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Re: [Discuss-gnuradio] How can I build component usrp on E100?

From: Rafael Diniz
Subject: Re: [Discuss-gnuradio] How can I build component usrp on E100?
Date: Wed, 19 Oct 2011 10:44:13 -0700
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Hi Marcus,
Could you point a commit diff of a grc example and a python example where
such port (USRP1 input converted to UHD input) is done?

Best regards,
Rafael Diniz

> On 19/10/2011 12:53 PM, Josh Blum wrote:
>> You will have to change the block that is instantiated to be a uhd usrp
>> source or sink. There is no reason that rest of your
>> modulation/demodulation chain or mac layer would have to change.
>> Cheers,
>> -Josh
> A further consideration for porting applications/examples that "know"
> that they're talking to a USRP1 is that UHD uses a range
>    of {-1.0,+1.0} for complex_float data streams, and internally scales
> that to whatever is appropriate for the hardware. There are plenty
>    of apps out there that "know" that the data should be in
> {-32767,+32768}, and they will end end producing clipping in UHD unless
> the
>    data are re-scaled.
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