**** BEGIN LOGGING AT Mon Jul 09 02:59:58 2012 Jul 09 08:40:59 I am using GPIO at a beagleboard-xm. there is a 2V difference between the ground of the board and the signal that I want to connect. Is it possible to connect an external ground to the board for the external signal? Jul 09 08:44:09 is there any source for explaining how to make physical connection on GPIO of beagleboard-xm? Jul 09 08:46:52 ? Jul 09 08:46:58 you connect something to the pin Jul 09 08:48:53 I have not connected it yet since the voltage difference is more than 1.8V Jul 09 08:49:49 then you need level shifters Jul 09 08:50:07 google should find you some answers for that Jul 09 08:50:27 yes I saw the results, thank you Jul 09 10:27:09 Hmm Jul 09 10:27:20 I forget, is the 2nd cpsw eth usable on a cape on the bone? Jul 09 10:30:13 Tartarus: I don't know if it is usable, but do you know when we can get the driver? Jul 09 10:30:33 kernel driver was merged a month or two back Jul 09 10:30:45 U-Boot should be merged into my -next branch soon Jul 09 10:31:07 Tartarus: I mean the advanced driver, that can handle two independent interfaces (dual MAC mode) Jul 09 10:31:13 Ah Jul 09 10:31:16 Lets see Jul 09 10:31:34 Gimmie 5, poking arago-project trees, sigh Jul 09 10:32:21 OK, dual mac code is now in http://arago-project.org/git/projects/?p=linux-am33x.git;a=shortlog;h=refs/heads/v3.2-staging Jul 09 10:32:43 And no, I don't know off-hand when they're planning to submit patches vs the mainline driver, and they honestly might have already Jul 09 10:33:20 Tartarus: iirc we're missing 1 or 2 pins Jul 09 10:33:31 koen: damn :( Jul 09 10:33:40 Was thinking it'd be useful for the FreedomBox folks, with a cape Jul 09 10:35:06 Tartarus: thanks. I see the patches Jul 09 11:05:17 on the user manual it says max 1.8V should be applied to the GPIO pins, is there any minimum voltage limitation for it? Jul 09 11:06:12 0 Jul 09 11:07:37 thanks Jul 09 11:09:21 the datasheet should have such stuff. I've just used human sense to come up with that valued Jul 09 11:09:29 -d Jul 09 11:14:19 do you mean datasheet of the processor or user manual of beagleboard-xm? Jul 09 11:14:42 the datasheet of the processor Jul 09 11:14:59 I will check it, thank you Jul 09 11:31:51 hey Jul 09 11:32:25 does anyone know if the beaglebone supports the linux fs gadget driver? (i need to "emulate" an usb stick) Jul 09 11:44:10 bustaa: sure, that's what the default image does too Jul 09 11:46:06 dm8tbr: nice thx! do the other usb ports support the gadget drivers ? Jul 09 11:46:22 dm8tbr: i need 2 ^_^ Jul 09 11:59:23 bustaa: I think there are two musb ports, yes. for details refer to the SRM Jul 09 12:04:28 hi Jul 09 12:08:35 Hello iam doing my project on Beagleboard Please help me anyone...i have interfaced gps receiver to the BB c4 successfully and iam able to get NMEA valid data but i have to show on the maps that means it should show excat location point on the maps can it possible in angstrom OS Jul 09 12:11:41 santo_: on the maps what do you mean? what map? Jul 09 12:12:30 hi Jul 09 12:12:41 Hello iam doing my project on Beagleboard Please help me anyone...i have interfaced gps receiver to the BB c4 successfully and iam able to get NMEA valid data but i have to show on the maps that means it should show excat location point on the maps can it possible in angstrom OS Jul 09 12:14:51 Hi! Any idea how to use tca6416 in mixed key/gpio mode? I have one port with 3 pins used as buttons and the second used as IO expander Jul 09 12:15:43 I've tried to define to i2c slaves with different drivers, but it seems to be prohibited Jul 09 12:17:59 dm8tbr: srm? Jul 09 12:18:19 dm8tbr: a k got it:P ... thx Jul 09 12:20:30 package evas-loader-pmaps is pmap? Jul 09 12:21:35 or something similar pmap for angstrom? Jul 09 14:10:09 does anyone know about a Precision Time Protocol project on the beaglebone? Jul 09 14:15:04 SmashLink: using what OS? Jul 09 14:15:22 angstrom Jul 09 14:15:57 that isn't an os, but if you are searching for something which runs on linux: http://ptpd.sourceforge.net/ Jul 09 14:26:15 nobody have a issue from eth on bb xM? sometimes the eth0 go down and i have to use ifconfig eth0 up to restart connection Jul 09 14:35:29 * stuk_gen is listen the sound of silence Jul 09 14:47:05 i am trying to access beagleboard i2c2 using memory mapping i got success with kernel 2.6.33 but no with 2.6.38 i got Bus error. Jul 09 14:47:59 googleing i found out may be the possibility that functional and interface clocks for such module could be disabled Jul 09 14:48:32 how can i enable such clocks? Jul 09 14:48:45 use the driver Jul 09 14:49:20 which driver do you mean? Jul 09 14:50:22 sata? Jul 09 14:50:54 i want to access the i2c controller registers directly through mmapping Jul 09 14:54:10 that isn't howlinux is designed to work. if you really want to dosuch, you have to change the clock-registers yourself too Jul 09 14:55:28 +2 spaces Jul 09 14:58:19 i dont understand why isn't linux is designed to work if many device drivers implement memory mapping Jul 09 14:58:55 siegen: Because the driver does the clock register work too. Jul 09 14:59:12 You *can* do the memory-mapped interface yourself, you just need to do *all* of it. Jul 09 14:59:31 ok but can i do both things Jul 09 14:59:32 i men Jul 09 15:00:18 Do which things? Jul 09 15:00:43 enabling such clocks using kernel api and then memory mapping the module i want to use Jul 09 15:00:59 I have no idea. Jul 09 15:01:02 Can you? Jul 09 15:01:15 As in, when you try to do that, does it work? Jul 09 15:02:33 the question is in my old kernel such clocks were enabled by default..i guess and now using newer kernel seems they are not Jul 09 15:03:13 so the newer kernel is better because it disables clocks which aren't needed. Jul 09 15:03:28 yes Jul 09 15:03:33 i think so Jul 09 15:03:35 :) Jul 09 15:04:41 there is a way in kernel where i can enable explicitly such clocks ... could i call some function for example in board-omap3beagle.c? Jul 09 15:04:54 sorry i am a bit lost with this issue Jul 09 16:28:41 I have a beagleboard-xm and connect one GPIO output to another GPIO as an input. GPIO output supplies 1.79 V when it is connected to a resistor/LED. However, when the output is directly connected to the input, I measure the voltage as 0.78V and cat /sys/class/gpio/gpio138/value shows 0. Isn't it possible to connect one GPIO to another, then read its value? Jul 09 16:29:46 you need to mux them correctly, as inputs and outputs as you need Jul 09 16:30:53 if you're getting 0.78 you're probably shorting something out by connecting pins both muxed as output, don't do that Jul 09 16:31:50 I set one of them "echo "low" > /..gpio/gpio138/direction" and for the other one "echo "high" > ../gpio/gpio139/direction" Jul 09 16:32:14 if you want input direction should be "in" Jul 09 16:32:36 and you also need to MUX them in on the cpu itself because that's separate from the GPIO driver Jul 09 16:33:58 W1N9Zr0: thanks a lot Jul 09 16:34:27 http://elinux.org/BeagleBoardPinMux and google how to set it either in the kernel permanently or through the debugfs driver if you're just messing around Jul 09 16:35:20 W1N9Zr0: thanks a lot again Jul 09 19:24:52 Hi, is it possible to netboot a linux image with the beagleboard? Jul 09 19:26:50 anything is possible if you put your mind to it Jul 09 19:27:45 mranostay: I know that u-boot support netboot, but I was wondering if there any limitations on the hardware side of the OMAP device? Jul 09 19:28:12 sib: bbxm or bb? Jul 09 19:28:24 mranostay: bbxm Jul 09 19:29:12 * mranostay pokes Tartarus the u-boot monkey Jul 09 19:35:18 mranostay: we usually use a different word instead of monkey Jul 09 19:38:09 does it start with a b? :) Jul 09 20:01:54 emeb: i've had my Rigol ds1052E for 2 years now, 1-yr to go on warranty. This evening I think I will perform the mod. Jul 09 20:24:24 djlewis: Good luck! Jul 09 20:25:04 I've got another buddy who has also not been in a big hurry to make the mod. Jul 09 20:34:47 emeb: yeah, I dont have to have the 100Mhz but now its bugging me more just cause I can Jul 09 20:35:21 assuming the planets are correctly aligned and my karma is cool etc. Jul 09 21:07:40 mru, http://memebase.com/2011/03/03/memes-art-of-trolling-trolling-as-a-career/ Jul 09 21:09:08 and sadly false :( Jul 09 21:10:54 mru: what is with the tools photos? Jul 09 21:11:03 you planning a bank vault heist? Jul 09 21:12:19 Crofton|work: snopes that? Jul 09 21:13:02 yeah Jul 09 21:20:53 mranostay: do you think I'd tell you if I were? Jul 09 21:21:10 no i'd hope you let me in on it :) Jul 09 21:24:10 I was about to say something about sharing the spoils Jul 09 21:24:17 i.e. not wanting to Jul 09 21:26:18 mru: you can always backstab at the last moment Jul 09 21:39:00 true Jul 09 21:46:18 of course there is an equal chance i'll do the same thing :) Jul 09 22:04:29 Hmmm Jul 09 22:14:53 Hello on the bb I can see some usb conetctors, probably for a keyboard . Jul 09 22:15:37 Is it critical to cut a usb cable form an usb keybord to say only ca. 30cm? Jul 09 22:56:30 josvuk: usb has a maximum length spec, I havent seen a minimum Jul 10 01:06:44 I used to do some arduino bs a few years back but . Heard the Beagle Bone could be used to create 3D printers so I assumed I could use it to create a 2d printer that I could create my own perameters with. Jul 10 01:07:08 Hello room, long story short, I've been cricuit bending scanners and printers for a few years now and I got bored and wanted to start builing my own printers. I saw that BeagleBone could be used to create a 3D printer so I assumed that it could also do 2d printers. I'm looking for links to image based robotics work, at least I think thats what I want. my experince with this sorta thing is a handfull of student Arduino projects but not Jul 10 01:07:42 er 2d printer? isn't that just a inkjet? :) Jul 10 01:07:49 yup Jul 10 01:08:56 why would you want to build a regular printer? :) Jul 10 01:15:49 <_av500_> one that prints PCBs Jul 10 01:16:20 no, jsut one that prints Jul 10 01:16:44 <_av500_> buy a half filled toner cartridge, most come with a printer these days.... Jul 10 01:17:59 pcb's is a good possiblilty though. but im really looking to explore the possibilities of modern printers as an approach to printmaking (art nonsense) heres a link to some of my previous work http://pattyd.com/blog/wp-content/uploads/2011/06/wpid-IMAG0207.jpg Jul 10 01:18:38 but thats jsut circuitbent scanners. i wnat to get more control over what Im printing Jul 10 01:19:00 <_av500_> these look like alien PCBs Jul 10 01:19:33 :) Jul 10 01:21:42 so I've been looking for links that talk about printing but the term printing is reserved for serial printing.... I was hoping someone knew a site where physical printing was being addressed Jul 10 01:22:32 * mranostay needs beer Jul 10 01:23:35 afk but still checking in. <3 u Jul 10 01:25:19 * _av500_ needs sleep Jul 10 01:25:29 <_av500_> wanna trade? **** ENDING LOGGING AT Tue Jul 10 02:59:58 2012