**** BEGIN LOGGING AT Sat Apr 01 03:00:03 2017
Apr 01 05:17:45 <ayjay_t> hmm yeah beaglebone uses those names
Apr 01 05:17:52 <ayjay_t> i read about it, you can revert it
Apr 01 05:18:06 <ayjay_t> i remember it wasn't too hard to google
Apr 01 05:18:09 <ayjay_t> sorry i'm not a lot of help though
Apr 01 05:18:23 <ayjay_t> there is a reason to use those long names, although i forget that too
Apr 01 07:00:16 <ericxdu> danlikesrobots: hi stranger
Apr 01 07:01:04 <ericxdu> ray02
Apr 01 07:01:04 <ericxdu> Gone
Apr 01 07:01:09 <ericxdu> I'm too slow :-P
Apr 01 10:31:00 <mistawright> @jkridner, you may be able to tell me this. what kind of resistors are used on the beaglebone black? I need to build the bbbmini cape but voltage isnt mentioned for the type of resistors needed
Apr 01 10:33:14 <ver|laptop> mistawright: the schematics are available for the BBB ...
Apr 01 10:33:27 <ver|laptop> if you know what you're looking for .. the filename is BBB_SCH.pdf :)
Apr 01 10:36:10 <mistawright> ver|laptop, im using the bbbmini cape. it uses some resistors for power input and adc. but it doesnt tell wattage. I had a supplier in tampa that would have given me the 6 or so resistors i needed but they needed to know wattage of the resistors
Apr 01 10:36:23 <mistawright> i figured it was just the ohm rating
Apr 01 10:36:52 <mistawright> https://github.com/mirkix/BBBMINI/blob/master/doc/hardware/hardware.md on step 2 the values are listed
Apr 01 10:36:58 <ver|laptop> no .. that'll be power dissipation
Apr 01 10:37:17 <ver|laptop> 0.1W is common for 0805/0603 resistors .. depends on the physical size basically
Apr 01 10:38:23 <mistawright> thanks
Apr 01 10:38:44 <ver|laptop> oh if you're looking for through-hole .. 0.6W is common for metal-film :D
Apr 01 10:39:13 <ver|laptop> 0.25W I think for carbon film iirc.
Apr 01 10:40:13 <ver|laptop> where through-hole components are concerned, you don't have so many options/constraints :D
Apr 01 10:43:19 <mistawright> ver|laptop, is there an actual 20k resistor? i havent found one in searching but find 22k easily
Apr 01 10:43:53 <ver|laptop> it does exist .. you might need to switch to 1% tolerance .. ie. erm .. E24 series? or possibly E48
Apr 01 10:44:19 <ver|laptop> E12 is the most common, but fewest values (hance the '12' iirc :])
Apr 01 10:47:26 <mistawright> ver|laptop, https://www.amazon.com/Cutequeen-3325-Values-Resistor-25pcs/dp/B017L9GKGK/ref=sr_1_10?s=industrial&ie=UTF8&qid=1491043515&sr=1-10&keywords=20k+resistor+1%25 i think this may be what i need
Apr 01 10:47:31 <mistawright> would this work
Apr 01 10:50:10 <ver|laptop> mistawright: that'll give you a good start :) sure
Apr 01 10:54:57 <mistawright> thanks, ill order it prime same delivery hopefully i can make some progress
Apr 01 10:55:34 <ver|laptop> good luck :]
Apr 01 10:58:09 <mistawright> thanks
Apr 01 13:48:34 <thinkfat> zmatt: you won't believe what the bug is...
Apr 01 13:49:04 <thinkfat> zmatt: the cti comes up in integration test mode :-)
Apr 01 13:50:25 <thinkfat> zmatt: that's the reason it doesn't react normally
Apr 01 13:51:21 <thinkfat> zmatt: and I believe your idea about the botched reset is true, the CTI just comes up with a '1' in all writeable bits and one of them happens to control the integration test mode
Apr 01 13:52:01 <thinkfat> zmatt: when I set 0x80002f00 to 0, suddenly the module starts to behave just per spec
Apr 01 13:54:09 <thinkfat> zmatt: then I only need to clear out the crap in the registers and I'm good to go
Apr 01 13:54:41 <zmatt> hah
Apr 01 13:55:30 <zmatt> yes, they absolutely used the wrong reset line :)
Apr 01 14:00:39 <thinkfat> in fact I only need to do two things: disable integration test mode and disable the cti, and immediately the a8 is back
Apr 01 14:14:28 <zmatt> it's strange though that only the CTI is affected
Apr 01 14:15:39 <zmatt> since CTI is reset by the ATB reset (ATRESETn), which is required to be asserted/deasserted at the same time as the debug logic reset (PRESETn)
Apr 01 14:20:28 <zmatt> probably it was once the intention to allow debug/trace to remain powered during mpu powerdown, but that got lost somewhere along the way
Apr 01 14:22:20 <mistawright> so i went to radioshack and got some resistors that are 1/2 watt resistors. https://github.com/mirkix/BBBMINI/blob/master/doc/hardware/hardware.md this page, on step 2 lists the values i need. i have a 1k and 2.2k. can the 2.2k be used in place of the 2k? also i have a 22k resitor can it be used in place of a 20k?
Apr 01 14:22:32 <mistawright> any help would be appreciated
Apr 01 14:23:46 <zmatt> no, they specify high-precision 0.1% resistors
Apr 01 14:26:45 <zmatt> making a 3.3V supply from a 5V supply using a resistor divider network is really disgusting though :/
Apr 01 14:27:09 <mistawright> lol
Apr 01 14:27:56 <tbr> there are parts that are probably cheaper than the "resisors" used in this
Apr 01 14:28:27 <mistawright> i didn't design. would have used a pololu module for that
Apr 01 14:28:31 * tbr has strips of 100 each 5V and 3.3V regulators as SMD parts
Apr 01 14:31:05 <zmatt> what is it doing anyway?
Apr 01 14:31:25 <mistawright> the cape?
Apr 01 14:31:28 <zmatt> it's just pin 4 of some header -> resistor divider -> gpio of the BBB
Apr 01 14:32:04 <mistawright> I'm using a pdb that provides 5.4 volts. could that applied directly to the bealebone black>
Apr 01 14:32:05 <mistawright> ?
Apr 01 14:32:32 <tbr> no
Apr 01 14:32:41 <tbr> most of the BBB pins are 3.3V
Apr 01 14:33:00 <zmatt> unless you meant as power input
Apr 01 14:33:07 <mistawright> input yes
Apr 01 14:33:08 <zmatt> in that case probably still no
Apr 01 14:33:09 <tbr> if it's a signal and not a supply voltage use a proper transmogrifier
Apr 01 14:33:28 <mistawright> i just need power to the cape
Apr 01 14:34:46 <zmatt> hmm, you might get away with using 5.4 V, though I wouldn't be very comfortable about it
Apr 01 14:35:22 <zmatt> it also means that voltage ends up on the usb host port which is definitely higher than permitted by the usb spec
Apr 01 14:35:41 <mistawright> http://www.readytoflyquads.com/mini-power-distribution-board-with-2-bec-apmsensor
Apr 01 14:36:12 <mistawright> ive got one of these guys. it also has an adjustable voltage out in case i don't use there 5 volt out
Apr 01 14:37:25 <zmatt> any 5V supply of adequate power works
Apr 01 14:37:59 <mistawright> so i also had a power supply for my beaglebone black that shorted. but i am not sure if the dashed line is postive or negative. i know the beaglebone black is center positive. not sure how to check for that with a voltmeter as of yet. i know it shows negative voltage depending on how its hooked
Apr 01 14:39:18 <mistawright> zmatt, what about connecting a wire for ground and a 5 volt wire on p9.5 or p9.6 on the cape. would that be safe?
Apr 01 14:39:34 <zmatt> under no circumstance
Apr 01 14:39:41 <zmatt> oh wait
Apr 01 14:39:44 <zmatt> sorry
Apr 01 14:39:54 <zmatt> whenever I see P9/P8 I think I/O
Apr 01 14:40:38 <mistawright> im scared as shit right now. i don't want to smell white smoke from my beaglebone black
Apr 01 14:40:50 <mistawright> so i just want to double check
Apr 01 14:41:59 <zmatt> yes .5/.6 is the right set for 5V input, it ties directly to the center pin of the 5V barrel jack
Apr 01 14:43:45 <zmatt> and yes it's good to double-check these things... in the neighbourhood of a modern SoC, anything that's 5V should be regarded as if there's a sign "DANGER - HIGH VOLTAGE"
Apr 01 14:43:54 <thinkfat> zmatt: ARM recommends the "OS Save&Restore" procedure for debug over powerdown
Apr 01 14:44:12 <thinkfat> zmatt: but that of course demands that the core actually starts to execute code
Apr 01 14:44:15 <zmatt> thinkfat: sure, but that assumes you can safely arrive in the restore code of the OS
Apr 01 14:44:18 <zmatt> that
Apr 01 14:46:23 <zmatt> btw, have you tried using the "force power" (but not force clock) bits of icepick to prevent the a8 (specifically its debug logic) from actually losing power?  I have no idea what impact that has on resets, or whether this prevents the module from entering powerdown in a way that's good enough to satisfy the m3
Apr 01 14:47:09 <thinkfat> the m3 wouldn't even notice, I think, since it is the one to pull the plug.
Apr 01 14:47:38 <thinkfat> but I didn't yet check that
Apr 01 14:47:39 <zmatt> well maybe it prevents idleack
Apr 01 14:48:02 <zmatt> or prevents mpu reset
Apr 01 14:48:03 <thinkfat> won't know it till you try it ...
Apr 01 14:48:20 <thinkfat> it 'should' prevent MPU PD OFF
Apr 01 14:48:37 <zmatt> yes but technically in a way that application shouldn't notice
Apr 01 14:48:43 <thinkfat> let's try
Apr 01 14:48:54 <thinkfat> it's easy enough
Apr 01 14:49:07 <zmatt> dunno which of the two registers
Apr 01 14:55:20 <zmatt> ok, afk
Apr 01 16:21:44 <mistawright> zmatt, i am able to power the beaglebone through the pins and vdd_5 with 5 volts from a usb adapter. trying my beck that reads 5.4v it doesnt boot. nor with me dropping the adjustable output to 5.23 volts. it wouldnt let me go any lower
Apr 01 16:28:06 <sklv> hi, i'm trying to draw a cape for BBB. i'm wondering why an elinux article says "You CAN NOT use SPI1 on the BeagleBone Black WITHOUT disabling the HDMI interface " as SPI1 can be configured to be on P9 pins 28-31 in mode3, which don't conflict with the emmc or lcd pins?
Apr 01 16:34:26 <mistawright> certain pins have multiple roles
Apr 01 16:34:35 <mistawright> hdmi disables some spi pins i believe
Apr 01 16:35:45 <sklv> according to this https://github.com/notro/fbtft/wiki/BeagleBone-Black hdmi uses p9.29
Apr 01 16:37:02 <mistawright> http://beagleboard.org/static/images/black-emmc-and-hdmi-pins.png
Apr 01 16:37:14 <mistawright> that pinout shows what is used by emmc and hdmi
Apr 01 16:37:45 <sklv> ok i see now i was misinformed as to which pins were in use by hdmi and emmc
Apr 01 17:54:53 <zmatt> sklv: they're confused
Apr 01 17:54:59 <zmatt> those pins are used by hdmi *audio*
Apr 01 18:08:34 <sklv> zmatt: so if I don't need hdmi audio i can safely configure those to mode3 and use them for SPI and the hdmi video would still work?
Apr 01 18:09:55 <zmatt> yeah, you need to explicitly disable hdmi audio though.   (side note: it should actually be possible to use hdmi audio *and* spi1 with a minor change in the kernel: the hdmi framer accepts S/PDIF output, which the am335x can generate directly.  If this is done, then hdmi audio would only occupy P9.25 and P9.28)
Apr 01 18:11:55 <sklv> zmatt: thanks
Apr 02 01:18:11 <black_13> what is the default root password for the jessie image for the beagle bone black rev c
Apr 02 01:20:28 <veremit> either 'root' or none iirc
Apr 02 01:23:26 <black_13> debian/temppwd
Apr 02 01:23:41 <black_13> http://elinux.org/BeagleBoardDebian#Debian_8_.28jessie.29
Apr 02 01:23:52 <veremit> ^ is the standard user/pwd, cirrct
Apr 02 01:24:14 <veremit> you can "sudo su" with that
Apr 02 01:24:39 <veremit> you may be able to 'passwd' but I thought root pwd -was- set
Apr 02 01:28:02 <black_13> yeah.
Apr 02 01:47:06 <black_13> next question how do i configure the ethernet
Apr 02 01:54:16 <veremit> it should auto-start and try to dhcp .. but the usual method in debian is to edit /etc/network/interfaces ..
Apr 02 01:58:17 <black_13> i have edit that.
Apr 02 01:58:27 <black_13> edited that
Apr 02 01:59:02 <black_13> auto eth0 Iface eth0 inet static address 192.168.0.25 netmask 255.255.255.0
Apr 02 02:03:04 <veremit> looks good
Apr 02 02:05:25 <black_13> does not work unfortunately
**** ENDING LOGGING AT Sun Apr 02 03:00:01 2017