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| 05:25.54 | enlight22 | the edevians, hows it going |
| 05:28.41 | a7r | hey |
| 05:28.52 | a7r | enlight22: what's up? |
| 05:29.14 | enlight22 | Hello a7r |
| 05:29.20 | enlight22 | hows it going |
| 05:36.24 | enlight22 | in search of the linux embeded systems experts |
| 05:36.27 | enlight22 | lol |
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| 05:48.55 | a7r | enlight22: what're you working on? |
| 05:49.36 | enlight22 | a samsung scs-26uc femtocell running linux on an OMAP1710 (sold as a sprint airave) |
| 05:50.30 | a7r | sick |
| 05:51.57 | enlight22 | initially, i have located a serial console brought out to test pads, figured out what they did to stop be from interrupting u-boot, and and 2 ngihts ago someone in #edev called sjhill helped me modify an environment variable to get root |
| 05:52.14 | enlight22 | and turnon the watchdog process so the thing would quit rebooting on its own |
| 05:54.51 | enlight22 | but what i think is going on, is durring a normal boot, after loading the initial linux environment, it mounts a different root, and boots a different linux where all the magic is happening |
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| 06:53.04 | *** mode/#edev [+o sjhill] by ChanServ |
| 06:53.44 | sjhill | anyone up? |
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| 10:16.13 | RushPL_ | hello, is anyone experienced in SSD2119 or ILI9338 TFT display drivers? I have one landscape display that does vertical scrolling .. and one portrait display that does vertical scrolling (by rotating the display I can get horizontal scrolling). I would like to know if it is possible to somehow reprogram the TFT display controller on the landscape display to do vertical scrolling .. or maybe find a good landscape display with good viewing |
| 10:16.14 | RushPL_ | <PROTECTED> |
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| 14:43.27 | enlight22 | ahoy sjhill |
| 14:44.43 | enlight22 | RushPL_: what is it u wanna do? |
| 15:05.13 | enlight22 | Anyone awake? |
| 15:12.00 | enlight22 | :( |
| 15:59.52 | enlight22 | so there is noone |
| 16:01.50 | SpeedEvil | I'm awake. |
| 16:05.46 | enlight22 | ahh |
| 16:05.49 | enlight22 | greetings SpeedEvil |
| 16:05.51 | enlight22 | how are things |
| 16:06.43 | SpeedEvil | I'm busy erecting tarps to put my stuff form the house under, while I'm doing work on that, so exhausted. |
| 16:07.13 | enlight22 | whats wrong with the house? |
| 16:07.23 | enlight22 | u werent in that place that was hit by tornado were u |
| 16:08.05 | SpeedEvil | Naah. |
| 16:08.11 | SpeedEvil | Terminal lack of insulation. |
| 16:08.22 | SpeedEvil | I need to rip out walls + floor + ... and insulate, and put them back. |
| 16:08.22 | enlight22 | oh, my house suffers from the same thing :( |
| 16:08.27 | SpeedEvil | This is sligjtly disruptive. |
| 16:08.38 | enlight22 | what i get for buying a house built in the 60s when energy was cheap, lol |
| 16:08.51 | SpeedEvil | Once it's done though, my heating bills should go to between 1/4 and 1/5 |
| 16:09.08 | enlight22 | oh, cool, i have the opposite problem |
| 16:09.13 | enlight22 | need my cooling bills to go down |
| 16:09.15 | SpeedEvil | Same problem really. |
| 16:09.27 | enlight22 | true |
| 16:09.37 | SpeedEvil | In that the same solution generally works. Insulate the hell out of it, pay attention to air leaks, ... |
| 16:09.46 | enlight22 | heheh |
| 16:10.05 | enlight22 | i dont think i suffer from air leaks, except that my entire house is a giant air leak from having no insulation |
| 16:10.11 | enlight22 | but as far as the doors and windows are concerned |
| 16:10.15 | enlight22 | im fine there |
| 16:11.26 | SpeedEvil | Windows are a popular thing to focus on, as the replacement window industry has pushed that in the popular conciousness - generally they are very indifferent paybacks though. |
| 16:11.38 | enlight22 | yeah |
| 16:11.46 | enlight22 | fortunatly the previous owner fell for that scam |
| 16:12.03 | enlight22 | got all new double pained windows and insulated doors |
| 16:12.29 | SpeedEvil | Sitting down with a proper spreadsheet, and going through all the U values is enlightening. |
| 16:12.39 | enlight22 | ugh, maths |
| 16:12.43 | SpeedEvil | :) |
| 16:12.49 | SpeedEvil | It's at least fairly simple maths. |
| 16:13.03 | enlight22 | if its in a spreadsheet, ill let the computer do the maths |
| 16:13.38 | SpeedEvil | I did a nice spreadheet tfor it, and then found that kspread has an annoying bug, where it loses all cell-names on save. |
| 16:13.44 | SpeedEvil | That was really, really annoying. |
| 16:14.08 | enlight22 | omg, that sounds like the horribleness |
| 16:14.27 | enlight22 | whatever spreadsheet openoffice comes with is probably the one id use |
| 16:14.36 | SpeedEvil | yeah. |
| 16:16.21 | enlight22 | im working on a project of my own |
| 16:16.38 | enlight22 | for which this channel has proven emensly helpful, when ppl are actually awake in it |
| 16:20.03 | SpeedEvil | What is it? |
| 16:23.06 | enlight22 | i have this samsung scs-26uc femtocell sold as sprint airave |
| 16:23.20 | enlight22 | that i am trying to get to work here in china |
| 16:23.54 | enlight22 | i have already found the console pins, and yesterday sjhill helped me to get a shell, and today i figured out how to stop the watchdog timer |
| 16:24.02 | enlight22 | its running montavista linux on an OMAP 1710 |
| 16:26.37 | enlight22 | on my list of things to do is, find the root password, find out how and why it prevents anyone except the gateway machine from logging into the web interface,(already recoverd web interface password) change the sprint parameters to verizon parameters, spoof the gps location but not timing either in software on the device, or by man in the middling the gps serial line, and enabling it to connect to my vpn before it tries to connect to verizons |
| 16:26.50 | enlight22 | oh, and backup somehow the complete firmware image in case i brick it, lol |
| 16:27.10 | SpeedEvil | Neat! |
| 16:27.11 | enlight22 | and get ssh access so i can quit the lame serial console |
| 16:27.34 | SpeedEvil | Serial line to fake the GPS is possibly easy if it's a NMEA stream. |
| 16:27.41 | enlight22 | it isnt |
| 16:27.41 | SpeedEvil | Otherwise it may be really, really annoyin |
| 16:27.42 | SpeedEvil | g |
| 16:28.02 | enlight22 | i already hooked up the gps through my bus pirate, appears to be some trimble propriatary format |
| 16:28.29 | SpeedEvil | There are trimble binary formats wich are well known I thought |
| 16:28.42 | SpeedEvil | You can fake a GPS transmitter - but this isn't really very trivial. |
| 16:28.42 | enlight22 | but it would be even cooler to hook the serial port in software, and run a program on the device to spoof it |
| 16:28.45 | SpeedEvil | yeah |
| 16:28.58 | enlight22 | they may be well known, but it isnt well known to me,i know nmea, lol |
| 16:29.35 | enlight22 | it needs the timing to work properly, i just need to spoof the location, and correct the timing code to one that is present in the us |
| 16:29.46 | enlight22 | cause im at +8gmt, and florida is -5gmt |
| 16:30.25 | enlight22 | but im at a bit of a loss as i only switched to linux desktop environment 1.5 years ago |
| 16:30.33 | SpeedEvil | :) |
| 16:30.50 | SpeedEvil | google gpsbabel |
| 16:30.56 | SpeedEvil | maybe it's got something tht'll help |
| 16:31.13 | enlight22 | hehe, im sure i can manage the gps stuff |
| 16:31.29 | enlight22 | but im googling anyway |
| 16:31.38 | enlight22 | there is no text editor on this thing |
| 16:31.59 | enlight22 | after loading linux and doing some stuff, it mounts a disk on chip over / and loads another linux, lol |
| 16:32.31 | enlight22 | and i really want to make a complete image of it, but idk what im doing over the console, with no eithernet, and no way to transfer files, lol |
| 16:33.38 | SpeedEvil | Find some source of ARM static binaries |
| 16:33.53 | enlight22 | yesterday, before i fixed the watchdog, i had mounted the disc on chip, but then the watchdog rebooted the device and it went into a boot loop, cause what i mounted overwrote something in ram i guess. i thought i was done, powering it off with the switch didnt fix it |
| 16:34.05 | enlight22 | but when i unplugged it and plugged it back in, everything was back to normal |
| 16:34.36 | SpeedEvil | I assume you don't have ssh? |
| 16:34.47 | SpeedEvil | Tar? |
| 16:34.51 | enlight22 | if i allow it to boot normally, and watch the log, it starts ssh |
| 16:35.15 | SpeedEvil | You may be able to mount the 'normal' image somewhere |
| 16:35.18 | enlight22 | but since i havent found the real file ssytem yet, i havent determined what the real passwords are, and teh method by witch ssh wont respond to anyone |
| 16:35.35 | enlight22 | tar? |
| 16:35.41 | SpeedEvil | tar is an archiver |
| 16:35.47 | enlight22 | 0h |
| 16:35.50 | enlight22 | i knew that |
| 16:35.54 | SpeedEvil | in some circumstances, you can use it to extract an image. |
| 16:35.55 | enlight22 | its got gzip on it |
| 16:36.11 | SpeedEvil | start a binary clean telnet, log it, tar to console |
| 16:36.27 | enlight22 | whoa |
| 16:36.27 | SpeedEvil | chop tar achive out of log |
| 16:36.36 | enlight22 | lol |
| 16:36.41 | enlight22 | you have blown my mind |
| 16:36.43 | SpeedEvil | AFK anyway - good luck! |
| 16:36.44 | enlight22 | im a bit confused |
| 16:37.00 | enlight22 | you are saying, have it tar the entire thing, but dump the output to stdout? |
| 16:37.03 | SpeedEvil | yes |
| 16:37.14 | enlight22 | and then use my terminal software to log that |
| 16:37.29 | SpeedEvil | really AFK now |
| 16:37.37 | enlight22 | thank you for that insight |
| 16:37.40 | enlight22 | what a grand idea |
| 16:41.55 | *** join/#edev wing0 (~heero@187.39.186.42) |
| 16:42.08 | enlight22 | hello wing0 |
| 16:43.50 | wing0 | enlight22: hello! sup? |
| 16:44.11 | enlight22 | working on this scs-uc26 femtocell |
| 16:44.21 | enlight22 | in all my incompetence, trying not to brick it, lol |
| 16:44.34 | wing0 | enlight22: have a picture? |
| 16:44.41 | enlight22 | thus i have located #edev which has been most helpful |
| 16:44.49 | enlight22 | i have pictures of the board front and back |
| 16:45.09 | enlight22 | http://zodonoalt.net/scs-front.jpg and http://zodonoalt.net/scs-back.jpg |
| 16:45.31 | enlight22 | its a femtocell network extender running montavista linux on an OMAP1710 |
| 16:45.35 | enlight22 | i have already made some progress |
| 16:45.41 | wing0 | enlight22: never worked with one before |
| 16:45.57 | enlight22 | yes, i sort of feel im in uncharted terratory here |
| 16:46.02 | enlight22 | there isnt much on the internet |
| 16:46.29 | enlight22 | i found the console with mah scope and bus pirate |
| 16:46.56 | enlight22 | managed to get root access after discovering what they changed in u-boot to prevent interruption of the boot process |
| 16:47.07 | enlight22 | root access with the help of sjhill |
| 16:47.27 | enlight22 | and today i figured how to start the watchdog process so it would quit rebooting |
| 16:48.18 | wing0 | enlight22: are you just hacking or do you want do build something with it? |
| 16:48.59 | enlight22 | well, what i want to do, is this one is a sprint one, and i have verizon service, so first i want to change it to connect to verizons servers |
| 16:49.24 | enlight22 | then i want to connect it to my vpn so it has a US ip address, and then im going to spoof GPS so it will work at my present location |
| 16:49.47 | enlight22 | thus enabling me to make phone calls on verizon cellphone from where i am now (china) |
| 16:50.45 | wing0 | enlight22: very useful |
| 16:51.16 | enlight22 | but first i want to back up the entire file system, speedevil has just blown my mind my suggesting that i can pipe tar to STDOUT and log with my terminal, |
| 16:51.35 | wing0 | enlight22: but it's a lot of work. How are you going to connect to verizon service? is there an userland client for linux? |
| 16:51.37 | enlight22 | im not sure how to do that, but i understand the concept |
| 16:52.14 | enlight22 | there is a web interface running on httpd on the device, but they have it set up so that they can only connect to it from their end, over the ipsec vpn it sets up |
| 16:52.23 | enlight22 | (im gonna fix that, after i manage to back up the device |
| 16:52.37 | enlight22 | and i already know the addresses of the relavent servers at verizon |
| 16:53.02 | enlight22 | they sell a similar device, its a later revision of the same board, also made by samsung, and running the same software |
| 16:53.47 | wing0 | enlight22: it should not be hard, than |
| 16:53.56 | enlight22 | my current problem, is after it loads initial linux, it seems to mount a disc on chip, and overwrite the initial RFS with another RFS and continue from there |
| 16:54.45 | enlight22 | i already thought i bricked it once, by mounting the disc on chip using the initscript in the initial root file system, but then the watchdog restarted the board, and it went into a boot loop, powering off and on didnt fix it |
| 16:54.50 | enlight22 | i thought i was hosed |
| 16:55.00 | enlight22 | but then i unplugged it, and alas, that fixed it |
| 16:55.20 | enlight22 | it seems the power switch, while appearing to be a physical power switch rather than a soft off, still leaves the ram powered |
| 16:56.10 | enlight22 | i have since learned how to fix the watchdog to prevent any unexpected reboots, lol |
| 16:56.36 | enlight22 | but i am desperately wanting to image the device somehow, in case i have to break out the jtag later |
| 16:59.00 | wing0 | enlight22: i would look for a serial that accept pipes, and log the serial to a binary archive, but i never did it before |
| 16:59.31 | enlight22 | that is what he suggested |
| 16:59.53 | enlight22 | i can just cat /dev/ttyUSB0 > somefile |
| 17:00.07 | enlight22 | but i need a tar command i guess that will backup everything |
| 17:00.27 | enlight22 | and as i may have said, i only switched to linux desktop 1.5 years ago, im not the greatest at this yet, lol |
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| 17:04.21 | enlight22 | any thoughts |
| 17:08.15 | wing0 | enlight22: the tar command is used to create a single file from all your files, and you can add compression to it. but in our case, we need to make it recursive through the entire tree, i'm looking for an option to that. the second problem on that is that i don't think you can output directly from tar |
| 17:08.44 | enlight22 | tar -O supposedly outputs to stdout |
| 17:10.24 | wing0 | than, its that: "tar cvzfO /* > /dev/*your serial interface*" |
| 17:11.00 | enlight22 | other problem is minicom freaks out if i cat a binary file |
| 17:11.29 | enlight22 | oh, rather than letting tar dump it to the screen, u think i should pipe it directly to the devices serial port? |
| 17:12.57 | enlight22 | and then on the pc end cat /dev/ttyUSB0 |
| 17:13.08 | enlight22 | <PROTECTED> |
| 17:13.18 | wing0 | enlight22: that's my guess |
| 17:13.28 | wing0 | wing0: you can try a named pipe, to |
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| 17:14.04 | enlight22 | on the subject end do i need to --exclude /proc /dev /sys etc? |
| 17:14.57 | wing0 | enlight22: the device uses udev? i don't think excluding /dev would be a good idea if you are not |
| 17:14.57 | enlight22 | and should i maintain permissions with -p? |
| 17:15.19 | wing0 | enlight22: yes, you should |
| 17:15.44 | enlight22 | i believe it uses udev, but if i let it backup /dev wont i get the contents of my serial session, and endless data from the gps uart, etc |
| 17:16.06 | enlight22 | or will i just get the place holer names for the devices in question |
| 17:16.39 | wing0 | enlight22: i don't know how to answer that |
| 17:16.50 | enlight22 | is it because my question is bad? |
| 17:17.07 | wing0 | enlight22: no, i'm not that experienced, just that |
| 17:17.37 | enlight22 | well, i doubt trying this could mess the device up |
| 17:18.01 | wing0 | enlight22: do you have local storage on the device? |
| 17:18.19 | enlight22 | it has ram, and an mdoc disc on chip |
| 17:18.38 | enlight22 | and i have read write access, which is what scares me, lol |
| 17:19.19 | wing0 | enlight22: lol. how much ram do you have? and whats the total size of the filesystem? |
| 17:19.47 | enlight22 | well, as i havent mounted the main filesystem, it seems like this one is 4mb |
| 17:20.02 | enlight22 | im afraid to mount it again because of what i said earlier |
| 17:20.09 | wing0 | enlight22: i see |
| 17:20.10 | enlight22 | i wanna back up the inital root file system first |
| 17:20.23 | SpeedEvil | mount -o ro should always be safe |
| 17:20.24 | SpeedEvil | I think |
| 17:20.27 | enlight22 | then ill mount the other RFS and back that up |
| 17:20.35 | SpeedEvil | ro = read only |
| 17:20.49 | enlight22 | the problem is when you mount it, it overwrites the initial RFS it seems like |
| 17:20.58 | enlight22 | and the rfs im in now is rw |
| 17:20.59 | enlight22 | lol |
| 17:21.23 | enlight22 | the system seems to operate from a ram drive |
| 17:21.41 | enlight22 | and when you mount the disc on chip alternate RFS it over writes the inital ram disk rfs for use |
| 17:22.06 | enlight22 | (i think the inital rfs is also loaded from a different partition on the disc on chip |
| 17:22.52 | enlight22 | probablem is info for this proc isnt available, so i cant easily dump it with my jtag |
| 17:23.14 | enlight22 | but if i can manage to not fubar u-boot i can always reload it from tftp if i have a backup of it |
| 17:28.10 | wing0 | try something like that, for the backup: first, create a named pipe with mkfifo mypipe |
| 17:28.55 | enlight22 | um... lol |
| 17:29.16 | enlight22 | named pipe? |
| 17:29.41 | enlight22 | i tried echo "test" > /dev/ttyS0 on the device, and it did send test on the serial console port |
| 17:29.52 | wing0 | than, compress the files you want to backup from filesystem with tar -cvfO /* > mypipe |
| 17:30.05 | wing0 | and take your terminal to read from the pipe |
| 17:30.35 | enlight22 | afik my terminal can only read what comes out the serial port |
| 17:31.27 | wing0 | enlight22: are you writing directly to the char device? |
| 17:32.28 | enlight22 | i have my computer hooked up to this board with a ttl converter, which appears to my computer as a serial port. the device has its console mapped to ttyS0 |
| 17:33.24 | enlight22 | on the device i tried echo "test" > /dev/ttyS0 and got test back, so im guessing whatever i pipe to /dev/ttyS0 will fly across the serial connection to my pc, where i can then dump that into a file |
| 17:33.48 | enlight22 | as far as char device, i have no clue what you are talking about, lol |
| 17:34.45 | enlight22 | i better try it with a single small file first, to make sure i dont just fill up the ram with something, and overflow it etc |
| 17:54.20 | wing0 | enlight22: In your pc, do a mkfifo mypipe, and then cat mypipe > foo.tar. Than, output the minicom to mypipe (i don't know exactly how to do that). Than, tar -cvf - / > /dev/ttyS0 on the device side. |
| 17:56.06 | wing0 | enlight22: should work |
| 17:56.45 | enlight22 | what is the difference between doing that, and catting /dev/ttyUSB0 directly to foo.tar |
| 17:57.24 | enlight22 | im gonna take minicom out of the loop by just doing echo "tar -cpz /" > /dev/ttyUSB0 |
| 17:59.03 | enlight22 | i already tried it but tar is putting a bunch of verbose junk in the resultant file, and there is some trailing garbage according to archive manager that keeps it from decompressing, lol |
| 17:59.58 | a7r | hey |
| 18:00.18 | wing0 | enlight22: o, sry, i forgot to remove the -v option |
| 18:00.45 | wing0 | a7r: hi |
| 18:00.45 | enlight22 | already tried with -v removed and its stil putting some crap in there |
| 18:01.00 | enlight22 | like tar: Removing leading `/' from member names |
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| 21:01.25 | enlight22 | my brain hurts |
| 21:01.33 | enlight22 | i cant seem to get the ethernet to work |
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| 22:26.46 | _ohm | Basic question I guess, I'm trying to cross compile software for a linux tablet and I've mounted the rootfs to /mnt. Do I set my --prefix=/mnt in order to install everything to the tablet? |
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