Matlab and USRP N210 configuration problems

Dear all,

I am trying to use USRP N210 with Matlab, but I am facing an error. The Matlab version that I am using is R2022a, the OS is Debian 11.

I have configured the ethernet port, giving the IP address: 192.168.10.1/24. The IP address of the USRP N210 is 192.168.10.23.

I can ping the USRP and when I run the command: "findsdru" in the command window I get the following result:

Platform: 'N200/N210/USRP2'

IPAddress: '192.168.10.23'

SerialNum: 'E9R20P5UP'

Status: 'Success'

However, once I try to run my code, or even the QPSK example provided by Matlab I get the following error:

Error using comm.SDRuTransmitter/setupImplLocal

Radio with IP address '192.168.10.2' is not of the specified platform 'N200/N210/USRP2'.

Error in comm.internal.SDRuBase/setupImpl

Can anyone help me please?

[Walter Roberson]

The easiest way might be to configure the radio to 192.168.10.2 instead of 192.168.10.23

[Giti Dimrov]

But I want to connect two USRPs N210 (tx and rx ) with my PC using a switch. I use the following syntax for allocating the USRPs:

Tx:

connectedRadios = findsdru

if strncmp(connectedRadios(1).Status, 'Success', 7)

platform = connectedRadios(1).Platform

address = connectedRadios(1).IPAddress

end

Rx:

connectedRadios = findsdru

if strncmp(connectedRadios(2).Status, 'Success', 7)

platform = connectedRadios(2).Platform

address = connectedRadios(2).IPAddress

end

[Walter Roberson]

The example at https://www.mathworks.com/help/supportpkg/usrpradio/ug/qpsk-transmitter-with-usrp-tm-hardware.html has

connectedRadios = findsdru;
if strncmp(connectedRadios(1).Status, 'Success', 7)
  platform = connectedRadios(1).Platform;
  switch connectedRadios(1).Platform
    case {'B200','B210'}
      address = connectedRadios(1).SerialNum;
    case {'N200/N210/USRP2','X300','X310','N300','N310','N320/N321'}
      address = connectedRadios(1).IPAddress;
  end
else
  address = '192.168.10.2';
  platform = 'N200/N210/USRP2';
end

I would suggest you step through that, and seeing if you get to the platform assignment, and if so what Platform shows up.

[Giti Dimrov]

I have checked the given QPSK example. Even if I try to connect only one USRP and run only the transmitter code, again I face the same error

[Walter Roberson]

When you use that section of code, does it return a valid address or does it fail over to assigning the .2 address?

[Giti Dimrov]

The address = connectedRadios.IPAddress return the right IP addresses in both cases, and afterwards it throws the error

[Walter Roberson]

What is your current code, the one that is recognizing the ip address but failing soon after?

[Giti Dimrov]

yes, the following one

Platform: 'N200/N210/USRP2'

IPAddress: '192.168.10.23'

SerialNum: 'E9R20P5UP'

Status: 'Success'

Once I try to run my code, or even the QPSK example provided by Matlab I get the following error:

Error using comm.SDRuTransmitter/setupImplLocal

Radio with IP address '192.168.10.2' is not of the specified platform 'N200/N210/USRP2'.

Error in comm.internal.SDRuBase/setupImpl

[Walter Roberson]

You should use the debugger and "dbstop if error" to find out where in the example it is failing, and then trace back from there to figure out how the address is getting assigned.

[Pooja Kumari]

You must be facing issue as the usrp is not used and it was going in else condition and specifying the IP. address as '192.168.10.2'. So, you are getting this error.