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Computer Science/Program for DMA transfer using Ping pong buffer

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How do I go about implementing a C code to filter incoming data at each interrupt of a DMA for an FIR filter. I just need to the logic behind solving such a question. I have attached an image of the question. I would I have to work on it and have to submit it by Saturday but could you just help me with where I should get started. I am using the TMS3206C6748 floating point processor. Thanks for the help.

Answer
Vinod,

Normally I reject this type of question because it deals with either HOMEWORK or Schoolwork which YOU need to learn: But I am being generous since I have answered one in quite a while:

Google this:   Direct Memory Access controller filter using linear assembler

http://www.bing.com/search?q=Direct+Memory+Access+controller+filter+using+linear

You will then need to weed through the possible answers.

Good Luck
Jeff

Computer Science

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