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  • [00:00:31] * 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'
  • [00:00:31] * Set by KotH!~attila@erica.kinali.ch on Wed Jul 15 13:55:07 UTC 2015
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  • [00:32:58] <ben____> Hello All, I have a beaglebone black which will not boot when power is applied. I have reflashed the eMMC (successfully) and can also boot of an external SD card (while holding the boot button). I would appreciate any info for how to fix this. Thank you
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  • [00:57:07] <Maxz> ben____ what power source did you use?
  • [00:57:33] <ben____> 5V wall adapter
  • [00:59:02] <Maxz> just to clarify, it boots from external SD card but it does not from eMMC
  • [00:59:11] <Maxz> that's right?
  • [00:59:16] <ben____> correct
  • [00:59:37] <ben____> Well, It wont boot of the SD card eiter, unless the boot button is held down
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  • [01:00:24] <ben____> * I have previously expanded the partitions so it should use the image on the external SD card by default
  • [01:00:59] <Maxz> do you have a serial-usb adapter? it would be useful to see the bootloader output
  • [01:01:56] <Maxz> beaglebone black has an uart used as booting output
  • [01:02:32] <ben____> I have one buried somewhere, but it may take some time to find. Would you be able to point be at any documentation for going through that?
  • [01:03:40] <Maxz> about bootloader and uart: http://diydrones.com/profiles/blogs/booting-up-a-beaglebone-black
  • [01:03:42] <ben____> *point me to and documentation
  • [01:05:28] <veremit> serial debug - http://blog.tonywall.co/2013/11/beaglebone-black-serial-debug-connection/
  • [01:05:52] <Maxz> look this too
  • [01:05:53] <veremit> ignoring reference to Angstrom .. that's *ancient* :)
  • [01:05:53] <Maxz> http://www.element14.com/community/thread/30621/l/i-cannot-flash-bbb-emmc?displayFullThread=true
  • [01:08:32] <ben____> interesting. I will try and go through these. If i remember it's somewhat involved to get the usb-serial converter working on a mac, but I will try this soon! Thank you for your help!
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  • [04:55:19] <Guest25798> anyone here?
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  • [04:59:11] <veremit> nope
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  • [06:26:22] <nova_> I thought it would be a great idea to dist-upgrade my beaglebone black from wheezy to jessie. Everythign seems to have gone ok except the kernel didn't get updated, and it is now too low of a version to support udev, which in turn breaks several packages. I've never compiled a kernel or updated one with anything other than apt. Can anyone help me upgrade my kernel please?
  • [06:27:19] <veremit> nova_ .. you can 'apt-get' a linux-image with a new kernel
  • [06:27:56] <veremit> so the usual 'apt-cache' command should give you some options
  • [06:28:05] <nova_> do i need to add a special repo to do that or can i get it from debian servers?
  • [06:28:32] <veremit> usual debian/rcn-ee servers
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  • [06:28:55] <nova_> i wonder why it didnt update along with the dist-upgrade
  • [06:29:10] <veremit> usually a good idea not to, in case it breaks something
  • [06:29:15] <veremit> even more so with arm devices
  • [06:29:42] <nova_> so i should sudo apt-cache search linux-image and see what comes up?
  • [06:29:55] <nova_> then i can sudo apt-cache install xxx?
  • [06:30:03] <nova_> sorry sudo apt-get install....
  • [06:30:03] <veremit> much changes on the arm drivers/etc in kernels currently
  • [06:30:09] <veremit> yeah, something like that
  • [06:30:39] <nova_> much changes...do you mean im going to have trouble with a new kernel too?
  • [06:32:14] <veremit> probably :)
  • [06:32:24] <veremit> depends what peripherals/features you're using
  • [06:32:51] <nova_> I havent' really messed with the BBB in a couple years..its been running rock solid...then out of the blue i can connect to my deluge-daemon running on it...so i thought maybe it needs an upgrade....
  • [06:33:19] <nova_> im not using much..just a little usb hard drive for the root fs
  • [06:34:27] <veremit> all I can say is, be prepared :)
  • [06:34:49] <nova_> my plan B, if I could not update the kernel, was to grab a new ubuntu or debian image and start from scratch....but that seems like so much work when i have services configured and working
  • [06:35:12] <veremit> you may find its a less-stressful route
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  • [06:36:29] <nova_> the problem is my little netbook with the sd card reader is a windows machine..and i can't seem to find anything distributed as an img file
  • [06:36:53] <veremit> usually xz'd for size
  • [06:37:02] <veremit> 7zip should read them though
  • [06:37:29] <nova_> i opened them with 7zip and found another .tar inside.
  • [06:38:17] <veremit> http://elinux.org/Beagleboard:BeagleBoneBlack_Debian
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  • [06:39:24] <veremit> jessie snapshots are 2/3 down
  • [06:39:45] <nova_> 2/3 down?
  • [06:40:59] <nova_> oh sorry...2/3 down the page
  • [06:41:16] <nova_> i think this is where i grabbed it lastnight to look...but ill check again
  • [06:41:44] <veremit> 'flasher' refers to images that program the emmc .. others are standalone
  • [06:42:41] <nova_> yeah i think im going to go for the 4gb lxde standalone and load it onto a sd...i have the older 2gb mmc model
  • [06:43:07] <nova_> but then i think i need to edit uenv.txt or something to change the root to the external usb hard drive
  • [06:43:14] <nova_> thats the plan anyway
  • [06:44:32] <nova_> oh well that is an .img file youre right...i wonder what i was looking at lastnight....maybe it was only the ubuntu images i was looking at
  • [06:44:42] <veremit> yik
  • [06:45:05] <nova_> i was considering a switch to ubuntu...which do you think would be best to run?
  • [06:46:00] <veremit> i've not run the lxqt one yet .. only debian console images on my arm boards. I did run lxde once .. but I won't run anything as 'heavy' as ubuntu personally
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  • [06:47:19] <nova_> im not really worried about the DE at all i mostly use it via ssh...but i wouldnt mind having a DE for the heck of it.....I think I switched from lxde to xfce.....to me theyre about the same performance wise and one sucks less : D
  • [06:48:19] <nova_> whether its debian or ubuntu, it would probably end up with xfce....absolutely not unity though
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  • [06:52:12] <nova_> maybe i should jsut man up a bit and do the console only
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  • [06:54:05] <veremit> :)
  • [06:55:38] <nova_> i think that before plan B, i should still try plan A...updating the kernel to 4.something
  • [06:55:50] <nova_> then when i break everything i can resort to a fresh image
  • [06:56:52] <veremit> if you're only usng the software and not io/etc you're probably ok
  • [06:57:09] <nova_> yeah i never got as far as using the io sadly
  • [06:58:01] <nova_> im intimidated by electronics...heck 20 years of trying not to break linux and im still intimidated by linux
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  • [07:03:46] <veremit> pfft go for it. You'll never learn if you don't try :D
  • [07:06:04] <nova_> oh i also wanted to ask..should i be thinking about rflashing the mmc with a new stock image or updating the bootloader in any way while im doing all this?
  • [07:06:40] <veremit> depends really whether you have any reason to 'go back' .. no harm normally in updating everything
  • [07:08:12] <veremit> aight time for shower .. bb..
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  • [07:18:52] <nova_> apt-cache is telling me theres a 3.16.0 kernel available...i seem to have 3.8.13-bone30 kernal atm
  • [07:19:30] <nova_> if i remember right the message i got yesterday suggested i need a 4.x version though.
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  • [07:46:44] <Super_Guest> hi
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  • [07:55:39] <zmatt> nova_: I would recommend one yes
  • [07:55:58] <zmatt> e.g. 4.1.12-ti-r26
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  • [08:05:32] <nova_> nova:thanks zmatt....do you know how i can go about getting a 4.x kernel?
  • [08:06:47] <nova_> zmatt:thanks zmatt....do you know how i can go about getting a 4.x kernel?
  • [08:06:54] <nova_> lol im brain dead atm
  • [08:07:25] <zmatt> apt-get update ; apt-get install linux-image-4.1.12-ti-r26
  • [08:08:33] <nova_> i dont see that image with apt-cache though...the only version i see there is 3.16.0
  • [08:09:56] <nova_> and if i try to install 3.16.0 i get errors telling me i have unmet dependencies and that consolekit broke udev
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  • [08:11:43] <Super_Guest> does beaglebone have a HAL support OS...?
  • [08:11:49] <Super_Guest> beagleboneblack*
  • [08:12:06] <zmatt> nova_: what image are you using? ( cat /etc/dogtag )
  • [08:12:16] <zmatt> *filesystem image
  • [08:12:56] <nova_> no such file or directory
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  • [08:13:10] <zmatt> in other words, really ancient
  • [08:13:11] <nova_> this was a debian wheezy image from a year or two ago
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  • [08:14:13] <nova_> uname -r tell me 3.8.13-bone30
  • [08:14:17] <nova_> tells*
  • [08:14:35] <zmatt> I thought rcn was still also building images for wheezy, but I don't really keep track of that stuff, I only use stretch
  • [08:15:04] <nova_> well this all started when i tried to dist-upgrade from wheezy to jessie
  • [08:16:26] <zmatt> so maybe your apt repositories aren't set up right? or package trouble, dunno.... I started with a jessie console image, removed unnecessary crap, then upgraded to stretch and installed stuff as needed
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  • [08:17:53] <nova_> when i updated, i changed the repos from wheezy to jessie, but they seem to be the standard debian mirrors
  • [08:18:04] <zmatt> you need rcn-ee's repo also
  • [08:18:10] <nova_> ahhh
  • [08:18:30] <nova_> that might help
  • [08:18:33] <zmatt> deb http://repos.rcn-ee.com/debian/ jessie main
  • [08:18:48] <nova_> thank you! ill get that in there and try
  • [08:19:50] <nova_> i might eun into a snag though....just a minute ago i tried to install the 3.16.0 kernel from debian and it fails to install because of all the unmet dependenciy issues with udev and consolekit and everything else.
  • [08:20:12] <nova_> is there a way to force it to just install the kernel and ignore the rest for now?
  • [08:20:59] <zmatt> depends on the state you're in right now... if all of your packages are still wheezy then you can just switch your repos back to wheezy
  • [08:21:07] <zmatt> if you're halfway through, you may have no way but forward
  • [08:21:39] <nova_> i think im all the way to jessie now, with the exception of the packages that rely on a newer kernel
  • [08:22:10] <zmatt> what packages? I don't think any of them rely on a specific kernel version
  • [08:22:17] <zmatt> even on stretch I could still install 3.8
  • [08:22:23] <zmatt> if I wanted to
  • [08:23:27] <nova_> the error i saw near the end of the dist-upgrade was about udev not being able to be updated because of the kernel version, as a result other packages are going to break
  • [08:23:55] <nova_> it suggested i could apt-get -f install but then i will likely be unable to reboot
  • [08:24:14] <zmatt> do you have a console cable in case of emergency?
  • [08:24:32] <nova_> i dont :/
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  • [08:24:55] <zmatt> have you made a backup of any relevant data? :P
  • [08:25:17] <zmatt> your description still sounds really vague
  • [08:26:34] <nova_> i know..i should have written it down.
  • [08:26:50] <zmatt> can you still ssh into the system?
  • [08:27:13] <nova_> yes, and im connected to a monitor with a terminal right now
  • [08:27:25] <nova_> but ssh also works
  • [08:27:25] <zmatt> ok, one sec
  • [08:27:35] <zmatt> yeah but you can't copy/paste from a monitor ;)
  • [08:27:42] <nova_> true
  • [08:28:24] <zmatt> (well... you can in case of our server whose text-mode screen output is also available by telnetting to its BMC, but I digress..)
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  • [08:30:25] <nova_> here'
  • [08:30:32] <nova_> here is what i see now with apt-get
  • [08:30:37] <nova_> http://pastebin.com/kkYzndfp
  • [08:30:45] <zmatt> dpkg-query -W -f='${Status} ${binary:Package} ${Version}\n'
  • [08:31:59] <nova_> bah..my terminal buffer is too small to catch it all
  • [08:32:01] <zmatt> ok so to begin with that linux-image looks really problematic
  • [08:32:16] <nova_> ok i will ignore it then
  • [08:33:46] <nova_> that command is returning alot of results...i set the buffer to 5000 lines and its still only c-z
  • [08:34:05] <nova_> its going to to be another couple thousand lines i think
  • [08:34:08] <zmatt> you have more than 5000 packages installed? o.O
  • [08:34:16] <zmatt> well probably l-l is taking up most of it
  • [08:34:26] <zmatt> specifically liba-libz :P
  • [08:35:50] <nova_> lol pastebin says "please wait"
  • [08:36:04] <zmatt> I get around 319 packages on our console BBBs and 540 on one with a GUI...
  • [08:36:17] <zmatt> (though really really minimal GUI, I'll admit)
  • [08:37:29] <nova_> http://pastebin.com/KWz1Kz7J
  • [08:37:58] <nova_> i loaded xfce..i dont recall if it started out as console only or had lxde to begin with
  • [08:38:58] <nova_> then ive played around with apache and bind9 and whatever else seemed fun
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  • [08:40:43] <nova_> its been my WINS, NTP, dns cache, and torrent box mostly...I dont even use the DE, except when i had to change some ssh keys
  • [08:43:12] <zmatt> nova_: but if you previously were missing rcn-ee's repo, now that you've added it have you tried apt-get update and dist-upgrade again?
  • [08:43:16] <zmatt> that might help
  • [08:44:23] <zmatt> aptitude may also be better at solving package problems, although with this many packages it'll probably unusably slow
  • [08:45:53] <zmatt> but unless you have prior experience with dealing with a failed upgrade it may be simpler to just reflash the thing
  • [08:46:54] <zmatt> ok, so actually your upgrade never completed
  • [08:47:16] <nova_> i havent added the repos yet but thats the plan just as soon as i build up the guts to try it...but i just foresaw there being an issue installing just the required image without everything else balking at me
  • [08:47:30] <zmatt> I see various packages unpacked but not installed
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  • [08:48:15] <nova_> is that why its trying to still install them along with the specific packages im telling it to get?
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  • [08:48:27] <zmatt> yes
  • [08:48:38] <zmatt> and why it's asking for apt-get -f install
  • [08:48:57] <zmatt> but first make sure you've done an apt-get update so it knows about rcn-ee's repo
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  • [08:49:07] <nova_> yes ill do that first and have another look
  • [08:49:18] <nova_> i think this is were it all fell apart though "install ok half-configured udev 175-7.2"
  • [08:49:25] <zmatt> also wth, right now you have no kernel installed?
  • [08:49:39] <nova_> that seems unlikely
  • [08:49:51] <zmatt> it lists no linux-image
  • [08:50:31] <nova_> when i run uname-r returns "3.8.13-bone30"
  • [08:50:44] <zmatt> yes that the kernel you're running
  • [08:50:59] <zmatt> is it still installed? (check /boot )
  • [08:51:57] <nova_> i need to check /boot on the boot device correct? I have the root fs set to an external HD
  • [08:53:10] <nova_> drwxr-xr-x 4 root root 4096 Nov 14 2013 .
  • [08:53:11] <nova_> drwxr-xr-x 21 root root 4096 Oct 31 04:32 ..
  • [08:53:11] <nova_> -rw-r--r-- 1 root root 109070 Nov 13 2013 config-3.8.13-bone30
  • [08:53:11] <nova_> drwxr-xr-x 2 root root 4096 Nov 14 2013 dtbs
  • [08:53:11] <nova_> -rw-r--r-- 1 root root 2382952 Nov 13 2013 System.map-3.8.13-bone30
  • [08:53:11] <nova_> drwxr-xr-x 2 root root 16384 Dec 31 1969 uboot
  • [08:53:13] <nova_> -rwxr-xr-x 1 root root 3341744 Nov 13 2013 vmlinuz-3.8.13-bone30
  • [08:53:14] <zmatt> it better be mounted at /boot then since that's where the kernel gets put
  • [08:53:15] <nova_> lrwxrwxrwx 1 root root 21 Nov 14 2013 zImage -> vmlinuz-3.8.13-bone30
  • [08:53:43] <zmatt> don't paste anything more than a line or two in the channel please
  • [08:53:53] <nova_> ok sorry
  • [08:53:54] <zmatt> where is that directory located now?
  • [08:54:12] <nova_> that is out of the root fs /boot..i think its on the HDD
  • [08:54:30] <zmatt> but it's not actually /boot ?
  • [08:54:58] <nova_> i dont think so
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  • [08:55:55] <nova_> here is fdisk -l http://pastebin.com/9LfFJciv
  • [08:55:57] <zmatt> ok so debian has no idea about that dir or its significance
  • [08:56:17] <zmatt> that isn't useful info
  • [08:56:32] <nova_> but debian should be writing into the real boot dir on the sd card right?
  • [08:57:07] <zmatt> it has no idea that that's the real boot dir if you have a different root filesystem and didn't setup something like a bind mount for /boot
  • [08:57:21] <zmatt> so those files are currently outside package management
  • [08:58:59] <zmatt> pff, sorry, I think you've run out of tech support credits with me for today :P
  • [08:59:18] <nova_> heh ok
  • [08:59:22] <nova_> thanks for the help though
  • [09:00:24] <zmatt> but debian will just put the kernels in /boot, regardless of where that's located or whether that's the same place the bootloader is going to look for it... if you have a nonstandard setup then it's also your responsibility to ensure those two match
  • [09:00:33] <nova_> I think this is what I did to uEnv.txt to make it run to root fs from the HDD, http://pastebin.com/pH03PWTu
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  • [10:31:37] <Peter|_l> Hi everyone. I'm trying to get Molloy's SPDEV to work using the C++ code from his website. When I compile it I get a lot of weird errors. Anyone have any ideas?
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  • [11:29:38] <rob_w> showing errors might , but just might, help
  • [11:31:11] <Peter|_l> The err file is about 70kB - how should I show it?
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  • [11:33:29] <Peter|_l> Here's the firsts few err lines:In file included from /usr/include/c++/4.6/ios:43:0, from /usr/include/c++/4.6/ostream:40, from /usr/include/c++/4.6/iostream:40, from SPIDevice.cpp:28: /usr/include/c++/4.6/bits/ios_base.h:411:13: error: 'streampos' in namespace 'exploringBB::std' does not name a type /usr/include/c++/4.6/bits/ios_base.h:412:13: error: 'streamoff' in namespace 'explor
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  • [11:36:02] <rob_w> pastebin is a solution for pasting large files, yet this might be a c++ syntaxt thing .. so not beagle related.. i guee
  • [11:39:42] <Peter|_l> I'm using a compiler (gcc, g++) that arrives installed on the BBB, so maybe it is a beagle thing
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  • [11:50:45] <nova_> im looking at the debian 8 image, does the script "/opt/scripts/tools/mv-rootfs-dev-sda.sh" allow me to boot from a sd card them run the rootfs from a usb hard drive like it sounds like it does?
  • [11:52:12] <nova_> I managed this before by tweaking uEnv.txt but i don't see that file on the newer debian 8 image
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  • [12:02:11] <Peter|_l> Nova_: uEnv.txt is on my BBB - what do you do to it?
  • [12:08:14] <Peter|_l> ...
  • [12:09:00] <Peter|_l> its at /boot/uboot/uEnv.txt
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  • [12:24:40] <nova_> Peter: odd, i have nothing in that folder
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  • [12:27:10] <nova_> Peter: I previously had debian 7 off a usb HDD, after having modified uEnv.txt. I just wrote a fresh debian 8.2 image to a sd card and i was looking for this file to see if i can do the same thing i did before..but no uEnv.txt files exists
  • [12:27:28] <nova_> sorry, running off of a USB HDD...
  • [12:28:33] <nova_> but i found a mysterious script that seems very aptly named "mv-rootfs-dev-sda.sh" and I have a feeling that it takes care of the process for me....I hope so anyway
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  • [12:41:13] <stt_michael> nova_, if you hang around ... or not ..
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  • [13:49:12] <Super_Guest> hey
  • [13:49:16] <Super_Guest> is Debian (BeagleBone, BeagleBone Black - 4GB SD) 2015-03-01
  • [13:49:17] <Super_Guest> hard float?
  • [13:49:29] <av500> I think so
  • [13:50:04] <Super_Guest> O:
  • [13:50:27] <Super_Guest> thank u for the info
  • [13:51:02] <Super_Guest> i know BBB has this NEON thing but it says is for accelerating
  • [13:51:10] <Super_Guest> so it might be software ;x
  • [13:53:02] <Super_Guest> thank u ill assume its hard float then <(^_^<)
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  • [13:58:08] <av500> you can do neon with soft float too
  • [13:58:15] <av500> its not about software floating point
  • [13:58:24] <av500> its about the calling convention
  • [14:00:13] <tbr> people will never understand the difference between hfp, sfp and fully software emulated FP
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  • [14:18:15] <AxonetBE> I can ping my device but no ssh or http possible. Where to start debugging?
  • [14:19:23] <jacekowski> tbr: well, what's a difference between sfp and fully emulated fp?
  • [14:19:43] <jacekowski> i was always under assumption that you either have hardware that does FP or you don't
  • [14:24:51] <av500> yes
  • [14:25:11] <av500> but for a long time, it was hardware FP but with soft fp calling conventiones
  • [14:25:24] <av500> so you passed float args in integer regs, not in float ones
  • [14:27:01] <philenotfound> There are 3 hard problems in computer science: caching, naming and ARM ABIs.
  • [14:27:36] <av500> and off by one errors
  • [14:27:47] <jacekowski> i thought it's 2 problems in computer science, cache invalidation, naming things and off by one errors
  • [14:27:48] <philenotfound> still 3
  • [14:27:48] <tbr> and IIRC sfp binaries will run on both non-fpu and fpu hw transparently
  • [14:29:07] <jacekowski> so hard fp is normal fp with arguments passed in proper fp registers, sfp is hard fp with arguments passed in integer registers and then the library loads them into correct fp registers, and emulated fp is fully emulated
  • [14:29:39] <jacekowski> so i presume reason for it is so sfp stuff can easily be ported between hardware with fp and hardware without
  • [14:31:41] <tbr> as most mainstream silicon comes with FPU it started to make sense to transition to HFP, the gain is minimal and mostly measured by specific workloads
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  • [14:32:12] <tbr> under synthetic conditions you can get 10% or so, IIRC
  • [14:32:42] <fr1> hi
  • [14:32:46] <fr1> I need to install "net-snmp" in embedded system, type: "beaglebone black" with Debian. What version is best for my system?
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  • [14:32:56] <tbr> a big problem is binary only crap like gpu drivers, those have been a major obstacle to transition
  • [14:33:17] <jacekowski> tbr: gpu drivers where?
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  • [14:33:25] <tbr> fr1: it's debian, just get the debian package
  • [14:33:40] <jacekowski> tbr: i would expect gpu to be so floating point heavy that noone would even attempt to run it on emulated fp
  • [14:33:50] <tbr> jacekowski: a few years ago when hfp started to gain traction it was impossible to get drivers
  • [14:34:07] <tbr> they were all compiled for sfp
  • [14:34:34] <jacekowski> i presume we are talking about embedded only right now
  • [14:34:50] <jacekowski> because PC's had hfp for 30 years now
  • [14:35:05] <tbr> jacekowski: again, no emulation involved, the only difference is a binary incompatible calling convention
  • [14:35:23] <tbr> jacekowski: ARM PCs didn't
  • [14:35:27] <jacekowski> i've had a pc with external coprocessor
  • [14:35:35] <jacekowski> and external cache
  • [14:35:42] <tbr> ARM?
  • [14:35:46] <jacekowski> x86
  • [14:36:02] * tbr checks if he is on the wrong channel
  • [14:36:19] <tbr> no, it's about beagle and those are ARM only, so stop moving the goal post and stay on topic.
  • [14:36:27] <jacekowski> sorry
  • [14:36:28] <fr1> tbr: I need to use mib2c, > Login as root user > Extract downloaded Net-SNMP-version 5.2.1 source package > go to .../net-snmp-5.2.1 > run "./configure" > run "make" > run "make install" > run "cd perl" > run "perl Makefile.PL" > run "make" > run "make install "
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  • [14:37:23] <tbr> fr1: it's a debian, you can do whatever you want on a standard debian system with it
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  • [14:37:54] <fr1> tbr: /usr/bin/ld: cannot find -lperl collect2: ld returned 1 exit status make[1]: *** [snmpd] Error 1 make[1]: Leaving directory `/net-snmp-5.4.4/agent' make: *** [subdirs] Error 1
  • [14:38:26] <fr1> tbr: you have any idea for the error?
  • [14:38:57] <tbr> fr1: I know nothing about this. I'd suggest to take your problem to either debian users or the community for that perl package
  • [14:39:11] <fr1> okay
  • [14:39:35] <tbr> this channel is for beagleboard.org specific problems, yours is a generic build problem
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  • [14:40:42] <fr1> tbr:thanks
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  • [14:47:30] <tbr> fr1: why don't you just install 'libnet-snmp-perl' anyway?
  • [14:48:34] <fr1> tbr: okay I try
  • [14:49:17] <tbr> I mean, you say you want net::snmp and as I Initially said, there's a package
  • [14:49:44] <tbr> why would you want to build it? that's just unnecessary pain unless you have good reasons
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  • [14:58:19] <fr1> tbr: okay clear
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  • [18:17:29] <brasilino> Hi everyone... I'm looking for the memory map table for Black. I mean, the address table that shows devices addresses as well as DDR memory address range... I could not find anywhere..
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  • [18:45:05] <brasilino> ok.. thanks...
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  • [18:47:01] <zmatt> you're welcome ... https://docs.google.com/spreadsheets/d/1hRgpmJ-4Yeojyl8XPO9n3IoYSWKPkg6oRnEvdfV_RaM/edit
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  • [20:06:09] <Smillsey> Hello
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  • [21:56:11] <[Butch]> Quick question: Are there any bonescript gurus around whose brains I can pick about how to structure some code?
  • [22:05:36] <joeyla> Not I. Just got my ¨Exploring Beaglebone¨ today and am looking forward to learning all about it.
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  • [22:14:28] <ds2> Be sane. Use C.
  • [22:16:08] <Cybernaut> Well at least they didn't ask how to blink an LED in bone script.
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  • [22:19:45] <bbg_user1> hi, need some help connecting my grove buzzer to a grove relay
  • [22:20:01] <bbg_user1> grove relay is connected to my beaglebone green board
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  • [22:20:17] <bbg_user1> i dont know how to connect the buzzer to the relay
  • [22:20:38] <bbg_user1> i am electronics ignorant
  • [22:21:55] <bbg_user1> can someone please help me out ?
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  • [22:26:47] <joeyla> Does the Grove Wiki not help?
  • [22:27:07] <bbg_user1> no it doesnt
  • [22:27:39] <bbg_user1> thats why i thought i wd ask here
  • [22:28:17] <bbg_user1> the diagram on the tiny booklet which came with the bbg has a bi-drectional arrow (in the air) between the relay and the buzzer
  • [22:28:25] <bbg_user1> i dont understand what to make of it
  • [22:28:44] <bbg_user1> does it mean that i have to do wiring or breadboard jumper(s) ?
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  • [22:32:32] <joeyla> Ok. I don´t have the gear. Buf I´d connect the relay to the main board. Then you have the wire for the buzzer. SIG, VCC and Gnd. I´d connect SIG and VCC together and to Power then connect GND via the relay contacts.
  • [22:33:01] <joeyla> Activating the relay would then turn on the buzzer. Is this what your trying to do?
  • [22:34:28] <bbg_user1> but the relay has just one connection to the bbg board
  • [22:34:36] <bbg_user1> how do i connect the buzzer to the relay ?
  • [22:34:42] <bbg_user1> that is my question
  • [22:35:05] <bbg_user1> there is no open physical port for me to connect
  • [22:40:01] <bbg_user1> i cant find anything online which shows the diagram i have
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  • [22:43:50] <joeyla> http://www.seeedstudio.com/wiki/File:Twig-Relay.jpg
  • [22:44:03] <joeyla> The Green connector on this relay
  • [22:46:40] <bbg_user1> yes, it has 2 screws on the top and small slits for something
  • [22:46:44] <bbg_user1> i dont know what
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  • [22:49:48] <joeyla> The is the switch. These contact get joined to gether when the relay is activated. So if you connect real GND into one of those terminals and the GND from the Buzzer into the other. When the relay is on it will short them together completing your circuit.
  • [22:49:51] <bbg_user1> can the buzzer be wired directly to the bbg board instead of the relay ?
  • [22:50:27] <joeyla> Youĺl need a small flat blade screwdriver to open the screws and insert your wires and tighten again.
  • [22:50:34] <bbg_user1> sorry what is "real GND" ?
  • [22:51:02] <joeyla> Just actual connect to GND on your board somewhere.
  • [22:52:39] <bbg_user1> there is a socket to connect the relay to the board using standard cables they have provided
  • [22:52:54] <bbg_user1> the black, red, white, yellow wires
  • [22:53:08] <bbg_user1> i just dont know how to connect the buzzer to the relay
  • [22:53:41] <bbg_user1> the buzzer by itself has a similar cable leading out/in to it ... i just dont have a place to connect it to
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  • [22:56:16] <joeyla> http://www.seeedstudio.com/wiki/File:Conn-four.jpg
  • [22:56:35] <joeyla> Is this the buzzer. Doesn´t is connect to the board directly also.
  • [22:57:01] <bbg_user1> yes this is the buzzer
  • [22:57:29] <bbg_user1> but the connection diagram which came with the bbg kit only shows connecting the relay to the board
  • [22:57:56] <bbg_user1> the connection between the buzzer and the relay is "hanging" in thin air and is biderectional
  • [22:58:01] <joeyla> Take a look here: http://www.seeedstudio.com/wiki/Grove_-_Buzzer
  • [22:58:03] <bbg_user1> bi-directional ...
  • [22:58:33] <Cybernaut> it goes both ways ... bi directional
  • [22:58:38] <bbg_user1> saw that already, but beaglebone green (the board) is not covered
  • [22:59:00] <joeyla> any online link to that diagram your talking about.
  • [22:59:02] <bbg_user1> is there a way for me to share the diagram using fileshare or imageshare ?
  • [22:59:15] <bbg_user1> i couldnt find any online link yet
  • [22:59:36] <Cybernaut> the the beagle board green have it's own wiki?
  • [23:00:00] <bbg_user1> yes, but the grove relay connection is not covered
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  • [23:02:10] <joeyla> I´ll have a look and see if I can find anything
  • [23:02:33] <bbg_user1> sure thanks, let me see what is the best i can send u as a link here in the next 5 mins
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  • [23:03:52] <bbg_user1> http://www.seeedstudio.com/wiki/File:Aws_kit_bbg.JPG
  • [23:04:01] <bbg_user1> http://www.seeedstudio.com/wiki/File:Aws_kit_bbg_wiki_guide_e1.jpg
  • [23:04:18] <bbg_user1> these are the 2 images i could find.... but they dont have connection for the relay
  • [23:04:23] <bbg_user1> thats where i am stuck
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  • [23:04:42] <bbg_user1> i have been able to connect the temp sensor and the oled display etc...
  • [23:05:31] <bbg_user1> just the relay part has got me stuck since there are 2 things which need this to connect - a) the grove buzzer and b) the grove button
  • [23:05:56] <joeyla> Ok. So there are 2 x Grove connector on the BBG board. Can´t you directly connect the relay or the buzzer to one of these.
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  • [23:08:17] <bbg_user1> thats what i meant to ask
  • [23:08:28] <bbg_user1> since the relay is connected to the board
  • [23:08:44] <bbg_user1> is connecting the buzzer directly to the board feasible ?
  • [23:09:05] <bbg_user1> as in, does it make sense
  • [23:09:06] <bbg_user1> ?
  • [23:09:17] <bbg_user1> if yes, where do i connect it to ?
  • [23:09:49] <bbg_user1> i have an i2c hub which has an open port
  • [23:10:08] <bbg_user1> can i use that for the buzzer ? even though thats not mentioned in the diagram ?
  • [23:10:30] <joeyla> Are the 2 x Grove connector on the BBG the same. As in give the same functionality. If so then connect relay to one and buzzer to the other
  • [23:10:54] <bbg_user1> i have the i2c hub connected on one already
  • [23:11:08] <bbg_user1> thats what's got my oled display and my temperature sensor connected
  • [23:11:57] <bbg_user1> one quick question, when i add remove sensors etc.. do i need to power down the beagleboard green ? or can i make these hardward changes on the fly with actual power supply ?
  • [23:12:32] <bbg_user1> so far, just to be careful, i always power down the board and then make hardware modifications ...
  • [23:13:04] <joeyla> Safer to power down. Just seen this: http://www.seeed.cc/beaglebone_green/
  • [23:13:37] <joeyla> Doesn´t appear to support relay or buzzer. Only I2C devices?
  • [23:14:19] <joeyla> What is the I2C hub?
  • [23:14:34] <bbg_user1> let me send u a link
  • [23:15:35] <bbg_user1> http://www.seeedstudio.com/wiki/Grove_IoT_Starter_Kits_Powered_by_AWS
  • [23:15:57] <bbg_user1> this has the buzzer, relay and the i2c etc.. etc.. under the beaglebone green section
  • [23:16:44] <bbg_user1> http://www.seeedstudio.com/wiki/Grove_IoT_Starter_Kits_Powered_by_AWS#Beagle_Bone_Green_and_Grove_IoT_Starter_Kit_Powered_by_AWS
  • [23:18:54] <bbg_user1> This is more specific -> http://www.seeedstudio.com/wiki/Grove_Starter_Kit_for_BeagleBone_Green
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  • [23:20:35] <bbg_user1> it has the schematics for the relay and the buzzer in ordered sequence so can u have a quick look ?
  • [23:22:49] <bbg_user1> do i really need the relay if the buzzer can connect via the i2chub to the bbg board ?
  • [23:23:35] <joeyla> Ćheck Page 4-5 here. You would connect the relay and buzzer to the digital I/O section of the expansion board
  • [23:23:39] <joeyla> http://www.seeedstudio.com/wiki/Grove_Starter_Kit_for_BeagleBone_Green
  • [23:23:57] <joeyla> Sorry, here: http://www.seeedstudio.com/document/pdf/Introduction%20to%20Grove.pdf
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  • [23:25:12] <bbg_user1> ok will do
  • [23:25:45] <bbg_user1> just wanted to check once again on your thoughts if i connected the buzzer to the board directly do i still need the relay ?
  • [23:29:18] <joeyla> No. Don´t think you´d need the relay. The buzzer should use less than 10mA so safe to directly connect to I/O pin. The connects supplied with the relay and buzzer won´t directly connect to the BBG or the I2C hub. You´ll have to do some wiring mods and connect to the pin headers on either side of the BBG. I
  • [23:29:39] <joeyla> I´m not too familiar with the BBG so you´ll have to look at some schematics.
  • [23:29:54] <bbg_user1> ok, thanks
  • [23:30:14] <bbg_user1> btw i did find a recipe which might be close to what i want to do
  • [23:30:25] <bbg_user1> my requirements are more basic however
  • [23:30:34] <bbg_user1> thanks so much for your help
  • [23:30:41] <bbg_user1> take care, bye
  • [23:31:06] <bbg_user1> sorry, here is the recipe -> http://www.seeedstudio.com/recipe/index.php?controller=recipe&action=show&recipe_id=363&ref=product
  • [23:31:18] <bbg_user1> almost missed that :)
  • [23:36:23] <joeyla> Thats pretty close alright. So you can connect the relay to the UART connector. Surprising that but if must be configured for I/O mode. Best of luck with it.
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