[USRP-users] RFNoC: Radio --> RFNoC:FFT with stream args

2018-01-16 Thread Dixon, James L via USRP-users
Hi,

I am creating a grc flowgraph with RFNoC blocks, some of which are custom 
blocks I created.  To start, I am simply trying to connect an RFNoC:Radio block 
(in RX mode) to an RFNoC:FFT block, where I am setting the spp parameter in the 
Radio's Stream Args box to the FFT size (spp = 128).  I see quite a lot of 
discussion in the group over the years regarding this issue.  Setting the spp 
parameter doesn't work for me.  In fact, it doesn't seem to do anything.  I 
always get the error: Source IO size "8" does not match sink IO size "1024", no 
matter what I set spp to.  Any ideas?

thanks,

Jim
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[USRP-users] problem installing uhd-fpga related to pyqt5

2017-08-28 Thread Dixon, James L via USRP-users
Hi,

I am installing gnuradio/rfnoc on a Ubuntu 14.04 machine using Pybombs.  
Everything goes well until it starts to install uhd-fpga, and the first thing 
it tries to do here is install pyqt5 (PyQt 5.6).  When configuring the pyqt5 
package, it says "Configuration failed. Re-trying with higher verbosity."  Then 
I get the failure "Error: Make sure you have a working sip on your PATH or use 
the --sip argument to explicitly specify a working sip."

I don't know what to do here.  I've installed gnuradio/rfnoc before but never 
got this error. I saw something online stating that pyqt5 requires Python 3.5 
or later, and I only have Python 2.7.6 and 3.4.3, so maybe that's the 
problem???  Please help.

Thanks.
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[USRP-users] RFNoC:Delay block?

2017-08-02 Thread Dixon, James L via USRP-users
Hi,

I am wondering if there is some type of variable delay block available in 
RFNoC.  I see that there is a Delay block available in gnu-radio, but I need it 
to be in the FPGA.

Thanks,

Jim

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