UHD on USRP N210 + WBX

GNU Radio
1

Hi, all

I want to use UHD on USRP N210 + WBX.

case 1:

I try to use “uhd_fft.py”.

USRP2 (+ WBX) transmit signal by “benchmark_tx.py”,
and USRP N210 (+ WBX) receive signal by uhd_fft.py.
But N210 could not receive the signal.

case 2:

I try to use “share/uhd/examples/tx_samples_from_file”.

Exec this command.
$ sudo ./tx_samples_to_file --file /file-path --freq 477e6 --rate 1e6

But program finish after return this message

Error: RuntimeError:
Please update the firmware and FPGA images for your device.
See the application notes for USRP2/N-Series for instructions.
Expected FPGA compatibility number 7, but got 6:
The FPGA build is not compatible with the host code build.

I think that I use latest version.

BUT, I could use “share/uhd/examples/tx_waveforms”

When I try “tx_waveforms”, usrp2_fft.py on USRP2 receive signals.
I can see the signal on screen.

Why I could not use “tx_samples_from_file”??

case 3:

I think that “tx_samples_from_file” is transmit an unmodulated signal.
I want to transmit an modulated ( by gmsk, dqpsk, dbpsk) signal.

I want to use programs on USRP N210 + WBX,
that is similar to gnuradio/examples/digital/benchmark_tx/rx.py.

Does anyone have sample program??

Regards, youhei

2

On 09/16/2011 11:06 PM, [email protected] wrote:

USRP2 (+ WBX) transmit signal by “benchmark_tx.py”,
and USRP N210 (+ WBX) receive signal by uhd_fft.py.
But N210 could not receive the signal.

Is the correct antenna selected?

Can you verify the transmitted signal?

case 2:

I try to use “share/uhd/examples/tx_samples_from_file”.

Exec this command.
$ sudo ./tx_samples_to_file --file /file-path --freq 477e6 --rate 1e6

Why use sudo?

The FPGA does not match the library version.

BUT, I could use “share/uhd/examples/tx_waveforms”

You have multiple versions of libuhd. You should pick 1.

I think that “tx_samples_from_file” is transmit an unmodulated signal.
The file represents baseband samples.

I want to transmit an modulated ( by gmsk, dqpsk, dbpsk) signal.

Cool.

I want to use programs on USRP N210 + WBX,
that is similar to gnuradio/examples/digital/benchmark_tx/rx.py.

Does anyone have sample program??

There have been some uhd ports of benchmark example apps on the list.
Tom has the new official ones here, but i think you need to install his
gr-digital branch to use:

https://github.com/trondeau/gnuradio/tree/digital/gr-digital/examples

I highly recommend experimenting with gnuradio companion first.

-josh