|
| ||
| Views: 4,221,428 | Main | Rules/FAQ | Memberlist | Active users | Last posts | Calendar | Stats | Online users | Search | 11-13-26 08:01 AM |
| Guest: | ||
| 0 users reading Touch Screen? | 1 bot |
| Main - Reverse-engineering - Touch Screen? | Hide post layouts | New reply |
| gudenau |
| ||
|
Member Normal user Level: 14 
Posts: 28/34 EXP: 12733 Next: 338 Since: 07-29-15 From: /dev/random Last post: 3832 days ago Last view: 3778 days ago |
Anyone have info on how the 3DS gets its input from the touch screen? |
| profi200 |
| ||
|
Member Who knows? Level: 20 Posts: 62/70 EXP: 37925 Next: 4514 Since: 05-21-15 From: Germany Last post: 3714 days ago Last view: 3582 days ago |
*cough* libnds *cough* |
| gudenau |
| ||
|
Member Normal user Level: 14
Posts: 29/34 EXP: 12733 Next: 338 Since: 07-29-15 From: /dev/random Last post: 3832 days ago Last view: 3778 days ago |
Posted by profi200 Is the hardware really the same though? I know it changed from DS to DSi and I don't want to use compatibility modes. |
| nocash |
| ||
|
Normal user Level: 21 Posts: 32/77 EXP: 43014 Next: 6929 Since: 10-09-15 Last post: 2819 days ago Last view: 2735 days ago |
libnds should contain code for both DS and DSi modes (that code will require "low level" access to SPI bus).
don't know if 3DS comes up with a different mode, just try the DSi code. If it works, then DSi and 3DS are apparently accessing it the same way. calibration data could be read in DS fashion (from wifi flash), but there should be also a 3DS specific config file containing the same calibration values (probably also stored somewhere in RAM). |
| profi200 |
| ||
|
Member Who knows? Level: 20 Posts: 63/70 EXP: 37925 Next: 4514 Since: 05-21-15 From: Germany Last post: 3714 days ago Last view: 3582 days ago |
xerpi is reverse engineering sysmodules right now to find out how to do it. Unfortunately the DSi touchscreen read code in libnds does not correctly work. I thought because it is backwards compatible that could work but it is different in 3DS mode. |
| xerpi |
| ||
|
Newcomer Normal user Level: 6 Posts: 3/4 EXP: 529 Next: 378 Since: 11-11-14 Last post: 3878 days ago Last view: 3878 days ago |
Here's all the RE I've done to the GPIO module: http://pastie.org/private/b17vatmthopnxufqb5trw
I'm still trying to figure out how the GPIO registers work. |
| Dazzozo |
| ||
|
Member Dev of "the best software that almost nobody will ever use" Level: 9 
Posts: 13/13 EXP: 3035 Next: 127 Since: 05-21-15 Last post: 3882 days ago Last view: 3715 days ago |
see http://3dbrew.org/w/index.php?title=Codec_Services&curid=2071&diff=16241&oldid=13745
These use SPI device 3, I think the legacy (TWL) device was 2. |
| gudenau |
| ||
|
Member Normal user Level: 14
Posts: 30/34 EXP: 12733 Next: 338 Since: 07-29-15 From: /dev/random Last post: 3832 days ago Last view: 3778 days ago |
Oh, so mr Linux was working on it. Cool.
Guess I'll just do other things... |
| xerpi |
| ||
|
Newcomer Normal user Level: 6 Posts: 4/4 EXP: 529 Next: 378 Since: 11-11-14 Last post: 3878 days ago Last view: 3878 days ago |
Yesterday I finally got the touchscreen working on Linux after porting the RE'd code from the codec and SPI services. I'll post the pseudo-code to get the touchscreen initialized and read from it soon. |
| gudenau |
| ||
|
Member Normal user Level: 14
Posts: 31/34 EXP: 12733 Next: 338 Since: 07-29-15 From: /dev/random Last post: 3832 days ago Last view: 3778 days ago |
Posted by xerpi Nice, got ARM9 <-> ARM11 yet? |
| Main - Reverse-engineering - Touch Screen? | Hide post layouts | New reply |
|
Page rendered in 0.009 seconds. (2048KB of memory used) MySQL - queries: 26, rows: 81/81, time: 0.006 seconds. ![[powered by Acmlm]](img/poweredbyacmlm.png "powering nostalgia")
Acmlmboard 2.064 (2018-07-20)© 2005-2008 Acmlm, Xkeeper, blackhole89 et al. |