[02:12] <MrCurious> anyone here have experience with a pandaboard's db9 serial port?
[02:29] <infinity> MrCurious: In what way?  I use it for serial console occasionally and it Just Works...
[02:35] <MrCurious> i have a GPS module that puts out a 9600 data stream. i can see a data stream, but it looks like its off somehow.  i use screen /dev/ttyO2 9600 which is near identical to how i do it on another machine
[02:39] <MrCurious> maybe my serial voltage is wrong (0-5v)
[02:54] <prpplague^2> MrCurious: the db-9 uses rs-232 levels, what does your GPS module use?
[02:55] <MrCurious> 5v
[02:56] <prpplague^2> are you sure? got a datatsheet on the device?
[02:57] <MrCurious> thats what the datasheet said IIRC
[02:58] <MrCurious> but the garbled data has the same general pattern as the data i am expecting, but as if its 6 or 7 bits instead of 8
[02:59] <MrCurious> i connected the GPS to a FTDI board and read from it on my mac with screen /dev/tty.usbblahblah 9600
[02:59] <MrCurious> i suspect my next step will be to write a C program to read from teh serial port where i can control all the speed parity stop bit settings
[03:01] <prpplague^2> MrCurious: if it is indeed +5V TTL then it will not work on the RS-232 DB-9 on the panda
[03:02] <MrCurious> the db9 is expecting 0,12v?
[03:03] <prpplague^2> MrCurious: -12 and +12
[03:03] <prpplague^2> MrCurious: rs-232
[03:03] <MrCurious> i see :(
[03:03] <MrCurious> guess i will need to switch to an alternative method
[03:03] <MrCurious> suppose this is a good use for my ttl serial to BT boards
[03:04] <prpplague^2> MrCurious: why not just uses a level shifter and use the uart on the expansion header?
[03:04] <MrCurious> what voltages is that uart expecting? as this GPS can do either 5v or 3.3v
[03:05] <MrCurious> and that would be much better than resorting to learning how to use BT on a panda :P
[03:05] <MrCurious> coincidentally, i have some level shifters in route from sparkfun as we speak
[03:05] <prpplague^2> MrCurious: the all I/O on the panda operates at 1.8V
[03:05] <MrCurious> ahh, liek a gumstix
[03:06] <prpplague^2> MrCurious: you'll need something like a txs0102 to shift to 3.3v or 5v
[03:06] <MrCurious> all i/o, *except for usb...
[03:06] <MrCurious> http://www.sparkfun.com/products/8745
[03:06] <MrCurious> or like that...
[03:06] <MrCurious> cheap, and made very easy to work with
[03:07] <MrCurious> and since the GPS is send only, only one level converter will be needed :)
[03:08] <MrCurious> prpplague: thanks for the tip about the expansion header. that will make this much much easier
[03:09] <prpplague^2> prpplague^2: yea if arent into doing the wiring yourself
[03:10]  * prpplague^2 has a spool of about 10k txs0102's in the garage
[03:11] <MrCurious> i will wire the things i understand
[03:11] <MrCurious> fabricate PCB's for the things i pretend to know
[03:11] <MrCurious> and lean on pre-built when its cost effective
[03:13] <prpplague^2> indeed
[03:13] <prpplague^2> MrCurious: http://www.beldynsys.com/quad.htm
[03:13] <prpplague^2> MrCurious: great for prototyping
[03:13] <MrCurious> i just want to make an interesting robot. i have discovered while on this journey, starting in the land of ATMEL that there are many rabbit holes one can fall down into
[03:13] <prpplague^2> worthy investment
[03:13] <prpplague^2> MrCurious: indeed
[03:14] <prpplague^2> MrCurious: true with just about any technology field
[03:14] <MrCurious> i have some QFN or TQFP accelerometers, gyros and magnetometers i have been meaning to make into a 9dof
[03:15] <MrCurious> for prototyping, eagle + dorkbotpdx works better for me than prototyping boards
[03:18] <prpplague^2> hehe, each to his own, i only do a board design if i really expect to need more than a handful
[03:19] <MrCurious> starting to get the feeling that OpenNI is Biased against ARM in favor of intel
[03:20] <prpplague^2> openni?
[03:21] <MrCurious> http://www.openni.org/
[03:21] <MrCurious> http://www.openni.org/gallyt
[03:22] <MrCurious> the videos betray its purpose faster than the words
[03:22] <prpplague^2> ahh interesting
[03:23] <MrCurious> i was impressed last night, a pandaboard + usb hard drive + kinect + libfreenect running cvdemo had a usable frame rate
[03:23] <MrCurious> running ubuntu 11.04 (known to have 1/2 speed usb)
[03:28] <MrCurious> i see why it doesnt work on ARM, it relies on SSE2 and SSE3 instructions
[09:28] <ashwinipatankar> I am running a code on arm kernel in qemu, can any one advice me how to calculate the mips for the same, I am having gprof output
[09:34] <stm__> hi all
[09:34] <stm__> during booting procees
[09:34] <stm__> i got the problem mounting none on dev
[09:35] <stm__> iam running ubuntu
[09:35] <stm__> and now i changed uImage
[09:35] <stm__> and updated initramfs
[09:36] <stm__> do i need to edit some other files inorder to mount the dev
[09:36] <ashwinipatankar> I am running a code on arm kernel in qemu, can any one advice me how to calculate the mips for the same, I am having gprof output
[09:41] <hrw> ashwinipatankar: do not assume anything speed related in qemu
[09:43] <ashwinipatankar> hrw: I agree , but how to calculate mips, my code is running, I am having gprof output for the same, even on desktop also (outside qemu) how will I calculate mips
[09:43] <hrw> no idea
[09:43] <hrw> I do not believe in mips as speed unit
[09:44] <hrw> what is faster? armv5 1.2GHz or armv7 0.6MHz?
[09:44] <hrw> what is faster? armv5 1.2GHz or armv7 0.6GHz?
[09:46] <ashwinipatankar> hrw: MIPS with respect to specific code, so that we can know how many instructions it needs to execute in per second for real time operations
[09:50] <persia> hrw, Depends on workload.
[09:51] <persia> ashwinipatankar, Map out your codepaths, then see how long it takes to execute your code.  Mind you, this won't be very interesting, especially for qemu.
[11:42] <blu_> hi all
[11:43] <blu_> can anyone tell me is there any spi driver on 11.04 ubuntu on arm ?
[16:09] <stm__> hi all
[16:10] <stm__> any link to build ubuntu filesystfrom scratchem
[16:10] <stm__> scratch
[16:38] <GrueMaster> stm__: See https://wiki.ubuntu.com/ARM/ and read RootFromScratch section.
[16:56] <gaeel> hey people, anyone had any luck with lubuntu or similar on a low-end ARM-based sub-netbook?
[16:57] <gaeel> My grandmother got one for free, and I'm thinking of installing something that will work for her email and web-browsing needs
[16:58] <gaeel> Was considering chromium too, but it seems unstable so far
[17:15] <diwic> gaeel, out of curiousity, what model was that arm-based subnetbook?
[17:18] <gaeel> It's a Tec T-Book
[17:18] <gaeel> Googling it yields little to no info
[17:19] <gaeel> I'm thinking it's a generic machine branded by Tec, for distribution as a cheap machine
[17:19] <diwic> gaeel, then I assume that Linux has no support for its hardware, but I don't know
[17:19] <gaeel> It comes pre-installed with Windows CE and a handful of software
[17:21] <gaeel> I want to give it a go for the kicks, it comes with a reset SD card, so I can always nuke it and put it back if I brick it
[17:21] <gaeel> I'm mostly pondering which distro to try
[17:24] <ogra_> ubuntu wont support armv5 (which that system likely is)
[17:25] <ogra_> use debian
[17:25] <ogra_> or some other distro that supports v5
[17:25] <gaeel> What I was thinking
[17:26] <gaeel> I don't need anything to state-of-the-art, since it's for my grandmother, but  was wondering if Ubuntu had anything to offer
[17:26] <ogra_> not for that type of arm anymore
[17:27] <gaeel> righto
[18:22] <prpplague> FYI, for anyone interested, today is the last day to submit a proposal for ELC-E
[19:29] <GrueMaster> ELC-E?
[20:12] <rsalveti> GrueMaster: https://blueprints.launchpad.net/linaro-ubuntu/+spec/o-uboot-spl-usb-support-omap4
[20:12] <rsalveti> GrueMaster: hopefully when done u-boot spl will have a similar functionality as omap4boot
[20:12] <rsalveti> but all at the same tree :-)
[20:12] <rsalveti> and then we can just kill x-loader ;-)
[20:13] <rsalveti> thanks to jcrigby
[20:30] <GrueMaster> sweet.