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| 02:17.48 | somerndusr | hello. i'm compiling busybox for the first time. the first time i compiled from source i got a staticly linked executable that was about 780kB. the next one i compiled and thought i would end up with a smaller executable but it ended up being 4.2 megabytes. |
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| 02:18.23 | somerndusr | i'm not sure what i did differently, but if anyone has any suggestions on what i can do to get a smaller binary i'd appreciate it |
| 02:18.26 | somerndusr | thx in advance |
| 02:18.45 | somerndusr | btw, is there an official channel for busybox somewhere? |
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| 05:42.25 | _ABC | Hello |
| 06:03.50 | davidc__ | prpplague: still looking for LVDS switches? |
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| 06:25.17 | user904 | hi |
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| 14:21.27 | prpplague | davidc__: yep still looking |
| 14:23.43 | prpplague | ho ho ho |
| 14:23.47 | prpplague | merry freakin friday |
| 14:27.38 | *** mode/#edev [+o prpplague] by ChanServ |
| 14:35.34 | florian | hi prpplague |
| 14:35.48 | prpplague | florian: greetings earthling |
| 14:36.47 | prpplague | florian: whats cookin today? |
| 14:37.09 | florian | prpplague: maany bits! :-) |
| 14:38.21 | florian | I scheduled some tasks for the build server... its going to get warm downstairs :-) |
| 14:38.28 | prpplague | hehe |
| 14:38.45 | prpplague | tries to get motivated for todays work |
| 14:44.40 | prpplague | davidc__: give me a shout when you are back around |
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| 15:39.34 | *** topic/#edev is A channel for the discussion of embedded systems (Hardware/Software/Linux/WinCE/Commercial Device Repurposing) : Firmware Linux Discussion : Busybox and Buildroot Discussion : Gold 1151.20 : Silver 18.50 |
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| 16:00.44 | Mirell | Mmm... |
| 16:27.57 | _ABC | an external SRAM is required for running linux on an ARM9 right? but a RTOS is fine without SRAM? |
| 16:29.51 | SpeedEvil | In general, linux needs quite a bit of memory |
| 16:29.59 | SpeedEvil | a couple of meg is the bare minimum. |
| 16:30.19 | _ABC | i see |
| 16:30.21 | SpeedEvil | Maybe 500K? If you did XIP - but that would be with the 2.0? kernel |
| 16:30.28 | SpeedEvil | 2.6 is going to be a bit larger. |
| 16:30.56 | SpeedEvil | RTOS - for some definitions - might not even need any RAM at all other than the internal memory |
| 16:31.11 | _ABC | 64K? |
| 16:31.25 | SpeedEvil | You can do it in much less. |
| 16:31.36 | _ABC | thats great! |
| 16:31.50 | SpeedEvil | The Apollo computer was a RTOS - and it ran in a few hundred bytes RAM IIRC |
| 16:32.26 | _ABC | oh nice |
| 16:33.52 | _ABC | by the way, are there easy ways to boot an arm9? |
| 16:34.35 | _ABC | programming a nand flash sounds not that easy |
| 16:35.00 | SpeedEvil | Dunno - I've not really looked. |
| 16:35.03 | SpeedEvil | Well - buy a n900 |
| 16:35.09 | SpeedEvil | But that's prolly not what you meant. |
| 16:35.17 | _ABC | oh |
| 16:35.27 | SpeedEvil | Can the one in question boot from SD? |
| 16:35.42 | _ABC | well not devices from nxp |
| 16:35.51 | SpeedEvil | Generally, read the datasheet, and find the easiest boot media |
| 16:35.53 | _ABC | but from atmel yes iirc |
| 16:36.03 | SpeedEvil | I've been looking at those too |
| 16:36.25 | SpeedEvil | http://www.standardics.nxp.com/support/documents/microcontrollers/all/?scope=LPC3250&type=user |
| 16:36.53 | _ABC | i've been looking at the LPC 32xx series too! |
| 16:38.55 | _ABC | i wonder if the uart boot is easy |
| 16:40.45 | _ABC | SpeedEvil: did you say you've been looking at the arm9 devices from atmel? |
| 16:40.58 | SpeedEvil | yes. |
| 16:41.00 | SpeedEvil | er |
| 16:41.01 | SpeedEvil | no |
| 16:41.10 | _ABC | oh okay |
| 16:41.53 | _ABC | just wondering if their SD boot method is as easy as dragging the file onto the card and then inserting the card the uP |
| 16:42.09 | SpeedEvil | No. |
| 16:42.34 | SpeedEvil | You'll generally need to format it as if it was a hard disk - partition table , boot sector, and stuff. |
| 16:42.51 | SpeedEvil | Actually - it may simply exectute the first sector |
| 16:43.01 | _ABC | and also containing a FS? |
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| 16:47.18 | SpeedEvil | Generally it won't care |
| 16:47.24 | SpeedEvil | It will execute the first sector(s) |
| 16:47.30 | SpeedEvil | and you take it from there. |
| 16:47.34 | _ABC | i see |
| 16:48.08 | _ABC | so it seems fairly easy..easier than booting from uart or nand flash |
| 16:57.30 | SpeedEvil | NAND flash is more or less similar - you boot from the first block - which is guaranteed defect free. |
| 16:57.46 | SpeedEvil | Then your bootloader has to cope with errors in the flash as described in the datasheet of the flash. |
| 17:00.37 | _ABC | well is programming nand flash as simple as using a uC to configure it? probably not? |
| 17:01.19 | SpeedEvil | Maybe, yes. Some have nice programmers. Also you may be able to use a smartmedia writer in some cases |
| 17:01.50 | _ABC | ok, not that bad then :) |
| 18:06.38 | davidc__ | prpplague: around - I ran across some maxim parts that were high speed LVDS muxes |
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| 18:30.32 | prpplague | davidc__: ahh, i'm scared of using maxim parts in production |
| 18:30.45 | prpplague | davidc__: i've had problems with delivery times on them |
| 18:30.45 | davidc__ | yeah, me too |
| 18:30.54 | davidc__ | just buy enough before beginning for the lifetime of the product |
| 18:31.03 | prpplague | hehe |
| 18:31.14 | prpplague | davidc__: i'm going with a relay for this cut of the board |
| 18:31.29 | prpplague | davidc__: after i know that the rest of the hardware works, i'll probably rev the board |
| 18:36.45 | prpplague | davidc__: you still around? |
| 18:36.50 | davidc__ | yup |
| 18:37.12 | prpplague | davidc__: got a second to bounce a situation off of you? |
| 18:37.17 | davidc__ | sure |
| 18:37.31 | prpplague | davidc__: got an atmega328 on an arm board |
| 18:37.51 | prpplague | davidc__: now normally the atmega328 will communcate to the arm via SPI interface |
| 18:37.54 | davidc__ | ok |
| 18:38.10 | prpplague | davidc__: the uart on the atmega328 will techincally be unused for the design |
| 18:38.20 | prpplague | davidc__: but i've been using the uart for debugging purposes |
| 18:38.52 | prpplague | davidc__: the board is pretty complete and i have no major need of the uart any more, so i was considering either doing one of two things |
| 18:39.17 | prpplague | davidc__: leaving a three pin header(GND, RX, TX) on the board in case i needed it |
| 18:39.18 | prpplague | davidc__: or |
| 18:39.39 | prpplague | davidc__: connecting the uart from the atmega328 to an unused uart on the arm |
| 18:40.00 | prpplague | davidc__: pros/cons ? |
| 18:40.36 | davidc__ | eh; I always leave a debug interface |
| 18:40.39 | davidc__ | which debugger are you using? |
| 18:40.44 | SpeedEvil | you could do both |
| 18:41.07 | prpplague | davidc__: not really using a debugger perse, just got some printfs with some status info |
| 18:41.09 | SpeedEvil | header - present or not on the board - with wire links to the arm that could be easily scratched off |
| 18:41.29 | prpplague | SpeedEvil: yea i was considering that |
| 18:42.55 | SpeedEvil | I'm sure I've seen a probe consisting of several bed-of-nails pins - that locates into two holes on a PCB to contact pads. What's this called? |
| 18:43.10 | prpplague | SpeedEvil: just thinking that i could eliminate a number of headers and things if i went directly between the two uarts |
| 18:44.11 | prpplague | SpeedEvil: yea, this is a really a minor thing, i just like to add "what ifs" to my design if i can |
| 18:44.14 | SpeedEvil | Board space problems? |
| 18:44.42 | prpplague | SpeedEvil: nothing major, more worried about EMI with alot of headers |
| 18:45.16 | SpeedEvil | I was more meaning you leave off the header until you need it |
| 18:45.30 | SpeedEvil | But yes |
| 18:48.45 | prpplague | considers what to do |
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| 19:18.14 | Mirell | whacks prpplague |
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| 19:53.31 | prpplague | Mirell: yes? |
| 19:54.12 | Mirell | prpplague: I just felt like hitting you. |
| 19:54.34 | prpplague | ahh i get that alot |
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| 20:22.49 | Mirell | Fair enough. |
| 20:31.09 | Mirell | I'm tempted to switch to leasing cars. |
| 20:42.35 | prpplague | Mirell: think that would save you money? |
| 20:44.21 | Mirell | prpplague: I'd rather have a low ($200-300 per month) constant payment forever and get a new car every three years. |
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| 21:08.38 | prpplague | Mirell: i'm not a big car person, so i usually keep mine for awhile after paying it off |
| 21:08.43 | prpplague | Mirell: but i do understand |
| 21:09.06 | prpplague | Mirell: i don't like owning a house. much prefer to rent an apartment, which is basically the same as leasing a car |
| 21:14.58 | Mirell | prpplague: Yah. More flexibility. |
| 21:15.13 | prpplague | hates owning a house |
| 21:15.16 | Mirell | prpplague: Especially since I want to move way closer to my new job, and it's easy to do when lease is up at my current apartment |
| 21:15.27 | prpplague | exactly |
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| 21:39.06 | davidc__ | Man... new car every three years? |
| 21:39.16 | davidc__ | Me and my 20 year old van feel outdated |
| 21:40.22 | SpeedEvil | also - can you really get a new car every 3 years for $10K/3 years? |
| 21:42.51 | davidc__ | [I have a 20 year old toyota previa, and I wouldn't trade it for a new car given the opportunity. 4WD + stick shift are hard to find in a van-type vehicle these days] |
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| 21:47.15 | chouimat | prpplague:http://img151.imageshack.us/img151/9426/savemeld5.jpg |
| 21:47.36 | prpplague | http://img151.imageshack.us/img151/9426/savemeld5.jpg |
| 21:47.53 | prpplague | chouimat: hehe |
| 21:48.09 | prpplague | chouimat: heard that one back in 1983 |
| 21:48.17 | chouimat | :) |
| 21:51.30 | prpplague | thinks he might go home early today |
| 21:54.19 | davidc__ | don't you work from home? :P |
| 22:12.40 | prpplague | davidc__: no i rent an office |
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