Forum Discussion
15 Replies
- Altera_Forum
Honored Contributor
Do you have some other IP behind it which takes the picture made by TPG? Because the Avalon-ST protocol says, that the source should only send data, if the sink sets ready to 1.
It is a non moving picture, which is either a Testpattern of many colorbars or a plain colorsetting. - Altera_Forum
Honored Contributor
Here is BDF screenshot attached.
https://www.alteraforum.com/forum/attachment.php?attachmentid=7365 Did You mean, that I should use "video_test_pattern_0_avalon_generator_source_ready" ? I now noticed, that it is an input, although it is located on the output side of TPG BSF block. But leaving it unconnected or connecting in to "1" makes no difference. With Signal Tap II I see: https://www.alteraforum.com/forum/attachment.php?attachmentid=7366 Are You sure, that Test-Pattern Generator IP from Altera University Program can produce colorbars? Did You try it by Yourself? Can You advise any TPG with moving colorbars? - Altera_Forum
Honored Contributor
Like in [1] declared, you need to set ready to one, to start the data transfer, or to stop it.
So I advice you to red [1]. Because of, that I think that the TPG is similar to the one of the Video Image Processing (VIP) Suite, I also post the link of the VIP-Spec in [2]. In [2] there is also a section about the Avalon-ST datatransfer. So my advice is to read this first and if you need a deeper detail, read [1]... [1] http://www.altera.com/literature/manual/mnl_avalon_spec.pdf [2] http://www.altera.com/literature/ug/ug_vip.pdf - Altera_Forum
Honored Contributor
I had no problems with TPG from Video Image Processing (VIP) Suite.
Please see once again my previous post, I edited it. - Altera_Forum
Honored Contributor
Could you test, what is on the other wires of the Avalon-ST bus?
And I've not seen any TPG with moving colorbars, sorry. If I need one in future, I will write me one... =) - Altera_Forum
Honored Contributor
--- Quote Start --- Could you test, what is on the other wires of the Avalon-ST bus? --- Quote End --- Here it is. https://www.alteraforum.com/forum/attachment.php?attachmentid=7367 - Altera_Forum
Honored Contributor
--- Quote Start --- And I've not seen any TPG with moving colorbars, sorry. If I need one in future, I will write me one... =) --- Quote End --- I have source code of TPG with moving colorbars from Opencores, but it needs to be adapted to be able to be connected to Altera Avalon-ST because then I need to connect it to Altera Clocked Video Output IP ( from VIP ). If You are interested, I could post it here or here is a direct link: http://opencores.org/project,patterngen,overview Maybe You or someone could help to make this kind of adaptation. - Altera_Forum
Honored Contributor
Could you also post your trigger conditions from the SignalTap Setup-Page?!
- Altera_Forum
Honored Contributor
Trigger conditions from the SignalTap Setup-Page are in default setting - the same I used when examining TPG from VIP.
https://www.alteraforum.com/forum/attachment.php?attachmentid=7370 --- Quote Start --- And I've not seen any TPG with moving colorbars, sorry. If I need one in future, I will write me one... =) --- Quote End --- I have source code of TPG with moving colorbars from Opencores, but it needs to be adapted to be able to be connected to Altera Avalon-ST because then I need to connect it to Altera Clocked Video Output IP ( from VIP ). If You are interested, I could post it here or here is a direct link: http://opencores.org/project,patterngen,overview Maybe You or someone could help to make this kind of adaptation. - Altera_Forum
Honored Contributor
Ah, one more thing.
You have connected the reset input from the TPG to GND, but in the bdf the reset input looks like reset_n, what would say, that your TPG is always in the reset... Check this please!