Hello Arjan,
This is a known issue and a fix for it should be released in the next few
weeks on the UHD master branch. Another option is to revert to UHD 3.15
until the fix is released.
Jonathon
On Sat, May 29, 2021 at 11:08 AM <arjan.f...@unifi.it> wrote:
> Hi all, I'm trying to build an RFNoC graph (x300 with a TwinRX radio
> module):
>
> import uhd
>
> graph = uhd.rfnoc.RfnocGraph("addr=192.168.10.2")
>
> sa = uhd.usrp.StreamArgs("fc32", "sc16")
>
> rx_streamer0 = graph.create_rx_streamer(1, sa)
> rx_streamer1 = graph.create_rx_streamer(1, sa)
>
> graph.connect("0/Radio#0", 0, "0/DDC#0", 0, False)
> graph.connect("0/Radio#0", 1, "0/DDC#0", 1, False)
>
> graph.connect("0/DDC#0", 0, rx_streamer0, 0)
> graph.connect("0/DDC#0", 1, rx_streamer1, 0)
>
> graph.commit()
>
> after the “*graph.commit()*” instruction, it the code complains with the
> following error message:
>
> [ERROR] [RFNOC::GRAPH::DETAIL] 0/DDC#0: RfnocError: ResolveError:
> Attempting to overwrite property `mtu@INPUT_EDGE:1' with a new value after it
> was locked!
>
> Traceback (most recent call last):
>
> File "script2.py", line 62, in <module>
>
> graph.commit()
> RuntimeError: RfnocError: ResolveError: Attempting to overwrite property
> `mtu@INPUT_EDGE:1' with a new value after it was locked!
>
> Does anyone have any experience or any hints in creating an rfnoc graph
> using the UHD python API?
>
> Best regads,
>
> Arjan Feta
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