UP core: DMA Controller for video -- How to swap to the back buffer address

[Altera_Forum]

Hello there, 

 I am working on a video system with soft processing on Nios II. Hardware: Camera MT9P001 (TRDB-D5M), Board DE2-70, LCD (TRDB-LTM).  I developped a SOPC with the following structure: Camera -> ... -> DMA Controller for video (altera_up_avalon_video_dma_controller)  -> SSRAM -> Pixel Buffer DMA Controller (altera_up_avalon_video_pixel_buffer_dma) -> ... -> LCD.  Question: The entire system functions now. And I'm trying to develop a C program doing some optimizations using the Eclipse. I found that it is possible to do a dynamic swapping between the starting buffer and the back buffer for the Pixel Buffer DMA Controller, using the functions defined in "altera_up_avalon_video_pixel_buffer_dma.h" in the BSP project. Now I would like to do the same swapping for the DMA Controller so that I can save the video stream in different parts of the SSRAM. But I cant find the same kind ".h" file for DMA Controller. Can you help me please?  !!!: The DMA Controller I'm using is not the /bridges/DMA/DMA Controller, it is the one in the /University Program/Audio & Video  Thank you very much! :)

[Altera_Forum]

Adonis, what are you using as Reset Vector/Exception Vector for your Nios II processor? On my project when I use "on_chip_memory" it works, but when I use sdram it does not work. Do you have any ideas? 

 Sorry, I cannot help you with your question.