Kickstarter: Open Source Graphics Processor (GPU)

2013-10-09 Thread Raphael Wimmer

Sounds interesting (in the long term):

Complete Verilog implementation of a 2D/ 3D graphics processor capable of  
OpenGL and D3D w/ full test suite

http://www.kickstarter.com/projects/725991125/open-source-graphics-processor-gpu

Should work with both Altera and Xilinx FPGAs
Goals: $200k for 2D, $400k for 3D, ...

It currently has only a PCI interface, however.

Raphael

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Re: The open hardware phone project that's had the most interest

2013-10-05 Thread Raphael Wimmer
On Sat, 05 Oct 2013 17:04:24 +0200, Pascal Gosselin  
pas...@aeroteknic.com wrote:


[...]
If technically feasible, this project I believe stands the best chance  
of obtaining funding as the concept has wide appeal.


Interesting long-term vision: maybe.
Short-term replacement for GTA04: no.

I posted this on the OpenPhoenux list recently:

There are numerous threads on Reddit that explain very well why this is  
not feasible [1,2,many]

The (imho) most important ones in short:
* Mechanical modularity increases size and cost, makes it harder to create  
a beautiful phone, and is not in the manufacturer's commercial interests.  
Therefore, it would be hard to find companies/customers to build/buy this.
* Many current components are highly integrated - SoCs, sensor ICs,  
Display/Touchscreen, etc. Making these modular would require development  
of many new components (and would increase size, cost, power consumption).
* The concept assumes that all components use a common communication  
backplane. This is not feasible, as a variety of voltages and  
communication protocols are in use in a typical phone (I2C, SPI, UART,  
USB, various display protocols, etc.). Many components need very short  
connections to the CPU/GPU/whatever without crossing other PCB traces. It  
is not realistic to make this work with a generic communication backplane.  
Proper heat dissipation for CPU/GPU is another problem.


In summary, while it is certainly feasible to build a modular phone (look  
at David Mellis' DIY cellphone [3]), doing so for current hardware would  
involve major engineering effort (== design and manufacture dozens of new  
chips) and would result in less stable, more expensive, and less beautiful  
phones requiring more power.


Raphael

[1]  
http://www.reddit.com/r/gadgets/comments/1m6y1q/that_phonebloks_things_annoyed_me_so_here_are_17/
[2]  
http://www.reddit.com/r/explainlikeimfive/comments/1m4pmy/eli5_why_is_phonebloks_a_bad_idea/

[many] http://www.reddit.com/r/all/search?q=phonebloksrestrict_sr=on
[3] http://hlt.media.mit.edu/?p=2182



--

Dipl.-Medieninf. Raphael Wimmer
Wiss. Mitarbeiter / Research Assistant
Doktorand / PhD student

Ludwig-Maximilians-Universität München   E-Mail: raphael.wim...@ifi.lmu.de
LFE Medieninformatik Skype:  real_raphman
Amalienstr. 17 / Raum 206WWW: 
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Re: QtMoko v55 for Freerunner upgraded to wheezy

2013-05-13 Thread Raphael Wimmer

On Sun, 12 May 2013 17:36:35 +0200, Radek Polak pson...@seznam.cz wrote:

[...]

Hi,
is it configured properly? Make sure you have these values in
/etc/default/gpsd:

START_DAEMON=true
DEVICES=/dev/ttySAC1
GPSD_OPTIONS=-b


The config file is correct. I'll reinstall v55 from scratch to check if I  
did any other modifications that caused the problem.

I'll file an issue on Github once I get to do it.

Raphael


--

Dipl.-Medieninf. Raphael Wimmer
Wiss. Mitarbeiter / Research Assistant
Doktorand / PhD student

Ludwig-Maximilians-Universität München   E-Mail: raphael.wim...@ifi.lmu.de
LFE Medieninformatik Skype:  real_raphman
Amalienstr. 17 / Raum 206WWW: 
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Re: QtMoko v55 for Freerunner upgraded to wheezy

2013-05-12 Thread Raphael Wimmer

On Tue, 16 Apr 2013 14:35:47 +0200, Radek Polak pson...@seznam.cz wrote:


Hi,
i have now moved the experimental wheezy based qtmoko v55 to stable.


Just a heads-up for the next pure-wheezy version:
Upgrading gpsd from 2.95 (squeeze, and installed in v55) to 3.6 (wheezy)  
results in gpsd no longer recognizing the GPS chip.

Not sure if this is an error on my side but:
I have installed v55 from the linked source. While playing around with  
additional packages, I had to uninstall and reinstall gpsd.

At this point, apt chose the wheezy package for gpsd (3.6).
After the upgrade, QtPedometer, qtgps don't get any data. NeronGPS even  
hangs when initializing the GPS chip.

Downgrading back to gpsd 2.95 fixes the problem.

with gpsd 2.95 - the DEVICE line appears after starting NeronGPS


root@neo:~# netcat localhost 2947
{class:VERSION,release:2.95,rev:2011-12-06T19:20:53,proto_major:3,proto_minor:3}


{class:DEVICE,path:/dev/ttySAC1,activated:1368350470.77,driver:Generic  
NMEA,native:0,bps:9600,parity:N,stopbits:1,cycle:1.00}



and with gpsd 3.6:



root@neo:~# netcat localhost 2947
{class:VERSION,release:3.6,rev:3.6,proto_major:3,proto_minor:7}


[no DEVICE ever appears]

Btw: why does only NeronGPS show the number of visible satellites in the  
status bar?


Best,

Raphael

--

Dipl.-Medieninf. Raphael Wimmer
Wiss. Mitarbeiter / Research Assistant
Doktorand / PhD student

Ludwig-Maximilians-Universität München   E-Mail: raphael.wim...@ifi.lmu.de
LFE Medieninformatik Skype:  real_raphman
Amalienstr. 17 / Raum 206WWW: 
http://www.medien.ifi.lmu.de

80333 MünchenTel:+49 (89) 2180-4659
Germany  Fax:+49 (89) 2180-99-4659

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Re: [QtMoko] MokoFaen theme, update

2012-08-23 Thread Raphael Wimmer

Hi.

On Wed, 22 Aug 2012 16:45:32 +0200, francesco.dev...@mailoo.org wrote:


- In the home screen there are a lot of infos displayed, maybe they
   can be regrouped in a more efficient way, I'm thinking about
   something like conky [1] or conky-colors [2];


isn't conky only for X11?


- After a series of test, at least on my GTA02, the use of the
   lock-screen button in the home screen causes several freezes. So now
   I'm using the power button to put my GTA02 in suspend and I'm going
   to remove the lock-screen button from the homescreen.


I never experienced freezes and really like the lock button but could live  
without it.



I know that theming is not a critical task, for me it's just an
amusement, but your opinions and help could be really useful.


Thanks. Your work is greatly appreciated!
If I had one wish: would it be possible to optionally position the buttons  
on the right side? Im left-handed ;)


Raphael

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Live-Stream OHSW workshop (German)

2011-12-03 Thread Raphael Wimmer

Hi.

for German-speaking (or -understanding) folks on this list:

We have a live video stream of our Open-Hard/-Software-Workshop at  
http://www.ustream.tv/channel/oshw-workshop


Program at http://ohsw.de/agenda.html

Cheers,

Raphael

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Re: openmoko works as an usb keyboard now

2011-11-04 Thread Raphael Wimmer

This is great!

I have been waiting for such a gadget driver since I got my first Zaurus.
Is there already a mouse gadget?

Raphael


On Fri, 04 Nov 2011 16:07:27 +0100, Timo Juhani Lindfors  
timo.lindf...@iki.fi wrote:



Hi,

2.6.39 includes g_hid.ko that can be used to make the system appear as a
usb keyboard to some usb host. It seems this is a platform driver but no
platform in linux includes it.

http://lindi.iki.fi/lindi/git/linux-hid-gadget.git/

is a fork of g_hid that works as an out-of-tree module and not a
platform driver. I tested this with the unofficial
linux-image-2.6.39-gta02-gta02 2.6.39-1gta021 package from

http://lindi.iki.fi/lindi/openmoko/linux-2.6-gta02/

and it works! From /var/log/Xorg.0.log:

...
(II) config/udev: Adding input device Linux 2.6.39-gta02-gta02 with  
s3c2410_udc HID Gadget (/dev/input/event7)
(**) Linux 2.6.39-gta02-gta02 with s3c2410_udc HID Gadget: Applying  
InputClass evdev keyboard catchall
(**) Linux 2.6.39-gta02-gta02 with s3c2410_udc HID Gadget: always  
reports core events
(**) Linux 2.6.39-gta02-gta02 with s3c2410_udc HID Gadget: Device:  
/dev/input/event7

(II) Linux 2.6.39-gta02-gta02 with s3c2410_udc HID Gadget: Found keys
(II) Linux 2.6.39-gta02-gta02 with s3c2410_udc HID Gadget: Configuring  
as keyboard
(II) XINPUT: Adding extended input device Linux 2.6.39-gta02-gta02 with  
s3c2410_udc HID Gadget (type: KEYBOARD)

(**) Option xkb_rules evdev
(**) Option xkb_model pc105
(**) Option xkb_layout fi
...

-Timo

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--

Dipl.-Medieninf. Raphael Wimmer
Wiss. Mitarbeiter / Research Assistant
Doktorand / PhD student

Ludwig-Maximilians-Universität München   E-Mail: raphael.wim...@ifi.lmu.de
LFE Medieninformatik Skype:  real_raphman
Amalienstr. 17 / Raum 206WWW: 
http://www.medien.ifi.lmu.de

80333 MünchenTel:+49 (89) 2180-4659
Germany  Fax:+49 (89) 2180-99-4659

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Re: GSM Firmware Flashed, now UBIFS problem and Kernel Panic

2011-04-14 Thread Raphael Wimmer

Hi Thomas,


On Thu, 14 Apr 2011 11:05:38 +0200, Thomas Franck thomas.fra...@gmx.com  
wrote:

[...]

---88-
UBIFS error (pid 1): ubifs_read_node: bad node type (255 but expected 6)
UBIFS error (pid 1): ubifs_Read_node: bad node at LEB 0:0
Kernel panic - not syncing: VFS: Unable to mount fs on unknown-block(0,0)
---88-

[...]


Any ideas on this problem? I there any way to repair that FS?


I had the same probem when upgrading QtMoko a few days ago. Regardless of  
what fs image I flashed, I would get these error messages.


Completely erasing the NAND allowed me to re-install without problems. Of  
course, it means that your data will be gone. I did not find an easier  
solution, and actually had no important data on the phone.
I followed more or less the steps for clearing bad blocks [1] and threw in  
an erase command somewhere. Unfortunately, I do not remember the details.  
The NOR bootloader offers a help command, however.


If there is a better solution that preserves the FS, I would be happy to  
learn about it.


Raphael

[1] http://wiki.openmoko.org/wiki/NAND_bad_blocks#Clearing_BadBlocks


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Re: QtMoko v26

2010-09-14 Thread Raphael Wimmer
+1
have the same issues with the current settings

Raphael

On Tue, 14 Sep 2010 19:30:45 +0200, Alfa21 freerun...@my.is.it wrote:

 2010-09...@11:37 Radek Polak

 On battery: suspend 5minutes
 When locked: suspend in 20 seconds


 hi radek and hi to all the community in general :)
 on this topic I'd like to open a debate...

 I think the suspend setting in on cable (I'm personally using it as  
 disabled timeout here) should have priority over the suspend setting  
 in locked because if you are on ssh over usb (or usb mass storage) and  
 put (or keep) your FR in locked mode you'll loose the connection.

 this also because I usually have the on battery and when locked both  
 with battery saving schemes as you (I am always locking screen too!) and  
 I forget to unlock my FR when I plug the usb cable in it.

 what do you think?
 is it possible to change the priorities like:
 CABLE over LOCK over BATTERY ?

 do you think this use case is reasonable/common?



-- 

Dipl.-Medieninf. Raphael Wimmer
Wiss. Mitarbeiter / Research Assistant
Doktorand / PhD student

Ludwig-Maximilians-Universität München   E-Mail: raphael.wim...@ifi.lmu.de
LFE Medieninformatik Skype:  real_raphman
Amalienstr. 17 / Raum 206WWW: 
http://www.medien.ifi.lmu.de
80333 MünchenTel:+49 (89) 2180-4659
Germany  Fax:+49 (89) 2180-99-4659

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Re: GNU/Linux Wrist Watch

2010-05-04 Thread Raphael Wimmer
On Tue, 04 May 2010 12:00:28 +0200, Joseph Reeves iknowjos...@gmail.com  
wrote:

 TI's Chronos would be able to display the things you're after:

 http://focus.ti.com/docs/toolsw/folders/print/ez430-chronos.html

 You just need to install the wireless module for it in / near your  
 FreeRunner.


Actually, you first need to be able to get one. I ordered one in February  
and am still waiting for it. Allegedly, shipping of the 433 MHz version  
will only happen in July due to large demand. Others are waiting since  
last year. Some suspect manufacturing problems with the 433 MHz hardware.  
to be the real cause.

Obviously a perfect match for the FreeRunner. :)

More info: http://processors.wiki.ti.com/index.php/EZ430-Chronos

Raphael

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Re: comparing Apples and Oranges $199 iPhone Freerunner GTA02

2008-06-10 Thread Raphael Wimmer
On Tue, 10 Jun 2008 09:45:18 +0200, kenneth marken [EMAIL PROTECTED]  
wrote:

 On Tuesday 10 June 2008 07:37:33 Ron K. Jeffries wrote:
 -- larger physical screen size (but about the same  dpi?)

 i do belive the iphone is lower dpi as the GTA02 is smaller in size, but
 higher in rez.

 -- proximity sensor (knows when held to face, can dim screen)

 that is probably just the heat sensitive screen and some code that  
 basically locks out input ones a heat source with a surface area larger
 then a couple of fingers are detected...
[...]

It's just the capacitive touch screen. I'm pretty sure no temperature  
sensor is involved. As you said ,you just measure the contact area between  
finger and screen (which is easily possible with capacitive touch screens)  
- and once the contact area gets larger than let's say 3cm you assume that  
your ear/cheek is in contact with the screen.

Raphael

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Re: resolution preferences??

2008-06-06 Thread Raphael Wimmer
Hi Carsten,
I'd argue for a VGA screen for three reasons:

On Fri, 06 Jun 2008 07:39:05 +0200, Carsten Haitzler [EMAIL PROTECTED]  
wrote:

 we can just drive the vga screen at qvga. no need for scaling - just  
 change the output at the lcd controller level.

1. Greater flexibility. I can use QVGA apps, I can use VGA apps, and I can  
use apps which are written for a fixed screen size in between.

 but it is a waste to pay for a vga screen when we won't use it.

2. The additional price for the better display is not such a huge problem.  
I don't think that a (marginally?) lower price would mean that many new  
customers. You even might lose potential customers who can't live with  
QVGA. When I get my Freerunner, I probably won't replace it with a newer  
phone soon. As the Freerunner is entirely open-source, it will stay  
compatible with new apps or services for a long time. Thus its life-time  
is probably longer than that of closed phones. The additional price for a  
better display is therefore not such a big issue, I think. With VGA the  
Freerunner has at least one great hardware feature that you won't find in  
every other smart phone. For me this is an important reason for wanting to  
buy one.

 how many people out there can really see the difference? be really
 honest. stop thinking my specs are bigger than your specs.

Me.
3. Having used a Sharp Zaurus for ~5 years I am absolutely convinced of  
VGA resolution (though the Z's screen might be bigger than Freerunner's).  
You can see the difference in UI crispness, when displaying photos, when  
drawing. Due to the higher resolution, anti-aliasing is less important.  
Some of the applications I use most often (e.g. TextMaker (word  
processing), KO/Pi (calendar)) would suffer greatly if you had to scale  
the UI down to QVGA.

So, please keep VGA - and offer smooth, fast switching to QVGA.


Cheers,
Raphael







-- 
Dipl.-Medieninf. Raphael Wimmer
Research Assistant
LFE Media Informatics  E-Mail:  
[EMAIL PROTECTED]
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