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Hello there!
I am trying to run the demonstration I downloaded from there: http://www.nioswiki.com/Nios2EmbeddedEvaluationKit/Altera's_Video_and_Image_Processing_Suite_Demo_on_the_NEEK I cannot say it does not work, actually it does something. However, there is absolutely no interactivity with the source code provided. In the main.c, there is a loop which (I suppose) should provide some interactivity. But this loop is never reached. When I set breakpoints, I can go step by step until Mixer_init(); This starts the video display, but that's the last function I can step over. If I try to step into one of the functions after this line, the debugger seems to be lost. Basically what I would like to do first is: - Have some interactivity (draw menus, etc), and have actions caused by these menus; - Grab a frame's data buffer; - Do some processing on it. Some questions: - What is the minimal configuration? If I comment out the lines Clipper_init() or Scaler_init() that are before Mixer_init(), then the image does not show. But I don't need a scaler and a clipper. - Is there some free IP with full source code around? For instance showing hot to get an interrupt, read a frame from some memory buffer, return a pointer to it, etc, working on NIOS? The problem with the prebuilt elements is that there is no access to the source code. I would be happy to know for instance, what is in Mixer_init(). Well, I know that it's a wrapper function managing an object, but I would like to know what exactly happens in the object itself. Thanks. By the way, could somebody at Altera filter the irrelevant comments at this link: http://www.nioswiki.com/Nios2EmbeddedEvaluationKit/Altera's_Video_and_Image_Processing_Suite_Demo_on_the_NEEK PascalLink Copied
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I downloaded and modified this one (http://www.nioswiki.com/@api/deki/files/421/=neek_vip_demo_lcd_svga_v91_2.zip) (it doesn't compile out of the box, but the fixes are really simple)...comes with source. As far as the debug behavior you describe, that's caused by optimization. "-O0" is what you want to use.
Cheers, -slacker- Mark as New
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Hello!
Thanks for your reply! I downloaded the same one. Actually it was the program I was already using. It compiles out of the box in my case, but the image is swept by an horizontal line a few times, then the top blue band is replaced by a white band, then after a while the image disappears completely and is replaced by a color pattern (the image is split horizontally, the top half is a gradient from blue to lime green, and the bottom part is a gradation from red to yellow). Now I'm not sure how to set the option -O0. I right-clicked the project, went to properties -> C/C++ build and added -O0 (minus capital-O zero) in the field "compiler invocation command". Is this right? Anyway it does not change anything, I still cannot enter the functions I want to jump into (at least after the mixer is started). By the way, I am using quartus 9.1 sp2 and NIOS 9.1 IDE. Both were downloaded at the same time, so I guess they fit. Now I have rebuilt the same program from scratch (as you tell me it works fine), but I get the same result as before: no interactivity at all. Could you describe how your program works? As for mine, the image (roughly 640 x 480) is centered and it displays live video. The top margin (from the top of the screen to the top of the picture) has been replaced by a blue rectangle. That's it. No interaction although the touch panel is enabled. It never enters the while loop. As there are issues with the debugger, I print a marker everytime the loop is entered, but nothing is printed on the console, so the loop is not reached. Any idea? Thanks, Pascal
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