| 00:09.16 | ds2 | buttons work so much better with GPIO_KEYS=Y ;) |
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| 00:33.37 | chiques-2 | Anyone know how to get a basic stamp to work in ubuntu? |
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| 01:20.55 | t_j | hi I am trying to workout what bar0 and bar1 are set to in linux, whats the easyest way to find out? |
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| 01:46.30 | monkey_ | arm chat? |
| 01:46.58 | bsdfox | got a question? this is the best place to ask |
| 01:47.04 | t_j | monkey_: silence for the last 20 mins |
| 01:47.49 | t_j | monkey_: what arm are you working on? |
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| 01:56.27 | monkey_ | probably an 7? |
| 01:56.50 | monkey_ | is anybody familiar with yagarto? |
| 01:58.49 | t_j | nope, trying to get a xscale 80219 pci bus correct configured atm |
| 02:03.40 | monkey_ | t_j: this is the kit i'm getting http://www.olimex.com/dev/lpc-2378stk.html |
| 02:04.03 | monkey_ | arm7tdmi-s |
| 02:07.43 | Mirell | Huzzah, presentation all uploadified... |
| 02:07.45 | t_j | nice little board what you gonna do with it? |
| 02:13.54 | monkey_ | it's for school |
| 02:14.10 | monkey_ | i'm doing a certificate program in embedded programming @ a uni here |
| 02:15.26 | monkey_ | but , as usual, linux isn't supported, not that I care. but they are using yagarto on windows(yet another gnu arm tool chain), so I assume i can just do it differently in linux |
| 02:16.37 | monkey_ | the program seems pretty good, they are going to cover writing interrupt handlers, schedulers, drivers, boot loaders..... and I think threads too? |
| 02:17.23 | t_j | sounds like a cool course |
| 02:17.50 | t_j | i am learning the hard way by hacking till it works |
| 02:18.47 | bsdfox | monkey_: gcc will compile for an arm7 target |
| 02:19.40 | monkey_ | I finished their c++ certificate course in june. was better than I thought. |
| 02:19.53 | wmat | monkey_: codesourcery's gcc is probably your best bet |
| 02:19.55 | monkey_ | does arm7 support threads? |
| 02:19.59 | t_j | bsdfox: have you done any embedded bsd work by any chance? |
| 02:20.11 | bsdfox | t_j: nope |
| 02:20.46 | t_j | just with a nick like that thought you might have |
| 02:20.57 | bsdfox | monkey_: afaik threads on the single core processors (some multiple-core arms are in the works) they've all got a hypervisor that handles threading in software |
| 02:21.50 | monkey_ | what about using a debugger? |
| 02:22.25 | bsdfox | there are tools for jtag |
| 02:23.12 | monkey_ | ok, we also bought a usb/jtag debugger |
| 02:27.07 | wmat | monkey_: try codesourcery's sourcery G++ which embeds the GNU toolchain into eclipse. Assuming they support the LPC2378 board config (which you could write yourself if they don't) it interfaces nicely with GDB and usb jtag debuggers |
| 02:28.01 | monkey_ | it's g++? |
| 02:28.48 | wmat | for c++, yes. But that's mostly just the name. |
| 02:29.25 | wmat | it's the normal gnu toolchain |
| 02:29.41 | wmat | but it's got improvements that haven't made it upstream yet |
| 02:30.49 | monkey_ | ok |
| 02:30.54 | monkey_ | i will check it out |
| 02:32.29 | monkey_ | thanks guys |
| 02:33.16 | Mirell | Hmm... |
| 02:33.32 | monkey_ | hmmm... |
| 02:35.27 | monkey_ | oh, got another question, in this class, we'll be learning assembly. and, they said, use assembly for compiler defeciencies(sp) , but what would require assembly? |
| 02:36.28 | Mirell | Compiler deficiencies... |
| 02:36.33 | Mirell | Is this professor like 80? |
| 02:36.48 | monkey_ | lol. i'm not sure if that was the right thing to say, or if I read that right |
| 02:37.44 | Mirell | There are obviously some things you do in assembly to get the absolute best performance known to man and God, but I haven't seen anything which really does much assembly even on embedded anymore. |
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| 02:38.02 | monkey_ | can there be big differences in speed? |
| 02:38.49 | t_j | the only stuff i have seen assembly on recentlyt was for implimenting atomic ops |
| 02:38.53 | Mirell | If you know what you're doing, yes. |
| 02:39.47 | Mirell | But in most software shops, the sheer amount of development time to do assembly versus C is vast enough that it's rare. Typically you only see it in a call-out for some function or whatnot that is used 100,000,000 times, and you know enough assembly to do a measurable increase in performance. |
| 02:39.57 | Mirell | Never have I seen an entire project done entirely in assembly. |
| 02:41.02 | Mirell | Still a good thing to learn, just to know what the machine is doing. But in real life, you'll probably never really use it much. |
| 02:41.58 | monkey_ | ok, thanks guys |
| 02:42.07 | monkey_ | time for cleaning |
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| 06:03.46 | Mirell | Hmm... |
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| 13:31.39 | chouimat | morning |
| 13:34.02 | florian | hi chouimat |
| 13:34.29 | chouimat | florian: hi |
| 13:39.48 | chouimat | prpplague: good morning |
| 13:39.56 | prpplague | greetings earthlings |
| 13:40.32 | prpplague | has to drive across town this morning thru rush hour traffice :( |
| 13:40.49 | prpplague | the new SLA prototypes of the DogHouse should be here this morning |
| 13:45.32 | florian | hi prpplague |
| 13:46.23 | prpplague | florian: greetings |
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| 17:34.55 | calculus | Mirell: here is a project done in assembly, http://www.menuetos.net/ |
| 17:38.54 | mnemoc | ponders if that is insane, awesome or both |
| 17:41.55 | roxfan | it's silly |
| 17:42.21 | roxfan | "The design goal has been to remove the extra layers between different parts of an OS, which normally complicate programming and create bugs." yeah right |
| 17:46.49 | mnemoc | :D |
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| 18:19.16 | prpplague | GPSFan: ping |
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| 19:09.57 | chouimat | bangs his head on desk |
| 20:01.31 | Mirell | calculus: That's...insane. |
| 20:02.09 | chouimat | Mirell: it's a nice toy os |
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| 22:30.36 | GPSFan | prpplague: pong.. |
| 22:30.50 | prpplague | GPSFan: nm, too late now :) |
| 22:31.12 | GPSFan | prpplague: sorry, was out all day.. |
| 22:39.29 | prpplague | GPSFan: no problem, the info became a moot point |
| 22:51.13 | Mirell | Man, pexpect is really cool |
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