> > I mixed the files
Context: I sent Ivan my FPGA and FW compilation. My FW didn't work, so I recommended "mixing" the images - taking my FPGA and stock FW. the carriers as they were and remained Do I see correctly that previously you had spikes at DC (-60..-58 dBm) _and_ at some other frequencies (-50..-42 dBm) and now you have only DC spikes (~-40 dBm)? Sorry, it's not very easy to me to read it from the plots. Was this change a result "sewing" or the FPGA image change? It would be helpful to see the effect of each of these actions separately. 2017-11-16 12:10 GMT+01:00 Ivan Zahartchuk <adray0...@gmail.com>: > I mixed the files and the card was sewn but the carriers as they were and > remained. > > 2017-11-16 12:30 GMT+02:00 Michał Wróbel <michal.a.wro...@gmail.com>: > >> Hey Derek, >> >> >> Hi Ivan, it's Michał here. ;-) >> >> uhd_image_loader --args="type=usrp2,addr=192.168.10.2,overwrite-safe" >> >> >> DON'T use "overwrite-safe" here! It's only for unbricking the device. If >> the firmware I sent you is incorrect - it might do the opposite - *brick* >> the firmware, so that you'll have to use a JTAG to recover it afterwards >> (BTW. do you have it, just in case?) >> >> Just use --args="type=usrp2,addr=192.168.10.2" as described in the "Load >> the Images onto the On-board Flash (USRP-N Series only)" / "Use the image >> loader" section (not the one in "Unbricking an N-Series Device"). >> >> Regarding the "The file at path (...) is not a valid firmware image" >> error - indeed the firmware file I sent you is not compatible with >> uhd_image_loader. I'll check that later (maybe today evening). >> >> In the meantime I think you might try to mix stock FW image (i.e. from >> uhd-images package) with my FPGA image. Let me know if that works for you. >> >> Best, >> Michał >> >> 2017-11-16 8:31 GMT+01:00 Ivan Zahartchuk <adray0...@gmail.com>: >> >>> Hey Derek, >>> when the board was flashed, I got an error: >>> >>> uhd_image_loader --args="type=usrp2,addr=192.168.10.2,overwrite-safe" >>> --fw-path=usrp_n210_fw1.bin --fpga-path=usrp_n210_r4_fpga1.bin >>> linux; GNU C++ version 4.8.4; Boost_105400; >>> UHD_003.010.002.heads-release_003_010_002_000-0-gbd6e21dc >>> >>> Unit: USRP N210 r4 (311D7A1, 192.168.10.2) >>> Error: RuntimeError: The file at path "/home/suppression/usrp_n210_fw1.bin" >>> is not a valid firmware image. >>> >>> Best regards, >>> Ivan >>> >>> 2017-11-15 22:12 GMT+02:00 Michał Wróbel <michal.a.wro...@gmail.com>: >>> >>>> Hey Ivan, >>>> >>>> I compiled the firmware for you. I assumed that you are using USRP N210 >>>> R4. See the attachment. As said before - I didn't check it as I have no >>>> such hardware - it might completely not work (i.e. not even boot up). Let >>>> me know if it works. >>>> >>>> Best, >>>> Michał >>>> >>>> 2017-11-15 18:12 GMT+01:00 Ivan Zahartchuk <adray0...@gmail.com>: >>>> >>>>> Hi again. >>>>> >>>>> I've tried everything described in the article you're refering to. I'd >>>>> be extremely grateful if you could try to compile FPGA bitstream for USRP >>>>> N210 and send it to me. >>>>> >>>>> Best regards, >>>>> Ivan >>>>> >>>>> 2017-11-15 17:21 GMT+02:00 Michał Wróbel <michal.a.wro...@gmail.com>: >>>>> >>>>>> Hey Ivan, >>>>>> >>>>>> if the problem with the spikes is what I think it is, you'll need a >>>>>> new build of the FPGA bitstream. I can try to compile one with the most >>>>>> fresh version from GitHub, but as I don't have USRP N210 (I only own >>>>>> USRP2), I have no way to confirm that it works properly before I will >>>>>> send >>>>>> it to you. Have you ever flashed your USRP (i.e. like described here >>>>>> <https://files.ettus.com/manual/page_usrp2.html#usrp2_loadflash>)? >>>>>> >>>>>> Also, Derek Kozel's has some other really good advice about spectrum >>>>>> flatness, device calibration, etc. You should definitely try that too. >>>>>> >>>>>> Best, >>>>>> Michał >>>>>> >>>>>> >>>>>> 2017-11-15 14:51 GMT+01:00 Ivan Zahartchuk <adray0...@gmail.com>: >>>>>> >>>>>>> Tell me how to fix this problem. I'm not very versed in the FPGA >>>>>>> >>>>>>> 2017-11-15 15:51 GMT+02:00 Ivan Zahartchuk <adray0...@gmail.com>: >>>>>>> >>>>>>>> Tell me how to fix this problem. I'm not very versed in the FIG. >>>>>>>> >>>>>>>> 2017-11-15 15:39 GMT+02:00 Michał Wróbel <michal.a.wro...@gmail.com >>>>>>>> >: >>>>>>>> >>>>>>>>> Hi Ivan, >>>>>>>>> >>>>>>>>> these spikes look similar to what I am experiencing with my >>>>>>>>> USRP2+WBX and what seems to be already fixed in the GitHub repository: >>>>>>>>> >>>>>>>>> https://github.com/EttusResearch/fpga/pull/4 >>>>>>>>> >>>>>>>>> I have asked about that just yesterday: >>>>>>>>> >>>>>>>>> http://lists.ettus.com/pipermail/usrp-users_lists.ettus.com/ >>>>>>>>> 2017-November/027054.html >>>>>>>>> >>>>>>>>> Best regards, >>>>>>>>> Michał >>>>>>>>> >>>>>>>>> 2017-11-15 14:26 GMT+01:00 Ivan Zahartchuk via USRP-users < >>>>>>>>> usrp-users@lists.ettus.com>: >>>>>>>>> >>>>>>>>>> Hello. I'm trying to make a broadband spectrum analyzer. I >>>>>>>>>> encountered some difficulties with the USRP N210 board. At >>>>>>>>>> certain frequencies, I get such a picture. And there are >>>>>>>>>> problems with the presence of central frequencies. Advise me how >>>>>>>>>> to remove these shortcomings. >>>>>>>>>> My code: >>>>>>>>>> >>>>>>>>>> n = int(math.ceil((config.stop_freq - config.start_freq) / >>>>>>>>>> config.band)) >>>>>>>>>> fft1 = np.array([], dtype=np.complex64) >>>>>>>>>> for i in range(0, n): >>>>>>>>>> usrp.set_rx_freq(lib.types.tune_request(config.start_freq + >>>>>>>>>> config.band / 2 + config.band * i), 0) >>>>>>>>>> streamer.recv(recv_buff, config.metadata) >>>>>>>>>> if config.metadata.error_code == >>>>>>>>>> lib.types.rx_metadata_error_code.timeout: >>>>>>>>>> print ("ERRROR") >>>>>>>>>> elif config.metadata.error_code == >>>>>>>>>> lib.types.rx_metadata_error_code.late: >>>>>>>>>> print ("ERR1") >>>>>>>>>> elif config.metadata.error_code == >>>>>>>>>> lib.types.rx_metadata_error_code.broken_chain: >>>>>>>>>> print ("ERR2") >>>>>>>>>> elif config.metadata.error_code == >>>>>>>>>> lib.types.rx_metadata_error_code.overflow: >>>>>>>>>> print ("ERR3") >>>>>>>>>> elif config.metadata.error_code == >>>>>>>>>> lib.types.rx_metadata_error_code.alignment: >>>>>>>>>> print ("ERR4") >>>>>>>>>> elif config.metadata.error_code == >>>>>>>>>> lib.types.rx_metadata_error_code.bad_packet: >>>>>>>>>> print ("ERR5") >>>>>>>>>> >>>>>>>>>> prom1 = np.fft.fft(recv_buff) >>>>>>>>>> prom1[0:5] = 0 >>>>>>>>>> prom1[num_samps-5:num_samps] = 0 >>>>>>>>>> prom1= np.fft.fftshift(prom1)*w >>>>>>>>>> fft1 = np.hstack((fft1,prom1)) >>>>>>>>>> >>>>>>>>>> stream_cmd.time_spec = lib.types.time_spec(0) >>>>>>>>>> streamer.issue_stream_cmd(stream_cmd) >>>>>>>>>> >>>>>>>>>> dbm = np.array(10 * np.log10(np.abs(fft1)) - 60) >>>>>>>>>> >>>>>>>>>> return >>>>>>>>>> dbm,config.start_freq+(config.band/num_samps)*np.arange(dbm.size) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> _______________________________________________ >>>>>>>>>> USRP-users mailing list >>>>>>>>>> USRP-users@lists.ettus.com >>>>>>>>>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ett >>>>>>>>>> us.com >>>>>>>>>> >>>>>>>>>> >>>>>>>>> >>>>>>>> >>>>>>> >>>>>> >>>>> >>>> >>> >> >
_______________________________________________ USRP-users mailing list USRP-users@lists.ettus.com http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
