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anyone used dma with the dspic?

 
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starfire151



Joined: 01 Apr 2007
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anyone used dma with the dspic?
PostPosted: Sat Dec 12, 2009 4:01 pm     Reply with quote
Has anyone used the DMA facility built into the dsPIC33FJ128GP706 (or similar) devices?

The latest version of the PCD manual states three parameters for the dma_start() instruction (channel. mode, and address). I bought the CCS dsPIC Analog Development Board and have the Lesson 12 Tutorial working (thanks to help from Corey in CCS Tech Support) but it lists 4 variables in the dma_start() instruction. I believe the 4th parameter is probably for the number of values to transfer, with the size of the values specified in the setup_dma() instruction. Is that correct?

Thanks.

Dave
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Re: anyone used dma with the dspic?
PostPosted: Mon Jan 11, 2010 8:18 am     Reply with quote
Hi Starfire151,

I also bought the dsPIC Analog Development Board but the example 12 is not working for me. It cannot detect the SD/MMC card. Can you share the source code about the example 12?

- shaharil -







starfire151 wrote:
Has anyone used the DMA facility built into the dsPIC33FJ128GP706 (or similar) devices?

The latest version of the PCD manual states three parameters for the dma_start() instruction (channel. mode, and address). I bought the CCS dsPIC Analog Development Board and have the Lesson 12 Tutorial working (thanks to help from Corey in CCS Tech Support) but it lists 4 variables in the dma_start() instruction. I believe the 4th parameter is probably for the number of values to transfer, with the size of the values specified in the setup_dma() instruction. Is that correct?

Thanks.

Dave
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