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| 15:05.24 | chouimat | morning |
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| 16:40.02 | kRutOn | Hm, setting elf2flt on my buildroot doesn't seem to make things BFLT |
| 16:51.54 | *** join/#edev T0mW (n=Tom@24.238.68.20.res-cmts.sth.ptd.net) |
| 16:52.03 | T0mW | Good morning |
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| 20:19.12 | LyosNorezel2 | is there a standard speed for serial ports on routers? |
| 20:19.39 | CosmicPenguin | Its silly for modern systems to not use at least 115200 |
| 20:19.52 | LyosNorezel2 | hmmm |
| 20:22.05 | LyosNorezel2 | what's the MAX3243C capable of? |
| 20:31.07 | *** join/#edev xSmurf (n=xSmurf@unaffilated/mrsmurf) |
| 20:31.12 | xSmurf | hi2al |
| 20:31.13 | xSmurf | l |
| 20:31.45 | xSmurf | I'm sorry if the followin is a paste... but it was suggested to me in #electronics of asking the question here... |
| 20:31.59 | xSmurf | "anyone has a guide on reading small xtals values? I salvaged this one which says 326ER0, which I'm pretty sure is a 32Khz xtal for real time clocks, but having no scope I have no way of knowing if I'm right... |
| 20:32.10 | xSmurf | time clocks, but having no scope I have no way of knowing if I'm right |
| 20:32.10 | xSmurf | 15:25 xSmurf> more specifically, I'm trying to build http://www.pira.cz/rds/brtcsch.gif which clkout connected to the external interrupt of my uC (Mega8 on an arduino board)... |
| 20:32.19 | xSmurf | I have a 1.5K ohms pull up resistor in between as, as per the datasheet, clkout is open drain... |
| 20:32.26 | xSmurf | I know the I2C bus and library work (the bus also has it's own pull ups) as I've used it with PCF8574 I2C bidi shift register... |
| 20:32.35 | xSmurf | from what I understan of the datasheet and app note, I'm setting clkout to oscillate at 1Hz, which should be easy enough to detect with a meter... |
| 20:32.52 | xSmurf | and it doesn't seem to work so either I didn't understand how the settings register work on the IC, something is wrong with the crystal (should it use two caps?) or a bit of both ;p" |
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| 20:34.50 | xSmurf | hi myren |
| 20:34.51 | myren | howdy |
| 20:34.51 | myren | i like the focus of this channel. :) |
| 20:34.52 | xSmurf | hehe indeed! |
| 20:35.06 | wmat | there's also #elinux for more specific embedded linux discussions ;) |
| 20:35.11 | CosmicPenguin | prpplague: ping |
| 20:35.15 | CosmicPenguin | prpplague: you're needed in #olpc |
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| 20:37.41 | wmat | oh and #dlinkhacking for specific dlink hardware discussions |
| 20:38.36 | xSmurf | any channel for avr stuff? how about I2C? |
| 20:38.41 | xSmurf | channels even |
| 20:39.00 | CosmicPenguin | Linux software discussion for i2c happens in #linux-sensors |
| 20:40.20 | xSmurf | that's a start :) thx |
| 20:40.43 | xSmurf | although my problem is neither specific to linux nor is it about sensors :P |
| 20:41.00 | myren | yo quiero OMAP3 |
| 20:41.12 | CosmicPenguin | linux-sensors also involves the I2C hardware drivers |
| 20:41.21 | CosmicPenguin | its hard to have sensors without I2C |
| 20:41.26 | xSmurf | interesting |
| 20:42.49 | xSmurf | the only circuit I saw using this chip is a dev board which has code for it in it's API |
| 21:19.15 | prpplague | CosmicPenguin: ping |
| 21:19.25 | CosmicPenguin | yo |
| 21:19.36 | prpplague | CosmicPenguin: need your $0.02 |
| 21:19.53 | CosmicPenguin | All i have is a dollar |
| 21:20.00 | xSmurf | lol |
| 21:20.11 | prpplague | CosmicPenguin: as a person who doesn't work with ARM much, how do you feel about intel/marvell's xscale line ? |
| 21:33.47 | CosmicPenguin | prpplague: it works |
| 21:33.51 | CosmicPenguin | thats it |
| 21:34.20 | CosmicPenguin | its not sexy, its not technologically compelling, its not anything but just a functional embedded chip that would get my project where it belongs |
| 21:35.49 | prpplague | CosmicPenguin: no feelings about intel's history of short product life and tons of errata for their strongarm and xscale stuff? |
| 21:38.40 | CosmicPenguin | eratta happens |
| 21:39.35 | prpplague | CosmicPenguin: hehe, but 50 pages? |
| 21:40.27 | prpplague | CosmicPenguin: ok, one last question...... any thoughts/feels regarding samsung vs. intel when it comes to ARM? |
| 21:41.56 | CosmicPenguin | run |
| 21:42.04 | prpplague | hehe |
| 21:43.18 | prpplague | CosmicPenguin: was just curious because i hear so many PHB's that are all gungho on xscale |
| 21:43.46 | myren | the latest phillip's NXP's look really impressive |
| 21:43.59 | myren | the arm9 with vector fp |
| 21:44.04 | myren | the lpc2000 series |
| 21:44.14 | prpplague | neat |
| 21:44.44 | myren | when i was scoping uc's a couple months ago they were the ones that really caught my eye. i didnt see anything particularly compelling from samsung. |
| 21:45.47 | prpplague | myren: oh? you looked at the s3c24xx series? |
| 21:49.39 | myren | i cant find anything but samsung asic right now |
| 21:49.49 | myren | do they have manufactured chips somewhere? |
| 21:51.05 | prpplague | myren: both arm7 and arm9 - http://www.samsung.com/Products/Semiconductor/MobileSoC/index.htm |
| 21:51.37 | prpplague | myren: our latest designs are based on the s3c2410 - http://www.samsung.com/products/semiconductor/MobileSoC/ApplicationProcessor/ARM9Series/S3C2410/S3C2410.htm |
| 21:53.58 | myren | hmmm dsp |
| 21:54.11 | prpplague | myren: ?/ |
| 21:56.06 | myren | just oggling the spec list |
| 21:57.47 | prpplague | myren: hmm, i don't think any of the s3c24xx have dsp |
| 21:58.25 | myren | the MobileSoC index lists a chip with their Teak DSP, the 2460 |
| 22:00.07 | myren | a bunch of multimedia acceleration gear too |
| 22:02.16 | prpplague | ahh yea, thats one of their newer ones |
| 22:03.02 | myren | i'm waiting for nvidia + amd/ati to release mobile cpus with integrated gpus, but its interesting seeing these early multimedia accelerating uc's |
| 22:05.00 | myren | what is ep93x? |
| 22:05.06 | myren | ep93xx? |
| 22:06.03 | prpplague | cirrus logic arm9 device |
| 22:07.00 | MonMotha | I'm not a fan of cirrus |
| 22:07.10 | MonMotha | they wouldn't give me a printed copy of the PS7500 docs |
| 22:07.14 | MonMotha | in fact, they wouldn't even give me a PDF |
| 22:07.18 | MonMotha | I had to find an old copy myself |
| 22:07.24 | prpplague | MonMotha: yea, their arm chips seem nice, if not somewhat lacking in their support of OSS |
| 22:08.08 | myren | right now i'm just looking for a good arm uC for extremely low powered personal sensor-net |
| 22:08.26 | myren | i figure the whole game is changing too rapidly to start ditzing with graphics |
| 22:08.44 | myren | anything i learn now for graphics will be totally outclassed in the year |
| 22:08.53 | prpplague | myren: how low power? |
| 22:09.39 | myren | two days off of two double a batteries is the goal |
| 22:09.51 | MonMotha | you really need the horsepower of an ARM? |
| 22:10.06 | MonMotha | they get good, but not great (two days off 2 AAs should be doable, though) |
| 22:10.19 | MonMotha | I've done some stuff with AVR that'll run for months on a coin button battery |
| 22:10.33 | myren | actual processing power will be periodically required |
| 22:10.38 | MonMotha | ok |
| 22:10.49 | myren | :) |
| 22:11.01 | MonMotha | I must be frank that I'm a bit biased towards Atmel, but not because I work for them. They're just really nice and OSS friendly |
| 22:11.41 | myren | their products dont seem competitive to me |
| 22:11.45 | myren | integration wise they're wonderful |
| 22:11.54 | myren | the experience of using them is great |
| 22:12.14 | MonMotha | they tend to not go for outright horsepower |
| 22:12.26 | myren | yeah. |
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| 22:12.51 | MonMotha | the big issue I have is getting samples/buying 1-5 of things from people like NXP (formerly Philips) |
| 22:12.56 | myren | i like more computer sized environments, where i can throw linux onboard and start compiling libraries to it |
| 22:12.56 | prpplague | we uses plenty of atmega chips |
| 22:12.57 | MonMotha | it's hard |
| 22:13.16 | myren | MonMotha: can you get the documentation you need? |
| 22:13.17 | MonMotha | IIRC, Atmel still has the "ARM du jour" for running linux |
| 22:13.35 | MonMotha | AT91RM9200 |
| 22:13.41 | MonMotha | though they have some newer ones that are even nicer |
| 22:13.51 | MonMotha | Atmel is GREAT with docs, NXP is OK |
| 22:13.55 | myren | NXP parts are available through redistributors was my understanding |
| 22:13.56 | MonMotha | Motorola tends to be good |
| 22:13.58 | MonMotha | Intel is great |
| 22:14.11 | MonMotha | you usually ahve to buy at least 10-20 of stuff from NXP |
| 22:14.27 | MonMotha | and for initial prototyping, that can be a few too many |
| 22:14.35 | myren | you cant just go to mouser or alliance and buy 4 pieces? |
| 22:14.41 | MonMotha | not of NXP micros |
| 22:14.46 | myren | damn. :( |
| 22:14.54 | MonMotha | sometimes you can convince Arrow to sell you 5 or so |
| 22:14.56 | myren | is their I2C gear available? |
| 22:15.07 | myren | or is it again, only for high volume? |
| 22:15.15 | MonMotha | I don't think Mouser or Digi-Key distributes NXP, so you'll be limited to Arrow/Avnet |
| 22:15.23 | MonMotha | or local reps |
| 22:15.27 | myren | i dont see much of an alternative for I2C for sensor nets |
| 22:15.28 | MonMotha | the thing to do is get to know your local reps |
| 22:15.43 | MonMotha | maxim and atmel both do bunches of I2C |
| 22:15.50 | MonMotha | maxim also makes sensors |
| 22:15.51 | myren | local NXP rep? not a bad idea, if there is one that services Colorado |
| 22:16.00 | MonMotha | there's probably more than one for CO |
| 22:16.21 | MonMotha | heck, there's two just for central Indiana (one in Indianapolis, one in Kokomo for Delphi) |
| 22:16.27 | MonMotha | for Atmel, at least |
| 22:16.33 | MonMotha | I think the Kokomo guy does NXP |
| 22:17.14 | myren | am i correct in noting that most sensor solutions appear to be I2C these days? |
| 22:17.35 | MonMotha | analog, I2C, or PWM seem common |
| 22:17.38 | MonMotha | some are SPI |
| 22:17.55 | MonMotha | your average micro is well equipped to handle any of the above |
| 22:28.12 | myren | w/in 13 |
| 22:28.17 | myren | erp, pardon |
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| 23:49.59 | T0mW | myren: DigiKey has LPC2000 parts |
| 23:50.01 | T0mW | myren: typical LPC2000 runs about 40ma @ 60MHz |
