Hello,
I am getting started with an Ettus E320 on Ubuntu and am having some issues
communicating over the streaming port that I have been unable to solve. Based
on what I'm seeing, I believe it has something to do with my PCs network
settings because I can communicate with one port at a time without any problems.
My current setup is a PC with one Ethernet connection on the motherboard and a
separate WiFi PCIe card. I connected the E320's RJ45 port to my WiFi router
and the Ethernet connection is connected to the RJ45-to-SFP adapter on the
E320's SFP+ port. I am able to ssh into the E320 and run the example programs
on there, but when I try to run uhd_find_devices or uhd_usrp_probe on my PC,
there are issues. I am running UHD 3.15 on both my PC and the E320. I will
separate what I think is relevant information with lines of equal signs for
readability =========
=====================================================================
The ifconfig -a info for my PC:
ifconfig -a
enp30s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.10.1 netmask 0.0.0.0 broadcast 255.255.255.255
inet6 fe80::93f1:af0c:251:4642 prefixlen 64 scopeid 0x20<link>
ether b0:6e:bf:c1:18:57 txqueuelen 1000 (Ethernet)
RX packets 53 bytes 5865 (5.8 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 180 bytes 26338 (26.3 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device memory 0xf7600000-f761ffff
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 2019 bytes 203709 (203.7 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2019 bytes 203709 (203.7 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlp37s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.20 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 fe80::44e4:2e51:6e8f:9d35 prefixlen 64 scopeid 0x20<link>
ether 60:f6:77:96:f6:8b txqueuelen 1000 (Ethernet)
RX packets 111178 bytes 146464516 (146.4 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 51515 bytes 21064148 (21.0 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
===================================================================
The ifconfig -a on the E320 is:
eth0 Link encap:Ethernet HWaddr 00:80:2F:28:B9:3E
inet addr:192.168.1.18 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:10667 errors:0 dropped:114 overruns:0 frame:0
TX packets:3142 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:14041114 (13.3 MiB) TX bytes:233123 (227.6 KiB)
Interrupt:27 Base address:0xb000
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:23 errors:0 dropped:0 overruns:0 frame:0
TX packets:23 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2337 (2.2 KiB) TX bytes:2337 (2.2 KiB)
sfp0 Link encap:Ethernet HWaddr 00:80:2F:28:B9:3F
inet addr:192.168.10.2 Bcast:192.168.10.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:38 errors:0 dropped:3 overruns:0 frame:0
TX packets:51 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:4118 (4.0 KiB) TX bytes:5475 (5.3 KiB)
==================================================================
If I try to ping the SFP port just using the 'ping' command, it does not work
ping -c 4 192.168.10.2
PING 192.168.10.2 (192.168.10.2) 56(84) bytes of data.
--- 192.168.10.2 ping statistics ---
4 packets transmitted, 0 received, 100% packet loss, time 3063ms
==================================================================
But if I force it to use the hardwaired interface, ping works fine.
ping -I enp30s0 -c 4 192.168.10.2
PING 192.168.10.2 (192.168.10.2) from 192.168.10.1 enp30s0: 56(84) bytes of
data.
64 bytes from 192.168.10.2: icmp_seq=1 ttl=64 time=1.43 ms
64 bytes from 192.168.10.2: icmp_seq=2 ttl=64 time=1.44 ms
64 bytes from 192.168.10.2: icmp_seq=3 ttl=64 time=1.42 ms
64 bytes from 192.168.10.2: icmp_seq=4 ttl=64 time=0.961 ms
--- 192.168.10.2 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3005ms
rtt min/avg/max/mdev = 0.961/1.312/1.443/0.203 ms
====================================================================
If I run uhd_find_devices, my PC can see the E320, but it is listed as
"reachable: no".
~$ uhd_find_devices
[INFO] [UHD] linux; GNU C++ version 9.3.0; Boost_107100;
UHD_3.15.0.HEAD-0-gaea0e2de
-- UHD Device 0
Device Address:
serial: 31BEE1C
claimed: False
mgmt_addr: 192.168.1.18
product: e320
reachable: No
type: e3xx
===========================================================================
If I run uhd_usrp_probe with "addr=192.168.1.18" it cannot detect a transport
option
uhd_usrp_probe --args "addr=192.168.1.18"
[INFO] [UHD] linux; GNU C++ version 9.3.0; Boost_107100;
UHD_3.15.0.HEAD-0-gaea0e2de
[INFO] [MPMD] Initializing 1 device(s) in parallel with args:
mgmt_addr=192.168.1.18,type=e3xx,product=e320,serial=31BEE1C,claimed=False,addr=192.168.1.18
[INFO] [MPM.PeriphManager] init() called with device args
`mgmt_addr=192.168.1.18,product=e320'.
[ERROR] [MPMD] Failure during block enumeration: : Could not select a transport
option! Either a transport hint was not specified or the specified hint does
not support communication with RFNoC blocks.
Error: RuntimeError: Failed to run enumerate_rfnoc_blocks()
===========================================================================
If I run uhd_usrp_probe with "addr=192.168.10.2" it can't find the device:
uhd_usrp_probe --args "addr=192.168.10.2"
[INFO] [UHD] linux; GNU C++ version 9.3.0; Boost_107100;
UHD_3.15.0.HEAD-0-gaea0e2de
Error: LookupError: KeyError: No devices found for ----->
Device Address:
addr: 192.168.10.2
==========================================================================
The uhd_config_info on the my PC and the E320:
uhd_config_info --version
UHD 3.15.0.HEAD-0-gaea0e2de
ssh root@192.168.1.18
root@ni-e320-31BEE1C:~# uhd_config_info --version
UHD 3.15.0.0-0-gaea0e2de
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