Is it possible to clear a memory area in RAM with the DMA?

Posted on April 13, 2011 at 13:53

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Guru

Posted on May 17, 2011 at 14:31

You could try memory-to-memory, from a region that contains zeros, the regions could overlap.

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Guru

Posted on May 17, 2011 at 14:31

Yeah, but you'd probably want to do it in 32-bit or 16-bit units, or whatever alignment works for the DMA.

You could use a different fill pattern too.

I there are reason to be using DMA, because it's going to steal a lot of bus cycles?

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sima2Author

Associate III

Posted on May 17, 2011 at 14:31

So if I set buffer[0] = 0 and then initiate a DMA block copy from &buffer[0] to &buffer[1] it should work?

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