You can use multiple usrps on one PC. To select the USRP that you want
to use, you can use the which parameter of the usrp source
constructor:
src = "">
This is a number between 0..N.
You can identify which is which by looking at the serial number of your usrps:
src.serial_number()
These might not be exposed in GRC, so you need to edit this in the python code.
Also, you can transmit and receive simultaneously also with just one usrp.
I have two usrps on one machine in continuous operation. One usrp is
using the computer's usb bus, and the other is hooked to a PCI usb
card, to ensure full bandwidth on both usrps. But unless you need full
bandwidth on each device, you probably don't need to do this.
juha
On Fri, Oct 29, 2010 at 07:04, songsong gee <
address@hidden> wrote:
> I am testing RX TX example with 2 USRPs.
>
> but now I have to just 1 PC.
>
> When I connect 2 USRPs on 1 PC, my device list is like this:
>
>> ls -lR /dev/bus/usb
>
> /dev/bus/usb/001:
> total 0
> crw-rw-r-- 1 root root 189, 0 2010-10-29 15:48 001
> crw-rw---- 1 root usrp 189, 1 2010-10-29 15:59 002
> crw-rw---- 1 root usrp 189, 2 2010-10-29 16:00 003
>
> I just want to use one as a USRP sink and the other as a USRP source, in
> GRC.
>
> How can I solve this problem?
>
> I know, 2 PC is better... but.. :(
>
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