NO UHD devices found for E100

GNU Radio
1

(This message was also posted on USRP-users mailing list.)

I am trying to connect USRP E100 to my PC, ubuntu 14.04

But I am having a difficulty on finding uhd device.

The followings what I have done til now:

$ sudo ethtool eth0 # check if ethernet is gigabit
Settings for eth0:
    Supported ports: [ TP MII ]
    Supported link modes:   10baseT/Half 10baseT/Full
                            100baseT/Half 100baseT/Full
                            1000baseT/Half 1000baseT/Full
    Supported pause frame use: Symmetric Receive-only
    Supports auto-negotiation: Yes
    Advertised link modes:  10baseT/Half 10baseT/Full
                            100baseT/Half 100baseT/Full
                            1000baseT/Half 1000baseT/Full
    Advertised pause frame use: Symmetric Receive-only
    Advertised auto-negotiation: Yes
    Speed: 100Mb/s
    Duplex: Full
    Port: MII
    PHYAD: 1
    Transceiver: external
    Auto-negotiation: on
    Supports Wake-on: g
    Wake-on: g
    Current message level: 0x000000ff (255)
                   drv probe link timer ifdown ifup rx_err tx_err
    Link detected: yes

$ ifconfig # check if PC and E100 is in a network
eth0      Link encap:Ethernet  HWaddr 00:25:64:c2:16:be
          inet addr:192.168.10.1  Bcast:192.168.10.255

Mask:255.255.255.0
inet6 addr: fe80::225:64ff:fec2:16be/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:251 errors:0 dropped:0 overruns:0 frame:0
TX packets:1943 errors:4 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:254997 (254.9 KB) TX bytes:193482 (193.4 KB)
Interrupt:16

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:839 errors:0 dropped:0 overruns:0 frame:0
          TX packets:839 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:66205 (66.2 KB)  TX bytes:66205 (66.2 KB)

$ uhd_find_devices # check if there is USRP connected
linux; GNU C++ version 4.8.2; Boost_105400;

UHD_003.009.git-189-g6b64d9bb

NO UHD Devices Found

Could you suggest anything else what I haven’t done yet?

I use Cat 5 ethernet cable to connect USRP and PC (not sure it is 5e,
I’ll
check it.)

Regards,
Jeon.

2

Hi Jeon,

(This message was also posted on USRP-users mailing list.)
Ah! While I was writing my answer for that, this email came in.
Point is the same, gr-uhd on your PC can’t detect the E100 because it’s
not a peripheral (like e.g. the N200), but an embedded linux computer of
its own.

What I didn’t know in my reply was that you were planning to use GNU
Radio.
The good thing is: GNU Radio python flow graphs are perfectly portable,
so if you have a GNU Radio application that doesn’t need any custom C++
blocks, you can get away without cross-compiling software on your PC for
the E100, but will just have to copy over the python files to your E100.

Best regards,
Marcus

3

Hi Jeon,

In my case, my OOT module use IT++ (for convolutional code) and
ezpwd-reed-solomon
Isn’t it the case that I can port it easily?
Since the E100 runs a “normal” linux, yes, it should be relatively easy.

And is there no way to use E100 as a peripheral? But only to use it as
an embedded machine?
No, no way. You can of course use something like a network sink in GNU
Radio, but that won’t be fun (100Mbit/s means even for 8 bit samples
5MS/s max, and that’s more than the CPU on the E100 can feed from the
Radio to the network).

Then, I have to consider using USRP 1 or N200. I have both :slight_smile:
Use the N200. It’s the right device for that job!

Best regards,
Marcus

4

Thanks Marcus :slight_smile:

2015-06-25 16:42 GMT+09:00 Marcus Müller [email protected]:

5

hello,
I have recently got my hands on an old usrp (e100). I cant find much about it looking online .So far I have two questions.

What does the three usb ports do? (usb ports are -console,otg and host)
how to install usrp e100 drivers and configure e100 in gnu radio.