Re: [Discuss-gnuradio] NO UHD devices found for E100

Thanks Marcus :)

2015-06-25 16:42 GMT+09:00 Marcus Müller <marcus.mueller@ettus.com>:

Hi Jeon,

In my case, my OOT module use IT++ (for convolutional code) and [ezpwd-reed-solomon](https://github.com/pjkundert/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 :)

Use the N200. It's the right device for that job!

Best regards,
Marcus

On 06/25/2015 09:26 AM, Jeon wrote:

Dear Marcus,

Thanks for reply.

In my case, my OOT module use IT++ (for convolutional code) and [ezpwd-reed-solomon](https://github.com/pjkundert/ezpwd-reed-solomon) Isn't it the case that I can port it easily?

And is there no way to use E100 as a peripheral? But only to use it as an embedded machine?

Then, I have to consider using USRP 1 or N200. I have both :)

Regards,

Jeon.

2015-06-25 15:33 GMT+09:00 Marcus Müller <marcus.mueller@ettus.com>:

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

On 06/25/2015 08:25 AM, Jeon wrote:

(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.

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