[Mep-dev] TI OMAP

Bob McGwier rwmcgwier at gmail.com
Sun Feb 1 14:45:34 PST 2009


Given that all Beagleboard support for ethernet is provided by USB 
ethernet dongle,  using the USRP rather than USRP2 in the beginning 
certainly makes sense.  We will be limited as to the bandwidth we can 
support with the Beagle Board of course.

There is little need for anything for now but narrow band support since 
to/from the beagle board there can be only narrow band supported 
realistically.

We will need to engage FPGA work to make the devices (USRP, HPSDR, 
QS1R,  etc.) to make the wideband instruments to interface with the RF 
boards.

Bob



Philip Balister wrote:
> Michelle wrote:
>   
>> Ordered three beagleboards (i.e. Dog Pack) this morning. 
>>
>> I think Phil has a USRP (not sure if it's a 1 or 2, but it's older, so I'm guessing a 1) laying around that I might be able to borrow. I have a constellation of hpsdr boards that need to earn their keep as well.
>>     
>
> At some point I am hopeful we will have some boards that can interface a 
> USRP daughterboard to the beagle expansion connector. Chris sounds like 
> his guy is getting somewhere. (The problem with senior projects, they 
> are due at the end of the year)
>
> Issues that need chasing for USRP support, Angstrom is using libusb-1.0 
> (or what will become that) which breaks the GNU Radio usrp driver. I can 
> hack around it and build the old version, but I really want to see 
> gnuradio get fixed since the libusb guys have indicated people need to 
> be moving to the 1.0 version.
>
> In the next few weeks, I'm going to look at moving data in/out of the 
> beagle via SPI. The best we can do with the beagle would apply the MMC 
> interface on the expansion connector.
>
> For really serious SDR work, I think the answer is to use the Gumstix 
> Overo line. The connector on the Overo products let you connect to the 
> GPMC (General Purpose Memory Controller, I think) interface. This would 
> let us treat the FPGA as memory.
>
> I haven't worked through all the MEP info, but I'll be glad to help you 
> work through Beagle related issues. Intel must be stopped :)
>
> Philip
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>
>   


-- 
(Co)Author: DttSP, Quiktrak, PowerSDR, GnuRadio 
Member: ARRL, AMSAT, AMSAT-DL, TAPR, Packrats,
NJQRP, QRP ARCI, QCWA, FRC.
"It is human nature to think wisely and act in
an absurd fashion.", Anatole France.



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