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Video in to axi4-Stream not working

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Adventurer
Posts: 74
Registered: ‎07-06-2016
Accepted Solution

Video in to axi4-Stream not working

Hello,

 

I'm trying to get the signals coming from a external camera sensor.The sensor signals are pretty standard and they look like that:

 

Untitled2.jpg

 

Well before to do any real hardware test I wrote a testbench generating a the sensor signals and simulating the core "Video in to Axi4-Stream" correct inputs, the results are quite good:

Untitled.jpg

 

In the simulation I'm only driving:

- FV to vid_vsync

- LV to vid_active_video

- Dout to vid_data

 

And everything works perfectly.

 

Well I'm trying to do the same with the real hardware and it doesn't work and I don't get it when the simulation does....

 

After the previous test I tried to drive the rest of the pins:

Untitled3.jpg

But the axi stream still not working. 

 

Any ideas what could be wrong or missing?

 

Many thanks.

 

 

 

 

 


Accepted Solutions
Xilinx Employee
Posts: 915
Registered: ‎11-09-2015

Re: Video in to axi4-Stream not working

Hi @joseer,

 

Check the overflow and underflow signals of the IP. It could give an information.

 

Regards,

 

Florent

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Xilinx Employee
Posts: 915
Registered: ‎11-09-2015

Re: Video in to axi4-Stream not working

Hi @joseer,

 

My suggestions:

-> synthesize the design and do the simulation again on the synthesized design

-> if this is working, add an ILA on the input to see if the inputs of the Video in 2 AXI4 stream Ip are as you expect.

 

Hope that helps,

 

Regards,

 

Florent

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Please mark an answer "Accept as solution" if a post has the solution to your issue.
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Adventurer
Posts: 74
Registered: ‎07-06-2016

Re: Video in to axi4-Stream not working

Hi @florentw, thanks for your answer,

 

Sorry I didn't say but the simulation I did was a post-synthesis one and it works fine....

 

I already checked the video input and they look ok.

 

Any more ideas?

 

Thanks.

Xilinx Employee
Posts: 915
Registered: ‎11-09-2015

Re: Video in to axi4-Stream not working

Hi @joseer,

 

Check the overflow and underflow signals of the IP. It could give an information.

 

Regards,

 

Florent

--------------------------------------------------------------------------------------------
Please mark an answer "Accept as solution" if a post has the solution to your issue.
--------------------------------------------------------------------------------------------