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by adammw
Tue Jun 11, 2013 11:26 am
Forum: Advanced users
Topic: HDMI Ethernet Channel - Would it work?
Replies: 17
Views: 27325

Re: HDMI Ethernet Channel - Would it work?

Do you know if the SoC also does not support HDMI ARC? Both are part of the HDMI 1.4 spec. What exactly in the SoC is preventing this sort of data from being accessible to the cpu, why does it allow CEC access but not the other channels? Or is it related to the closed source parts of the firmware?
by adammw
Sun Oct 21, 2012 1:13 pm
Forum: C/C++
Topic: Cross-compiling for 3.2.27 kernel
Replies: 2
Views: 1177

Cross-compiling for 3.2.27 kernel

I'm using the tools from the raspberrypi github page, specifically the arm-bcm2708hardfp-linux-gnueabi compilers, however the resulting binary ends up being (when read with the file command: ELF 32-bit LSB executable, ARM, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 3.3.4,...
by adammw
Tue Aug 21, 2012 4:40 am
Forum: C/C++
Topic: opengl/ changing screen resolution
Replies: 26
Views: 13257

Re: opengl/ changing screen resolution

AFAIK, RGBA32 is just four 8-bit unsigned values, one each for red, green, blue and alpha.
by adammw
Sat Aug 18, 2012 12:49 pm
Forum: Troubleshooting
Topic: Building a cross-compiler for Raspbian on Mac OS X
Replies: 1
Views: 3174

Building a cross-compiler for Raspbian on Mac OS X

Hi, I currently own a Mac and would like to cross-compile programs for the Raspberry Pi rather than having to wait an age for native compiles. I've followed a lot of different instructions around the web, so far I've: * Compiled binutils for arm-bcm2708hardfp-linux-gnueabi * Compiled stage 1 of gcc ...
by adammw
Thu Aug 16, 2012 2:26 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Interfacing with a board from different supply
Replies: 2
Views: 781

Interfacing with a board from different supply

I've been given a lab kit from Uni for my subjects which contains a microcontroller, LCD and some other peripherials. It runs on a 9V which is then stepped down to 3V3. Is it possible to connect any of these digital signals to the Raspberry Pi? And if so, what would be the best way of connecting it ...
by adammw
Thu Aug 16, 2012 1:36 am
Forum: C/C++
Topic: Difference between arm-linux-gnueabi and bcm2708?
Replies: 11
Views: 45779

Re: Difference between arm-linux-gnueabi and bcm2708?

Last time I checked, there was only binaries for Linux - Mac users were left out, no?
by adammw
Mon Jun 25, 2012 2:00 am
Forum: Off topic discussion
Topic: RPi Model C
Replies: 6
Views: 2719

Re: RPi Model C

I think it would be a big mistake if the foundation were to introduce new models at this point because it would fragment the userbase. They also have other things to worry about like the camera module and the stuff (cases, software, documentation etc) for the educational release. Yes, but that's th...
by adammw
Mon Jun 25, 2012 1:54 am
Forum: OpenGLES
Topic: GL extensions
Replies: 4
Views: 2708

Re: GL extensions

Check http://elinux.org/RPi_VideoCore_APIs#OpenGL_ES or http://www.raspberrypi.org/phpBB3/viewt ... 318#p36318, they should list the extensions that are reported as supported by the pre-compiled libraries.
by adammw
Mon Jun 25, 2012 1:46 am
Forum: Off topic discussion
Topic: RPi Model C
Replies: 6
Views: 2719

Re: RPi Model C

I really wish that a new model would use at least ARM7 or higher, having to recompile everything for ARM6 is not fun at all.
by adammw
Sun Jun 24, 2012 2:46 pm
Forum: Beginners
Topic: Turning off after boot
Replies: 0
Views: 551

Turning off after boot

My Raspberry Pi intermittently turns off after booting, and I've tried all combinations of different USB cables, charges, SD cards, and what peripherals are connected, all getting me nowhere. Even the Apple iPod 5V 1A USB Charger (which is listed as working for others on the elinux wiki) is still ha...
by adammw
Wed Jun 20, 2012 7:42 am
Forum: C/C++
Topic: opengl/ changing screen resolution
Replies: 26
Views: 13257

Re: opengl/ changing screen resolution

Its pretty damn pointless to give us header files and sample applications then go back and say sorry we can't tell you how they work but your still allowed to use them. Makes all that GPU power feel very wasteful, and hard for anyone to tinker with- let alone for kids. What about we start a wiki (pa...
by adammw
Tue Jun 19, 2012 8:42 pm
Forum: Beginners
Topic: Switching video modes
Replies: 3
Views: 2545

Re: Switching video modes

You should be able to use /opt/vc/bin/tvservice -e [GROUP] [MODE] to try out the different modes... If you get stuck with one you can't see however, you might need to type blindly or ssh in and go back by typing /opt/vc/bin/tvservice -p Setting the config.txt is the right way to go about it though o...
by adammw
Tue Jun 19, 2012 11:14 am
Forum: C/C++
Topic: vc_dispmanx_display_reconfigure
Replies: 11
Views: 3238

Re: vc_dispmanx_display_reconfigure

chris_c wrote:ok, so what does that function do and where can I find documentation for it.
+1 exactly what I want to know...
by adammw
Tue Jun 19, 2012 10:11 am
Forum: C/C++
Topic: Difference between arm-linux-gnueabi and bcm2708?
Replies: 11
Views: 45779

Difference between arm-linux-gnueabi and bcm2708?

Hi. I'm trying to do some cross-compiling, could someone explain the difference between the arm-bcm2708-linux-gnueabi compilers available from github vs the arm-linux-gnueabi available on my ubuntu machine from the repositories (also the difference between arm-bcm2708hardfp-linux-gnueabi vs arm-linu...
by adammw
Tue Jun 19, 2012 10:00 am
Forum: General discussion
Topic: Screw holes / Mounting the Raspberry Pi
Replies: 27
Views: 18552

Screw holes / Mounting the Raspberry Pi

I just realised that the Alpha boards had holes for screws to screw them into a mounting board from the photos on http://www.raspberrypi.org/archives/78 and this link , but the production board doesn't have any making mounting it on a board or in a case very difficult. Was there a special reason the...
by adammw
Tue Jun 19, 2012 9:51 am
Forum: General discussion
Topic: Tabs not displaying properly in raspberry forum pi theme
Replies: 1
Views: 673

Tabs not displaying properly in raspberry forum pi theme

It seems like the forum theme has been customised to match the rest of the raspberry pi website, but the create post page seems to be missing the styles/scripts needed for the post options to work correctly. Specifically, those "Options", "Upload attachment" and "Poll creation" dot points should rea...
by adammw
Sun Jun 17, 2012 5:58 pm
Forum: General discussion
Topic: microUSB data lines
Replies: 11
Views: 5359

microUSB data lines

Looking at the PCB and the schematic - the data lines on the microUSB port used for powering the device goes nowhere, and it feels to me like a great letdown if someone wanted to use the Pi as an extremely overpowered USB device (think like http://hakshop.myshopify.com/products/usb-rubber-ducky ) or...
by adammw
Sat Jun 16, 2012 10:31 am
Forum: Other projects
Topic: Tool to swap displays HDMI<->SDTV
Replies: 2
Views: 1238

Tool to swap displays HDMI<->SDTV

Hi, I was looking for a way of easily doing this, but the bundled tvservice binary didn't seem to support SDTV, so I went looking for how to do it with the vc_tvservice APIs. I don't really understand them, but I seem to have got something that works and I thought I would share them here: https://gi...
by adammw
Fri Jun 15, 2012 11:43 am
Forum: Debian
Topic: Single FAT SD card partition with loop file for root device?
Replies: 10
Views: 3007

Single FAT SD card partition with loop file for root device?

Ubuntu has been able through Wubi to install itself onto a NTFS drive by creating a loop file in the filesystem that contains the ext4 filesystem, could a similar thing be done with the Debian-based raspberry pi kernel? This would have the added benefit of a simple drag-and-drop experience for creat...
by adammw
Fri Jun 15, 2012 4:59 am
Forum: Troubleshooting
Topic: HDMI/DVI Output can't be re-enabled after turned off
Replies: 3
Views: 3678

HDMI/DVI Output can't be re-enabled after turned off

Disclaimer: This post is both troubleshooting and programming - not sure which section to put it in. I'm trying to experiment with the vc_tvservice APIs and the tvservice binary provided itself, and I've noticed that when you turn the screen off and on again like so: /opt/vc/bin/tvservice -o /opt/v...
by adammw
Fri Jun 15, 2012 4:45 am
Forum: C/C++
Topic: opengl/ changing screen resolution
Replies: 26
Views: 13257

Re: opengl/ changing screen resolution

I was looking around in vc_tvservice.h and I wondering any of those APIs may help to achieve the original goal of dynamically changing resolution rather than scaling. There's a bunch of vc_hdmi_power_on functions that take arguments and try to find the closest supported resolution or framerate to wh...

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