When I run my flowgraph with the addresses setup that worked before twinrx, it
starts to set everything up and seems to be talking to both ip addresses. Then
it craps out here:
[WARNING] [RFNOC] Assuming max packet size for 0/DDC_0
[WARNING] [RFNOC] Assuming max packet size for 0/DDC_1
[WARNING] [RFNOC] Assuming max packet size for 1/DDC_1
[WARNING] [RFNOC] Assuming max packet size for 1/DDC_0
Traceback (most recent call last):
File "/opt/gnuradio/rfnoc/src/gr-ettus/examples/rfnoc/rfnoc_fosphor.py", line
644, in <module>
main()
File "/opt/gnuradio/rfnoc/src/gr-ettus/examples/rfnoc/rfnoc_fosphor.py", line
632, in main
tb = top_block_cls()
File "/opt/gnuradio/rfnoc/src/gr-ettus/examples/rfnoc/rfnoc_fosphor.py", line
475, in __init__
self.device3.connect(self.uhd_rfnoc_streamer_fft_0_0_0.get_block_id(), 0,
self.uhd_rfnoc_streamer_fosphor_1.get_block_id(), 0)
File "/opt/gnuradio/rfnoc/lib64/python2.7/site-packages/ettus/ettus_swig.py",
line 1264, in connect
return _ettus_swig.device3_sptr_connect(self, *args)
RuntimeError: RuntimeError: On node 1/fosphor_1, input port 0 is already
connected.
>>> Done
That error at the end is usually what you see when you try to use a single
block twice without setting up the block select value. I have checked things
about 50 times, and I have everything setup right as device 1 and 2, and the
blocks (I started with a working flowgraph for non TwinRX X310s), but I keep
getting that error.
If feels like there is a UHD issue that when it is trying to setup which block
goes with which device, it thinks that there is only one device....
________________________________
From: Rob Kossler <[email protected]>
Sent: Friday, February 1, 2019 1:14 PM
To: Jason Matusiak
Cc: Ettus Mail List
Subject: Re: [USRP-users] two X310s in one RFNoC flowgraph
How is it failing?
On Fri, Feb 1, 2019 at 1:11 PM Jason Matusiak
<[email protected]<mailto:[email protected]>> wrote:
Yep, works fine. When I am doing it in companion, it also reports info on both
boxes while setting it up, but it feels like it only tries to talk to the first
one it sees.
________________________________
From: Rob Kossler <[email protected]<mailto:[email protected]>>
Sent: Friday, February 1, 2019 1:08 PM
To: Jason Matusiak
Cc: Ettus Mail List
Subject: Re: [USRP-users] two X310s in one RFNoC flowgraph
Perhaps run uhd_usrp_probe with --args="addr0=192.168.30.2,addr1=192.168.40.2"
and make sure that it is happy and shows you all of the blocks.
Rob
On Fri, Feb 1, 2019 at 12:17 PM Jason Matusiak
<[email protected]<mailto:[email protected]>> wrote:
Upon further review, even though this worked, it doesn't seem to work for dual
X310s with TwinRXs in it. Anyone have any multi-usrp advice with that (since I
pretty much no experience with TwinRX)? I figure there might be a clue that
there could help me with the rfnoc side of things.
________________________________
From: Jason Matusiak
Sent: Friday, February 1, 2019 9:43 AM
To: Rob Kossler
Cc: Ettus Mail List
Subject: Re: [USRP-users] two X310s in one RFNoC flowgraph
Rob,
I just figured it out (I found lots of people asking the question, but no
answers, so hopefully this can help someone else).
1st - Set the "device select" option to 0 and 1 for the different X310s
(usually you leave it at -1, but change the block select, but here we need to
mod it).
2nd - you need a single Device3 like usual
3rd - under the Device Arguments block, add in your two IP addresses using the
key of addr0 and addr1 like this: "addr0=192.168.30.2, addr1=192.168.40.2" (I
tried it both with and without the quotes and it works fine either way),
Now, Device 0 will get associated with addr0, and device 1 will get associates
with addr1.
I hope that makes sense and helps someone.
________________________________
From: Rob Kossler <[email protected]<mailto:[email protected]>>
Sent: Friday, February 1, 2019 9:23 AM
To: Jason Matusiak
Cc: Ettus Mail List
Subject: Re: [USRP-users] two X310s in one RFNoC flowgraph
Hi Jason,
Given that under the hood, the stock multi_usrp (along with legacy_compat)
implements an RFNoC graph, it must be possible. I have run multiple X310s with
the stock multi_usrp. I have looked at legacy_compat pretty thoroughly and it
keeps track of blocks as a function of device number (motherboard). If I had a
2nd X310 handy, I would try it with my own non-stock multi_usrp object, but I
don't - sorry.
Rob
On Fri, Feb 1, 2019 at 8:30 AM Jason Matusiak via USRP-users
<[email protected]<mailto:[email protected]>> wrote:
Is it possible to have a single flowgraph that has 2 X310s running RFNoC in it?
I can't seem to figure out a way to make it work, though I think there must be
a way. Both streams would be streaming to the same host machine for processing.
Thanks.
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