wow, thanks Daniel! I just bumped an issue on the GNURadio github here <https://github.com/gnuradio/gnuradio/issues/5104> I've cross-linked my comments to gr-ATA as well.
<https://github.com/gnuradio/gnuradio/issues/5104> the python code i'm using to enable the LO distro in the UHD python API is: import uhd import numpy as np usrp = uhd.usrp.MultiUSRP() usrp.get_tree().access_bool("/blocks/0/Radio#0/dboard/tx_frontends/0/los/lo1/lo_distribution/LO_OUT_0/export").set(True) usrp.get_tree().access_bool("/blocks/0/Radio#0/dboard/tx_frontends/0/los/lo1/lo_distribution/LO_OUT_1/export").set(True) usrp.get_tree().access_bool("/blocks/0/Radio#0/dboard/tx_frontends/0/los/lo1/lo_distribution/LO_OUT_2/export").set(True) i'm not sure how to work that into a python snippet yet as I think gr-uhd will claim the radio once the graph is started. On Tue, Jan 18, 2022 at 3:58 PM Daniel Estévez <dan...@destevez.net> wrote: > El 18/1/22 a las 6:02, Marcus D. Leech escribió: > > On 2022-01-17 23:34, Paul Atreides wrote: > >> Posting on both GNURadio and USRP lists here, since my application > >> overlaps both gr-uhd/GNURadio and the UHD API. > >> The top-level question is, can gr-uhd support all the necessary > >> N321-specific commands necessary to export the TX LO from RF0 to RF1? > >> That would include running the command to set the 1x4 splitter. That's > >> the one in question. > >> > >> > get_device()->get_tree()->access<bool>("mboards/0/dboards/A/tx_frontends/0/los/lo1/lo_distribution/LO_OUT_0/export").set(true) > > >> > >> > >> If not, Marcus suggested using a python snippet. I've used that with > >> RFNoC before, but how would that work? > >> I'm guessing it would be an "after-init" and then call the python API > >> for the above (if that command is supported)? > >> > >> Thanks > >> > > Yeah, I'd say "after-init", and have it grab the object name of the usrp > > object? Using Pythonic, rather than C++ syntax? > > Hi, > > In case it helps, in the GNU Radio testbed at the ATA > (https://wiki.gnuradio.org/index.php/GR-ATA_Testbed) > we're using > > self.uhd_usrp_source_0.set_lo_export_enabled(True, "lo1", 0) > self.uhd_usrp_source_0.set_rx_lo_dist(True, "LO_OUT_0") > self.uhd_usrp_source_0.set_rx_lo_dist(True, "LO_OUT_1") > self.uhd_usrp_source_0.set_lo_source("external", "lo1", 0) > self.uhd_usrp_source_0.set_lo_source("external", "lo1", 1) > self.uhd_usrp_source_0.set_lo_source("external", "lo1", 2) > self.uhd_usrp_source_0.set_lo_source("external", "lo1", 3) > > in a "Main - after init" Python snippet together with these patches: > > > https://github.com/daniestevez/uhd/commit/0a6da1a3fd5839b862cac740ed702923ed21b096 > > > https://github.com/daniestevez/gnuradio/commit/f9909bade86045f379f83001de27317cc261807f > > If someone gets the 1x4 splitter going directly in Python, I would be > interested in knowing how it's done, since that would save us from > having to patch UHD and GNU Radio. > > Best, > Daniel. >
