Luca: At one point I was trying a Fosphor FPGA image and I remember it was important to set the spp block parameter to be equal in all the blocks that would accept that parameter. So spp=1024 or whatever your FFT size is. That may have changed since 4.0 but that was the case in the past.
<end transmission> > On Aug 14, 2023, at 10:29, Bachmaier, Luca <[email protected]> > wrote: > > > Hello everyone, > > I’m currently developing a GNU Radio flowgraph with RFNoC 4.3 which uses the > RFNoC FFT block. According to this workshop > (https://www.youtube.com/watch?v=4XXqk0yGvCI @ 18:10) there are five runtime > parameters you have to set for the FFT block: magnitude, direction, length, > fft_scaling, shift_config. > I’m not exactly sure where in the flowgraph I can set these properties. E.g. > is setting the “Block Args” parameter of the FFT block to > “magnitude=complex,direction=1,length=1024” correct? If not, what is the > right way to set the runtime parameters? > > After setting them as I described I get two python errors when trying to run > the flowgraph: > > 1. Setting magnitude=complex causes this: > RuntimeError: RuntimeError: Property magnitude:RuntimeError: > Cannot convert `complex' to int! > In the flowgraph, the output of the RFNoC FFT block is connected directly to > an RFNoC Rx Streamer block. It seems that all default RFNoC blocks only > accept an int input. This error seems strange and that’s why I doubt that I > set the magnitude parameter correctly. > > 2. No matter what parameter I set for the FFT, I get the following error: > RuntimeError: ValueError: samples per package must not be > smaller than atomic item size > I was not able to find any sufficient information about this online > unfortunately. > > I hope I was able to describe my problems clearly and would be glad to > receive help regarding any of those. > > Thank you in advance and regards > Luca > _______________________________________________ > USRP-users mailing list -- [email protected] > To unsubscribe send an email to [email protected]
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