IRC log for #edev on 20070712

00:16.28CosmicPenguinokay -  so the movie showtimes maplet in google maps
00:16.30CosmicPenguinthats pretty damn cool
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02:19.31chouimatHEY!
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04:48.33*** topic/#edev is a channel for the discussion of hacking small consumer electronic devices, mostly ARM based
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14:29.35prpplagueCosmicPenguin: i can't figure out why i'm always working on things that there is no one to talk to about
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14:39.41chouimatmorning
14:40.32prpplaguechouimat: greetings canadian earthling
14:48.58CosmicPenguinWElcome to my world
14:49.08CosmicPenguinuntil OLPC came along, *nobody* talked Geode
14:56.47CosmicPenguinprpplague: you glancing in at #olpc?  They might be talking about something that interests you
14:56.58prpplagueCosmicPenguin: yea
15:03.01prpplagueCosmicPenguin: i'm really known by most of the olpc folks, so i just kind of just sit and listen
15:03.40prpplaguei/not
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15:33.27prpplaguehmm, me thinks me has an endian problem
15:42.02prpplaguehmm
15:42.17prpplagueCosmicPenguin: my sizeof command seems to  be returning an odd value
15:42.42davidc__3?
15:43.23prpplaguedavidc__: hehe, 42 ofcourse
15:43.38CosmicPenguinsizeof() what?
15:43.43prpplaguedavidc__: seriously though, its returning 38 and i'm expect 33
15:43.50CosmicPenguin33 % 2 == 1
15:43.57prpplagueCosmicPenguin: sizeof(mystruct)
15:43.58davidc__are you using attribute((__packed__)) ?
15:44.19davidc__or whatever it is [think my syntax was slightly focked there]
15:45.31CosmicPenguin32 bit system?
15:45.34prpplagueCosmicPenguin: yea
15:46.24CosmicPenguinthat seems reasonable then - 38 is 9 dwords and a word
15:46.49prpplagueCosmicPenguin: yea, problem is that it doesn't match the packet format
15:47.03davidc__prpplague, can you pastebin your struct def somewhere?
15:47.11CosmicPenguinso you probably have a double whammy of packing and endianism
15:47.31prpplagueCosmicPenguin: yea, thats what i'm thinking
15:47.34prpplaguedavidc__: yea one sec
15:50.20prpplaguedavidc__: http://www.pastebin.ca/616288
15:51.56davidc__I count that as being 38 bytes long
15:52.42davidc__5 x 4 + 6 + 6 * 2
15:52.45CosmicPenguinyep - 38
15:53.21davidc__and it does look like its packed ok
15:53.39CosmicPenguinyep - it is naturally packed
15:53.45CosmicPenguinand natural is better for you and the environment
15:54.34prpplaguedoh missed the 1x6 for the MAC
15:55.11CosmicPenguinrookie mistake... :P
15:55.11prpplaguehehe
15:55.12prpplagueno need to run
15:55.25davidc__nah, its not naturally packed, theres a dword on a 2 byte boundary
15:55.32prpplaguethanks guys
15:56.14chouimatyay!!! finally a good news
15:56.23CosmicPenguinahh - nice eye
15:56.44davidc__rrrr.. stupid linux kernel regressions
16:24.08CosmicPenguingrr - doxygen is precisely complex enough that I don't want to keep it in my brain
16:24.21CosmicPenguinso every time I need to use it, I need to reteach myself the syhntax
16:25.33CosmicPenguinA pox on applications that are just useful enough that we're willing to forgive their transgressions
16:37.34prpplaguechouimat: good news?
16:37.51chouimatprpplague:  http://www.kdedevelopers.org/node/2872
16:42.55prpplaguechouimat: ahh good
16:43.59prpplagueCosmicPenguin: still haven't figured out whats going wrong with this command processing :(
16:44.59chouimatprpplague: finally over ... I just got the cvs repo on a dvd and it's full of 75MB+ diff files :(
16:45.32prpplaguechouimat: lovely
16:51.50chouimatprpplague: the funny thing is he must have spent a lot of time to produce those files ;)
16:58.08prpplaguechouimat: yea, personally i feel there is something kind of weird about computer work when paid by the hour, if you are a terrible tech/programmer and take 8 hours to do something that should take just 1, you get paid more
16:59.28chouimatprpplague: it's part engineering and part art but I doubt a lot of people will like to be paid "per job"
17:00.41prpplagueCosmicPenguin: looks like the sdio controller isn't receiving an interrupt properly
17:02.57CosmicPenguinIt always pays to blame the SDIO
17:05.40prpplagueCosmicPenguin: yea, it seems that way
17:05.56prpplagueCosmicPenguin: i wonder what kind of announcement ossman is going to make about sdio
17:06.07prpplagueCosmicPenguin: suspect he's finished the mainline kernel sdio stack?
17:06.15CosmicPenguinHe's been working on it
17:06.38prpplague<dcbw> ossman: hi!
17:06.38prpplague<dcbw> ossman: how goes it in SDIO land?
17:06.39prpplague<ossman> morning
17:06.39prpplague<ossman> very well
17:06.39prpplague<dcbw> ossman: yay
17:06.40prpplague<ossman> I intend to make an announcement as soon as time is available
17:08.25CosmicPenguinThats good stuff
17:08.31CosmicPenguinI know he was casting about for victims
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18:47.15prpplaguehmm
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18:52.43prpplagueCosmicPenguin: ok buf is an array of u8's , and dat is a u32, if do buf=dat, does that populate buf[0:3] ?
18:53.24prpplagueCosmicPenguin: i normally mask those bytes and assign them seperately but i was just curious if that works
18:54.25sjhillprpplague: uh
18:54.31sjhillprpplague: it depends on what endianness
18:55.37prpplaguesjhill: ahh, yea that would influence it
18:55.41sjhillint chars_to_int(char *buf)
18:55.41sjhill{
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18:56.26sjhill}
18:56.28sjhillthat's a function i use
18:56.31sjhill*shrug* for what it's worth
18:57.16prpplaguesjhill: thanks, i'll keep that
18:58.21ds2isn't there something quicker with ntohl() ?
18:58.26ds2or htonl
19:00.42prpplaguesjhill: its little endian, but i was mainly curious if that was a "legal" way of doing the assignment
20:08.17prpplaguehmm
20:08.37prpplagueCosmicPenguin: still at a loss on the best way to do this conversion
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20:11.29CosmicPenguinwhy?
20:11.40CosmicPenguinyou can do a bulk conversion routine
20:12.12prpplagueCosmicPenguin: i think maybe i didn't explain what i'm trying to do
20:12.17prpplagueproperly
20:13.34prpplaguefwbuf[0] = ((tx_len & 0x000000ff) >>  0);  /* Little-endian */
20:13.34prpplaguefwbuf[1] = ((tx_len & 0x0000ff00) >>  8);
20:13.34prpplaguefwbuf[2] = ((tx_len & 0x00ff0000) >> 16);
20:13.35prpplaguefwbuf[3] = ((tx_len & 0xff000000) >> 24);
20:13.53prpplaguewhere fwbuf is u8 and tx_len is u32
20:14.00prpplaguethats how i normally would do this
20:15.03CosmicPenguinThat kind of makes my brain hurt
20:15.55CosmicPenguinwhat was your objection to ntohl()?
20:16.55prpplagueCosmicPenguin: because i'm not changing the byte order
20:17.17prpplagueCosmicPenguin: i'm changing one 32bit value into 4 8 bit values
20:17.41CosmicPenguinokay
20:17.49CosmicPenguinI guess I'm not groking
20:18.55prpplaguethe u32 contains 4 different 8bit values merged together, lets save location A, location B , Location C, and location D
20:19.14prpplaguei need to split the u32 up and place the correct values in the correct variables
20:19.38prpplaguebit 0:7 -> location A bit, 8:16 -> location B and so on
20:22.07CosmicPenguinokay
20:22.57prpplagueCosmicPenguin: is ther an easier way of doing that
20:23.20prpplagueCosmicPenguin: i mean if you said fwbuf=txlen
20:23.37prpplagueCosmicPenguin: shouldn't that do the same thing?
20:23.44CosmicPenguinfwbuf = (unsigned char *) &tx_len
20:24.04CosmicPenguinor memcpy(fwbuf, &tx_len, 4);
20:24.14prpplagueCosmicPenguin: memcpy is what i was thinking
20:24.19CosmicPenguinif you don't want to keep tx_len around
20:24.24CosmicPenguinalso
20:24.33CosmicPenguin*((unsigned int *) fwbuf) = tx_len
20:25.55prpplaguehmm
20:26.07prpplagueCosmicPenguin: i'll give a couple of those a try
21:19.09CosmicPenguinHere's a rule to live by
21:19.29CosmicPenguinWhen the color in the doppler radar gets to purple, thats bad
21:24.54Croftonhmmm
21:24.56Croftonwhere?
21:28.43CosmicPenguinColorado
21:28.48CosmicPenguinstandard operating procedure
21:29.34chouimat|busyCosmicPenguin: nice rain :)
21:34.20ds2a little water never hurt no one ;)
21:53.12CosmicPenguinohh - tornado warning
21:55.17Croftonwhere?
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