I've got a single input, 4-output RFNoC block that I am trying to hook up to a C++ testbench, but I'm having some trouble.
Referencing the unaligned output version from gr-ettus: https://github.com/EttusResearch/gr-ettus/blob/master/lib/rfnoc_block_impl.cc My graph is Radio -> DDC -> Custom Block -> Host. I am setting up my device_addr_t with 3 attributes: block_id, block_port, and block_portX where X is from 0 to 3. When I print my args I am sending into get_rx_stream(), they look appropriate: block_id=0/MYBLOCK_0,block_port=0,block_port0=0 The issue is when I get to block port 2, I get a LookupError about 0/Radio_0: Error: LookupError: KeyError: [0/Radio_0] sr_write(): No such port: 2 I'm sure I'm just doing something incorrectly, but I can't find much documentation on getting the streams working with multiple unaligned output ports from the same block coming back to the host. I'm very confused why port 2 of the Radio is being addressed? I've used the noc_block_invert_tb as my guide to produce the streams in the FPGA: https://github.com/EttusResearch/fpga/tree/rfnoc-devel/usrp3/lib/rfnoc/noc_block_invert_tb And an HDL testbench appears to work correctly. Host UHD guidance is appreciated. It would be nice to see real example C++ code interacting with UHD directly with the stock FPGA image. I believe fosphor has 2 output ports and 1 input port? Thanks, Brian
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