**** BEGIN LOGGING AT Wed Dec 17 02:59:59 2014
Dec 17 03:56:50 <izaakschroeder> any kernel wizards around? hacked together a version of uio_pruss that compiles and runs on 3.18+ (https://github.com/izaakschroeder/uio_pruss) but results in "Unhandled fault: external abort on non-linefetch (0x1018) at 0xb6882002" when trying to access the shared memory via UIO
Dec 17 03:57:10 <izaakschroeder> not sure how to proceed in debugging this as i am not a kernel wizard
Dec 17 03:57:52 <izaakschroeder> it's based on these patches: https://github.com/koenkooi/meta-beagleboard/blob/master/common-bsp/recipes-kernel/linux/linux-ti-3.14/pru/0001-These-are-the-patches-necessary-for-enabling-the-PRU.patch
Dec 17 04:04:33 <izaakschroeder> http://permalink.gmane.org/gmane.comp.hardware.beagleboard.user/72377 seems like a similar issue
Dec 17 06:57:05 <koleto> Q.  is RNDIS underneath usb tethering?
Dec 17 06:59:38 <tbr> I'm not sure how to parse that question. They are related if you mean that.
Dec 17 07:01:09 <koleto> is the RNDIS used as a protocol for usb tethering on BBB?
Dec 17 07:02:33 <koleto> I have several BBB to connect on a PC/Mac or Linux and the only connector on my hardware is USB
Dec 17 07:03:33 <Peanut> koleto: Yes, it is. You get a virtual network interface over USB when you hook up a BBB.
Dec 17 07:03:49 <tbr> if you use the default debian image on it, yes
Dec 17 07:04:20 <koleto> and I have android kiosk app running on the BBB with a web server on the android that should be connected to the host computer with kind of PnP
Dec 17 07:05:13 <Peanut> koleto: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/Documentation/usb/gadget_multi.txt
Dec 17 07:06:13 <koleto> im collecting ideas on how to solve the problem … tbr do U thing I will be able to get UPnP on the RNDIS for broadcasting the web page url of the server tunning on BBB?
Dec 17 07:08:30 <koleto> tbr tnx for the link very informative … i’m kind of newbie in this
Dec 17 07:10:07 <tbr> koleto: sounds like you're running android, no idea about that. All I know is that it supports such things as "usb tethering", ymmv.
Dec 17 07:11:30 <koleto> Peanut tnx for the link very informative … i’m kind of newbie in this
Dec 17 07:12:15 <koleto> tnx tbr the same here I’m collecting information…
Dec 17 08:11:22 <memoriesheld>  I recently purchased a Beaglebone black. It operates fine with the exception that I cannot connect a USB hub that will be recognized by the BBB. If I connect my keyboard/touchpad dongle directly to the BBB, the keyboard/touchpad works. However, if I plug a USB hub into the BBB with the dongle plugged into it, the keyboard/touchpad will not operate. I have tried three different hubs, two self powered, one not powered, with the sa
Dec 17 08:18:19 <woglinde> memoriesheld which kernel?
Dec 17 08:18:36 <woglinde> memoriesheld and how many ampere your AC has?
Dec 17 08:27:28 <memoriesheld> kerner 3.8.13  and 5V 2A
Dec 17 08:29:24 <memoriesheld> woglinde, still there?
Dec 17 08:31:55 <KotH> dont be hasty little hobbit
Dec 17 08:33:44 <tbr> also, what sort of hub is it? USB1.1? USB2?
Dec 17 08:35:37 <woglinde> memoriesheld hm intressting that should work, or the musb driver was fixed in someparts
Dec 17 08:35:43 <woglinde> and get worser in others
Dec 17 08:40:24 <memoriesheld> tbr, I have tried 3 different hubs, all are 2.0, one non self powered, the other 2 are both self powered
Dec 17 08:42:27 <tbr> memoriesheld: you tried with having it connected on power up?
Dec 17 08:44:34 <memoriesheld> tbr: yes, the hub was connected to the BBB before power up each time
Dec 17 08:46:22 <tbr> weird
Dec 17 08:47:40 <memoriesheld> can i do a "sudo apt-get install musb driver" to update the driver?
Dec 17 08:58:30 <Mik_> Can anybody help me?
Dec 17 09:03:19 <embed> Hai all, is this possible to set gpio in MLO??
Dec 17 09:03:55 <woglinde> embed why you need this?
Dec 17 09:04:06 <woglinde> why is u-boot not good enough?
Dec 17 09:04:07 <demok> hi, can i use hdmi port after disabling hdmi pins on p8 of bbb?
Dec 17 09:04:55 <LetoThe2nd> embed: mlo is only software, it can do about anything that fits into the space constraints. if everything makes sense is another question, indeed.
Dec 17 09:11:53 <embed> i need to set gpio for buzzer sound when poweron, i set it in uboot but take few seconds!!
Dec 17 09:12:38 <woglinde> few seconds is not enough?
Dec 17 09:12:51 <woglinde> hm maybee doing in hw would be better
Dec 17 09:13:23 <embed> yes , exactly  it takes 4 seconds
Dec 17 09:16:27 <LetoThe2nd> spl(u-boots mlo standin) is part of the uboot sources, and uboot sources are available. go beat them into whatever shape you want. i don't see the point nor the problem.
Dec 17 09:17:22 <embed> We designed our h/w without this provision. thats the problem now
Dec 17 09:18:01 <LetoThe2nd> unrelated statement is unrelated.
Dec 17 09:18:07 <embed> LetoThe2nd: I don get you exactly
Dec 17 09:19:06 <LetoThe2nd> embed: i repeat: spl(u-boots mlo standin) is part of the uboot sources, and uboot sources are available. go beat them into whatever shape you want. i don't see the point nor the problem.
Dec 17 09:21:45 <embed> LetoThe2nd: Hmmm oka.
Dec 17 10:58:50 <akhil_> hi
Dec 17 10:59:00 <akhil_>  I have a Beagleboard XM with me. I suspect that the level shifter connected to Uart3 (U9 in schematic) is faulty. I thinking about removing the U9 and bypass the uart3 directly to the DB9 connector. I will interface to uart3 only with a serial-to-usb converter which has a Vmax = 3.3v. Is it safe to do this? What is the maximum voltage that can be safely applied to the Uart 3 pins?
Dec 17 11:01:02 <akhil_> is there anybody here??
Dec 17 12:12:54 <_av500_> akhil: well you are not
Dec 17 12:13:30 <woglinde> av500 -> akhil_ [0117dc25@gateway/web/freenode/ip.1.23.220.37] has quit [Quit: Page closed]
Dec 17 12:13:35 <woglinde> sorry
Dec 17 12:13:38 <woglinde> hm
Dec 17 12:13:45 <woglinde> you got me again
Dec 17 12:14:22 <woglinde> will leave now
Dec 17 12:16:48 <KotH> lol
Dec 17 12:24:58 <_av500_> :)
Dec 17 12:32:52 <beaglenoob> just got my new bbb hooked up
Dec 17 12:33:43 <beaglenoob> what is the default network config... will it get a dhcp address so i can ssh to it?
Dec 17 12:43:16 <_av500_> yes
Dec 17 12:43:18 <_av500_> it should
Dec 17 12:45:56 <beaglenoob> had to power cycle, but i can reach ssh now
Dec 17 15:42:19 <Old_Man> How can I boot into the built-in Angstrom distribution of a BBB from U-boot, if there is an SD inserted?
Dec 17 15:42:38 <Old_Man> (I do not have physical access to the device to remove the MicroSD card.)
Dec 17 15:44:13 <Old_Man> (However, I do have a serial connection to it, so I am minicom'ed into it just fine, and see the U-Boot# prompt.)
Dec 17 16:38:01 <thurgood_> Old_Man: change the rootfs in uEnv.txt if it points to something like mmcblk0p2 ... to use a UUID for the emmc
Dec 17 16:40:10 <Old_Man> I cannot edit uEnv.txt right now... I am stuck at the U-Boot# prompt. Is there no command to do it from here?
Dec 17 16:40:39 <thurgood_> you can modify bootcmd from uboot
Dec 17 16:41:07 <thurgood_> or any other variable used to boot
Dec 17 16:41:41 <Old_Man> I don't know how; I've never used U-Boot before. Got a minute to walk me through?
Dec 17 16:42:13 <thurgood_> firt try printenv to see what's already set
Dec 17 16:42:20 <thurgood_> first even
Dec 17 16:44:05 <thurgood_> is there a rootfs variable set?
Dec 17 16:44:22 <Old_Man> No, there's not.
Dec 17 16:44:59 <thurgood_> maybe mmcroot?
Dec 17 16:45:35 <Old_Man> http://pastebin.com/WVpW3eqv
Dec 17 16:46:05 <Old_Man> Yep, mmcroot is /dev/mmcblk0p2 ro
Dec 17 16:47:44 <thurgood_> for now try... setenv mmcroot '/dev/mmcblk1p4'
Dec 17 16:48:10 <thurgood_> may want to keep the ro at the end, not sure
Dec 17 16:48:46 <Old_Man> I'll try that first. What next? "boot"?
Dec 17 16:49:08 <thurgood_> then try.... run mmcboot
Dec 17 16:50:06 <Old_Man> Booting from mmc ... / Wrong Image Format for bootm command / ERROR: can't get kernel image!
Dec 17 16:50:54 <Old_Man> Shall I try it again without the "ro" or do you suspect that's not pointing to the right device?
Dec 17 16:51:36 <thurgood_> it may not be the right partition... the device should be correct
Dec 17 16:51:57 <Old_Man> Is there a way to get a list of partitions from U-Boot?
Dec 17 16:52:15 <thurgood_> p3 not p4
Dec 17 16:52:53 <Old_Man> Same error.
Dec 17 16:54:31 <thurgood_> not sure about all the uboot command for listing stuff you can try ? at the prompt
Dec 17 16:56:27 <thurgood_> don't have a bbb wit me at the moment, unfortunately
Dec 17 16:58:24 <Old_Man> Shouldn't this be  uniform, though... the partition Angstrom is installed on should be the same across all BBBs, yes? So I should be able to find it documented somewhere, but I can't seem to.
Dec 17 16:58:53 <thurgood_> yes
Dec 17 16:59:03 <thurgood_> looking it up currently
Dec 17 16:59:20 <thurgood_> http://www.crashcourse.ca/wiki/index.php/EMMC_on_the_BBB
Dec 17 17:00:01 <thurgood_> try mmcbl1p2
Dec 17 17:00:08 <thurgood_> mmcblk1p2
Dec 17 17:01:59 <thurgood_> looks like neither p3 or p4 are vaild partitions in the default setup, sorry for misleading you
Dec 17 17:02:49 <Old_Man> No worries; you're getting me a lot closer than anything else I've tried. :) Thanks!
Dec 17 17:02:56 <Old_Man> Same error, though, both with and without the "ro"
Dec 17 17:03:06 <thurgood_> there are two dang
Dec 17 17:03:28 <thurgood_> wish I had my board here
Dec 17 17:03:51 <Old_Man> I ran the "mmc dev 1" and "mmc part" commands from that example and got much the same output they did.
Dec 17 17:04:36 <thurgood_> can you repost your printenv results now?
Dec 17 17:05:49 <Old_Man> http://pastebin.com/nxHDvQEs
Dec 17 17:07:34 <thurgood_> you said you had an Angstrom image on the emmc?
Dec 17 17:07:59 <Old_Man> Yep; it booted just fine last time I had physical access to remove the SD card. :)
Dec 17 17:08:20 <Old_Man> (It should be factory-fresh and default; I think I didn't even update it.)
Dec 17 17:09:18 <thurgood_> I /think/ Angstrom may still have the uImage file in the root of p1 rather than /boot on p2
Dec 17 17:10:21 <thurgood_> try setenv bootdir '/'
Dec 17 17:10:55 <thurgood_> setenv mmcroot = mmcblk1p1
Dec 17 17:11:14 <thurgood_> then run mmcboot
Dec 17 17:11:35 <thurgood_> no = in the second command...
Dec 17 17:12:10 <Old_Man> Same error: "Wrong Image Format for bootm command" then "ERROR: can't get kernel image!"
Dec 17 17:13:00 <Old_Man> Same thing when I change bootdir back to /boot
Dec 17 17:16:00 <thurgood_> looking through your args some more
Dec 17 17:16:10 <Old_Man> Do you think it might have anything to do with this? mmcrootfstype=ext4 rootwait
Dec 17 17:16:19 <Old_Man> Isn't something vfat on the default?
Dec 17 17:17:07 <kervs> hi all
Dec 17 17:17:29 <thurgood_> it used to be, not sure on your system
Dec 17 17:18:38 <kervs> i am totally new to beaglebone.... and i have read around but nothing seems to answer my question. its just become an Blur.
Dec 17 17:19:14 <Old_Man> Hi kervs
Dec 17 17:19:43 <Old_Man> Okay thurgood_... the failure when I boot says "** Unrecognized filesystem type **" and dumps me to the U-Boot# prompt.
Dec 17 17:20:06 <Old_Man> So I'm guessing that's the culprit on this failed Fedora 21 install, that renders this SD unusable.
Dec 17 17:20:34 <Old_Man> Any guesses as to what I should set that "mmcrootfstype" to, in order to see if I can get it to boot off its internal partition?
Dec 17 17:21:01 <kervs> i know it is possible to load Android onto a BeagleBone. But installing android kitkat onto BeagleBone will be be exactly like nexus7? i have external usb device can i just plug it onto the beagle without having to source for drivers if it works for Kit kat nexus7??
Dec 17 17:21:13 <thurgood_> normally the rootfstype is ext3 now
Dec 17 17:21:38 <thurgood_> but fedora may be different
Dec 17 17:21:39 <Old_Man> Well, this device is for sure several months old, at least.
Dec 17 17:22:43 <thurgood_> the nexus 7 is I believe android 5 rowboat is probably at 4.2.2
Dec 17 17:25:56 <thurgood_> Old_Man: it looks like your env is not actually loading the kernel into memory before trying to bootm
Dec 17 17:27:09 <thurgood_> do you have linewrap turned on in your terminal?
Dec 17 17:28:07 <Old_Man> Um, I guess?
Dec 17 17:30:40 <thurgood_> what happens if you use: setenv bootpart 1:2
Dec 17 17:31:20 <thurgood_> then: run loaduimage
Dec 17 17:31:47 <thurgood_> then: run mmcboot
Dec 17 17:31:54 <Old_Man> 4385024 bytes read in 764 ms (5.5 MiB/s)
Dec 17 17:32:08 <thurgood_> that's promising
Dec 17 17:32:23 <Old_Man> Woops
Dec 17 17:32:29 <thurgood_> that's about the size of uimage
Dec 17 17:32:34 <Old_Man> I had reset it... I got a kernel panic for being unable to mount root fs
Dec 17 17:32:46 <Old_Man> I need to reset mmcroot to /dev/mmcblk1p1, yes?
Dec 17 17:32:48 <Old_Man> or 2?
Dec 17 17:32:50 <thurgood_> oh
Dec 17 17:32:53 <thurgood_> p2
Dec 17 17:33:00 <Old_Man> Thanks; standby one
Dec 17 17:33:23 <Old_Man> Oh dammit... the kernel panic hung my minicom session.
Dec 17 17:33:27 <Old_Man> Can't reset it any more.
Dec 17 17:33:36 <thurgood_> eek
Dec 17 17:33:39 <Old_Man> Now I'll have to wait 'til I get back to where it's located, to hard-reset it. Bummer.
Dec 17 17:33:51 <Old_Man> Thanks for the help, anyway... I took some notes; may be able to do something useful in the future. :)
Dec 17 17:35:34 <thurgood_> no problem
Dec 17 17:36:46 <thurgood_> you can't restart minicom from your location?
Dec 17 17:37:10 <Old_Man> Yeah, I did, and I sent a "break" to it, but the BBB is hung here after the kernel crash:
Dec 17 17:37:19 <Old_Man> [  226.017234] SysRq : HELP : loglevel(0-9) reBoot Crash terminate-all-tasks(E)
Dec 17 17:37:34 <Old_Man> Then it fails to reset.
Dec 17 17:38:12 <thurgood_> oh, so the kernel is not reseting :/
Dec 17 17:38:30 <Old_Man> Yep.
Dec 17 17:38:43 <thurgood_> but you are into the kernel.... sort a step in the right direction but the end of the road for now
Dec 17 17:38:54 <Old_Man> Needs a power cord yank, I guess. But if I were there to yank the power cord, I could also remove the SD card and boot it the easy way. :)
Dec 17 17:39:14 <thurgood_> yup
Dec 17 17:39:34 <Old_Man> Yeah, I think you were probably on the right path.
Dec 17 17:39:54 <Old_Man> Just, this thing needs more documentation.
Dec 17 21:15:08 <nullphy> I have a beaglebone black locking up and /var/log/messages has blessed me with this information. Any ideas where I can start? http://pastebin.com/raw.php?i=8XRCcSHU
Dec 17 21:24:56 <pradekumar> i am not getting how set date can any one help me
Dec 17 21:26:24 <knob> Hello everyone!
Dec 17 21:26:42 <knob> Finally, downloading the latest Debian image, dropping it into the SD card, and powering up my BeagleBone for the first time! w00t w00t!
Dec 17 21:26:49 <nullphy> pradekumar, date --set 13:24:00 and date --set 2104-12-17
Dec 17 21:27:34 <nullphy> knob: i remmeber how excited i was, good luck!
Dec 17 21:27:48 <knob> Thanks!! =)   Will update ASAP
Dec 17 21:27:57 <nullphy> knob: are you using class 10 sdcard?
Dec 17 21:28:11 <knob> checking
Dec 17 21:28:18 <pradekumar> as soon as we connect the board to computer on site we need to get set date option right
Dec 17 21:28:25 <knob> no sir... it's a class2
Dec 17 21:28:27 <pradekumar> but i am not getting that in the site
Dec 17 21:28:28 <knob> Do I need class 10?
Dec 17 21:30:53 <knob> nullphy, do I need class10?
Dec 17 21:33:02 <nullphy> It's just faster.
Dec 17 21:34:04 <knob> ok ok
Dec 17 21:34:06 <knob> thank you
Dec 17 21:34:34 <py0> does anyone else's bbb rev c hang on serial connect
Dec 17 21:34:40 <py0> it does this all the time
Dec 17 21:36:29 <nullphy> py0: yes mine does with linux gadget
Dec 17 21:36:37 <py0> :|
Dec 17 21:36:39 <nullphy> it is annoying
Dec 17 21:36:52 <nullphy> although mine locks up without too ;)
Dec 17 21:37:11 <nullphy> i think i have a usb wireless device that is suspect
Dec 17 21:37:38 <py0> I'm using all brand new stuff from adafruit
Dec 17 21:37:52 <py0> it's a miracle if I get to use it through serial -_-
Dec 17 21:40:36 <nullphy> py0: your using gadget?
Dec 17 21:40:50 <py0> no
Dec 17 21:41:02 <nullphy> are you using the usb to wifi?
Dec 17 21:41:14 <nullphy> i'm sorry usb to ethernet
Dec 17 21:41:19 <nullphy> haha
Dec 17 21:41:20 <py0> no
Dec 17 21:41:48 <nullphy> i use g_serial
Dec 17 21:48:04 <nullphy> modprobe g_serial, if you want it on boot add g_serial to /etc/modules
Dec 18 01:04:02 <beaglenoob> if i understand this correctly, the beaglebone will first boot off sd, if no sd is present then it will boot from emmc
Dec 18 01:04:09 <agmlego> Yes.
Dec 18 01:05:37 <ds2> eh?
Dec 18 01:06:31 <jpfau> I thought you needed to hold down one of the buttons to boot off of SD
Dec 18 01:06:43 <jpfau> maybe you can tinker with the uEnv.txt, I forget
Dec 18 01:10:58 <agmlego> As far as I am aware it will boot off the SD card if it is present.
Dec 18 01:11:21 <agmlego> THis is after all how you fix a bad flashing of the eMMC; use a flasher image on the SD card.
Dec 18 01:12:12 <j0rd> for me that requiers holding the boot down for ~= 4 seconds when applying power w/ a microSD card present
Dec 18 01:12:35 <j0rd> s/boot/boot button/
Dec 18 01:12:43 <ds2> you need to hold down the user button then power on
Dec 18 01:13:20 <ds2> agmlego: it will still try eMMC first. a lot of u-boot's out there will scan for the uSD and load the kernel from there if it is present
Dec 18 01:13:48 <nullphy> beaglenoob: if the build in eMMc has not been provisioned and is blank, it will boot from sdcard first. if you have compiled a working OS like debian on the eMMC you have to hold the user button down to boot from the sdcard slot.
Dec 18 01:14:13 <nullphy> built*
Dec 18 01:16:02 <agmlego> ds2: ::shrugs:: OK. Then the ones I have work differently than how yours work.
Dec 18 01:17:38 <beaglenoob> hmm, seems more ideal if it would default to sd card. then i could have an os on each and to fall back to emmc would be as simple as removing the card. kind of a pain to push the button every time the thing boots.
Dec 18 01:18:17 <agmlego> beaglenoob: As ds2 says, it is possible to reconfigure uBoot to use the SD card first.
Dec 18 01:22:24 <nullphy> yea it's going to be in uEnv.txt look google setmmcroot
Dec 18 01:26:41 <ds2> agmlego: check the SYSBOOT configuration against the TRM
Dec 18 01:27:35 <agmlego> ds2: Why?
Dec 18 01:28:13 <ds2> that will be the authoritative source
Dec 18 01:28:18 <ds2> anything else is hearsay :D
Dec 18 01:30:07 <agmlego> ds2: Including the boards I have in my possession? ;-P
Dec 18 01:33:04 <ds2> agmlego: just the BB
Dec 18 01:53:00 <Sifoo> hello
Dec 18 01:55:11 <tb__> anyone here buy the new Derek Molloy beaglebone book yet, on Kindle?
Dec 18 01:56:55 <tb__> There are some benchmark results in one of the chapters--c++ vs several other languages, including node.js
Dec 18 02:03:43 <Sifoo> Can BBB support BACnet MS/TP Communication?
Dec 18 02:06:09 <agmlego> Probably. Can you write or find a protocol-level driver for it for Linux on ARM?
Dec 18 02:06:25 <agmlego> Also, I assume you intend to use BACNet over Ethernet.
Dec 18 02:06:51 <agmlego> RS-232 or RS-485 will require extra hardware but are still possible.
Dec 18 02:08:11 <agmlego> LonTalk may not be possible, or only possible with dedicated hardware and some PRU magic.
Dec 18 02:10:26 <Sifoo> Yep, I heard of that there is a RS485 cape from the TI white paper? Has anyone done an example?
Dec 18 02:11:03 <agmlego> An example of using RS-485 in general, or doing BACNet over RS-485?
Dec 18 02:11:38 <Sifoo> BACnet over RS485
Dec 18 02:12:15 <agmlego> Have you tried finding out somewhere other than this channel?
Dec 18 02:13:08 <Sifoo> Actually I am fresh to this area, any suggestion on other channels?
Dec 18 02:13:25 <agmlego> I was thinking more something like Google. ;-P
Dec 18 02:13:40 <tb__> lol
Dec 18 02:13:47 <Sifoo> lol
Dec 18 02:13:58 <agmlego> There looks like a lot of info on the subject, accessed by "beaglebone bacnet".
Dec 18 02:14:17 <beaglenoob_> I am enjoying the bacnet faq: "The first is Ethernet, the fastest at 10 Mbps with 100 Mbps also recently available. ("Mbps" stands for "millions of bits per second.") Ethernet is also likely to be the most expensive in terms of cost per device."
Dec 18 02:14:28 <beaglenoob_> it's a bit dated
Dec 18 02:15:01 <agmlego> Looks a lot like BACNet is to the commercial sector what MODBUS is to the industrial.
Dec 18 02:15:12 <agmlego> i.e. dead or dying.
Dec 18 02:16:01 <Sifoo> BACnet is widely used in Building Automation
Dec 18 02:16:08 <Sifoo> DDC communication
Dec 18 02:16:23 <agmlego> Yeah, I can read a WIkipedia article too. ;-P
Dec 18 02:16:50 <agmlego> All the building automation I have ever seen uses CAN or Ethernet or an 802.15.4-based wireless mesh.
Dec 18 02:17:32 <tb__> seems like Ethernet would still be pretty easy to use in that application
Dec 18 02:17:39 <agmlego> Yup.
Dec 18 02:17:58 <tb__> sockets are pretty handy
Dec 18 02:18:22 <agmlego> Yup.
Dec 18 02:18:23 <tb__> never really used CAN though, so I can't speak to that
Dec 18 02:19:02 <Sifoo> you are all experienced guys, nice to meet ya
Dec 18 02:19:21 <tb__> well, i've used sockets a little bit...over Ethernet
Dec 18 02:19:35 <tb__> granted it was in C#, but still
Dec 18 02:19:59 <Sifoo> me too, C#, modbus RS485, collecting data
Dec 18 02:20:19 <beaglenoob_> i use sockets over ip lol
Dec 18 02:20:20 <tb__> what's the difference between RS232 and RS485?
Dec 18 02:20:27 <tb__> never used RS485
Dec 18 02:20:32 <agmlego> tb__: 485 is differential.
Dec 18 02:20:38 <agmlego> And multi-tap.
Dec 18 02:20:44 <agmlego> 232 is...not
Dec 18 02:21:02 <tb__> can you give me an example where that is useful?
Dec 18 02:21:03 <agmlego> Sifoo: Not really any such thing as a socket in RS485.
Dec 18 02:21:10 <agmlego> tb__: >10m.
Dec 18 02:21:15 <tb__> ah
Dec 18 02:21:16 <Sifoo> noise immuse
Dec 18 02:21:23 <tb__> i see
Dec 18 02:21:25 <agmlego> tb__: Also, >2 devices.
Dec 18 02:21:47 <tb__> i've never had an occasion to need to go that far
Dec 18 02:21:56 <tb__> >2 devices would be handy i can see
Dec 18 02:21:59 <agmlego> tb__: Yet. ;-P
Dec 18 02:22:26 <Sifoo> well, there is "Socket" when I was programming, I am fresh, :P
Dec 18 02:22:28 <tb__> since i mainly now work on embedded apps with robotics stuff...
Dec 18 02:22:45 <tb__> although--i've always wanted to do an underwater ROV
Dec 18 02:22:54 <tb__> that would definitely be more than 10m!
Dec 18 02:23:20 <agmlego> And also probably not a good application for RS485.
Dec 18 02:23:22 <tb__> is RS485 harder to work with?
Dec 18 02:23:28 <agmlego> Define: harder.
Dec 18 02:23:43 <tb__> well, more finicky
Dec 18 02:23:53 <agmlego> Define: finicky
Dec 18 02:24:11 <Sifoo> linux hobby, haha
Dec 18 02:24:33 <tb__> hard to ask specific questions about a protocol when you are trying to get the basics of the protocol
Dec 18 02:24:50 <tb__> use your imagination?
Dec 18 02:25:12 <agmlego> tb__: OK, so, RS485 and RS232 differ solely in hardware--the same data protocol runs on both.
Dec 18 02:25:23 <tb__> ah, that's good enough
Dec 18 02:25:30 <tb__> so no...it's not harder
Dec 18 02:25:37 <agmlego> There exist common off-the-shelf transcievers that convert one to the other.
Dec 18 02:25:42 <tb__> ok
Dec 18 02:25:48 <agmlego> Cabling can be any twisted pair, such as Cat5.
Dec 18 02:25:55 <tb__> gotcha
Dec 18 02:26:13 <tb__> if i ever get the ROV thing going, i'll definitely look at it
Dec 18 02:26:13 <agmlego> (all of which can be found in the Wikipedia article on RS485. ;-P)
Dec 18 02:26:28 <agmlego> The ROV thing is probably an incorect application for the bus.
Dec 18 02:26:30 <tb__> yeah, not really interested more than superficially right now
Dec 18 02:26:53 <tb__> one think on Wikipedia usually leads to another, and then another...
Dec 18 02:27:37 <tb__> leading to a (seemingly) infinite session of link-surfing, terminated only by the onset of sleep
Dec 18 02:27:43 <tb__> there goes another night
Dec 18 02:27:50 <agmlego> THis is what willpower is for. ;-P
Dec 18 02:27:54 <tb__> s/think/thing
Dec 18 02:28:23 <tb__> or, a simple question asking for a one/two sentence answer in the on-going discussion in an IRC channel
Dec 18 02:28:43 <tb__> ;)
Dec 18 02:29:23 <agmlego> You say "simple question" and yet you ask literally the world's worst type of question.
Dec 18 02:30:01 <tb__> yet you answered it with one or two simple sentences, after you got your digs in
Dec 18 02:30:03 <tb__> lol
Dec 18 02:30:09 <tb__> i can play the game too
Dec 18 02:30:18 <tb__> been there, done that. got the T-shirt
Dec 18 02:30:28 <tb__> be careful what you wish for
Dec 18 02:30:29 <ds2> only a T-shirt?
Dec 18 02:30:45 <tb__> well, one shouldn't boast?
Dec 18 02:31:12 <ds2> should be more swag
Dec 18 02:31:25 <tb__> not really my thing, sorry
Dec 18 02:31:46 <tb__> i did get a secret code ring once though
Dec 18 02:31:51 <agmlego> tb__: Yeah, OK, that behavior, right there? That is what is wrong with this channel, why it is full of trolls and little else, and why basically everyone I know with knowledge on the subject avoids it like the plague.
Dec 18 02:32:05 <tb__> give me a break
Dec 18 02:32:08 <agmlego> No.
Dec 18 02:32:19 <tb__> you are a bit on the arrogant side, when you know absolutely about me
Dec 18 02:32:32 <tb__> i admitted right up front that i had never worked on it
Dec 18 02:32:42 <tb__> if you want to whip out resumes, let's throw down
Dec 18 02:32:48 <tb__> you might be surprised
Dec 18 02:32:52 <tb__> i don't want to go there
Dec 18 02:32:57 <agmlego> OK.
Dec 18 02:32:59 <tb__> but you seem persistent
Dec 18 02:33:17 <tb__> "look at me...i know lots of stuff"
Dec 18 02:33:27 <tb__> great, you're a God on RS485.
Dec 18 02:33:29 <tb__> you win
Dec 18 02:33:33 <tb__> can we move on?
Dec 18 02:34:21 <agmlego> ::shrugs:: Can we?
Dec 18 02:34:41 <tb__> remains to be seen I suppose
Dec 18 02:35:27 <tb__> i will say though, that it's been a LONG time since I've been accused of being a "troll"
Dec 18 02:35:28 <tb__> LOL
Dec 18 02:36:00 <ds2> resumes? enough hot air already
Dec 18 02:36:22 <agmlego> ds2: But....balloons!
Dec 18 02:36:54 <tb__> yeah, reductio ad absurdum, i'll give you that
Dec 18 02:38:00 <tb__> so...which language is best?!?!
Dec 18 02:38:07 <tb__> <just kidding>
Dec 18 02:39:00 <tb__> serious point though--reading about the performance of node.js, i was very surprised at how well it does
Dec 18 02:40:59 <ds2> the beagle uses a pretty fast processor :D
Dec 18 02:41:47 <tb__> indeed
Dec 18 02:42:08 <tb__> that and Google
Dec 18 02:42:31 <tb__> (specifically, the V8 engine I've been reading about)
Dec 18 02:48:11 <py0> I have a beaglebone black running nginx. I can only see my website (domain name not ip.. everything's forwarded properly etc) from my network that the beagle is on and nobody else can view it. I've tried forwarding 80 and 443 (ssl) and turned on dmz for it but no dice
Dec 18 02:48:14 <py0> idk what I'm doing wrong
Dec 18 02:48:52 <agmlego> What domain?
Dec 18 02:50:30 <py0> that's negligible, I can confirm it does not work
Dec 18 02:50:43 <agmlego> ...ok.
Dec 18 02:50:58 <py0> not ready for the public yet
Dec 18 02:51:09 <agmlego> What kind of router? Running what firmware? WHo is your ISP? Where are you located?
Dec 18 02:51:58 <py0> pm?
Dec 18 02:52:22 <agmlego> Nope.
Dec 18 02:52:24 <ddrown> py0: do you know for sure that your ISP isn't blocking 80/443? that's a common thing for residential ISPs to do
Dec 18 02:52:28 <agmlego> ^^^
Dec 18 02:52:40 <py0> :|
Dec 18 02:52:56 <py0> how do you test for that
Dec 18 02:53:04 <ddrown> you'll see a lot of port 8080 on dynamic dns websites because of it
Dec 18 02:53:19 <ddrown> you can try a different port
Dec 18 02:53:50 <agmlego> py0: Either hand the domain to someone, or use one of the many port-forward-check websites out there, or let us know your ISP.
Dec 18 02:54:01 <agmlego> Or GOogle "$your_ISP port blocking"
Dec 18 02:54:25 <py0> time warner cable
Dec 18 02:54:39 <tb__> i have TWC
Dec 18 02:54:47 <tb__> they don't block port 80 where i live
Dec 18 02:54:54 <tb__> Wisconsin
Dec 18 02:55:26 <tb__> well, at least they didn't a year ago when i had a little webserver going
Dec 18 02:58:15 <ddrown> yeah, I have TWC in Texas and they allow port 80 through
Dec 18 02:58:36 <ddrown> so you might have a router port forwarding problem
Dec 18 02:58:49 <ddrown> I know the DG1670 firmware has bugs when it comes to port forwarding
Dec 18 02:58:50 <tb__> hmmm...come to think of it though, i did have a "commercial" account then. static ip
Dec 18 02:59:00 <ddrown> I have a normal residential account
Dec 18 02:59:03 <tb__> do you have a residential...ok
Dec 18 02:59:35 <ddrown> I think that has changed recently, I seem to remember them blocking port 80 previously
Dec 18 02:59:46 <py0> http://i.imgur.com/IXUETao.png
Dec 18 02:59:47 <tb__> ok
**** ENDING LOGGING AT Thu Dec 18 02:59:58 2014