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by bswiec
Mon Jun 10, 2013 8:02 pm
Forum: Other projects
Topic: Help needed to interface OV7725 camera to Raspberry pi
Replies: 5
Views: 1985

Re: Help needed to interface OV7725 camera to Raspberry pi

The guys here have an FPGA add-on board in the works with some demos that interface to that sensor:
http://valentfx.com/
by bswiec
Fri Apr 12, 2013 8:02 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: CSI for other uses
Replies: 0
Views: 446

CSI for other uses

Hey guys, I know that just reading the title, some of you are already rolling your eyes :) But let me say, yes, I have read a number of threads on this topic and it seems as some things are still open. So i'm hoping for some clarity. I'm running into a bottleneck on the RPI platform that is I/O band...
by bswiec
Sat Mar 16, 2013 5:21 pm
Forum: Troubleshooting
Topic: mmap troubles
Replies: 11
Views: 1237

Re: mmap troubles

Sure enough, your code works! I went back and modified mine a bit and it turns out the issue is that I was reading char* from mmap, but yours was casting the result to uint32_t*. I'm curious why yours worked and mine didn't? I was careful about byte vs word addressing. Oh well, thanks again for the ...
by bswiec
Sat Mar 16, 2013 4:46 pm
Forum: Troubleshooting
Topic: mmap troubles
Replies: 11
Views: 1237

Re: mmap troubles

Does look odd. Perhaps the peripheral hasn't been initialised. Are any SPI modules loaded? Yep! Here's the order of operations (I only posted the snippet relating to reading the spi regs) 1) Initialize SPI peripherals (spi mode, bits per word, speed, etc) 2) Read spi regs (using code above) 3) Send...
by bswiec
Sat Mar 16, 2013 12:09 am
Forum: Troubleshooting
Topic: mmap troubles
Replies: 11
Views: 1237

Re: mmap troubles

Hmmm. I updated the address const int spi_phy_addr 0x20204000 but the result still doesn't seem correct: Address 0x402B7000 = 0x0697073 Address 0x402B7004 = 0x0697073 Address 0x402B7008 = 0x10697073 Address 0x402B700C = 0x0697073 Address 0x402B7010 = 0x1697073 Address 0x402B7014 = 0x20697073 For exa...
by bswiec
Fri Mar 15, 2013 11:33 pm
Forum: Troubleshooting
Topic: mmap troubles
Replies: 11
Views: 1237

Re: mmap troubles

Hmmm on second thought, I think section 1.2.3 answers my question :oops:

Thanks!
by bswiec
Fri Mar 15, 2013 11:29 pm
Forum: Troubleshooting
Topic: mmap troubles
Replies: 11
Views: 1237

Re: mmap troubles

Ahhh, thanks very much! You'd think that working support for a semiconductor company, I'd know better than to only read a small section of the documentation :) Haha! Anyway, this makes more sense. However, I still don't understand how you came up with 0x20204000. Looking at the example: Thus a perip...
by bswiec
Fri Mar 15, 2013 11:14 pm
Forum: Troubleshooting
Topic: mmap troubles
Replies: 11
Views: 1237

Re: mmap troubles

Hello Joan,

Thanks very much for the quick reply!

How do you get that number? I just pulled the address straight from the peripherals user guide. I'd like to be able to understand and calculate myself for future reference.

Thanks!
by bswiec
Fri Mar 15, 2013 10:53 pm
Forum: Troubleshooting
Topic: mmap troubles
Replies: 11
Views: 1237

mmap troubles

Hey guys, I am working on pushing SPI to faster speeds (>32MHz) and I am getting some errors. Anyway, in an effort to debug, I am trying to read the SPI registers to make sure things are set up as I expect them to be. In order to do that, I understand I need to mmap /dev/mem to userspace. Being my f...
by bswiec
Fri Jan 04, 2013 7:30 pm
Forum: Other projects
Topic: Rasberry pi on ipad?
Replies: 1
Views: 1021

Re: Rasberry pi on ipad?

Depending on what you're trying to do, you could set up a vnc server on the RPI which can be controlled by any vnc client. I do this at home with a media/general purpose server. I can connect to it from any computer, tablet, and even my smart phone. You just need to install a vnc client app on the d...
by bswiec
Mon Dec 17, 2012 3:38 am
Forum: General discussion
Topic: Beta Testers - Raspberry Pi - FPGA Shield
Replies: 9
Views: 2929

Re: Beta Testers - Raspberry Pi - FPGA Shield

Hey guys,

Here's a SPI tutorial for this board:

http://code.google.com/p/spi2led/
by bswiec
Mon Dec 17, 2012 1:38 am
Forum: HATs and other add-ons
Topic: MARK-1 Prototype
Replies: 0
Views: 930

MARK-1 Prototype

Hey guys, In response to this thread, I have been helping out testing some of these prototypes and developing some tutorials/projects. I just received my prototype MARK-1 board this weekend and have been experimenting with it. In case you are unfamiliar, the MARK-1 is basically a fully open FPGA add...
by bswiec
Thu Dec 13, 2012 6:04 pm
Forum: General discussion
Topic: Hulu XBMC Plugin
Replies: 8
Views: 4709

Re: Hulu XBMC Plugin

Hey,

Ahh, no I really haven't mucked with any settings or stress tested it at all. Didn't even know you could disable commercials ha!

I'll try out those shows tonight when I get home and see if they work.

I am not using hulu plus or whatever... just freebee stuff.
by bswiec
Thu Dec 13, 2012 3:08 pm
Forum: General discussion
Topic: Hulu XBMC Plugin
Replies: 8
Views: 4709

Re: Hulu XBMC Plugin

FWIW, I run XBMC on Raspbian and I have installed the hulu plugin from bluecop repo. It works just fine for me 95% of the time. On rare occasions, I will get a message asking me what quality playback I want, and the video will quit right after. It is usually on specific episodes of a show. However, ...
by bswiec
Tue Nov 27, 2012 1:17 am
Forum: For sale
Topic: MYRASPIBOX NEW - VESA MOUNT CASE
Replies: 3
Views: 3176

Re: MYRASPIBOX NEW - VESA MOUNT CASE

What are the dimensions? What size VESA mount does it fit?
by bswiec
Tue Nov 27, 2012 1:14 am
Forum: Beginners
Topic: Creating a script with a desktop shortcut
Replies: 6
Views: 8219

Re: Creating a script with a desktop shortcut

I can't comment on your method, but I use the info here on creating desktop shortcuts for my stuff. Works like a charm (with no warning messages)! http://paulscomputernotes.blogspot.com/2012/07/some-enhancements-to-raspbian-on-my-rpi.html specifically: http://forum.lxde.org/viewtopic.php?t=182&f=3 I...
by bswiec
Tue Nov 06, 2012 10:48 pm
Forum: HATs and other add-ons
Topic: Introducing the PiXi Add-on board
Replies: 24
Views: 11785

Re: Introducing the PiXi Add-on board

Hey Mark,

Out of curiosity, is there a reason you went with the older Spartan 3 device instead of, say, xc6slx9 for a similar price point? Has more resources/performance (including DSP slices and hard memory controller).

Packaging issue?
by bswiec
Fri Nov 02, 2012 1:53 pm
Forum: Media centres
Topic: XBMC on Raspbian Error
Replies: 4
Views: 1320

Re: XBMC on Raspbian Error

Are there any, more useful messages above these?

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