**** BEGIN LOGGING AT Wed Apr 09 02:59:58 2014
Apr 09 03:18:05 <jonahbron_> I'm trying to control a servo with an external power supply, but it's not working as I expect it to.  When I connect the servo to the PSU, it only jumps for a moment, then stops.
Apr 09 03:18:16 <jonahbron_> The board is set to sweep the servo back and forth.
Apr 09 03:19:03 <jonahbron_> The servo takes 6V max 1.2A, which my power supply has.
Apr 09 03:19:10 <jonahbron_> Does anyone recognize this problem?
Apr 09 04:48:57 <narasimha> hi..
Apr 09 04:50:21 <narasimha> how to convert code composer studio binary i.e hello.out to hello.bin .... am getting problem while loading .out binary.. please any one can help me...
Apr 09 04:57:44 <tbr> nobody here uses CSS, ask support or read their docs.
Apr 09 07:57:59 <keesj> great apt-get update/update fixed the heartbleed on my bone !  http://filippo.io/Heartbleed/
Apr 09 08:06:08 <BlkRhinoAK> Morning, afternoon, evening...
Apr 09 08:07:27 <BlkRhinoAK> what are the recommended powered USB hubs one can use with the BBB
Apr 09 09:12:43 <rhinoak> What are some of the recommended Powered USB HUBs for the BBB
Apr 09 09:12:58 <av500> any should work
Apr 09 09:14:38 <rhinoak> @av500 Well I used a Belkin 4 port Hub and it seemed to have broken my bone
Apr 09 09:14:55 <av500> hmm
Apr 09 09:15:10 <rhinoak> sending to Beagle Hospital to have them take a look at it.
Apr 09 09:15:38 <rhinoak> I think I may have over powered the hub
Apr 09 09:16:01 <rhinoak> either way I think I may have caused the issue
Apr 09 09:16:26 <rhinoak> by putting together some old parts to get the hub working
Apr 09 09:16:52 <rhinoak> i.e. 12v ac source to 5v connection on hub
Apr 09 09:17:08 <tbr> weeeeelll... just /maaaybe/ then.. :-/
Apr 09 09:17:44 <rhinoak> which is why I'm trying to see if there's a perfered hub
Apr 09 09:18:25 <c10ud> rhinoak, cheap 5$ hubs work
Apr 09 09:19:02 <rhinoak> as long as it isn't over 12v huh
Apr 09 09:19:27 <tbr> as long as it's 5V
Apr 09 09:19:59 <rhinoak> cause seems like it killed a couple of other usb devices, like my bluetooth dongle, wireless keybrd/mouse dongle
Apr 09 09:20:07 <tbr> also technically hubs should NEVER feed back through the upstream port
Apr 09 09:20:15 <rhinoak> oh well you live and learn.
Apr 09 09:20:18 <tbr> most cheap crap and old devices do
Apr 09 09:20:18 <c10ud> yeah, "never" :)
Apr 09 09:20:40 <c10ud> btw - I don't even power it for my wifi dongle but ymmv
Apr 09 09:20:41 <rhinoak> what's the upstream port
Apr 09 09:20:44 <tbr> which wouldn't be such a big problem if people wouldn't hook up 12V to them
Apr 09 09:21:47 <rhinoak> @tbr the upstream port is the client side usb port, right?
Apr 09 09:22:21 <tbr> rhinoak: the one unlike the many others
Apr 09 09:22:45 <rhinoak> ok... that sounds like the micro usb port
Apr 09 09:22:55 <tbr> rhinoak: the hub should only supply power to devices that are attached to it, not the the host
Apr 09 09:23:21 <rhinoak> well I think I now know what the problem was...
Apr 09 09:24:43 <av500> well, powering a 5V hub with 12V is out of the specs
Apr 09 09:24:50 <rhinoak> power to hub + micro usb port  and host usb port (standard usb connector) were connected to hub.
Apr 09 09:25:09 <rhinoak> agreed
Apr 09 09:25:52 <rhinoak> solution would be to find 5v AC adapter.
Apr 09 09:26:05 <av500> use one from a cheap usb hub :)
Apr 09 09:26:13 <rhinoak> looks like I'll be stopping by Wallie world or Radio Shack
Apr 09 09:26:33 <tbr> for a new BBB and a new USB hub
Apr 09 09:26:48 <rhinoak> well see the thing is the hub has this very tiny diameter connector
Apr 09 09:27:32 <rhinoak> @tbr... sending into beagle hospital today
Apr 09 09:27:53 <av500> ah, newfangled hubs
Apr 09 09:27:55 <rhinoak> so hopefully they'll send me new or repair mine
Apr 09 09:28:06 <av500> ye olde ones had these nice 5.1mm barrels
Apr 09 09:28:58 <av500> http://www.pollin.de/shop/dt/OTEwOTQ2OTk-/Stromversorgung/Netzgeraete/Festspannungs_Netzgeraete/Schaltnetzteil_TOP_MICROSYSTEMS_HK_I510_A05_5_V_2_A.html
Apr 09 09:29:02 <av500> 5.5mm
Apr 09 09:29:13 <av500> $5
Apr 09 09:33:01 <tbr> whatever beagle hospital is
Apr 09 09:33:16 <rhinoak> Texas Instrument
Apr 09 09:33:56 <tbr> you mean RMA?
Apr 09 09:34:03 <rhinoak> yeah..
Apr 09 09:34:30 <tbr> suite yourself. I wouldn't dare to RMA a product that I destroyed by my own mistake.
Apr 09 09:35:25 <rhinoak> well the jury is still out on whether I've destroyed it.
Apr 09 09:35:48 <rhinoak> but your opinion is strongly considered
Apr 09 09:36:33 <rhinoak> new one is on order anyway.
Apr 09 09:37:32 <jacekowski> tbr: i've done it multiple times, always clearly stating what happened
Apr 09 09:38:41 <jacekowski> tbr: sometimes they came back saying i've broke it so it's my problem now
Apr 09 09:39:05 <rhinoak> are most of you using USB hubs? Which version 2.0 or 3.0
Apr 09 09:39:47 <jacekowski> no
Apr 09 09:39:50 <jacekowski> 2.0 if anything
Apr 09 09:39:56 <jacekowski> 3.0 would be pointless
Apr 09 09:40:08 <rhinoak> jacekowski: the times you'd RMA your board did you get a response back pretty quickly?
Apr 09 09:40:27 <rhinoak> duely noted.
Apr 09 09:40:42 <jacekowski> nah, only time i've blown up my BB there was nothing to sent back
Apr 09 09:41:07 <rhinoak> gotcha!
Apr 09 09:41:21 <rhinoak> what sort of projects are you using your board for
Apr 09 09:41:38 <jacekowski> just blowing shit up
Apr 09 09:41:43 <rhinoak> hahaha
Apr 09 09:42:16 <rhinoak> I'm planning on using mine on a UAV i'm specking out now
Apr 09 09:43:27 <rhinoak> http://www.aerialtechnology.com/shop/diy-aeronavics-xm-8-builder/
Apr 09 09:45:29 <jacekowski> IMO, bad idea
Apr 09 09:45:50 <jacekowski> it's not real time
Apr 09 09:46:08 <jacekowski> and if it does restart for whatver reason you will end up crashing it
Apr 09 09:46:45 <jacekowski> i would have something else doing the actual flying
Apr 09 09:47:30 <rhinoak> agreed, which it will, incorporating the BB for other functions
Apr 09 09:48:27 <rhinoak> so this blowing shit up project... care to elaborate?
Apr 09 10:07:41 <ariaveta> hello. I want to stream live audio on my lan. Is the beagle board suitable for that?
Apr 09 10:08:27 <av500> yes
Apr 09 10:08:36 <av500> you need an audio cape or sp
Apr 09 10:08:37 <av500> so
Apr 09 10:08:42 <av500> or you use a usb audio dac
Apr 09 10:11:24 <ariaveta> which audio library should I use?
Apr 09 10:17:29 <ariaveta> could be gstreamer a valid option? is it supported on the Beagle Board?
Apr 09 10:18:34 <av500> sure
Apr 09 10:18:45 <av500> its runs standard linux
Apr 09 10:26:41 <knud> \
Apr 09 12:44:42 <FUN> jonahbron_: just because servo takes 1.2A that does not mean u should use 1.2A. u may need higher current output.
Apr 09 13:43:50 <beaglestudent> hello everyone, does anybody have a little bit of time to answer a question about the BBB?
Apr 09 13:44:17 <tbr> beaglestudent: only if you ask the question
Apr 09 13:47:05 <tbr> beaglestudent: _hint_ keep it on this channel
Apr 09 13:47:14 <tbr> private messages are not appreciated
Apr 09 13:47:47 <tbr> there are hundreds of people here that possibly could answer your question
Apr 09 13:47:51 <myself> heh. because obviously only you can answer!
Apr 09 13:48:13 <tbr> obviously, duh
Apr 09 13:48:29 <beaglestudent> whats the maximum voltage that i can connect to a beaglebone black?
Apr 09 13:48:30 <Dan1> vote 1 tbr for pm
Apr 09 13:49:11 <Dan1> beaglestudent: 5v
Apr 09 13:49:18 <jkridner> beaglestudent: 3.3V
Apr 09 13:49:24 <jkridner> Dan1: trolling?
Apr 09 13:49:26 <Dan1> to the appropriate connectors
Apr 09 13:49:30 <jkridner> oh...
Apr 09 13:49:34 <jkridner>  for power?
Apr 09 13:49:41 <tbr> the SRM answers that
Apr 09 13:49:42 <myself> i/o or vcc?
Apr 09 13:49:44 <jkridner> needs to be exactly 5V
Apr 09 13:49:46 <tbr> both
Apr 09 13:49:52 <jkridner> I/O is 3.3V for digital
Apr 09 13:49:57 <jkridner> 1.8V for Analog In
Apr 09 13:50:01 <Dan1> oh... i assumed they meant to power it.....
Apr 09 13:50:19 <beaglestudent> we want to make it portable with a battery and we have a 7,2v battery (2400mAh)
Apr 09 13:50:21 <Dan1> if your talking about the gpio's....... then there is no answer.....
Apr 09 13:50:38 <Dan1> caus it varies per pin
Apr 09 13:50:42 <myself> buck converter
Apr 09 13:50:51 <beaglestudent> but it's good to know that it needs to be exactly 5v, thank you @jkridner
Apr 09 13:52:56 <beaglestudent> @jkridner: would a 4.8v battery with 2400mAh suit the 5V connector properly?
Apr 09 13:53:02 <Dan1> beaglestudent: its 5v via the usb and bullet connector
Apr 09 13:53:28 <beaglestudent> Dan1: we want to make the BBB portable and we have a battery pack consisting of 6x 1.2v batteries
Apr 09 13:53:31 <Dan1> 7.2v is WAY to much
Apr 09 13:53:47 <beaglestudent> Dan1: thats why we will remove 2 of those batteries so we have 4x 1.2v = 4.8v with 2400mAh
Apr 09 13:53:49 <Dan1> it also needs to be regulated 5v
Apr 09 13:54:02 <Dan1> so just normal batteries wont work either
Apr 09 13:54:12 <beaglestudent> we have NiMH batteries
Apr 09 13:54:20 <Dan1> 4.8v does not equal 5v.......
Apr 09 13:54:31 <Dan1> and your going to have issues
Apr 09 13:55:00 <beaglestudent> what kind of issues? from what i've found 3.7v - 5.2v is suitable
Apr 09 13:55:13 <beaglestudent> i dont know the difference between regulated 5v and a battery pack though.
Apr 09 13:56:58 <Dan1> im no expert... but ive had issues with less than 5v power on mine
Apr 09 13:57:08 <Dan1> "regulated" means its always 5v
Apr 09 13:57:46 <beaglestudent> what if i had 5v with 2400 milli amp?
Apr 09 13:58:46 <Dan1> with batteries..... they are never a constant voltage
Apr 09 13:59:37 <Dan1> when they are fully charged they could be as much as 1.5v... and after being used for a while as little as less than 1v
Apr 09 13:59:58 <beaglestudent> okay, that's very useful to know! :)
Apr 09 14:00:16 <Dan1> so without some sort of regulation..... there voltage will constantly change
Apr 09 14:00:45 <Dan1> which is why i said... you need a regulated 5v
Apr 09 14:01:30 <Dan1> one of the voltage regs i use takes anything from 30v to 7v (i think it is) and supply a constant 5v 3a
Apr 09 14:02:48 <beaglestudent> that is really nice, we should get such a component for our project too
Apr 09 14:03:23 <Dan1> it cost me about $3 i thnk it was :)
Apr 09 14:03:44 <Dan1> and i use a 12v led acid battery with it
Apr 09 14:04:12 <beaglestudent> do you remember the exact name of the component? we can order stuff :D
Apr 09 14:04:25 <Dan1> so even when the battery is charging at 14.4v or is almost flat at close to 11v...... i always get 5v out
Apr 09 14:04:56 <Dan1> give me a sec and ill find the link
Apr 09 14:05:26 <Dan1> hmm... this isnt the exact one im using..... but its from teh same supplier
Apr 09 14:05:27 <jkridner> beaglestudent: In practice, you can use lower than 5V, but USB host will break and other things may break as you lower the voltage.
Apr 09 14:05:28 <Dan1> http://www.hobbyking.com/hobbyking/store/__17161__X3_UBEC_6v_23v_input_5v_3A_Output.html?strSearch=5v%203a
Apr 09 14:05:35 <jkridner> it is designed for a 5V input...
Apr 09 14:05:46 <jkridner> anything else causes behavior for which it is not designed...
Apr 09 14:06:08 <jkridner> some people know enough to work with it in other situations, but I could never recommend such things.
Apr 09 14:06:42 <jkridner> The Adafruit 5V UBEC is handy.
Apr 09 14:07:13 <Dan1> i like to keep away from anything from adafriut...
Apr 09 14:07:34 <Dan1> they try to push there stuff..... even when its far from the best solution
Apr 09 14:08:18 <Dan1> which is somewhat... anti the whole embedded board thing...
Apr 09 14:08:27 * Dan1 shrugs 
Apr 09 14:13:35 <beaglestudent> we just found a 7.2v -> 5v somewhere, we are going to test is
Apr 09 14:13:55 <beaglestudent> thanks a lot for the help guys
Apr 09 14:14:06 <beaglestudent> happy programming :)
Apr 09 16:36:58 <bernd756> hello everyone, does anyone know when rev c will be shipped?
Apr 09 17:23:00 <honestly> hello, hoping someone here might be able to help with this, although it's not about beagle
Apr 09 17:23:33 <honestly> I have an i2c usb adapter here that is probably exposing a usb2serial interface and is *maybe* compatible to the i2c-tiny-usb driver
Apr 09 17:24:01 <honestly> how would I try this?
Apr 09 17:24:38 <_av500_> lsusb
Apr 09 17:24:41 <_av500_> lsusb -v
Apr 09 17:24:52 <_av500_> find vid/pid
Apr 09 17:24:54 <_av500_> google it
Apr 09 17:26:03 <honestly> Bus 003 Device 006: ID 10c4:0003 Cygnal Integrated Products, Inc. CommandIR
Apr 09 17:26:06 <honestly> could that be it?
Apr 09 17:26:25 <_av500_> unplug it
Apr 09 17:26:28 <_av500_> youll see
Apr 09 17:26:35 <honestly> good point
Apr 09 17:26:53 <_av500_> http://vdl120.sourceforge.net/
Apr 09 17:27:23 <honestly> hmm
Apr 09 17:28:05 <honestly> it's definitely not a temperature and humidity logger
Apr 09 17:28:10 <honestly> so it uses that board
Apr 09 17:28:18 <honestly> but has something different on it
Apr 09 17:28:32 <_av500_> it uses that chip
Apr 09 17:28:34 <_av500_>  Silabs C8051F320 USB
Apr 09 17:29:01 <honestly> yeah
Apr 09 17:38:57 <honestly> it's an "O2 Micro USB_I2C adapter"
Apr 09 17:40:06 <honestly> that is somewhat known to the google but not very
Apr 09 17:43:38 <_av500_> does not matter
Apr 09 17:43:44 <_av500_> same chipset
Apr 09 17:45:18 <_av500_> http://vdl120.sourceforge.net/ has a driver
Apr 09 17:46:28 <_av500_> using libusb
Apr 09 17:47:59 <honestly> I have libusb from distro sources (archlinux)
Apr 09 17:49:18 <_av500_> sure
Apr 09 17:49:26 <_av500_> libusb by itself does nothing
Apr 09 17:49:32 <honestly> right
Apr 09 17:49:33 <_av500_> you till have to drive the protocol
Apr 09 17:49:36 <_av500_> still
Apr 09 17:49:40 <_av500_> and the code for that is there
Apr 09 17:49:45 <_av500_> just ignore the specific stuff
Apr 09 17:49:54 <honestly> well, there is probably an i2c chip after the usb chip
Apr 09 17:50:00 <honestly> since this thing has two i2c channels
Apr 09 17:50:16 <honestly> and I have no idea how to drive that
Apr 09 17:54:09 <_av500_> start from what you have
Apr 09 17:54:14 <_av500_> try out some stuff
Apr 09 18:06:44 <djlewis> and enjoy the adventure
Apr 09 18:14:14 <_av500_> +1
Apr 09 18:21:37 <EpicMe> hey guys! anybody on?
Apr 09 18:21:51 <tbr> http://www.catb.org/esr/faqs/smart-questions.html
Apr 09 18:23:00 <mistawright> lol
Apr 09 18:23:54 <hnp_beagle> i m using bbb nd hv got problem with it...i m getting 1.5 around volts between system 5V and gnd pin...
Apr 09 18:25:04 <thurgood> are you sure it's not a 1.8v output rather than 5v, what pin specifically?
Apr 09 18:27:13 <_av500_> how do you power it?
Apr 09 18:28:42 <hnp_beagle> @_av500: i m powering it through hdmi port through my laptop...nd getting 1.14 volt between DGND and SYS5V pins..
Apr 09 18:29:16 <FUN> power~ on!    da da dan~    da da dan~    ultra~ man!
Apr 09 18:29:35 <ds2> powering what through the HDMI port?!
Apr 09 18:29:49 <djlewis> you dont wanna know ds2
Apr 09 18:29:51 <FUN> don't do that man.
Apr 09 18:30:05 <FUN> or girl
Apr 09 18:30:32 <_av500_> hnp_beagle: you are doing it wrong
Apr 09 18:31:00 <hnp_beagle> @_av500: powering through USB...
Apr 09 18:31:01 <djlewis> nobody reads docs anymore .. :(
Apr 09 18:31:02 <_av500_> the BBB cannot be powered through the HDMI port
Apr 09 18:33:12 <hnp_beagle> @_av500: i m powering it through the cable provided with BBB..
Apr 09 18:33:47 <ds2> your laptop may have a strict USB compliance
Apr 09 18:34:02 <ds2> which means the BBB is not allowed to draw over 100mA unless otherwise authorized by the laptop
Apr 09 18:34:12 <ds2> please try another power source
Apr 09 18:36:22 <hnp_beagle> @ds2: i used an power adptor 5v 1000mA and got the same result...1.114 volt
Apr 09 18:36:34 <hnp_beagle> 1.14*
Apr 09 18:37:36 <tbr> hnp_beagle: but does your board power up? leds?
Apr 09 18:38:46 <hnp_beagle> @tbr: the power led blinks only once and then goes off.
Apr 09 18:40:48 <tbr> hnp_beagle: did your board work before?
Apr 09 18:41:44 <hnp_beagle> @tbr: yup..it was working perfectly with ehternet connectedd to router and suddenly goes off...
Apr 09 18:42:41 <tbr> hnp_beagle: what did you do at that time?
Apr 09 18:43:51 <hnp_beagle> @tbr: some gpio of eagle was connected to motor driver L293D and motor was running pefectly..
Apr 09 18:44:27 <hnp_beagle> beagle*
Apr 09 18:49:27 <djlewis> was motor driver powered from beagle?
Apr 09 19:14:15 <Ahmed__> There is Rev C of BB ?
Apr 09 19:30:28 <prpplague> Ahmed__: yes there is a revC of bbb that is in the works now
Apr 09 19:30:41 <prpplague> Ahmed__: you can find all revision information on the elinux.org wiki pages
Apr 09 19:31:35 <minskmaz> hi I'm working in an environment without a router today is there a way to connect to the beaglebone directly over ethernet ?
Apr 09 19:44:55 <Ahmed__> يبي
Apr 09 19:45:00 <Ahmed__> No reply?
Apr 09 19:53:38 <heeen> is there a way to restart the usb subsystem
Apr 09 19:54:05 <heeen> sometimes my wifi stops working and replugging the dongle does not do anything
Apr 09 19:54:25 <veremit> power down + power up :D
Apr 09 19:54:29 <heeen> lsusb still shows the hub
Apr 09 20:07:25 <jkridner> anyone here backing the Arduino shield thing: https://www.indiegogo.com/projects/arduino-shield-to-beaglebone-black-cape--2 ?
Apr 09 20:16:55 <dschelt> jkridner: I've not
Apr 09 20:16:59 <dschelt> I thought about it
Apr 09 20:17:05 <dschelt> have you backed it?
Apr 09 20:17:20 <jkridner> yes, but it seems like it won't reach its goal...
Apr 09 20:17:32 <jkridner> I'm wondering if that is because people haven't heard about it or don't like it.
Apr 09 20:18:53 <dschelt> well we had it on the blog
Apr 09 20:19:00 <dschelt> but it wasn't the first project listed
Apr 09 20:19:43 <dschelt> http://makezine.com/2014/03/24/arduino-inspired-crowdfunding-campaigns/
Apr 09 20:20:34 <heNNa-> One of them is here in the channel - told they ship anyways
Apr 09 20:46:52 <shawnbon206> anything wrong with using a 5v 3a power adapter for a bbb?
Apr 09 20:48:54 <veremit> no
Apr 09 20:52:27 <shawnbon206> so even if it was 30a, as long as its 5v its good?
Apr 09 20:52:29 <prpplague> shawnbon206: as long as it is regulated and has the correct polarity
Apr 09 20:52:48 <shawnbon206> how do i check that
Apr 09 20:52:52 <shawnbon206> the regulation
Apr 09 20:53:16 <shawnbon206> or polarity
Apr 09 20:53:21 <_av500_> was it made in this decade?
Apr 09 20:53:26 <shawnbon206> yes
Apr 09 20:53:34 <_av500_> polarity with a multimeter
Apr 09 20:53:40 <_av500_> or by reading what is written on it
Apr 09 20:58:03 <shawnbon206> https://drive.google.com/folderview?id=0B6gkqQRx3edyUmV4MnpENkt3UDg&usp=sharing
Apr 09 20:58:13 <shawnbon206> i dont recognise all the symbols
Apr 09 20:58:18 <shawnbon206> just the basics
Apr 09 20:59:09 <shawnbon206> looks like positive is in the middle and negative is on the outside?
Apr 09 21:08:34 <fmoretto> hello
Apr 09 21:08:48 <fmoretto> I´m new in the chat and using the beaglebone
Apr 09 21:09:24 <fmoretto> I need to know osme issues before start to use a BBB as a main hardware of my project
Apr 09 21:10:11 <_av500_> ask
Apr 09 21:10:19 <fmoretto> I need read ADC by spi at 100 Khz  during 5 mili Sec
Apr 09 21:10:50 <fmoretto> not sure if I can read directly making just a C++ program
Apr 09 21:11:29 <_av500_> no
Apr 09 21:11:50 <_av500_> you do not have garanteed timings from user space
Apr 09 21:12:04 <fmoretto> can I do the other way using a BBB?
Apr 09 21:12:13 <_av500_> so, either a kernel driver
Apr 09 21:12:20 <_av500_> or maybe the PRUs
Apr 09 21:13:11 <fmoretto> do you know other project or someware start on this?
Apr 09 21:14:28 <_av500_> https://www.google.com/search?q=beaglebone+spi+pru
Apr 09 21:15:21 <fmoretto> can I use PRUs under linux?
Apr 09 21:15:29 <agmlego> Yes.
Apr 09 21:16:28 <fmoretto> so let se if I undertand, I can use PRUs to take a reading by spi a them set the informations to use linx to do other calculations?
Apr 09 21:16:50 <agmlego> Yes.
Apr 09 21:17:17 <agmlego> The PRU is a wholly-independent piece of hardware deisnged to be a Programmable Realtime Unit.
Apr 09 21:17:35 <agmlego> And can communicate with the ARM host processor via shared memory.
Apr 09 21:17:58 <fmoretto> I see, sound the way of my project
Apr 09 21:18:34 <fmoretto> accodinf to the forum has to be in assembler??
Apr 09 21:19:34 <_av500_> yes
Apr 09 21:19:38 <_av500_> its a separate CPU
Apr 09 21:19:49 <_av500_> but there are already some PRU projects out there
Apr 09 21:19:52 <_av500_> prujects :)
Apr 09 21:20:01 <_av500_> so, a lot of source to get inspiration
Apr 09 21:20:13 <_av500_> like how to pass the data from PRU to ARM
Apr 09 21:20:19 <agmlego> There is also a C compiler if you ask nicely.
Apr 09 21:20:22 <_av500_> how to load the program into the PRU
Apr 09 21:20:26 <_av500_> the prugramm
Apr 09 21:20:28 <Rickta59> might be easier to just use an extra mcu that can prgorammed in c
Apr 09 21:20:42 <_av500_> the pru comes for free
Apr 09 21:20:46 <_av500_> no soldering
Apr 09 21:20:47 <agmlego> Rickta59: No such device exists.
Apr 09 21:21:04 <Rickta59> ?
Apr 09 21:21:24 <agmlego> Rickta59: Now, if you mean an extra MCU for which there is a C compiler, that is a different statement.
Apr 09 21:21:26 <Rickta59> i think an stm32/pic32/pic24/msp439 ..
Apr 09 21:21:36 <agmlego> But to my knowledge, no processor natively executes C.
Apr 09 21:21:42 <Rickta59> yeah i mean a stand alone cpu
Apr 09 21:21:48 <Rickta59> and use existing compilers
Apr 09 21:21:59 <Rickta59> and just use it to sample and feed the data to the BB
Apr 09 21:22:08 <agmlego> And, as above, there *is* a C compiler for the PRU.
Apr 09 21:22:21 <agmlego> YOu just have to ask for it as it is in limited beta distribution.
Apr 09 21:22:32 <Rickta59> also a lot more complicated than something can be built and tested standalone
Apr 09 21:22:40 <agmlego> Not really.
Apr 09 21:22:45 <_av500_> sure, one can do that
Apr 09 21:22:47 <agmlego> No extra hardware needed.
Apr 09 21:22:51 <Rickta59> where do i get this c compiler?
Apr 09 21:22:52 <_av500_> but again, PRU is free
Apr 09 21:23:00 <_av500_> and it works
Apr 09 21:23:02 <agmlego> And an eminently high-speed bus for communications.
Apr 09 21:23:10 <_av500_> quite few projects using it
Apr 09 21:23:14 <agmlego> Rickta59: YOu need to ask for it.
Apr 09 21:23:19 <Rickta59> i'm asking
Apr 09 21:23:22 <_av500_> but ask who? :)
Apr 09 21:23:29 <agmlego> I *think* jkridner can give out copies of it.
Apr 09 21:23:58 <_av500_> bring a floppy :)
Apr 09 21:24:20 <fmoretto> Prus is already installed in Ångström ?
Apr 09 21:24:21 <agmlego> _av500_: Pretty sure email works too. ;-P
Apr 09 21:24:38 <agmlego> fmoretto: Um, no, they are physical hardware on the silicon die the ARM is on.
Apr 09 21:24:50 <_av500_> agmlego: newfnagled stuff
Apr 09 21:24:53 <agmlego> So, if you have a bone black, you have PRUs.
Apr 09 21:26:00 <fmoretto> agmlego  how do I use?
Apr 09 21:26:23 <Rickta59> http://elinux.org/Ti_AM33XX_PRUSSv2
Apr 09 21:26:26 <_av500_> https://www.google.com/search?q=beaglebone+pru
Apr 09 21:26:34 <Rickta59> why is the c compiler hidden?
Apr 09 21:26:39 <Rickta59> and has to be requested?
Apr 09 21:28:22 <agmlego> Rickta59: *limited-distribution beta*
Apr 09 21:28:47 <Rickta59> looking at the tools directory for the pru, there doesn't seem to be much support or activity
Apr 09 21:28:58 <agmlego> It may still have hardware-eating bugs in it, or crash your host system, or summon the four horsemen.
Apr 09 21:30:41 <Rickta59> if it were me, i'd just grab a cpu set it up to do sampling and then be able to use any board without tying myself to a BB
Apr 09 21:30:56 <Rickta59> cpu as in some small mcu
Apr 09 21:34:33 <agmlego> I do not understand why everyone is so scared of the PRU.
Apr 09 21:34:49 <Rickta59> not scared just seems like a waste of time
Apr 09 21:34:56 <agmlego> Why?
Apr 09 21:35:03 <Rickta59> learn some specialized instruction set that has no real support
Apr 09 21:35:08 <Rickta59> that only works one place
Apr 09 21:35:13 <Rickta59> or ..
Apr 09 21:35:13 <agmlego> How does it have no real support?
Apr 09 21:35:23 <Rickta59> learn some other arm asm instruction set
Apr 09 21:35:24 <agmlego> It works in every single TI chip that has it.
Apr 09 21:35:35 <Rickta59> with lots of examples and code and people you can ask
Apr 09 21:35:41 <agmlego> And it is not specialised in the slightest.
Apr 09 21:35:43 <Rickta59> so if i had questions on pru asm
Apr 09 21:35:45 <Rickta59> where would i go
Apr 09 21:35:47 <agmlego> It is a basic RISC processor.
Apr 09 21:35:53 <Rickta59> and who would i ask
Apr 09 21:35:57 <agmlego> Rickta59: The programmer's guide from TI.
Apr 09 21:36:01 <Rickta59> right
Apr 09 21:36:05 <agmlego> Circuitco, TI.
Apr 09 21:36:11 <Rickta59> so if you are asking how to do it in a BB forum
Apr 09 21:36:12 <agmlego> THis channel to a point.
Apr 09 21:36:21 <Rickta59> you are probably not a canadite to be using it
Apr 09 21:36:54 <Rickta59> do you want to code in a risc instruction set fmoretto ?
Apr 09 21:36:57 <agmlego> Rickta59: On the other hand, nothing out there is as cost-effective or as powerful, assuming you already have a bone in your hand.
Apr 09 21:37:09 <Rickta59> assuming learning asm is free
Apr 09 21:37:12 <fmoretto> where can i find the instruction set for PRU?
Apr 09 21:37:14 <agmlego> Rickta59: ARM is also RISC. As is MSP430. And PIC. ;-P
Apr 09 21:37:18 <Rickta59> and time isn;t a contraint
Apr 09 21:37:32 <Rickta59> and if you have problems you can figure it out yourself
Apr 09 21:37:33 <agmlego> fmoretto: The programmer's guide from TI on the processor.
Apr 09 21:38:35 <Rickta59> file:///tmp/01-AM335x_PRU_ICSS_Overview.pdf fmoretto
Apr 09 21:38:50 <agmlego> ...yeah, that link will not work.
Apr 09 21:39:00 <agmlego> Just saying. ;-P
Apr 09 21:39:14 <Rickta59> sorry that was part of the git hub resources
Apr 09 21:39:22 <Rickta59> https://github.com/beagleboard/am335x_pru_package/blob/master/Documentation/01-AM335x_PRU_ICSS_Overview.pdf
Apr 09 21:40:52 <agmlego> Rickta59: But yes, you are right. People who think they are incapable of learning an assembly language to do realtime stuff probably should not be doing realtime stuff. Any more than people incapable of finding information online should be doing technical projects using hardware with web-based documentation.
Apr 09 21:41:37 <ds2> learning different assembly variants isn't that hard. the concepts are transferable
Apr 09 21:42:06 <agmlego> THat too, especially between RISC ISAs.
Apr 09 21:42:11 <Rickta59> what are you really trying to do fmoretto ?
Apr 09 21:42:37 <agmlego> Sounded like high-speed realtime data acquisition.
Apr 09 21:43:05 <agmlego> 20 samples in a 5ms window.
Apr 09 21:43:46 <agmlego> Er, 500 samples.
Apr 09 21:43:50 <agmlego> I can math today.
Apr 09 21:44:06 <fmoretto> Rickta59 I need read a very low signal (is a freq betwen 3khs and 2 Khz)
Apr 09 21:44:39 <fmoretto> this signalis readed bys the adc just for 3 to 5 mili sec
Apr 09 21:45:06 <Rickta59> and what are you going to do with it?
Apr 09 21:45:32 <fmoretto> I need take woth a 50 Khz or more, them apply a fft to make sure the Frequency
Apr 09 21:46:19 <fmoretto> I buy one BBB but was impossible take reading thaht fast using C++
Apr 09 21:47:22 <ds2> 10uS per sample? that's easy
Apr 09 21:49:03 <fmoretto> the signal can coe mixed with 2 diferent frequency, when I apply the FFT I can determine the freq mixed
Apr 09 21:57:56 <fmoretto> is aprox 300 samples taking at 50 Khz  for just 5 mili sec
Apr 09 22:00:27 <fmoretto> yes is a realtime data acq
Apr 09 22:01:07 <fmoretto> I need take 2 or 3 reading of this in 1 sec an them wait 10 sec and start the process again
Apr 09 22:08:02 <agmlego> fmoretto: It is not that C++ cannot be used for that *speed* of acquisition.
Apr 09 22:08:34 <agmlego> fmoretto: It is that, if you need the samples from a _specific period of 5ms_, userspace applications are not going to have the guaranteed timing you are looking for.
Apr 09 22:08:48 <agmlego> THus, either a kernel-level application, or the PRU.
Apr 09 22:09:13 <agmlego> If you do not care that _these samples_ came from _this 5ms window_, then userspace is probably fine.
Apr 09 22:10:21 <fmoretto> I need to know the rate of the adc in thaht way we can calculate the freq of the signal
Apr 09 22:14:23 <agmlego> Right, so you do need realtime data, because all the samples need to be the same distance, or a known distance, apart in time.
Apr 09 22:14:53 <honestly> that's really a task for a dedicated piece of hardware.
Apr 09 22:14:56 <fmoretto> exactly agmlego
Apr 09 22:15:10 <agmlego> Yes, a dedicated piece of hardware...like the PRU. ;-P
Apr 09 22:16:01 <honestly> yep.
Apr 09 22:16:19 <honestly> can it store 300 samples?
Apr 09 22:18:38 <fmoretto> ok to resume using PRU i can take 300 samples at 50 Khz and put in ammeroy to share with alinux running in same BBB?
Apr 09 22:22:09 <jaw22> Hi all, I am researching building a random number generator. Is there anything wrong with sampling the LSB of an analog input with nothing connected, ie, will this consistently pick up noise? Or will I see a dominating 0? My BBB is on backorder, otherwise I'd just test...
Apr 09 22:22:36 <honestly> it's fine as a noise source
Apr 09 22:22:47 <honestly> you'll want to do the standard things to it
Apr 09 22:22:52 <honestly> whitening and such
Apr 09 22:23:12 <honestly> there's a lot of literature and you should use it if you want to build something good
Apr 09 22:24:25 <honestly> well, I've never used a BBB analog input
Apr 09 22:24:43 <honestly> but on microcontrollers analog inputs are certainly noisey (:
Apr 09 22:26:20 <jaw22> oh no, it's linear algebra
Apr 09 22:28:12 <jaw22> thanks for the pointer
Apr 09 22:37:06 <honestly> if you want something cryptographically secure, you'
Apr 09 22:37:22 <honestly> ll want to just use your "real" random data as the seed to a CSPRNG
Apr 09 22:42:21 <honestly> (being very creaful to make sure you actually create something that looks like uniformly randomly chosen seeds spanning the entire space of the seed)
Apr 09 22:45:13 <bjackman> Hey guys - just wondering: I've noticed the BeagleBone doesn't have a serial header, but that serial is over USB.
Apr 09 22:45:31 <bjackman> Does that mean you can't do serial IO while JTAG debug is connected?
Apr 09 22:45:34 <bjackman> (which is also over USB)
Apr 09 22:52:39 <thews> any of you know of a tiny passthrough switch component(module or cape) that I could couple with the BBB to not take up a port
Apr 09 22:52:46 <thews> thinking of making an office gadget
Apr 09 22:53:03 <thews> ethernet**
Apr 09 23:07:26 <ds2> no, the JTAG is on a different endpoint
Apr 09 23:18:24 <ianMu1988> hello everyone :) anybody there?
Apr 09 23:19:08 <ianMu1988> I got a serious problem with my beaglebone, I do not know the reason is, does anyone can help me to explain this?
Apr 09 23:19:54 <jkridner> you haven't said what the problem is.
Apr 09 23:20:01 <jkridner> so, no idea if anyone can help
Apr 09 23:21:00 <ianMu1988> sorry I
Apr 09 23:22:07 <ianMu1988> the problem is I just flashed a new image from Beaglebone latest image and I put the sudo apt-get blablabla.....it showed -sh command not found
Apr 09 23:22:20 <ianMu1988> root@beaglebone:~# sudo apt-get install python-opencv -sh: sudo: command not found
Apr 09 23:22:45 <jkridner> did you flash a Debian or Angstrom image?
Apr 09 23:22:55 <jkridner> I don't believe that Angstrom has 'sudo'.
Apr 09 23:23:04 <ianMu1988> yes, the Angstrom image
Apr 09 23:23:12 <jkridner> well, not the default images... Angstrom does in general.
Apr 09 23:23:31 <jkridner> 'sudo' and 'apt-get' aren't instructions for Angstrom on BeagleBone.
Apr 09 23:23:57 <jkridner> If you mean to use Angstrom, you need to use the right commands.
Apr 09 23:24:55 <ianMu1988> eh.....sorry for this stupid question, I am fresher for the linux system, if I am going to install the python-opencv, what should I install? or what command should I use?
Apr 09 23:27:17 <ianMu1988> ?
Apr 10 00:42:05 <prpplague> RobotGrrl: you finally finding some time to tinker around with beaglebone black for any projects?
Apr 10 00:42:40 <RobotGrrl> prpplague: yeah! totally! i usually use it to run python scripts instead of on the computer
Apr 10 00:43:24 <prpplague> RobotGrrl: hehe well good, at least you are getting some use out of the one i gave you, hehe
Apr 10 00:43:29 <RobotGrrl> prpplague: right now it scores things on thingiverse and watches for new things on thingiverse
Apr 10 00:44:01 <RobotGrrl> i tried to make it blink the led on the bacon cape, but it glitches out for me. not sure why, must be doing something dumb
Apr 10 00:44:24 <prpplague> RobotGrrl: ahh
Apr 10 00:44:41 <RobotGrrl> is it supposed to get warm?
Apr 10 00:45:01 <prpplague> it can depending on the load and such
Apr 10 00:45:13 <prpplague> shouldn't get over 45C though
Apr 10 00:45:25 <RobotGrrl> are there any system calls to make to tell what the load is? is there a temp sensor too?
Apr 10 00:46:02 <prpplague> RobotGrrl: you can use the ps command from a shell prompt to see what is being used
Apr 10 00:46:33 <prpplague> RobotGrrl: as well as using the "top" command
Apr 10 00:46:43 <prpplague> RobotGrrl: they can display what's being run
Apr 10 00:47:20 <prpplague> RobotGrrl: gotta run, but i am certainly glad you found a use for it, you looked a little shocked when i gave you the package back in boston, hehe
Apr 10 00:47:21 <prpplague> laters
Apr 10 00:47:48 <RobotGrrl> aah sorry, computer is lagging!
Apr 10 00:48:00 <RobotGrrl> cool to know about ps, and thank you for the BBB
**** ENDING LOGGING AT Thu Apr 10 02:59:58 2014