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Scattered DMA controller 8.0

Altera_Forum
Honored Contributor II
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Hello all, Hope some one can help me. 

 

I am trying to use the scattered DMA controller and , as not very good in C, I seem to be having some problems. 

 

I initially downloaded the SGDMA Example posted on alteras website, which I was able to successfully implement. After that I tried to edit the Nios code to add multiple descriptors to my DMA controller but had no luck at all in getting it to work 

 

Basically I need my DMA Controller to first send 10 words of data with start and stop signals. 

Then send a video packet with start and signals. I need this too be done continue sly until told to stop. 

 

I have got the system to work with one Descriptor but don't know how to make two descriptors and initialize them to continuously run. 

I was hoping some one could give me an example. 

Hope to hear from some on soon 

regards
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