Guest66784> can you explain a little bit?
  • [10:36:33] <Guest66784> pls
  • [10:41:27] <tbr> what does "file main" say?
  • [10:41:51] <tbr> also what does "file /bin/bash" say on each of the boards?
  • [10:43:31] <Guest66784> beaglebone black is OK,everything is running
  • [10:44:04] <Guest66784> but "main" not running on green
  • [10:44:40] <Guest66784> ./main: No such file or directory
  • [10:45:58] <tbr> please answer my questions, thanks
  • [10:46:17] <Guest66784> ı dont understand
  • [10:46:27] <tbr> > what does "file main" say?
  • [10:46:31] <Guest66784> file main say ??
  • [10:46:33] <tbr> > also what does "file /bin/bash" say on each of the boards?
  • [10:46:54] <tbr> yes, run the command
  • [10:47:34] <Guest66784> ok one second
  • [10:47:58] <Guest66784> ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-armhf.so.3, for GNU/Linux 2.6.32, BuildID[sha1]=1a8601b954c83a01d91298d0f2f8f61ca033ebdd, stripped
  • [10:48:41] <tbr> which one is that?
  • [10:48:53] <Guest66784> this is "file /bin/bash"
  • [10:49:04] <tbr> on which of the boards?
  • [10:49:40] <Guest66784> green
  • [10:49:48] <Guest66784> beaglebone green
  • [10:49:50] <tbr> and on the black?
  • [10:49:58] <Guest66784> main: ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux.so.3, for GNU/Linux 2.6.32, BuildID[sha1]=6e55952a557992089e59b8b41fa40d54b12f49ec, not stripped
  • [10:50:36] <Guest66784> ok will write beaglebone black
  • [10:51:46] <Guest66784> beaglebone black:
  • [10:51:56] <Guest66784> "file /bin/bash"
  • [10:51:58] <tbr> so the "main" file is compiled for "softfp", notice that it's missing the "armhf" for the linker
  • [10:53:23] <Guest66784> but I tried arm
  • [10:54:17] <Guest66784> arm-linux-gnueabi-gcc -mfpu=neon -mfloat-abi=softfp main.c -o main
  • [10:54:17] * goonie (7ca84005@gateway/web/freenode/ip.124.168.64.5) has joined #beagle
  • [10:55:30] <Guest66784> still continues the same problem.
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  • [10:57:18] <goonie> I'm having problems with booting a BBB off an SD card.
  • [10:57:31] <goonie> I flash the latest Debian image, and it boots fine.
  • [10:58:38] <goonie> but then after a reboot I can't access the device via USB.
  • [10:58:52] <Guest66784> sorry tbr how can ı resolve prroblem ?
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  • [11:00:31] <tbr> goonie: give it time, first boot is slow
  • [11:00:52] <tbr> goonie: if you interrupt first boot it might break things and you need to reflash
  • [11:01:18] <tbr> Guest66784: you still haven't posted the output of "file /bin/bash" on the BBB
  • [11:01:53] <ogra_> shouldnt he use the armel toolchain for building armel code ? :)
  • [11:01:56] <goonie> OK, will try that. I assume "shutdown -h now" will shut a BBB down cleanly? Trying to rule out shutdown corrutpion.
  • [11:02:00] <Guest66784> ok I writing
  • [11:02:29] <Guest66784> beaglebone black
  • [11:02:39] * micges (~micges@afc177.neoplus.adsl.tpnet.pl) Quit (Ping timeout: 245 seconds)
  • [11:03:11] <Guest66784> ELF 32-bit LSB executable, ARM, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.26, BuildID[sha1]=0xc1c0045c796fe3b54c8e3496e2f4e1943e37025d, stripped
  • [11:03:37] <Guest66784> this is "file/bin/bash"
  • [11:04:25] <Guest66784> beaglebone black "file/main"
  • [11:04:26] <Guest66784> ELF 32-bit LSB executable, ARM, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.32, BuildID[sha1]=0x2a95556e08927955b4b8599e540da41fec492fb1, not stripped
  • [11:08:15] <Guest66784> Sorry tbr, I posted outputs
  • [11:09:20] <tbr> it didn't mention the interpreter
  • [11:09:51] <tbr> anyway, I suspect that the BBB for some reason runs a softfp userland
  • [11:10:11] <tbr> which means that binaries won't be compatible between both, as you already found out
  • [11:10:33] <tbr> I'd recommend to reflash both devices with the latest debian image
  • [11:10:48] <tbr> and then build for armhf
  • [11:12:06] <Guest66784> mr tbr , I downloaded to latest debian image on sdcard
  • [11:12:43] <Guest66784> Now , we are runnnig latest debian version on bbg
  • [11:12:48] <Guest66784> debian 8.2
  • [11:13:00] <tbr> make sure both boards run the same
  • [11:13:24] <Guest66784> only bbg is debian 8.2
  • [11:13:57] <Guest66784> bbb is still debian 7.5
  • [11:15:12] <Guest66784> but still continuos problem on bbg
  • [11:16:03] * sco17 (~sco@p4FCE180E.dip0.t-ipconnect.de) Quit (Quit: Nettalk6 - www.ntalk.de)
  • [11:16:08] <tbr> you MUST build for armhf. This is the last time I'm going to repeat this.
  • [11:16:17] <Guest66784> ok
  • [11:18:51] <Guest66784> like this ?
  • [11:18:54] <Guest66784> arm-linux-gnueabihf-gcc -mfpu=neon -mfloat-abi=softfp main.c -o main
  • [11:19:14] <Guest66784> "-mfloat-abi=softfp " is it true ?
  • [11:19:34] <tbr> softfp is WRONG
  • [11:19:43] <Guest66784> it is hard ?
  • [11:21:46] <Guest66784> tbr, it is running "mfloat-abi=hard"
  • [11:22:04] <Guest66784> why softfp is wrong ?
  • [11:23:03] <tbr> you might want to ask a web search engine about "the difference between arm softfp and hardfp" or such
  • [11:23:56] <Guest66784> ı know the difference
  • [11:24:33] <tbr> then the answer to your question should be obvious
  • [11:24:40] <Guest66784> I use mfloat-abi=softfp
  • [11:24:50] <Guest66784> but exe is not runnig
  • [11:24:54] <Guest66784> running
  • [11:25:25] * tbr is *not* going to repeat himself
  • [11:27:11] <Guest66784> why doesn't run when mfloat=softfp
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  • [11:36:59] <tbr> Guest66784: I told you where your problem is. Repeatedly. What more can I do?
  • [11:37:56] <Guest66784> tbr sorry, my english is little
  • [11:38:06] * Ceriand|desktop1 (~Ceriand@unaffiliated/ceriand) Quit (Ping timeout: 255 seconds)
  • [11:39:48] <Guest66784> I want to use "softfp" on NEON
  • [11:40:48] <Guest66784> dont want to use "hard"
  • [11:42:01] <Guest66784> because I needed feature of softfp
  • [11:43:31] <Guest66784> but the main is not running on bbg when mfloat-abi is softfp
  • [11:43:46] <tbr> then you need to find an softfp image
  • [11:43:51] <tbr> good luck with that
  • [11:44:16] <ogra_> for next time:
  • [11:44:17] <ogra_> dpkg --print-architecture
  • [11:44:27] <ogra_> that prints the debian arch you are using
  • [11:44:28] <Guest66784> have a softfp image
  • [11:44:48] <Guest66784> http://beagleboard.org/latest-images
  • [11:44:58] <Guest66784> ok
  • [11:45:27] <Guest66784> dpkg --print-architecture "armhf"
  • [11:45:35] <tbr> I don't think any of the 'latest-images' are softfp
  • [11:45:52] <ogra_> also dont use the hardfloat toolchain to build softfp like above ... there are many more defaults you would have to override ... if you want to build softfloat binaries use the -gnueabi toolchain packages, not -gnueabihf
  • [11:45:55] <tbr> I'm surprised that there was a softfp debian image at all for the BBB at some point
  • [11:46:13] <ogra_> yeah
  • [11:46:17] <ogra_> thats rather weird
  • [11:46:33] <tbr> as that would have implied armel
  • [11:46:45] <tbr> which was what, ARMv5?
  • [11:46:54] <ogra_> v4t or so even
  • [11:47:02] <tbr> ugh
  • [11:47:21] <ogra_> to keep openmoko in zombie state :)
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  • [11:48:56] <Vishal_> hello
  • [11:49:10] <Vishal_> Vishal here
  • [11:49:23] <Guest66784> tbr and ogra I build use -gnueabi
  • [11:49:35] <Vishal_> i want help ralated to beaglebone black
  • [11:49:50] <ogra_> well, then the result should be armel (softfp)
  • [11:49:51] <Guest66784> but is not running
  • [11:50:14] <ogra_> <Guest66784> arm-linux-gnueabihf-gcc -mfpu=neon -mfloat-abi=softfp main.c -o main
  • [11:50:23] <ogra_> this isnt the softfp complier ...
  • [11:51:01] * Vishal_ (31f87cf4@gateway/web/freenode/ip.49.248.124.244) Quit (Client Quit)
  • [11:51:24] <Guest66784> arm-linux-gnueabi-gcc -mfpu=neon -mfloat-abi=softfp main.c -o main
  • [11:51:29] <ogra_> (you can surely use the armhf compiler to build armel, but then only setting -mfpu=neon -mfloat-abi=softfp will not be enough ... there is lots of more defaults)
  • [11:51:41] <ogra_> yeah, thats better
  • [11:52:01] <ogra_> but effectively you should really see to run armhf on both devices ...
  • [11:52:04] <Guest66784> but it is not running on bbg
  • [11:52:16] <Guest66784> it is running on bbb
  • [11:52:29] <ogra_> why do you define -mfpu=neon -mfloat-abi=softfp ?
  • [11:52:41] <ogra_> let the compiler default do their duty instead ;)
  • [11:52:47] <ogra_> *defaults
  • [11:53:36] <Guest66784> I writing kaiser filteriing code
  • [11:54:05] <Guest66784> floating operations must be fast
  • [11:54:16] <Guest66784> so I use neon and softfp
  • [11:58:34] <Guest66784> ogra
  • [11:58:37] <Guest66784> sorry
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  • [11:58:49] <Guest66784> can you help me?
  • [12:00:54] <tbr> so, you want fast floating point operations and then explicitly want to loose about 10% performance by using softfp instead of hardfp?
  • [12:01:01] <tbr> I don't have to understand this...
  • [12:03:59] <Guest66784> thx tbr
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  • [12:04:10] <Guest66784> for helping
  • [12:04:15] <Guest66784> ok
  • [12:04:21] <Guest66784> understand to you
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  • [15:43:02] <olfox> Hi all , i would like to use the 4D 7" display but for outdoor puropose, 250cd will be not enough... So find another display with higher brightness could be the solution. If so, must i choose a ttl display to be compatible? Thanks a lot !
  • [15:48:37] <av500> olfox: ttl or HDMI
  • [15:48:44] <av500> thats the two options you have
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  • [16:26:42] <zmatt> tbr: *lose
  • [16:28:36] <tbr> yes
  • [16:29:18] <zmatt> I wonder if he cared so much about performance, why there's no optimization flag
  • [16:29:31] <zmatt> but oh well
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  • [17:47:53] <jacob33> is it possible to view 800x600 resolution on a 420x320 screen as a rolling/scrolling mouse view under debian xfce?
  • [17:49:20] <jacob33> having problems setting things up as i can't click ok or apply
  • [18:01:11] <zmatt> you can try requesting it with xrandr
  • [18:05:11] <zmatt> xrandr --output FOO --panning 800x600 replace FOO by the name of the output (check by running xrandr without any arguments)
  • [18:07:24] * gusnan (~gusnan@unaffiliated/gusnan) Quit (Ping timeout: 250 seconds)
  • [18:07:31] <zmatt> but that's only going to work if the fbdev driver supports software-panning... hardware panning can only work in the vertical direction
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  • [18:16:31] <jacob33> xrandr failed to get size of gamma for output default screen 0: minimun 480x320 current 480x320, maximum 480x320 default connected 480x320+0+0 0mm x 0mm 480x320 0.00*
  • [18:18:57] <zmatt> which kernel?
  • [18:19:38] <jacob33> i don't know I'm kinda new at this
  • [18:19:45] <zmatt> uname -r
  • [18:20:13] <jacob33> 4.1.15-v7+
  • [18:20:36] <zmatt> huh, that's a weird kernel, what image are you running?
  • [18:20:59] <zmatt> normally a kernel on a BBB will contain -bone or -ti in the name
  • [18:21:05] <jacob33> debian i think
  • [18:21:18] <zmatt> cat /etc/dogtag
  • [18:21:46] <jacob33> no such file of directory
  • [18:23:00] <zmatt> where'd you get it? because a missing /etc/dogtag normally means a really old debian image (or a non-debian image), except that seems to be contradicted by the kernel version (which is weird, but not old)
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  • [18:24:53] <jacob33> I compiled it with a running version of kali 2.0
  • [18:24:55] <zmatt> other files that might exist and indicate system version are /ID.txt /etc/debian_version /etc/rcn-ee.conf /etc/os-release
  • [18:25:20] <zmatt> ok so you got some weird but debian-like image?
  • [18:25:34] <zmatt> cat /etc/debian_version
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  • [18:26:21] <jacob33> yes and i've had issues with it since I'm thinking about starting over but i don't want to loose all of my work
  • [18:27:04] <jacob33> debian version "Kali Linux 2.0"
  • [18:28:57] <zmatt> if you do start over, I recommend the latest jessie snapshot from here -> http://elinux.org/Beagleboard:BeagleBoneBlack_Debian
  • [18:29:20] <zmatt> ok so you have a totally weird system, it'll be hard to give you much advice on that
  • [18:29:25] <jacob33> ok thanks g2g my dog just excaped
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  • [18:51:04] <THE> hallo
  • [18:51:38] <THE> IRENE FONTANELLO IS A BITCH
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  • [19:20:30] <Guest34724> on jessie (kernel 4.1). how can i disable i2c pins (P9_19 & 20)? need to use for GPIO.
  • [19:21:02] <zmatt> use a device tree without capemgr
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  • [19:22:34] <Guest34724> so i'll need to disable the capemgr?
  • [19:25:04] <zmatt> P9_19 and P9_20 are used for the I2C bus used for CAPE auto-detection
  • [19:25:51] <Guest34724> ah so can they not be disable
  • [19:25:56] <Guest34724> *d
  • [19:26:13] <zmatt> they can, if you don't need automatic CAPE detection
  • [19:26:19] <zmatt> I never use capemgr
  • [19:26:37] <zmatt> but, sorry to leave you with incomplete explanation, but I gotto go
  • [19:28:26] <Guest34724> ok
  • [19:28:34] <Guest34724> might be worth just using a diff pin
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