Raspberry Pi Forums

otah007

I had already tried what you suggested, however! On closer inspection there was a bug in my mailRead function which would cause it to fail if the response message was not 0: mailRead_wait: LDR R2, [R1, #MAILBOX_READ_STATUS] TST R2, #MAILBOX_STATUS_FULL BNE mailRead_wait LDR R2, [R1, #MAILBOX_READ] A...

otah007

I am attempting double buffering by creating a framebuffer twice the height of the target resolution, then using the bottom half as a back buffer while the top half is the front buffer, and vice versa. This requires regular communication to the VC via the property mailbox to request that the y-posit...

otah007

Problem solved! I had not been using a linker script! I can only assume the program binary was dumped somewhere unreasonable since I didn't specify a location. My previous programs all worked but they never talked to the VC so I assume that must also be part of the problem. Thank you for the help re...

otah007

I have found out a few things. It seems that the size of the buffer is exactly 1920*64 bytes, regardless of the requested resolution or bit depth. Incidentally, my monitor has 1920x1200 resolution. Incrementing the value I write by one each time I write a byte draws a strange pattern, unfortunately ...

otah007

Thanks for your help, however the program still does not work properly. I have added the stack pointer initialisation and modified where the status is read from when writing to the mailbox. However, I still get a return value of 1 after requesting a framebuffer. Ignoring this and writing anyway, I g...

otah007

I have been trying to get something to display on the screen using assembly and an RPI model B. Through much trial and error, the best I have managed is to draw a broken blue line horizontally across the centre of the screen. I have only succeeded in colouring the screen completely once, and resetti...

otah007

I did -o about a gazillion times, using hdmi AND local - again, no use.

otah007

I am using XBMC 12.2 on the latest Raspbian version.

otah007

Hi Pi lovers! I have a problem wih XBMC - every time I try to access a internet - based menu (downloading addons, changing weather provider, etc.) I get a black screen. The mouse disappears after a few seconds of inactivity (as normal) and I can press ESC to go back to the previous screen (as normal...

otah007

I've tries MP4 files to no avail. Also I've downloaded XBMC but for some reason it can't connect to the internet - whenever I click something that accesses the internet the screen goes black and the mouse disappears after a few seconds of inactivity (as normal). All I can do is press ESC to go back....

otah007

I have rebooted multiple times, and I have changed the amount of memory for the GPU too, to no avail. However I was not aware you could download XBMC on Raspbian - I will try that instead.

otah007

Thanks gkreidl for the quick reply. I have 128mb reserved for GPU and 128mb for CPU.

Also I have corrected an error in my initial post - it seems my video file is an AVI.
I will test an MP4 soon and post the results.

otah007

I've been trying to enable sound in OMXplayer for a few hours now and nothing I can do works. I am playing an AVI file with 2 MP3 audio channels and it's not working. I have tried the following: - Installed the latest sound programs via apt-get (modprobe and that stuff) - Done the 'hello_sound.bin' ...

otah007

Just thinking about HL not being open source, the Black Mesa project have released the original game, updated to use the Source engine (ie look like HL2 etc) with updated physics, textures and enhanced story ....for FREE! So I can't see why a Pi version couldn't at least be attempted. :mrgreen: I c...

otah007

I've tried disabling overscan, and it works - but it's hardly usable as there is a large portion of the display out of the screen. Thanks for the tip though!

otah007

I've just run Minecraft: Pi Edition and everything seems to be working... except that when I run it, it generates two windows - one like a regular window, with the name and the 'x' in the corner, etc., and then it opens another window offset from the first one with the actual game in it. It's as if ...

Search found 16 matches

Re: VC stops responding to property mailbox requests after 8 requests

VC stops responding to property mailbox requests after 8 requests

Re: VideoCore returning 1 on framebuffer request

Re: VideoCore returning 1 on framebuffer request

Re: VideoCore returning 1 on framebuffer request

VideoCore returning 1 on framebuffer request

Re: OMXplayer has no audio - tried absolutely everything

Re: XBMC black screen when trying to access internet

XBMC black screen when trying to access internet

Re: OMXplayer has no audio - tried absolutely everything

Re: OMXplayer has no audio - tried absolutely everything

Re: OMXplayer has no audio - tried absolutely everything

OMXplayer has no audio - tried absolutely everything

Re: Half-Life

Re: Minecraft: Pi Edition - Strange windows and no sound

Minecraft: Pi Edition - Strange windows and no sound