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Messages - tonzaysi7

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TI-Nspire / Re: Calling all Linux Kernel developers!
« on: February 29, 2016, 03:05:56 pm »

I managed to get linux booting with root filesystem on a USB drive with this kernel command line:

Code: [Select]
cmdline root=/dev/sda rw rootwait
But I can't get the keypad working and I don't know what's wrong with it as the driver should be loaded.
If someone knows about this problem, please help.

Edit: My calc model: Nspire CX CAS

TI-Nspire / Re: nspire Linux Questions
« on: September 29, 2014, 04:29:05 pm »
Can you link me a kernel which has a working usb rootfs support and is compatible with linuxloader2 (new devicetree, dtb file)?
I just can't get it use the usb as rootfs

General Calculator Help / Re: New CX CAS OS......Worth upgrading?
« on: September 26, 2014, 11:23:48 am »
Hello guys again! I have again tried to downgrade the boot. I'm so close to the solution but it still fails while trying to send the image through ttl.  :banghead: Connecting the Rx and Tx is clear to me but the ground (GND), should I connect it to both GND pins in the calc or is 1 enough? Also when I'm trying to send the image, it just returns me random bytes with recognizable strings like "boot". Could you explain me the use of the ground cable and how should it exactly be connected? How about an example picture with all the connections made?  ???

Info about my calc:
Spoiler For Spoiler:
Exact name: TI-nspire CX CAS
Hardware revision: F (downgradeable)
Boot1 version:
Boot2 version:
OS version: (not currently installed but ofc written in boot2 to prevent downgrade)

EDIT: Now after numerous tries when i click send the file, select boot2.img, xmodem and press send, it just says: "Not enough memory".... please help me!

For now I have tried more than 100 times, every time with different settings: many protocols (even straight binary), different bitrates and different boot images with different names and every time i have checked that the cables are well connected and there are no shortages but still no result...

It seems to be like a communication problem because most of the errors have been timeouts. If you know anything about the Rx and Tx lights in the TTL converter, please explain how should I understand their signification.

EDIT2: HELL YEAH I made it!  :w00t:  The problem was in the USB/TTL interface but I changed to arduino uno and soldered some pins and it worked perfect. My next question: How do I downgrade because even I have boot2 version 3.10.16, the computer link doesn't allow me to install os 3.1.0 or anything below the version i had. I even tried tnocing the current and then install it but straight after first boot the calc crashed and the os was automatically removed? ??? ???

Situation now:
Only installable OS: (not installed)
Boot2 version: 3.10.16

TI-Nspire / Re: gpSP-Nspire (GBA Emulator)
« on: February 26, 2014, 07:45:55 am »
Hello, I just read that there is now a kind of link cable emulation in gpSP so It is maybe possible to make it using the nspire to nspire cable (of course someone must make the code for that). If so, that would be a very nice opportunity.

General Calculator Help / Re: New CX CAS OS......Worth upgrading?
« on: February 05, 2014, 01:21:43 pm »
The same (progress stuck at 0%) happened to me with short-circuits (Tx and Rx or Rx and GND in contact).
Try to recheck...

This time the calc cancelled the transfer... timeout?

E: Are you able to give me a link for some good cables because mine are piece of shit...

General Calculator Help / Re: New CX CAS OS......Worth upgrading?
« on: February 05, 2014, 11:49:03 am »
@DJ Omnimaga: do you have a source about this ?

Unwanted contacts with adjacent pins happened to me many times.
And it never bricked the calculator.

Anyway, here's the complete process:

- remove any OS using the maintenance menu (hold Doc+Enter+EE while resetting)

- download a Boot2 3.1 image for the TI-Nspire CX:

- connect and secure the three Tx, Rx and GND wires to the Dock/J01 connector

- install and run a compatible terminal software (like the Hyperterminal private edition coming with Windows up to Vista)

- configure it with:
* the right COM port (check your device manager to know which one your adapter did default to)
* Baud rate = 115200
* Data = 8 bit
* Parity = none
* Stop = 1 bit
* Flow control = none

- trigger the calculator Boot2 update mode be resetting while holding Doc+Enter+2
(beware, they will be a timeout - just reset and try again if you're not fast enough)

- from the terminal send the previously downloaded file using the Xmodem protocol

- install one of the available Nlaunch packs

Hello critor, I'm trying to send the img file to the calculator but It just stuck at 0 kt/855 kt.
After a while it gives a message: "No response from system".
I have tried like 10 times but with no result. All three lights (Rx Tx and GND) are on in the USB TTL adapter so the problem isnt in the connections. I also have right configuration. Any good piece of advice will be helpful, thanks.

E: I first tried in Windows 7 but the software crashed so now I'm using Windows XP computer but still no result..

General Calculator Help / Re: Nspire Boot2 Broken!
« on: February 05, 2014, 10:52:17 am »
Hello, I'm almost done with the downgrading but I have one problem. I found a version of hyperterminal for windows 7 and I had configured everything right but when I'm trying to send the boot2.img file the program will just crash. I have all the cables connected right. How do I fix the Hyperterminal?

E: Tried even in Win XP, still not working..

Here I have some photos:

Spoiler For Spoiler:

and the hyperterminal after connected:

And sorry for my language there in some parts.

TI-Nspire / Re: In need of a complete guide for Boot2 Downgrade.
« on: February 05, 2014, 10:29:49 am »
I would need help with the cables between PC and the Calc. How do you connect it safely?

E: Now my only problem is with the file transfer..

General Calculator Help / Re: Please Help!
« on: January 16, 2014, 10:33:14 am »
This should be the hardware you need and how it looks like.

It costs about $10 on Ebay if you live in France or United States. If you live elsewhere, there is a 0.0001% chance that you have to re-mortgage your house in order to afford the USB/TTL adapter (or the shipping fees).

As for the guide, I think this is what you need .

Of course I have quit Nspire stuff since long ago so I am not very familiar with everything, so I wouldn't be able to help much more myself.

Okay, I ordered now the Arduino uno and the adapter for it ( and it was only like 11 euros total :D. I'm just thinking the part of attaching the wires to my nspire because the wires look like this:

I ordered:

General Calculator Help / Re: Please Help!
« on: January 15, 2014, 04:20:40 pm »
Hello, I would like to downgrade my Nspire CX CAS boot2 version because I accidentally updated it, before I knew that it is impossible to downgrade your OS if you have boot2 version of 3.24.7 I also heard about the TNOC tool just after I updated the boot2.

I would just like to have a more specific information about the downgrading progress,
What does the USB/TTL adapter look like? Where do I get one? I have tried to google about it but so far I have found no solutions.

Please help me out :)

Edit: My model number is P-0712F so its between A and I.

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