Large data transfers between ARM and DSP

KTM

Anybody know the preferred method for "moving" data from gpp to DSP memory space? I've seen references to CMEM and PROC_write. What else is available? What's the best technique in terms of speed and simplicity when the gpp needs to provide 100MB of data to the DSP for processing. I'm using the OMAP3530EVM for now. Thanks.

over 17 years ago

0 Juan Gonzales over 17 years ago

TI__Mastermind 37340 points

CMEM would be the way to go. CMEM memory space is shared by ARM and DSP, so by using CMEM all you need to pass is a memory pointer and not the 100 MB of data itself.

0 KTM over 17 years ago in reply to Juan Gonzales

Intellectual 850 points

Juan,

Thanks for the quick reply. Is this ( http://wiki.davincidsp.com/index.php/CMEM_Overview ) a good place to start or can you suggest another doc? I am new to the Linux world.

Thanks.

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Large data transfers between ARM and DSP