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How to change the display resolution of reference design "HDMI Display controller Tutorial for Vivado using Xilinx VIPP"

Former Member

Hello everyone,

I has successfully implemented reference design "Zedboard HDMI Display Controller Tutorial for Vivado using Xilinx VIPP" on Zedboard with HDMI out at VIDEO_RESOLUTION_1080P.

The reference design supports many resolutions, however when I tried to modify the resolution to 480p, there's nothing showed on the monitor, it displayed "No Signal" only. I edited the resolution here:

   pDemo->hdmio_resolution = VIDEO_RESOLUTION_1080P;
   pDemo->hdmio_width  = 1920;
   pDemo->hdmio_height = 1080;

Could someone help me on how to change the display resolution?

Thank you.

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    Whenever I create a video design which is not working as expected, here is what I do:

    1) verify clocks with oscilloscope

    - are you 100% certain that the video clock is the frequency you expect ?  verify it with an oscilloscope

    2) verify the video timing being generated

    - add logic analyzer (on-chip debug) in your design to validate that the sync signals are doing what you expect them to

    Regards,

    Mario.

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  • 0

    Whenever I create a video design which is not working as expected, here is what I do:

    1) verify clocks with oscilloscope

    - are you 100% certain that the video clock is the frequency you expect ?  verify it with an oscilloscope

    2) verify the video timing being generated

    - add logic analyzer (on-chip debug) in your design to validate that the sync signals are doing what you expect them to

    Regards,

    Mario.

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