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Altera_Forum's avatar
Altera_Forum
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15 years ago

Driver VIP Frame reader

Hello,

First of all I want to say thanks to all the help I got on this forum. Now it's time I can make a contribution myself.

Today I succesfully modified the altfb.c driver for use with the VIP frame reader. This driver is a combination of the old altfb.c driver and the one that can be found on the NIOS Wiki. The features are:

- supports 8-bit per color plane

- The Frame Reader must be connected to the DDR SDRAM (not to SSRAM like the version of the neek_linux_ref_des_mmc_spi design) This way bigger framebuffers are possible

- In the future support for the VIP alpha blender will also be written. This way the user can combine the visualization of input video and a framebuffer from uClinux.

I want to add a few questions because I'm not a real specialist in uClinux (yet) :rolleyes:

- I want to ask hippo or someone to chek the current version before I combine it with the old altfb.c. May be some things that can be left out...

- Is it necessairy to write a tutorial on the nios wiki on how to use it (I have a login for the wiki as well)? I had already the intention to write a tutorial on the PS2 sopc module (university program) on how to implement it because it took me some time before it worked properly

- Another real stupid question, I want to safe my current .config file, but it only seems to contain the options of the first menu (not the specific kernel and app settings). Do I need to safe other files as well? (I must confess I didn't had the time yet to really investigate in this problem, so just a link or a hint is welcome)

The design was tested on a NEEK board and for the enthousiasts I will add the sof and kernel as an attachment and of course also my altfb.c

I hope some can use it...

Best,

Hans

4 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    14 years ago

    Hi, i'm trying to implement it on my DE2-115.

    Do you still have your sopc file?

    Thanks in advance, Miago
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    14 years ago

    Dear Miago,

    I have some good and some bad news for you. Let's start with the bad news to end it as quickly as possible:

    - It's been more than a year since I've used the neek. I don't have the software installed anymore. I'm working with ARM11 at the moment, because of the faster CPU speeds...

    - Although I never throw away older projects, so I still have the project somewhere around here and I think I found it, but I'm not sure... It's available in the attachment.

    I hope this is the one you need because otherwise it could be one of the dozens of projects still on my computer. I must also confess that's been a long time ago and that some in detail feedback will be impossible :oops:. But I think the project contains everything you need.

    Let me know if any problems appear.

    Best

    Hans
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    14 years ago

    Hey, thank you very much!

    after 2 weeks fighting with my LCD I eventually found a way to integrate it in my uClinux.

    Your versoin of altfb.c (altfb_modified.txt) helped very much and gave me hope :)

    Grüsse, Miago
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    14 years ago

    Miago

    Glad to hear someone can use my contribution. Concerning the adaptation for use with the alpha blender, I fear that the idea is postponed into 'the very far' ;-).

    Regards,

    Hans