IRC log for #edev on 20110321

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15:43.00prpplagueGPSFan: videos of ELCE are up - http://free-electrons.com/blog/elce-2010-videos/
15:43.13prpplagueGPSFan: should watch my presentation and give me some feedback, hehe
15:45.13GPSFanprpplague, I will, how was the confrence?
15:46.04prpplagueGPSFan: it was pretty darn good
15:46.14prpplagueGPSFan: enjoyed it
15:46.23prpplagueGPSFan: speaking at ELC in april
15:46.33prpplagueGPSFan: hopefully do a little better this time
15:50.59GPSFanprpplague, lots of neat looking videos, puts faces to a lot of names from many years of linux dev...
15:51.07prpplagueGPSFan: indeed
15:51.12prpplagueGPSFan: tons of folks were there
15:52.55GPSFanprpplague, I'm going to be totally swamped till early April, (shearing etc.) but I'll try and keep the kernel building pages up to date as interesting things pop up.
15:53.07prpplagueGPSFan: understood
15:53.26prpplagueGPSFan: 2.6.39-rc1 should have my regulator patch
15:53.47GPSFanyea, I'm expecting to see -rc1 any time now.
15:54.00prpplagueyea, i was just checking to see if it was out
15:54.52prpplagueGPSFan: feedback on the video would be greatly appreciated
15:54.58prpplague(don't hurt me too bad)
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15:57.03GPSFan;>)) I'll try to watch it today.
15:58.33prpplagueGPSFan: my presentation in april will deal more with the actual open hardware and software tools
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17:07.57MirellHmm.
17:09.26prpplagueMirell: you said it brother!
17:09.37*** mode/#edev [+o prpplague] by ChanServ
17:09.38MirellIndeed, Senator.
17:09.58prpplaguesenator?
17:10.19MirellIt seemed the thing to say.
17:10.54prpplagueMirell: hehe, interesting
17:11.38prpplagueMirell: i guess you attended a bunch of that SXSW stuff?
17:11.58MirellHell no.
17:12.28MirellSXSW Interactive is a giant circle-jerk of social media harpers declaring how awesome they are to each other.
17:12.40MirellThat and it's too expensive.
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17:17.53pytey_Mirell: lol, can I quote that and tweet it?
17:18.00MirellSure.
17:18.45pytey_are you @Mirell
17:18.53MirellIndeed.
17:18.56pytey_k :)
17:23.10*** join/#edev grummund_ (~grummund@unaffiliated/grummund)
17:23.17pytey_Mirell: https://twitter.com/pytey/status/49883704675401728
17:23.18pytey_:)
17:23.24pytey_I'm still laughing
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17:31.31MirellHeh. I first and last attended SXSW Interactive in 2004.
17:33.57MirellAh, nice, you're on the iPhone Dev Team thingie.
18:14.43chouimathi
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18:28.53new_devHello all
18:29.03a7rhello
18:29.15new_devi have one question
18:29.24a7rshoot
18:29.37new_devoki ;)
18:30.22new_devfor SD memory card why when comunicating at 50MHz, we can reach only 25 MB/s?
18:35.36new_devwith 1-bit by rising edge, we can reach 50MB/s is it correct?
18:37.47a7rnew_dev: it depends on the card, how you're talking to the card, etc.
18:38.59a7rif you're talking SPI, you're not going to see 50 MB/s at 50 Mhz.  You'd be lucky to see 50 mb/s
18:39.24new_devusing SD host with 1-bit interface
18:40.05new_devI'm just reading the spec
18:40.33new_devhttp://www.sdcard.org/developers/tech/sdcard/pls/simplified_specs/Part_1_Physical_Layer_Simplified_Specification_Ver3.01_Final_100518.pdf
18:41.13new_devpage 13 and 14
18:41.54new_devfigure 3-8 3-9
18:42.55new_devif you compare the max frequency to the max throuput you will see that @50MHz we reach only 25MB/s
18:44.43new_deva7r, sorry i get it now!!
18:45.09a7raha, ok.
18:45.12new_devwith 4-bit if, we need two clock cycles to transfer 1 byte
18:45.16a7ryes.
18:45.20new_dev:$
18:45.29new_devI'm not oki today :p
18:45.31new_devsorry
18:45.33new_dev:)
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18:50.11new_devwith my 1-bit interface I can reach only the 6.25MB/s :s
18:52.17a7rwhat kind of card and host contorller?
18:55.27new_devan SDHC, and Atmel MCI controller
18:56.37a7rah
19:00.12pytey_Mirell: yep
19:00.13new_devit's Atmel processor with MCI interface
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22:54.12*** topic/#edev is Discussion of embedded systems (Hardware/Software/Linux/WinCE/Commercial Device Repurposing) : Busybox and Buildroot : http://www.elinux.org
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