вс, 24 окт. 2021 г. в 18:17, Marcus D. Leech <patchvonbraun@gmail.com>:
On 2021-10-23 5:58 p.m., Ivan Zahartchuk wrote:
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 haveI 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.
пт, 22 окт. 2021 г. в 17:55, Marcus D. Leech <patchvonbraun@gmail.com>:
On 2021-10-22 6:05 a.m., Ivan Zahartchuk wrote:
What does uhd_usrp_probe show in the "RFNOC Blocks" section on this device?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?
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 <patchvonbraun@gmail.com>:
_______________________________________________On 2021-10-21 6:40 p.m., Ivan Zahartchuk wrote:
Do you have your FFT configured for log output? Because the logarithm of zero is undefined.
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?
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historically been considerable differences between the X300 RFNOC radio blocks and those for E310.