I read the manual. And I tried to do everything according to the instructions and existing examples. The yaml source file also uses x300_radio block
вс, 24 окт. 2021 г. в 18:17, Marcus D. Leech <[email protected]>: > On 2021-10-23 5:58 p.m., Ivan Zahartchuk wrote: > > I want to create FPGA firmware for USRP E310 with window function but I get > the error I described above. My yaml file is also attached above. I need to > do windowing and FFT on the FPGA side. And understand why FFT returns zero > values even when it is configured to produce complex data. > > [image: image.png] > > пт, 22 окт. 2021 г. в 17:55, Marcus D. Leech <[email protected]>: > >> On 2021-10-22 6:05 a.m., Ivan Zahartchuk wrote: >> >> Yes I am setting fft for magnitudes. On the front side, I am doing a log. I >> perfectly understand where infinity comes from. I don’t understand why the >> FFT returns 0. But how can I configure the Window? >> >> >> What does uhd_usrp_probe show in the "RFNOC Blocks" section on this >> device? >> >> I think the window RFNOC function in GNu Radio takes a list of the window >> values as a parameter--you can populate that with any of the window.* >> functions >> within Gnu Radio. >> >> >> пт, 22 окт. 2021 г. в 01:51, Marcus D. Leech <[email protected]>: >> >>> On 2021-10-21 6:40 p.m., Ivan Zahartchuk wrote: >>> >>> >>> Hello, I have a problem that when receiving samples from the USRP E310 >>> board, after the FFT block at low gain, zero values are received. After >>> that I log them and get infinity. I wanted to figure out what the problem >>> is, but I have no idea, maybe the Window block will fix the situation. But >>> when building my yaml file, I get the error: >>> [ERR] 2 Unresolved connection(s) >>> [ERR] (window0-out_0 -> fft0-in0) >>> [ERR] (fft0-out_0 -> ep1-in_0) >>> [INF] (('radio0', 'ctrl_port', 'master'),) >>> [INF] (('radio0', 'time_keeper', 'listener'),) >>> [INF] (('radio0', 'x300_radio', 'slave'),) >>> [INF] (('_device_', 'ctrlport_radio', 'slave'),) >>> [INF] (('_device_', 'time_keeper', 'broadcaster'),) >>> [INF] (('_device_', 'x300_radio', 'master'),)Please tell me what >>> could be the problem and how can I add the Window block to my image? >>> >>> >>> >>> _______________________________________________ >>> USRP-users mailing list -- [email protected] >>> To unsubscribe send an email to [email protected] >>> >>> Do you have your FFT configured for log output? Because the logarithm >>> of zero is undefined. >>> >>> >>> _______________________________________________ >>> USRP-users mailing list -- [email protected] >>> To unsubscribe send an email to [email protected] >>> >> >> I noticed looking at your .yaml file that it references x300_radio > blocks, and since this is an E310, that may not be appropriate? I know > that there have > historically been considerable differences between the X300 RFNOC radio > blocks and those for E310. > > >
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