Author Topic: Calling all Linux Kernel developers!  (Read 348181 times)

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Offline Hayleia

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Re: Calling all Linux Kernel developers!
« Reply #330 on: November 21, 2012, 01:12:34 am »
(
This is a bit offtopic but that concerns this topic so I post it here.
Why did almost everyone get +1s ? *.*
)
I own: 83+ ; 84+SE ; 76.fr ; CX CAS ; Prizm ; 84+CSE
Sorry if I answer with something that seems unrelated, English is not my primary language and I might not have understood well. Sorry if I make English mistakes too.

click here to know where you got your last +1s

Offline Vsod99

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Re: Calling all Linux Kernel developers!
« Reply #331 on: November 21, 2012, 01:17:12 am »
How's the clickpad development going tangrs?

Offline InspiredByCas

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Re: Calling all Linux Kernel developers!
« Reply #332 on: November 21, 2012, 06:36:16 am »
external power support would be really helpful, so i'm betting people will be interested if you can get it working =)
Yeah. I opened a mini USB b plug and shortened the ground (5. pin) with with sense (4. pin) by putting some solder on the back of the contacts. then I used a file to remove a bit of the solder which was too much and would have blocked the metal case of the plug.
If I connect this cable to my CAS and start linux, it gives 5 volts output at the other end of the cable, so that proves the calculator recognizes the short between ground and sense and acts like a USB host.
I found a picture which describes that:
top part is normal usb cable, lower part is OTG cable with pin 4 and 5 shortened.


Now I will cut the cable and add the external power supply. It will a 9 volt battery (or accu) which is connected to a L7805 (a thing with 3 pins and a heatsink connection on the back, can be found in some devices, I found one in a automtic call responser (<= I think there is a better word for that ;)), that will make exactely 5.00 volts independent of input voltage. This power will go into the output of my power supply, but it should not go out to the input, that would destroy my CAS I think.
With a switch, a 'low batt' warnig LED or something like that, it is ideal to use it everywhere and cheat everywhere :D
The output can be connected to any regular USB Hub and I think with a full battery it can supply power to very 'hungry' devices :) The only problem with much devices would be that the L7805 can become very very hot (much more than 100°C)...

I will inform you about my progress...
« Last Edit: November 21, 2012, 06:38:25 am by InspiredByCas »

Offline Vogtinator

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Re: Calling all Linux Kernel developers!
« Reply #333 on: November 21, 2012, 10:07:01 am »
Wow, I just checked the comments on my video, and I saw THAT:
http://www.youtube.com/watch?v=K8P7lxQ9bcw
Some a**hole motherf****r stole my video, I already reported it!
« Last Edit: November 21, 2012, 11:03:04 am by Vogtinator »

Offline Rhombicuboctahedron

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Re: Calling all Linux Kernel developers!
« Reply #334 on: November 21, 2012, 11:54:31 am »
Oh yeah, I saw that yesterday and I was just about to post about it.
I checked one or two of his other videos, and in the suggested section, there were also identical videos, so he must steal all the videos.

Offline Eeems

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Re: Calling all Linux Kernel developers!
« Reply #335 on: November 21, 2012, 12:11:42 pm »
People do that all the time on youtube to steal views... It's really annoying. You could probably do a copyright takedown of it or something.
/e

Offline InspiredByCas

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Re: Calling all Linux Kernel developers!
« Reply #336 on: November 21, 2012, 02:39:46 pm »
Haha, if you short any wires on on the connected CAS with OTG cable it displays a weird message that I should reconnect the device... :w00t:

Yes, i know if I do this too often, it will brick my calc...
« Last Edit: November 21, 2012, 02:43:56 pm by InspiredByCas »

Offline Vogtinator

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Re: Calling all Linux Kernel developers!
« Reply #337 on: November 21, 2012, 04:06:26 pm »
Is it already possible to use GPIOs?

Edit:
http://www.youtube.com/watch?v=K8P7lxQ9bcw Yeah, got removed!
« Last Edit: November 21, 2012, 04:15:38 pm by Vogtinator »

Offline Nosferatu Arucard 1983

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Re: Calling all Linux Kernel developers!
« Reply #338 on: November 21, 2012, 08:32:05 pm »
And a Neo Geo emulator on Nspire ? I think the gngeo is the best possible solution, since it only requires SDL and on any Linux distro with framebuffer video driver is a possible solution.
Playing Metal Slug on a calculator would be awesome!

Offline InspiredByCas

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Re: Calling all Linux Kernel developers!
« Reply #339 on: November 22, 2012, 07:16:46 am »
I changed my plan a bit and decided to make two USB A connectors: At one the input from my self-made OTG cable comes in (so I don't have to cut my cable) and on the other the data and 5 volt comes out (going to a USB hub for example). This is because I didn't want to buy parts which I need (I hate waiting for deliveries), so I want to use parts I found in some old devices. And I just found a double USB A connector on a old mainboard... You can desolder them with a hot air pistol (min. 550°C). :devil: Watch out for dangerous gases when some parts (eg. plastics) melt and the mainboard makes bubbles...
These gases make a good headache. XD

And I think a transistor will do the on/off switching thing, just a LED will display state...
« Last Edit: November 22, 2012, 07:19:53 am by InspiredByCas »

Offline Stennwellara

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Re: Calling all Linux Kernel developers!
« Reply #340 on: November 22, 2012, 04:06:20 pm »
So, I really like linux on ti-nspire, but I want to improve the kernel a little bit, with new commands, inbuild apps and something. But I don't know how  ??? . O can not get the zimage file extracted  :banghead: . So i thought its identic with the files uploaded to Github , but these files have a size of 125mb.

It would be nice if someone could gelp me or if someone could upload the extracted zimage file.

Greetings and waiting for response Stennwellara.

Edit: I usually use Windows(7), but if it not works with windows I could use Ubuntu to.
« Last Edit: November 23, 2012, 09:30:23 am by Stennwellara »

Offline InspiredByCas

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Re: Calling all Linux Kernel developers!
« Reply #341 on: November 23, 2012, 07:27:59 am »
So, I really like linux on ti-nspire, but I want to improve the kernel a little bit, with new commands, inbuild apps and something. But I don't know how  ??? . O can not get the zimage file extracted  :banghead: . So i thought its identic with the files uploaded to Github , but these files have a size of 125mb.

It would be nice if someone could gelp me or if someone could upload the extracted zimage file.

Greetings and waiting for response Stennwellara.

Maybe this helps: http://www.linuxquestions.org/questions/programming-9/how-to-obtain-image-from-zimage-824499/
First link googleing 'decompress zimage'.

But I think, it would be better to compile the kernel new from source. Use buildroot for that, somewhere in the output folder there is a cross-compiler or so... I dodn't understand that, too.
« Last Edit: November 23, 2012, 07:30:20 am by InspiredByCas »

Offline aeTIos

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Re: Calling all Linux Kernel developers!
« Reply #342 on: November 23, 2012, 07:35:41 am »
WHO is giving all those random +1s? Is it OK if I undo them?
I'm not a nerd but I pretend:

Offline Levak

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Re: Calling all Linux Kernel developers!
« Reply #343 on: November 23, 2012, 07:44:23 am »
Hi,
I'm sorry to popup like this without having the kind to read the 20 pages, but is there somewhere any information on how to
 * setup a cross compiler in order to compile files and run them on the calculator ?
 * send files or use binaries without usb adaptator (like mounting the nspire file system or something else like having an already setup kernel) ?

« Last Edit: November 23, 2012, 07:45:13 am by Levak »
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Offline Lionel Debroux

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Re: Calling all Linux Kernel developers!
« Reply #344 on: November 23, 2012, 07:59:36 am »
* as mentioned two posts above yours, a suitable cross-compiler is built by buildroot ;)
* launching Linux+userspace with an initrd/initramfs, without an external USB Mass Storage Device, is a matter of using the launcher;
* no way to mount the Nspire's filesystem, as it seems that there's no FLOSS driver for FlashFX + Datalight Reliance.
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