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DMA Driver Framework basics

Question asked by Fernando Amorim on Mar 26, 2014
Latest reply on Jul 11, 2014 by ilke akgöl

Hello,

 

I'm new in the Freescale world and I'd like to know if anybody can help me on the DMA Driver Framework. I'm using CW 10.5, MQX 4.1 and a TWR-K60 KIT. I need to send an SPI message every 50 microsseconds and I think that with the DMA driver it's possible to do that, but I'm not familliar (yet) with the structs and functions of the I/O drivers.

 

I've already read the MQX I/O User Guide. Does anybody have an example using these DMA functions (dma_init, dma_channel_claim, dma_transfer_submit, etc.) so I can understand how to implement them?

 

Thanks in advance.

 

Fernando

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