--- Log opened Sun Feb 20 00:01:37 2011
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00:05 < user890104> Receiving data from cin... OK!
00:05 < user890104> 02 00 00 00 00 00 00 08 00 00 f8 09 00 00 04 00 Transfer OK!
00:05 < user890104> \o/
00:14  * user890104 realized that he's actually sending some junk to the ipod instead of the data he needs to send
00:17 < user890104> TheSeven: i am a bit confused about the endianess, i think i fail there
00:18 < user890104> here's what i got so far
00:18 < user890104> Sending: 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 00 OK!
00:18 < user890104> Receiving: 02 00 00 00 00 00 00 08 00 00 f8 09 00 00 04 00 OK!
00:18 < fmibot> New commit by theseven (r631): emCORE: Kill a leftover "emBIOS" string that Farthen's batch operations didn't catch
00:18 < fmibot> r631 build result: emcore: All green!
00:19 < fmibot> r631 build result: embios: All green!
00:19 < user890104> i am trying to request device information -> version information
00:19 < TheSeven> you got the endianness of the command packet wrong
00:19 < user890104> how should it be?
00:21 < TheSeven> 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00:24 < user890104> i get the same response
00:26 < user890104> http://pastie.org/1584045 - source, http://pastie.org/1584046 - result
00:31 < user890104> restarting the ipod fixed it
00:46 < user890104> Connected to IN2G running emCORE v0.1.4 r623
00:46 < user890104> the first meaningful message outputed so far
00:48  * S_a_i_n_t hasn't been following, and wonders what user890104 is trying to achieve/accomplish
00:49 < user890104> S_a_i_n_t: i am writing a client-side library on the top of libusb (in C), that communicates with emCORE devices
00:50 < user890104> my final goal is to make a FUSE wrapper, which will use emCORE's filesystem API
00:51 < user890104> TheSeven is doing the same, but for Windows :)
00:51 < user890104> so if anyone manages to get his ipod in a weird condition, he would be able to access the flash/hdd without using any python scripts
00:51 < TheSeven> ...and using a way more sane programming language (c#)
00:52 < S_a_i_n_t> TheSeven: what language are you using for this?
00:52 < TheSeven> as i just said, c# :)
00:52 < S_a_i_n_t> you did?
00:53 < S_a_i_n_t> [13:52] <TheSeven> ...and using a way more sane programming language
00:53 < S_a_i_n_t> (I'll take your word for it ;))
00:54 < TheSeven> what the heck?
00:54 < TheSeven> did your irc client parse that as an emoticon?
00:55  * S_a_i_n_t shrugs.
00:55 < S_a_i_n_t> I see the "I just said...", but no prior instance, probably my clinet freaked out. sorry.
00:55 < S_a_i_n_t> *client too.
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02:17 < user890104> is there any documentation available (or just quick notes) for emCORE's FS functions?
02:17 < TheSeven> mainly the source code of emcore and libemcore
02:17 < TheSeven> i haven't got around to documenting them in the wiki yet
02:18 < TheSeven> also, i currently have a local change that adds a function to determine the total/free space on the partition, as my win32 fs driver needs that
02:19 < Fiber-> hey :)
02:21  * user890104 doesn't understand this part: struct.pack("<IIII%dsB" % len(filename), ...
02:22 < user890104> (that's from file_open)
02:23 < user890104> 4 ints, then what?
02:25 < user890104> another integer with the filename length, then the filename itself?
02:27 < user890104> i think i got it .. s stands for string, and B for the terminating NULL byte
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04:07 < geek7> TheSeven: ME! ;p
04:07 < geek7> though i'm heading out in a few seconds, so i can't test anything just about now
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13:24 < user890104> could someone help me out with this please: http://pastie.org/1585613
13:24 < user890104> i need to fill the first 16 bytes with constant data, then copy the path right next to it, then add a null byte
13:32 < benedikt93> user890104, I don't have much clue of C, but don't you need to dereference "out" in line 8?
13:33 < user890104> benedikt93: if i add a slash and a null byte to the string that i'm filling "out" with, then comment the following 2 lines, it works
13:34 < user890104> but i need to construct the string for other paths, not oly the root directory
13:34 < user890104> so this kind of assignment works, the following 2 lines are wrong
13:36 < benedikt93> yeah, but out = whatever changes the pointer itself, not the data it points to
13:37 < benedikt93> so, you'd result in an invalid pointer afterwards and maybe also overwrite some other heap/stack data
13:38 < user890104> damn ... i should have learned C more at school :)
13:38 < user890104> so i'm not writing where i should at all
13:41 < benedikt93> also, I'm not sure what the compiler makes out of 'out = "\x2a\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";', I could imagine some strcpy or so, which would quit after hitting the first "\0"
13:47 < benedikt93> so probably char[16] temp = {'\x2a', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0'}; memcpy(out, temp, 16 * sizeof(char)); would do the trick in case it does not work otherwise
13:58 < user890104> benedikt93 thanks for the idea, here's how i did it:
13:58 < user890104> memset(out, 42, 1);
13:58 < user890104> memset(out + 1, 0, data_length - 1);
13:58 < user890104> memcpy(out + 16, dir_name, dirname_length);
14:00 < teuf> user890104: out[0] = 42; would be more natural for the first line
14:04 < user890104> teuf: thanks
14:05 < user890104> TheSeven: the connection times out after sending this packet:
14:05 < user890104> 2a 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00
14:05 < user890104> 2f 2e 62 6f  6f 74 00
14:05 < user890104> i am trying to get a dir handle for "/.boot"
14:11 < TheSeven> [14:41] <benedikt93> also, I'm not sure what the compiler makes out of 'out = "\x2a\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";' << it writes a pointer to that (constant) string in the .data section into the "out" variable
14:13 < TheSeven> user890104: how big are your timeouts?
14:13 < TheSeven> opening a directory may take like second on a nano2g and 5 seconds on a classic if the drive is spun down
14:27 < user890104> the timeout is 5 seconds, i am testing on nano2g and i suspect that i'm not the same data that gets printed
14:27 < user890104> or maybe i am setting the wrong sedning length
14:27 < user890104> so a string without terminating null byte arrives, and emcore doesn't handle it correctly
14:28 < TheSeven> might be possible
14:28 < TheSeven> if you want to be safe, just send the full 512 bytes
14:29 < TheSeven> the ipod will just discard excessive garbage at the end of the packet
14:31 < user890104> i've made a function that takes 4 arguments: data out, data in, length out, length in
14:32 < user890104> then sends the data and waits for the required bytes of response
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15:18 < paulo_> crashed again
15:18 < paulo_> via pedometer app
15:19 < paulo_> still not an overflow though...
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17:35 < user890104> in which case should an application use dma for reading/writing memory?
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18:08 < benedikt93> user890104, for larger chunks of data. see the libemcore implementation ("write") which splits data for write operations
18:23 < TheSeven> user890104: generally for everything that doesn't fit into a single command pipe packet, and is aligned to a cacheline boundary
18:28 < fmibot> New commit by theseven (r632): Fix the library linker scripts as well, they apparently got lost
18:28 < fmibot> r632 build result: emcore: All green!
18:28 < fmibot> r632 build result: embios: All green!
18:29 < fmibot> New commit by theseven (r633): Installer for iPod Classic: Zero out sector buffers correctly
18:30 < fmibot> r633 build result: emcore: All green!
18:30 < fmibot> r633 build result: embios: All green!
18:31 < fmibot> New commit by theseven (r634): emCORE: Add an API to request the number of total and free kilobytes on a volume
18:31 < fmibot> r634 build result: emcore: All green!
18:31 < fmibot> r634 build result: embios: All green!
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18:49 < user890104> resources.S:215: Error: file not found: flashfiles/rockbox.ipod.ucl
18:49 < user890104> isn't it supposed to skip this if it's not present?
18:52 < TheSeven> no, it can't detect that
18:52 < TheSeven> that's the only file you'll need to provide manually
18:53 < user890104> so i need to put a rockbox build into the folder, right?
18:54 < fmibot> New commit by theseven (r635): emCORE: Prevent directories from being opened like files
18:54 < fmibot> r635 build result: emcore: All green!
18:54 < fmibot> r635 build result: embios: All green!
18:55 < fmibot> New commit by theseven (r636): emCORE: A bunch of cache coherency fixes
18:55 < fmibot> r636 build result: emcore: All green!
18:55 < fmibot> r636 build result: embios: All green!
18:56 < TheSeven> user890104: yes, compressed using "ucl2e10singleblk /path/to/rockbox/builddir/rockbox.ipod rockbox.ipod.ucl"
18:57 < user890104> ok, thanks
18:59 < user890104> TheSeven: do you have any plans of changing the menu+play combination that confirms the intro screen at emcore's installer
19:00 < user890104> as you said, it's a bit tricky to get the buttons pressed
19:00 < TheSeven> user890104: I hope that it's a bit better now after yesterday's commits
19:01 < user890104> i'll make another build of the most recent code, and test it
19:02 < TheSeven> previously you had to press the buttons at exactly the same time, which made it nearly impossible
19:03 < user890104> how is your filesystem wrapper work going? i am currently implementing the readmem command in order to be able to access the directory structures
19:03 < TheSeven> now you just need to reach a state where exactly those two buttons are pressed, no matter if some other button gets briefly pressed as well
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21:18 < fmibot> New commit by theseven (r637): emCORE: Fix duplicate definition of ata_num_drives for the iPod Classic
21:18 < fmibot> r637 build result: emcore: All green!
21:19 < fmibot> r637 build result: embios: All green!
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23:02  * user890104 wonders why his virtual machine crashes so often while doing usb transfers
--- Log closed Mon Feb 21 00:01:39 2011