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Re: [Discuss-gnuradio] User experience with E1x0 boards


From: Josh Blum
Subject: Re: [Discuss-gnuradio] User experience with E1x0 boards
Date: Tue, 03 May 2011 15:33:52 -0700
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.15) Gecko/20110419 Lightning/1.0b2 Thunderbird/3.1.9

> 
> 4) Be sure to tell UHD you want integer samples. I'm thinking even then
> UHD has to swap IQ for historical reasons. (Josh, help?)
> 

There is a copy-conversion operation between kernel buffer memory and
user memory. If the user requests complex shorts, I believe the
conversion is the equivalent of a 16 bit integer pair swapping. This
routine could be replaced with NEON intrinsics pretty easily.

-Josh



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