VGA support on ZYNQ

Hi
I am Designing my Own Board based on Zynq.And our system need a simple GUI, so we want to choose VGA display. But on the Zedboard, VGA is connected with PL, I think it makes things complicated. Could VGA connected with PS part directly through MIO? Any solutions? Thanks!

0 Former Member over 12 years ago

Hi!
It is possible to connect VGA signals via PS, BUT, after then you will have to use PS execution time to generate VGA signals(there is not VGA Core inside ZYNQ). I think that you will be able to generate by software something like 640x480 resolution, and using 40-50% of processing time for generating VGA signals.
The best option is to write VGA Core and characters generator in PL, you will be able to generate FullHD signal. It's not so hard to write this cores, and communicate via AXI Interface (but remember that the bigger resolution you want, the more memory you need for graphics).
If you are using Linux, you may be interested in this project http://www.zedboard.org/node/201
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0 Former Member over 12 years ago in reply to Former Member

Thanks for your explanation!
I just find that ZYNQ has better support/examples for HDMI, so could I use a HDMI to VGA convertor to get VGA signals based on HDMI outputs? Thanks!
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0 Former Member over 12 years ago

As you want but writing simple VGA core is not so hard :)
If you are writing in Verilog - you may be interested in Fpga4Fun.com site. There are some examples in Verilog.
As far as I know Linux Project I mentioned earlier is using HDMI.
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