IRC log for #edev on 20081223

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00:18.20jcsolar: ok, I think I'll use fpa for starters
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02:04.30JohnnyLif i said i needed a device to help in reading in groceries (barscan reader) what platform would i have to look at?
02:15.55archae0pteryxThere are bluetooth barcode readers i think
02:16.25solarJohnnyL: you kinda hit the jackpot asking that question in this channel
02:16.55g1powermac_PBJohnnyL: I tell you, one of prpplague's handhelds sound perfect for what you want, albeit they aren't cheap
02:17.05solaraml makes barcode scanners. they are using the s3c24xx chips
02:18.14solara few of us are working on this one now. http://elinux.org/M8050
02:26.35JohnnyLsolar thanks
02:26.48JohnnyLg1powermac ok
02:27.14g1powermac_PBJohnnyL: yea, btw, the AML scanner is prpplague's handhelds, he works for AML :-)
02:29.00JohnnyLi am so tired.
02:29.03JohnnyLsee you guys l8r
02:29.06JohnnyLthanks again!
02:29.26g1powermac_PBya welcome
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06:07.31linuxdoctorAnybody here of linux being put on those MP3 players with the SigmaTel SMTP35xx in them?
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15:54.05*** join/#edev damunix (n=damien@ARennes-257-1-65-113.w81-53.abo.wanadoo.fr)
15:54.11damunixHi all
15:54.59damunixI have some problem with a Hammer kit http://www.tincantools.com/product.php?productid=16142&cat=250&page=1
15:55.12damunixanyone already succeded in making I2C work ?
15:58.44prpplaguedamunix: the i2c is fully supported in the kernel, is there something specific you are trying to accomplish?
15:59.26damunixmaking it work :)
15:59.42damunixwell some informations :
16:00.01prpplaguedamunix: you have to have a goal in mind to "make it work"
16:00.20prpplaguedamunix: you goal will determine which options you need to turn on
16:01.09damunixI'm preaty new to linux on embedded devices. I know linux very well on desktop. I'm actually working with 8 bits AVR uC, and I already make some program for ARM 7 TDMI (with no OS)
16:01.45damunixand now, I try to make I2C work for my Linux on Hammer board, with 5V switching, to speak with an AVR
16:02.30damunixmy first problem was to have the i2c device on /dev (dmesg said that it was ok, driver loaded, but no /dev/i2C-0, so I add it in device_table.txt)
16:02.33prpplaguedamunix: that is a pretty detailed operation due to the fact that your avr code needs to work properly, and you will have to write a kernel driver on the linux side to talk to it
16:03.00prpplaguedamunix: you are trying to use userland access to talk via i2c?
16:03.03damunixbut first question, how to be shure that /dev/i2c-0 is really connected to i2c hardware module
16:03.09damunixyes userland
16:03.45damunixThe AVR code is not ready, I'm shure, but I try to send signals, Jsut to geneate ISR on my AVR
16:05.58prpplaguedamunix: can you post your dmesg on www.pastebin.ca ?
16:07.18prpplaguedamunix: when you add the i2c-0 device node, what major/minor did you use?
16:07.39damunixthe line : /dev/i2c-   c   640   0   0   7   0   0   1   2
16:09.52prpplagueuh that doesn't look correct
16:10.02prpplaguedamunix: did you try adding it manual first?
16:10.30prpplaguedamunix: did you read the documentation on i2c device nodes in the linux kernel tree?
16:10.36damunixhow ?
16:11.07prpplaguedamunix: mknod /dev/i2c-0 c 89 0
16:11.09damunixyeah I read documentation related to i2c on Documentation folder
16:11.14damunixno never try
16:11.29prpplaguetry that first to make sure you have the correct major/minor
16:11.31damunixjust a minute, I pastbin
16:12.35damunixhttp://pastebin.com/m56b6b48e
16:13.19prpplaguelooks
16:13.59damunixis there any command line tool which would tell me if /dev/i2c-0 is "plug"
16:14.03prpplagueyea that looks fine
16:14.14prpplagueis "plug" ?
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16:14.59damunixprpplague: I need to re-flash, but If I try  mknod /dev/i2c-2 c 89 0, it should make it ? cause I ahve a "no space on device"
16:15.21damunixis plug, I mean, if it is connected to something in kernel space
16:15.57damunixOo, just a thing : I post that question on the forum
16:16.07damunixhttp://www.tincantools.com/forum/viewforum.php?f=5
16:16.19damunixand another one http://www.tincantools.com/forum/viewforum.php?f=9
16:16.20damunix:)
16:16.30prpplaguedamunix: no, there is no way to directly know, you can get a list of the devices available with /proc/devices
16:16.38prpplaguedamunix: i.e. cat /proc/devices
16:16.45damunix;)
16:16.58damunix<PROTECTED>
16:17.27damunixand mknod of i2c-2 should work ?
16:17.59prpplaguedamunix: should
16:18.40damunix...
16:18.51damunixok, so I flash and I try
16:28.12damunixmk
16:28.20damunixmknod ok
16:28.39damunixmknod /dev/i2c-0 c 89 0 => give me a device in /dev
16:28.54damunixsecond step ?
16:28.56damunix:)
16:31.16prpplaguedamunix: do whatever it is that you want to do with the device
16:31.40damunixlol
16:32.32prpplaguedamunix: see the documentations in the kernel source, it has some example code
16:33.11damunixhttp://pastebin.com/m2e4f12c0
16:33.23damunixI read and I write that
16:33.47damunixshould this work ?
16:34.06prpplaguejust from a quick look that appears to be the general idea
16:34.15prpplaguenever uses userland access
16:34.22damunixlol
16:34.43damunixon the kernel documentation, I read that I need to add a if (ioctl(file,I2C_SLAVE,addr) < 0)
16:35.00damunixbut this make an error like "no ioctl available for this device"
16:35.35damunixcause tell me if I'm wrong, but shouldn't I need to say to the kernel to be a master ?
16:37.45prpplaguedamunix: like i said, i _never_ use userland for i2c, it is too slow and cumbersome
16:38.18damunixk
16:39.04prpplaguedamunix: i hear alot of people who try to use userland i2c to communicate with avr's, which seems totally foreign to me
16:39.18damunixok no pb
16:39.36damunixI just need to be in userland so... :p
16:41.10damunixOo
16:41.13damunixwork
16:41.20damunixit works
16:41.31damunixok jsut a node problem
16:41.37damunixthanks a lot
16:41.46prpplaguedamunix: dandy, please please register on elinux.org and document you success
16:41.55damunixa week lost for nothing
16:42.09damunixyes I think I should now :)
16:42.40damunixdo you have a bit more time ? just a stupid question related to the second thread in the forum
16:42.52damunixhttp://www.tincantools.com/forum/viewtopic.php?t=508
16:43.11damunixit is not really clear on the wiki
16:43.21damunixwhat do you speak about ?
16:46.15mnemocjoy, happiness and success :)
16:46.22prpplaguedamunix: http://www.elinux.org
16:46.29prpplaguedamunix: did you not check the documents there?
16:47.33damunixmy problem is the documentation ;)
16:51.13damunixwhat are you speaking about, compressed rootfs or not ?
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17:11.32prpplaguedamunix: yes those are compressed sizes
17:12.06damunixok
17:15.00prpplaguedamunix: all documentation on elinux.org is available to edit
17:15.10prpplaguedamunix: you can create your own documentation there as well
17:15.12damunixyes I know :)
17:15.16damunixYes I will
17:15.17damunix:)
17:15.29damunixno pb
17:29.55damunixthanks !
17:29.56damunixbye
17:37.48g1powermac_PBhey prpplague
17:38.49prpplagueg1powermac_PB: hey
17:39.50g1powermac_PBhows it going?
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17:50.33prpplagueg1powermac_PB: it's going
17:50.45prpplagueg1powermac_PB: trying to finish up a few items on my oe build
17:50.51prpplagueg1powermac_PB: suppose to be on holiday
17:54.22g1powermac_PBahh, fun
17:55.12g1powermac_PBwell, I can say one thing, people aren't shopping as much as they did last year for christmas
17:55.28g1powermac_PBour sales are down for this final week
18:07.35Crofton|workg1powermac, what business are you guys in?
18:08.41g1powermac_PBwe're primarily a shoe store, but we do have lots of clothing and other niche products
18:09.10g1powermac_PBinterestingly enough, our sales have been up for this year right up to this week
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23:09.27wladstonguys, I'm trying to read a page from a NAND flash chip. I know that I got the WE, RE, CE, ALE and CLE right because I can read the correct chip id. When reading the page, however, it's as if the page address got lost in the middle, because the read always returns the same, regardless of what address I pass. I've quadrupled checked the datasheet and my code, I really can't find the issue. Would LOVE some advice.
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