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by arturo777
Wed Nov 18, 2015 11:10 pm
Forum: Advanced users
Topic: Running IOT protocols like CoAP,6LowPan, RPL on Raspberry pi
Replies: 6
Views: 5895

Re: Running IOT protocols like CoAP,6LowPan, RPL on Raspberr

I'm also trying to get this working to link some TI SensorTags with my Pi. So far I've managed to bring up a lowpan interface using an OpenLabs Raspberry-Pi-802.15.4-radio by following the How to install 6LoWPAN Linux Kernel on Raspberry Pi guide, but haven't got any actual data going though just ye...
by arturo777
Sat Jun 15, 2013 9:38 pm
Forum: OpenGLES
Topic: Developing for Pi in Visual Studio
Replies: 8
Views: 16222

Re: Developing for Pi in Visual Studio

Check out the ANGLE Project - Almost Native Graphics Layer Engine. https://code.google.com/p/angleproject/ The goal of ANGLE is to allow Windows users to seamlessly run WebGL and other OpenGL ES 2.0 content by translating OpenGL ES 2.0 API calls to DirectX 9 API calls. This will handle the graphics,...
by arturo777
Thu Oct 04, 2012 8:06 am
Forum: OpenVG
Topic: Example program to draw random shapes using the C compiler
Replies: 72
Views: 55876

Re: Example program to draw random shapes using the C compil

I guess you probably want to change the transform matrix, using a combination of vgGetMatrix, vgTranslate (and maybe vgRotate and vgScale) and vgLoadMatrix. This should allow you to redraw the same path in a different location without changing the underlying path. Drawing to a surface or texture wou...
by arturo777
Mon Aug 06, 2012 10:21 am
Forum: OpenGLES
Topic: Getting started
Replies: 6
Views: 1922

Re: Getting started

That's true, there is quite a lot of code to do something simple :shock: Actually, I mixed up my samples a bit, hello_triangle is simpler! I'm also a complete beginner, but I'll try to walk you through what I have learnt so far ;) Looking at the makefile in hello_triangle , it basically sets the spe...
by arturo777
Fri Aug 03, 2012 8:03 am
Forum: OpenGLES
Topic: Getting started
Replies: 6
Views: 1922

Re: Getting started

I'd suggest having a look at the triangle2 sample located here: https://github.com/raspberrypi/firmware/tree/master/opt/vc/src/hello_pi/hello_triangle2 It is also preinstalled on the pi, I think in /opt/vc/src/hello_pi/hello_triangle2 . To build this and the other samples in hello_pi , check out: ht...
by arturo777
Fri Jul 13, 2012 9:11 am
Forum: Android
Topic: Porting Android
Replies: 264
Views: 201790

Re: Porting Android

I just found another resource about Android platform development that is very interesting reading: A Practical Real-World Approach To Android Platform Development In ODROID . The guide is about getting Android going on the ODROID platform, however many of the issues are the same. http://com.odroid.c...
by arturo777
Thu Jul 12, 2012 3:54 pm
Forum: Beginners
Topic: USB HDD
Replies: 28
Views: 25307

Re: USB HDD

Hi, It is only possible to start the system from an SD card - i.e. you must have one installed for the pi to work. This needs to have the firmware on it and the initial boot image (e.g. a kernel). Using special kernel parameters or UBoot (a secondary bootloader that provides more options - still in ...
by arturo777
Wed Jul 11, 2012 8:21 am
Forum: Bare metal, Assembly language
Topic: Adventures in bare metal
Replies: 15
Views: 8318

Re: Adventures in bare metal

Talking about boot loaders etc, I have a question: Is it possible to boot a bare metal program using "kexec"? In theory this now exists for ARM. That would be an interesting way of developing on the Pi itself. Couple that with a little routine to reset the system after running the program, one could...
by arturo777
Tue Jul 10, 2012 3:27 pm
Forum: Android
Topic: Porting Android
Replies: 264
Views: 201790

Re: Porting Android

Why is it crashing though, does Android log it anywhere? Depending how far along it got, logcat might be working, in which if you've got the android SDK installed, you can use: adb logcat This might be alittle tricker though, as you'd have to connect via ethernet rather than USB, which would requir...
by arturo777
Tue Jul 10, 2012 3:21 pm
Forum: Android
Topic: Porting Android
Replies: 264
Views: 201790

Re: Porting Android

The reason I ask about which file system is because apparently an android kernel can be used to start an non-android one. Reading http://elinux.org/Android_on_OMAP#Kernel_configuration , it appears this makes it easier to iron out problems, although if it is failing so early on I guess it is never m...
by arturo777
Tue Jul 10, 2012 2:43 pm
Forum: Android
Topic: Porting Android
Replies: 264
Views: 201790

Re: Porting Android

I narrowed it down to the CONFIG_ANDROID option. Whenever that one is enabled, I get the colour screen. It's in Device Drivers -> Staging -> Android. Its suboptions don't matter. Thanks :) Do you know what actually produces the colour screen? Question: are you try to start a "standard" file system,...
by arturo777
Tue Jul 10, 2012 11:15 am
Forum: Android
Topic: Porting Android
Replies: 264
Views: 201790

Re: Porting Android

What exactly does the infamous "colour screen" look like? :idea: I'd like to check that we're seeing the same thing.
by arturo777
Tue Jul 10, 2012 11:01 am
Forum: Android
Topic: Porting Android
Replies: 264
Views: 201790

Re: Porting Android

Ok, I guess the next step is to use different patches...

I'm reading through this guide, maybe it helps: http://elinux.org/Android_on_OMAP#Patch_extraction
by arturo777
Tue Jul 10, 2012 10:02 am
Forum: Android
Topic: Porting Android
Replies: 264
Views: 201790

Re: Porting Android

Mine is here if you want to try, I won't be able to until tonight...

http://dl.dropbox.com/u/90715939/pi/ker ... roid_1.zip

I guess you are using the latest firmware if it works fine without the patches ;)
by arturo777
Tue Jul 10, 2012 9:01 am
Forum: Android
Topic: Porting Android
Replies: 264
Views: 201790

Re: Porting Android

I just read over on the e-linux pi wiki that if you are using the older firmware, the compiled Image file needs to be converted with a python script. See http://elinux.org/RPi_Kernel_Compilation for details. The latest firmware doesn't have this restriction, it'll work with the standard Image or zIm...
by arturo777
Mon Jul 09, 2012 9:43 pm
Forum: Android
Topic: Porting Android
Replies: 264
Views: 201790

Re: Porting Android

I managed to build an Android kernel using basically the steps outlined by Casey Anderson here: http://headlessandroid.blogspot.hu/2012/07/android-raspberry-pi-kernel-build.html It worked basically flawlessly! :D For anyone else doing this, here is what I did (but credits to Casey for the awesome gu...
by arturo777
Sat Jul 07, 2012 11:13 pm
Forum: Troubleshooting
Topic: Strange reboot
Replies: 1
Views: 495

Re: Strange reboot

I have the same problem - the Pi seems to halt rather than to reboot (it turns off the HDMI).

I'm running the "Debian squeeze" image.
by arturo777
Fri Jul 06, 2012 12:44 pm
Forum: General discussion
Topic: Cross-Compiler for Windows
Replies: 62
Views: 50289

Re: Cross-Compiler for Windows

Another tool chain is YAGARTO: "Yet another GNU ARM toolchain".

http://www.yagarto.de/
by arturo777
Fri Jul 06, 2012 12:28 pm
Forum: General programming discussion
Topic: Got bare bones graphics working
Replies: 58
Views: 33992

Re: Got bare bones graphics working

...So will need to write USB stack or other input method or rig a pcb to use p/s2 keyboard.... I have been wondering about this exact same thing - how much effort it would be to get a USB keyboard going on bare metal. I've had a bit of a look at the Synopsys USB driver code being used and it looks ...
by arturo777
Tue Jul 03, 2012 7:35 am
Forum: General discussion
Topic: Forum for bare metal programming
Replies: 5
Views: 1234

Forum for bare metal programming

It would be fantastic if a forum could be created specifically for bare metal development, as currently there are a lot of posts being written in many different forums, such as "Programming: General / beginners' discussion", "Programming: C/C++", "Programming: Other languages" and "Operating system ...
by arturo777
Wed Jun 20, 2012 7:50 am
Forum: Android
Topic: Porting Android
Replies: 264
Views: 201790

Re: Porting Android

Despite the ram limitation, ICS might be worth considering rather than Gingerbread. I have installed CyanogenMod 9 (actually miniCM9) on a Sony Xperia X8 for development work, which also has 256 MB (or less - I'm not quite sure, some sources say 168MB) and have been quite impressed. Most of the apps...
by arturo777
Fri May 11, 2012 1:57 pm
Forum: Other projects
Topic: Aros on Raspberry Pi (ie. Amiga) photo on Arm Aros on Galaxy Nexus
Replies: 3
Views: 2255

Re: Aros on Raspberry Pi (ie. Amiga) photo on Arm Aros on Galaxy Nexus

<t>That's pretty interesting.<br/> <br/> Could you share some details about how that is running on the Galaxy Nexus? It looks like some sort of virtualization or emulation, judging from the Android UI visible at the top of the screen, which makes it quite a feat.<br/> <br/> In any case, the OSs, the...
by arturo777
Wed Apr 18, 2012 7:36 am
Forum: General discussion
Topic: Boot menu to choose distro and/or memory model of choice.
Replies: 54
Views: 17918

Re: Boot menu to choose distro and/or memory model of choice.

Dom, another highly knowledgeable individual has chimed in on this too:


It's just the default framebuffer (and it's programmable).

OGLES and H264 will be full colour.


Indicating that we'll be able to choose colour depth (and not be stuck with 16bbp)
by arturo777
Thu Apr 05, 2012 10:58 pm
Forum: General discussion
Topic: Please send some boards to important key developers without CE of FCC
Replies: 47
Views: 7363

Re: Please send some boards to important key developers without CE of FCC

<t>Bakul said: <br/> <br/> <br/> A bit late to worry about this issue.<br/> <br/> While we wait a useful project might be to add code to qemu for a '-M raspi' option that emulates 2835 peripherals logic as per the datasheet. Plus a framebuffer. Such a thing would have a number of uses.<br/> <br/> <b...
by arturo777
Wed Apr 04, 2012 8:30 am
Forum: Staffroom, classroom and projects
Topic: ARM Assembly / Operating System
Replies: 48
Views: 16349

Re: ARM Assembly / Operating System

<t>I'm also looking forward to this challenge <br/> <br/> Initially I was a little disheartened by the complexity / binary "blob" issue, but now I realize that almost any device suffers from these issues and that the Raspberry Pi offers a special opportunity by collecting so many like-minded people....

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