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Author Topic: Press-to-test LED  (Read 7339 times)

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Offline fb39ca4

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Press-to-test LED
« on: July 28, 2010, 10:36:16 am »
Apparently, now it is possible to control the LED for PTT on the non-cas Nspire units.

http://ti.bank.free.fr/index.php?mod=news&ac=commentaires&id=843

Does anyone know how exactly this is done, as in what is the memory address, and what value goes with what color?
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Offline critor

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Re: Press-to-test LED
« Reply #1 on: July 28, 2010, 10:54:40 am »
Quote from: fb39ca4 on July 28, 2010, 10:36:16 am
Apparently, now it is possible to control the LED for PTT on the non-cas Nspire units.

http://ti.bank.free.fr/index.php?mod=news&ac=commentaires&id=843


We don't know exactly "how" for the moment, but the PTT/LED status seems to be stored in the same memory  page than the downgrade protection and the diagnostic mode-flag.
It even worked on basic & CAS TouchPads! ;)

No surprise we managed to activate the LED while testing the beta versions of Nleash.


See hackspire -> http://hackspire.unsads.com/wiki/index.php/Memory_layout
« Last Edit: July 28, 2010, 10:56:43 am by critor »
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SirCmpwn

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Re: Press-to-test LED
« Reply #2 on: July 28, 2010, 10:58:19 am »
This would be pretty cool if we could fake the PTT LED at some point...
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Offline qazz42

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Re: Press-to-test LED
« Reply #3 on: July 28, 2010, 11:07:39 am »
Heh, I can use all my documents while the teacher thinks I am in press to test mode, that would be cool (not that I would cheat) It is just that I almost made my nspire unusable by putting it into press to test mode, which can only be exited by another nspire (which I didnt have) thank gawd TI made a patch just in case someone did that
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Offline jnesselr

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Re: Press-to-test LED
« Reply #4 on: July 28, 2010, 12:53:05 pm »
this is probably why ti doesn't like us messing with the calcs.
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Offline qazz42

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Re: Press-to-test LED
« Reply #5 on: July 28, 2010, 01:00:35 pm »
Feh, I dont need to cheat, dont worry, I do great in math
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Offline DJ Omnimaga

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Re: Press-to-test LED
« Reply #6 on: July 28, 2010, 02:47:09 pm »
This is interesting, that light could effectively be used as a guide, maybe, in some games and other programs.
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Offline apcalc

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Re: Press-to-test LED
« Reply #7 on: July 28, 2010, 02:52:46 pm »
This would be really nice to have control of.  Like, if you beat a level in a game, it could be green, if you lose, it would be red.  Also, it could be used to show what powerups you have in a game.  It would have many uses. :)
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Offline DJ Omnimaga

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Re: Press-to-test LED
« Reply #8 on: July 28, 2010, 02:54:20 pm »
That said, that news on TI-BANK got my hopes up for a short while at first, because the way it was worded, to me it sounded like Critor found a way to display colors on the LCD XD. Oh well, still nice.
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Offline qazz42

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Re: Press-to-test LED
« Reply #9 on: July 28, 2010, 03:41:32 pm »
I agree, if there was a item near, LED starts flashing
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Offline bwang

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Re: Press-to-test LED
« Reply #10 on: July 28, 2010, 04:56:31 pm »
I can use my Nspire as a flashlight now! :)
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Offline fb39ca4

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Re: Press-to-test LED
« Reply #11 on: July 28, 2010, 05:03:16 pm »
It would be awesome if we could turn on multiple colors at once: red+green=yellow
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