Nishanth' tech rambles

Lol, spend a big chunk of a day looking for a Linux based cell in India.. ended up with an Intel Xscale based Motorola A1200... runs a mv 2.4 kernel.. the kernel is posted here: https://opensource.motorola.com/sf/frs/do/viewSummary/projects.a1200/frs The fun part - i tried joining the sourceforge like project, heh heh, no thanks came the reply :) Quote " Your request to join the project, A1200 has been denied. Comment from admin: Hello, This project is only for the distribution of our open source software. Project membership does not grant you any privileges beyond what you get simply by being logged into the site (e.g. discussions forums and downloads). Keep watching this site for other projects that are open to community participation. ". I am heart broken.. not even a list to discuss the kernel and hack it up :( - blame it on me being lazy. interesting to read this set of cries: https://opensource.motorola.com/sf/discussion/do/listPosts/projects.a1200/discussion.general_co...

New wakeup :) pretty decent this time :)

I got an email from my employer today: National Skills Registry (NSR) – https://nationalskillsregistry.com/ An initiative by NASSCOM National Skills Registry (NSR) – An IT & ITeS industry initiative taken-up by NASSCOM India has emerged as the global hub for IT and ITeS industry and is providing services to customers ranging from corporates, public bodies and even foreign governments. India can remain attractive to such customers only so long as we are able to keep up our service delivery to their satisfaction and demonstrate that we are following best practices in recruitment, information security, etc. NASSCOM has established a database (called National Skills Registry or NSR) of IT professionals. NSR will register details of IT professionals and will carry out the verification of the information. This will ensure that Indian IT sector employees will be registered on a central database, have a unique identity number and background checked. This will instill confidence about the ...

If this: http://arstechnica.com/news.ars/post/20060605-6987.html is true.. then lol....

Something I spend 2 days re-learning from my MCA days!! Man am i forgetfull.. dont even know if my understanding is correct now.. Generating the Hamming code parity bits First thing to understand about Hamming code is the following Step1: Convert data into bits D0, D1, D2…. Dn-1, Dn where n is divisable by 2 E.g.: N=8 1 0 0 1 0 1 0 0 Step2: Next thing is called grouping. Group Bits in sequence of powers of 2 – call them group index [D0] [D1]…. [Dn] is grouped on power of 0 è[G0_0],[G0_1]…[G0_n] [D0,D1] [D2, D3].. [Dn-1, Dn] is grouped on Power of 1 è[G1_0],[G1_1]…[G1_n] [D0,D1, D2, D3].. [Dn-3, Dn-2,Dn-1, Dn] is grouped on Power of 2 è[G2_0],[G2_1]…[G2_n] Max such groups possible is possible is n/2 è [D0,.., Dn/2], [Dn/2+1,.., Dn] è[Gn/2_1][Gn/2_2] E.g: Groups= Group index 0: [1], [0], [0], [1], [0], [1], [0], [0] Group index 1: [1, 0], [0, 1], [0, 1], [0, 0] Group index 2: [1, 0, 0, 1], [0, 1, 0, 0] Step 3: Each Group has parity generated for all the data bits of each [Gx_y] using XOR...

am sleepy waiting for a t-con to happen that never seems to get finalized.. so here it goes.. From what i learnt (relearnt?) in the past couple of months: Why have my modules created least issues? 1. Be clear on what u need to do - fight with requirements teams if required. I love our requirement guys - they are good! 2. Estimate within reason - dont over budget/underbudget. But *spend time* on estimates - always be prepared for unexpected hardware/tools issues-estimate for it!! - I use a 3 point estimate as of now, till i get something better at least. 3. read a lot on the subject - TRMs, functional specs, similar implementation, irc logs, mailing list archives, other OS, validation code, what ever I can lay my hands on - the idea is know how the hardware works - thoroughly before touching s/w. 4. As a driver writer I need to know my users, so i talk to them.. in person, over emails, the final user is the best teacher.. (next to the requirements blokes). meetings.. over all architectu...

http://linux.omap.com/pub/kernel/2430sdp/source/ contains the source now.. :) the 2.6.10 code contains the new audio architecture. it works on SDP2430 and H4 (2420) too.. I guess I need to spend a bit of time to put it together for h3,h2,osk before pushing for it... :( and ofcourse.. lotsa fight coming up for the new dma apis for chaining...

to get hwdep running. SND_HWDEP does not get enabled in the kernel.. the reason is sound/core/Kconfig does not have a string with the tristate option. for a hack, i put in "hw dep" that explains why the following happend when i tried to compile btsco Building modules, stage 2. MODPOST *** Warning: "snd_hwdep_new" [/root/kernel-build/btsco-0.41/kernel/snd-bt-sco.ko] undefined! CC /root/kernel-build/btsco-0.41/kernel/snd-bt-sco.mod.o LD [M] /root/kernel-build/btsco-0.41/kernel/snd-bt-sco.ko most of my drivers are modules.. dunnot if it makes sense to load them up as staticly linked drivers???? just musing..i kind of get edgy thinking of installing the kernel again (i lost track of the number of re-compiles i have done so far :D).. restarting again....

Ref: http://www.teaparty.net/technotes/blue-gprs.html I have a Dell Wireless 350 Bluetooth Module Marvin:~/kernel-build/linux-2.6.15-rc6# lsusb Bus 005 Device 001: ID 0000:0000 Bus 004 Device 001: ID 0000:0000 Bus 003 Device 001: ID 0000:0000 Bus 002 Device 004: ID 413c:8103 Dell Computer Corp. Bus 002 Device 001: ID 0000:0000 Bus 001 Device 001: ID 0000:0000 bluez-utils: added: deb http://bluez.sourceforge.net/download/debian/ ./ deb-src http://bluez.sourceforge.net/download/debian/ ./ to /etc/apt/source.list, apt-get update apt-get install bluez-utils #hciconfig hci0: Type: USB BD Address: 00:10:C6:7E:4E:80 ACL MTU: 384:8 SCO MTU: 64:8 UP RUNNING PSCAN ISCAN RX bytes:522 acl:0 sco:0 events:41 errors:0 TX bytes:1156 acl:0 sco:0 commands:35 errors:0 i put my logitech into scan mode (flashing red and blue after arnd 7 sec of pressing the switch), and then ran hcitool scan Got: 00:0D:44:01:4B:6E Logitech HS01 now to figure out how to plug into this.. check this out: http://sourceforge.ne...

http://www.exploits.org/v4l/ i had to recompile the kernel (sigh again) with v4l enabled. Then i compiled spcaview-20051212( http://mxhaard.free.fr/download.html ) since i had a creative webcam live once that was done a reboot later, i ran camorama and xawtv. both worked like a charm... geee.. this is good.. now i got a couple of issues. gnomemeeting does not seem to be able to open /dev/sound/dsp since kde is already controlling it.. mebbe try to get my bluetooth working??

mouse problem: evdev was compiled as a module(CONFIG_INPUT_EVDEV=m in my .config) . add: InputDevice "ALPS Touchpad" #InputDevice "Configured Mouse" in ServerLayout and now either make "CONFIG_INPUT_EVDEV=y" and recompile kernel OR modprobe evdev needs to run before kdm ran, and for this i hacked the /etc/rc5.d/S99kdm and added (lsmodgrep evdev)(modprobe evdev) This works... http://rtr.ca/dell_i9300/ has more details on kubuntu setup. the class is this: To get the Front-Panel media buttons working, it is necessary to map them to the standard XF86-Audio button symbols on X11 startup. A script to do that is here. To have it run automatically in KDE, place it (or a symlink to it) into your ~/.kde/Autostart/ directory. The volume up, down, and mute buttons are handled internally by kmilo (which you might need to install: apt-get install kmilo). To have xmms use the play, pause, prev, next, and stop buttons, I had to download and install the appropriate packag...

Bloddy well miss semagic!! One more of the Inspiron 9300 installation stories.. installed windows xp home edition first. then started with debian.. IMPORTANT: http://fluffi.info/inspiron9300/single/ gives a lot of info.. i'd try and fill the missing links.. I got the sarge dvds (both of them ) and installed a basic install - I just got a shell prompt with *no* audio/video/anyotherthing.. here is the saga so far: hmm.. anyways.. I have my debian useable level at least.. some interesting things: apt-get commands and learnings: http://homepage.mac.com/sao1/fink/commands.html I got the nvidia drivers, the ipw2200 drivers , interestingly these are valid for 2.6 kernel and above. Debian's Sarge installation is with 2.4.27 kernel!! this is painful. so the thing i did was to download 2.6.15-rc6, applied a patch to it, here is how to compile the kernel and create a .deb package - pretty nice to do a dpkg -i and apt-get remove package_name and play around.. libata patch: http://www.kern...