Hi Jonathon, Thank you for the answer. For complex multiplier IP, I have already looked at it and used it as a reference point for my DDS IP. I have changed complex multiplier IP files with DDS IP files and implemented it. That's how I generated my bitstream. For Cpp file rfnoc_siggen_example.cpp is what I was looking for. I changed my cpp code according to the siggen example. After that, I tried it on E320. The Error message is gone now, but the signal is still not generated. I expect at least a red light on TX/RX channel even if my DDS Block doesn't work properly, but this is not the case. There is no light on Radio channels. I don't know if this is because of my DDS block or because of the CPP file. I will try to make some changes on Verilog and generate new bitstream. After that, I will post the results here.
While doing that, I will be glad for any more help. Sorry for the late answer, there is a 10 hours time zone difference between where I live and the US. Kind regards, Yasir Jonathon Pendlum <[email protected]>, 8 Ağu 2022 Pzt, 19:29 tarihinde şunu yazdı: > Hi Yasir, > > I suggest taking a look at this example using the Siggen block: > https://github.com/EttusResearch/rfnoc-apps/blob/testing/master/apps/rfnoc_siggen_example.cpp. > As for adding IP, rfnoc-example has an example using a complex multiplier: > https://github.com/EttusResearch/uhd/tree/master/host/examples/rfnoc-example/fpga/ip/. > I also suggest updating your E320 and Host UHD version to 4.2 as there have > been several bug fixes since UHD 4.0. > > Jonathon > > > On Mon, Aug 8, 2022 at 2:50 AM Yasir Özçalık <[email protected]> > wrote: > >> Hi everyone, >> >> I have a E320 device and I am trying to learn how to build my own >> custom IPs. The thing is that the IPs which were implemented by Ettus were >> not enough for me. Therefore; I need to build my own custom IPs. I have all >> the HDL codes that I need to build on E320, but I am having a problem with >> E320 development flow. >> >> To learn how to add my custom IPs, I have analyzed the Rfnoc-example in >> the uhd repository. In that example, they showed basic Gain IP (which uses >> multiply IP). Firstly, I have synthesized and implemented that example. >> After that, I loaded the bit file into USRP and tested it >> with a init_gain_block C++ file. I tried to write a value to register and >> read back from the same register. It worked fine. I also changed the >> default UHD C++ code and wrote a basic UHD C++ code to amplify a signal by >> looking at example UHD C++ codes. That worked fine, too. The Signal given >> from ADC is amplified and given back to DAC. After that I changed the >> multiply IP with DDS IP and tried to build it to generate a signal. The >> thing is that I implemented it successfully and the bit file was generated, >> but it did not work after loading it into the device. >> >> There are 2 problems: >> 1 -) Since all the example UHD C++ codes are meant to transfer data >> between host and device, I do not know how to make it work. Because, my DDS >> IP does not need to transfer data between host and device. I just need to >> write a frequency value to register and DDS will generate a signal. After >> that, I expect it to work fine. To do that, in UHD C++ code I have used >> rfnoc_graph and connected my block with the DUC block. Also I connected the >> DUC block with the Radio block. I expect this to work seamlessly, but it >> did not. I could not figure out how to write a C++ code to make this work. >> The code gives an error which is "[ERROR] [RFNOC::GRAPH] Caught exception >> while initializing graph: Environment Error: IOError: Timed out getting >> recv buff for management transaction" >> >> 2 -) While building DDS IP, I have opened a Vivado 2019.1 and generated a >> DDS IP. Then, I used the .xci file in uhd. I do not know if this is the >> right way, but UHD gives no error while implementing it. >> >> >> >> USRP Device :E320 >> UHD Version : 4.0.0.0 >> Host OS : Ubuntu 20.04.4 >> >> Kind Regards, >> Yasir >> >> >> >> _______________________________________________ >> USRP-users mailing list -- [email protected] >> To unsubscribe send an email to [email protected] >> >
_______________________________________________ USRP-users mailing list -- [email protected] To unsubscribe send an email to [email protected]
