Re: [Patch-gnuradio] Re: USRP 1 CIC Decimator Removal Patch

[Eric Blossom]

On Wed, Mar 18, 2009 at 05:57:17PM -0400, Paul Creekmore wrote:
> I've not seen this patch applied yet... was there something wrong with  
> the submission?  Or is it still in queue?

No problem with it.  It's logged as ticket:353 and it'll get applied RSN.
We're squashing bugs for 3.2 and working through the backlog.

> Paul Creekmore wrote:
>> Here is a patch to correct a bug in the USRP 1 FGPA code.  As written,  
>> the code will not build if RX_CIC_ON is not defined (if the user  
>> attempts to build a version without the CIC decimator), the compiler  
>> directives include a block of code fails to correctly rout the data  
>> and sample strobe directly to the halfband filter.
>>
>> ---Side note---
>> Incidentally, I've tested the USRP with this patch applied, both the  
>> CIC filter and halfband filter removed, and my quantization code  
>> (previously presented for review on the discussion list) in place and  
>> successfully achieved a 64 MHz sample rate for low quantization  
>> levels.  "Low" is defined by the quality of the USB connection and any  
>> host computer processing/hard drive speed limitations.

Paul,

Do you have any modifications to the gr-usrp code to take advantage of
your changes, or were you using usrp_standard_{tx,rx} stand alone?

Eric