[USRP-users] Problems duplicating rfnoc_rxtx.grc radios for two UBX-160's in an X310
martin.braun at ettus.com
Wed Jul 5 17:07:51 EDT 2017
On 06/27/2017 02:32 PM, Swanson, Craig via USRP-users wrote:
> I am able to successfully run the flowgraph from the
> gr-ettus/examples/rfnoc directory called rfnoc_rxtx.grc. This works
> great for a single UBX-160.
> But if I have two daughtercards, I am running into two problems:
> 1) It needs two dmafifos. How do I instantiate two dmafifos?
why do you need 2 DMA FIFOs? It has 2 channels after all.
> 2) I get errors where it seems to be unable to grab ddc_1 and duc_1. It
> errors out because it says ddc_0 and duc_0 are already connected.
Are you using multi_usrp API?
> This is all happening with the HG or XG version of usrp_x310_fpga_HG.bit
> or usrp_x310_fpga_RFNOC_HG.bit found in the images directory.
> GNU C++ version 5.4.0 20160609; Boost_105800;
> *Craig F. Swanson*
> */Research Engineer II
> */Information and Communications Laboratory/*
> */Communications, Systems, and Spectrum Division/*
> /Georgia Tech Research Institute/
> /Room 560
> 250 14th St NW
> /Atlanta, GA 30318/
> /Cell: 770.298.9156/
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