I've done a fair amount of work with using the C64x+ DSP in and out of GNU Radio using the TI tools, you download my code and some custom gnuradio blocks for the omap processor based on the C64x+ DSP. I've tested this code on a Beagleboard but it should work for the E100.
I recommend using the Linux tools for development and to use Code Composer for debugging ... I include a brief description of the tools you need to install to use the DSP my preference is to use DSPLink versus Codec Engine for GPP/DSP communication because it's simpler to program. Good luck and feel free to send more detailed questions over the listserv once you start the work.
al fayez
-----Original Message-----
From: Brian Padalino <address@hidden>
To: Scott Johnston <address@hidden>
Cc: discuss-gnuradio <address@hidden>
Sent: Thu, May 5, 2011 6:17 pm
Subject: Re: [Discuss-gnuradio] Questions about E100