[02:12] anyone here have experience with a pandaboard's db9 serial port? [02:29] MrCurious: In what way? I use it for serial console occasionally and it Just Works... [02:35] 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] maybe my serial voltage is wrong (0-5v) [02:54] MrCurious: the db-9 uses rs-232 levels, what does your GPS module use? [02:55] 5v [02:56] are you sure? got a datatsheet on the device? [02:57] thats what the datasheet said IIRC [02:58] 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] i connected the GPS to a FTDI board and read from it on my mac with screen /dev/tty.usbblahblah 9600 [02:59] 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] MrCurious: if it is indeed +5V TTL then it will not work on the RS-232 DB-9 on the panda [03:02] the db9 is expecting 0,12v? [03:03] MrCurious: -12 and +12 [03:03] MrCurious: rs-232 [03:03] i see :( [03:03] guess i will need to switch to an alternative method [03:03] suppose this is a good use for my ttl serial to BT boards [03:04] MrCurious: why not just uses a level shifter and use the uart on the expansion header? [03:04] what voltages is that uart expecting? as this GPS can do either 5v or 3.3v [03:05] and that would be much better than resorting to learning how to use BT on a panda :P [03:05] coincidentally, i have some level shifters in route from sparkfun as we speak [03:05] MrCurious: the all I/O on the panda operates at 1.8V [03:05] ahh, liek a gumstix [03:06] MrCurious: you'll need something like a txs0102 to shift to 3.3v or 5v [03:06] all i/o, *except for usb... [03:06] http://www.sparkfun.com/products/8745 [03:06] or like that... [03:06] cheap, and made very easy to work with [03:07] and since the GPS is send only, only one level converter will be needed :) [03:08] prpplague: thanks for the tip about the expansion header. that will make this much much easier [03:09] 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] i will wire the things i understand [03:11] fabricate PCB's for the things i pretend to know [03:11] and lean on pre-built when its cost effective [03:13] indeed [03:13] MrCurious: http://www.beldynsys.com/quad.htm [03:13] MrCurious: great for prototyping [03:13] 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] worthy investment [03:13] MrCurious: indeed [03:14] MrCurious: true with just about any technology field [03:14] i have some QFN or TQFP accelerometers, gyros and magnetometers i have been meaning to make into a 9dof [03:15] for prototyping, eagle + dorkbotpdx works better for me than prototyping boards [03:18] hehe, each to his own, i only do a board design if i really expect to need more than a handful [03:19] starting to get the feeling that OpenNI is Biased against ARM in favor of intel [03:20] openni? [03:21] http://www.openni.org/ [03:21] http://www.openni.org/gallyt [03:22] the videos betray its purpose faster than the words [03:22] ahh interesting [03:23] i was impressed last night, a pandaboard + usb hard drive + kinect + libfreenect running cvdemo had a usable frame rate [03:23] running ubuntu 11.04 (known to have 1/2 speed usb) [03:28] i see why it doesnt work on ARM, it relies on SSE2 and SSE3 instructions [09:28] 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] hi all [09:34] during booting procees [09:34] i got the problem mounting none on dev [09:35] iam running ubuntu [09:35] and now i changed uImage [09:35] and updated initramfs [09:36] do i need to edit some other files inorder to mount the dev [09:36] 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] ashwinipatankar: do not assume anything speed related in qemu [09:43] 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] no idea [09:43] I do not believe in mips as speed unit [09:44] what is faster? armv5 1.2GHz or armv7 0.6MHz? [09:44] what is faster? armv5 1.2GHz or armv7 0.6GHz? [09:46] 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] hrw, Depends on workload. [09:51] 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. === chrisccoulson_ is now known as chrisccoulson [11:42] hi all [11:43] can anyone tell me is there any spi driver on 11.04 ubuntu on arm ? [16:09] hi all [16:10] any link to build ubuntu filesystfrom scratchem [16:10] scratch [16:38] stm__: See https://wiki.ubuntu.com/ARM/ and read RootFromScratch section. === micahg_ is now known as micahg [16:56] hey people, anyone had any luck with lubuntu or similar on a low-end ARM-based sub-netbook? [16:57] 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] Was considering chromium too, but it seems unstable so far [17:15] gaeel, out of curiousity, what model was that arm-based subnetbook? [17:18] It's a Tec T-Book [17:18] Googling it yields little to no info [17:19] I'm thinking it's a generic machine branded by Tec, for distribution as a cheap machine [17:19] gaeel, then I assume that Linux has no support for its hardware, but I don't know [17:19] It comes pre-installed with Windows CE and a handful of software [17:21] 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] I'm mostly pondering which distro to try [17:24] ubuntu wont support armv5 (which that system likely is) [17:25] use debian [17:25] or some other distro that supports v5 [17:25] What I was thinking [17:26] 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] not for that type of arm anymore [17:27] righto [18:22] FYI, for anyone interested, today is the last day to submit a proposal for ELC-E [19:29] ELC-E? [20:12] GrueMaster: https://blueprints.launchpad.net/linaro-ubuntu/+spec/o-uboot-spl-usb-support-omap4 [20:12] GrueMaster: hopefully when done u-boot spl will have a similar functionality as omap4boot [20:12] but all at the same tree :-) [20:12] and then we can just kill x-loader ;-) [20:13] thanks to jcrigby [20:30] sweet.