Hi Ivan, I think you might also check the typos, as I think for the fft0 module from Ettus should have input port name "in_0" and output port name "out_0", unless you've modified it.
Hope this helps and good luck! Thanks, Ming ________________________________________ From: Ivan Zahartchuk <[email protected]> Sent: 24 October 2021 17:40 To: Marcus D. Leech Cc: discuss-gnuradio; usrp-users Subject: [USRP-users] Re: Fwd: Adding a Window block to an RFNOC graph ** THIS MESSAGE ORIGINATED OUTSIDE LOUGHBOROUGH UNIVERSITY ** Be wary of links or attachments, especially if the email is unsolicited or you don't recognise the sender's email address. 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]<mailto:[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.png] пт, 22 окт. 2021 г. в 17:55, Marcus D. Leech <[email protected]<mailto:[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]<mailto:[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]<mailto:[email protected]> To unsubscribe send an email to [email protected]<mailto:[email protected]> Do you have your FFT configured for log output? Because the logarithm of zero is undefined. _______________________________________________ USRP-users mailing list -- [email protected]<mailto:[email protected]> To unsubscribe send an email to [email protected]<mailto:[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. _______________________________________________ USRP-users mailing list -- [email protected] To unsubscribe send an email to [email protected]
