Use DMA in linux (SD Card)

[jporte]

Good afternoons,

Where can achieve a code example in c (or if no in pythn) that use a DMA. This code the executare directly des ssh, therefore directly from the inside of the Red Pitaya. In the hardware already have implemented the DMA, and loading since the SDK directly to the Red (without the SO), the DMA worked properly. The purpose achieve do work the dma directly from the inside of the SD (without interaction with the SDK).

I have attached an image of the hardware that is executing in the Red Pitaya (there is more code in VHDL But it does not form part of the functionality of the DMA). The DMA only use two fifos one of writing and the other of reading, and writes or reads from the DRAM.

Thanks you very much

Att. JPorte.