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| 11:51.48 | Mephisto___ | Hi! I've purchased a Relio R9 (arm) and it has a LCD controller, and since I have a monitor with SVGA and DVI, I wanted to know if there is anyway I can connect them to get video support? |
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| 12:56.03 | aholler | Mephisto___: no, not without additional hw which might require writing or modifying a driver |
| 12:58.34 | Mephisto___ | aholler, thanks for replying! and what hw would that be? |
| 12:59.31 | aholler | something which talks dvi or svga |
| 13:00.51 | aholler | it might be easier to use some usb-dongle |
| 13:03.00 | aholler | but even then, it won't be fun which such a limited device. |
| 13:04.06 | Mephisto___ | aholler, I didn't get you about the "limited device", did u try it? |
| 13:04.13 | aholler | those at91sam9 aren't fast, they are already slow when using a lcd with 640x480. |
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| 13:06.17 | aholler | Mephisto___: yes, I've wrote some soft (some years ago) which runs on such an at91sam923. |
| 13:06.33 | Mephisto___ | aholler, useful tip thanks! the connector on the monitor side would be either svga or dvi, that's clear, on the Relio side, would it be the P2 connector or another one? |
| 13:07.27 | aholler | Mephisto___: I don't know how you want to connect it. |
| 13:07.48 | aholler | as said, you will need some hw inbetween |
| 13:08.03 | aholler | and soft which drives that hw |
| 13:08.28 | aholler | buy something else if you want svga or dvi output |
| 13:10.31 | Mephisto___ | aholler fair enough! would u please advise me about "something else" with svga or dvi ? |
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| 13:16.04 | aholler | sorry, I can't. I don't know what you want to achieve, nor do I know all the stuff thats out there. You have to read to search datasheets and/ordescriptions for boards yourself. |
| 13:16.30 | aholler | s/read to/read and to/ |
| 13:17.25 | jolkq | Hi, anyone here familiar with usb driver development on the host side? I need isochronous transfers for large amount of data streaming. I've tried libusbk, but it seems to loose alot of packets!! |
| 13:17.35 | Mephisto___ | aholler, thanks you very much for your time and help sir :) |
| 13:17.52 | Mephisto___ | purl, thanks for the transcription :)) |
| 13:17.52 | purl | sure thing, Mephisto___ |
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| 16:53.12 | Qtr | Hi, im a 1st year student in CS, getting into embedded systems. I want to learn linux and im wondering what distro i shoul use to maximize learning of linux and especially linux for embedded systems. WHich distro is the most suitable? |
| 16:54.00 | prpplague | Qtr: if you have never used linux before, using ubuntu is probably a good start |
| 16:54.14 | prpplague | Qtr: that will allow for a quick installation and for you to start playing around |
| 16:54.29 | Qtr | someone in ubuntu said then i learn ubuntu and not linux but if i use arch i learn linux |
| 16:54.49 | prpplague | Qtr: every one is going to have their own opinion and view of that |
| 16:55.09 | prpplague | Qtr: start off with ubuntu, once you get the idea of a few things, you can try a different distro |
| 16:55.11 | Qtr | What Linux/Linuxes is used for realtime embedded? |
| 16:56.06 | Qtr | ty |
| 16:56.06 | prpplague | Qtr: there isn't a specific one, there are some realtime patchsets |
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| 17:16.22 | aholler | you could use some livecd to make the first steps, there is e.g. knoppix and almost every distribution offers a livecd too |
| 17:16.50 | aholler | so you don't have to install anything at all. |
| 17:20.01 | calculus | or use VMs (e.g. Virtualbox) and try a different distro in each |
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| 17:59.44 | Qtr | Whats a good first project for using linux to solve an embedded problem? |
| 18:00.01 | Qtr | Aloso, is there some good starter kit like Arduino but with linux? |
| 18:11.24 | calculus | there are various development boards available that can run linux, beagleboard, beagle bone, pandaboard, raspberry pi, sheevaplug (and related plugs), ... |
| 18:12.03 | calculus | the list is ever expanding, all at different price points with different features, processors, and levels of support from different distros |
| 18:19.37 | landley | Qtr: start booting an embedded system under qemu. |
| 18:19.42 | landley | Then try to duplicate that on real hardware. |
| 18:19.51 | landley | I did http://landley.net/aboriginal for that purpose, but I'm biased. |
| 18:20.25 | landley | Step 1 is pretty much "get a shell prompt on a serial console". This turns out to be kinda hard, there's a dozen things to get right. |
| 18:20.52 | landley | Half of which are solved for you by an emulator, and then moving to real hardware you have a known working environment to compare against. |
| 18:21.41 | landley | (Picking a board where you can boot from removable media instead of requiring a jtag is the easy way.) |
| 18:21.46 | landley | sd card, these days. |
| 18:22.17 | landley | Qtr: raspberry pi is the cheapest option. That's actually reassuring in a "don't let out the magic smoke" way. |
| 18:22.26 | landley | You can break a couple and not get too worked up about it. |
| 18:22.51 | Qtr | thanks for the tips |
| 18:23.11 | landley | (Although booting from removable media also makes it harder to brick the sucker. It no longer boots means take the sd card to a machine that still _does_ boot and rewrite it from there.) |
| 18:23.23 | mnemoc | Qtr: search for the "olinuxino" too |
| 18:23.43 | landley | mnemoc: never heard of that one, linux on arduino? |
| 18:23.46 | landley | Doesn't seem likely... |
| 18:23.58 | calculus | landley: a gentoo dev said that the best way to get the kernel perl removal stuff integrated is to get it accepted upstream (but you are probably doing that already) |
| 18:24.10 | mnemoc | landley: imx53 based arduino-alike board |
| 18:24.31 | mnemoc | err, imx233 |
| 18:24.32 | landley | calculus: I need to resubmit it. Possibly this evening. |
| 18:25.01 | landley | I was trying to get an aboriginal linux release out yesterday, but they broke arm versatile scsi AGAIN in 3.5, and bisecting is time consuming... |
| 18:25.08 | mnemoc | landley: the next generation is cortex-a8/512 (allwinner A13) |
| 18:25.41 | calculus | landley: yep, I just bisected a mips error and sent it to the linux-mips mailing list |
| 18:26.03 | landley | "embedded" is a fairly vague term. It generally means "does not have keyboard, mouse, and screen in normal operation", which is a huge variety of stuff. |
| 18:26.33 | landley | calculus: could you send me a pointer to that? I'm probably going to have to slap patches on it to get any of this out in reasonable time. |
| 18:27.00 | landley | I'd really really like an aboriginal release in the next couple days because it's been waaaaay too long and I need a resync point before I can hose it down with musl and toybox and other destabilizing stuff. |
| 18:27.40 | landley | My point about "embedded being vague" is attention tends to get attracted to subsets of the embedded space and people define "embedded" as just that for a while. |
| 18:27.56 | landley | Currently the rise of smartphones and their disruptive attack on the desktop space is attracting buckets of attention. |
| 18:28.30 | calculus | landley: https://bugs.gentoo.org/show_bug.cgi?id=427536, is the gentoo bug, I sent something similar to the mips mailing list, but it is my first post and I don't see it on the web archive |
| 18:28.32 | landley | But "this device needs to run for 6 months off of two double-A batteries", or "this device needs to cost less than a dollar" is embedded too. And Linux _can_ work there, it's just hard. |
| 18:30.37 | landley | calculus: not really in my uses cases, but yeah it should be dealt with. |
| 18:42.47 | Qtr | thanks a lot |
| 18:42.57 | Qtr | i will look at rapsberry and beagleboard |
| 18:46.11 | roxfan | landley: one guy did manage to "run" linux on an arduino |
| 18:46.37 | roxfan | well, on an avr anyway |
| 18:47.07 | landley | http://dmitry.co/index.php?p=./04.Thoughts/07.%20Linux%20on%208bit |
| 18:47.10 | landley | I'm aware of that. |
| 18:47.11 | roxfan | yep |
| 18:48.55 | landley | My todo item from that was get his arm emulator source and see what it would take to modify fabrice's javascript x86 emulator to do arm instead. |
| 18:49.04 | landley | But that's in the "giant pile of stuff I'll probably never do". |
| 18:49.24 | landley | I should put up a "here, have an idea" page. Stuff I won't get around to. |
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| 18:58.03 | calculus | a landley SOC (summer of code) |
| 19:04.04 | roxfan | except he won't pay |
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| 19:28.04 | Qtr | is arduino good? good for starting i guess but with a raspberry i could do everythin i can on arduino right? plus i get linux instead |
| 19:28.23 | prpplague | Qtr: pretty much |
| 19:28.31 | prpplague | Qtr: i'd recommend beaglebone instead though |
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| 19:35.36 | Qtr | so with raspberry i dont need a jtag? because i dont have a jtag on my laptop |
| 19:35.40 | Qtr | same for beagle? |
| 19:39.52 | mnemoc | jtag is usually only needed if you need to debug bootloader or kernel bugs, you don't *need* jtag for any decently supported platform unless you are doing bootloader hacking |
| 19:55.11 | Qtr | i might wanna do booloader hacking. how would that work with raspberry? |
| 20:06.35 | roxfan | probably not very well |
| 20:06.45 | roxfan | i hear the cpu docs are pretty hard to get |
| 20:18.14 | calculus | that and the gpu is used to load the bootloader (at least I remember reading something like that earlier) |
| 20:19.19 | calculus | the other thing to consider when purchasing a board is the community that surrounds it, beagleboard and beaglebone have been around longer and have a good community |
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