[USRP-users] rx_sample_to_file not working with --args =

john okai gsmandvoip at gmail.com
Wed Oct 1 06:17:53 EDT 2014

Hi list,
when I am trying to run rx_samples_to_file, with following command:
./rx_samples_to_file --args="fpga=usrp1_fpga_4rx.rbf" --freq "945000000"
--rate="8000000" $FILE --nsamps 
getting following error:

UHD Warning:
    Unable to set the thread priority. Performance may be negatively affected.
    Please see the general application notes in the manual for instructions.
    EnvironmentError: OSError: error in pthread_setschedparam

Creating the usrp device with: fpga=usrp1_fpga_4rx.rbf...
-- Loading firmware image: /usr/share/uhd/images/usrp1_fw.ihx... done
-- Opening a USRP1 device...
-- Loading FPGA image: /usr/share/uhd/images/usrp1_fpga_4rx.rbf... done
-- Using FPGA clock rate of 52.000000MHz...
Error: LookupError: IndexError: multi_usrp::get_tx_subdev_spec(0) failed to
make default spec - ValueError: The subdevice specification "A:0" is too long.
The user specified 1 channels, but there are only 0 tx dsps on mboard 0.

Can any body throw some light, what mistake I am doing.
I am using ubuntu 14.04, 32 bit, gnuradio, 3.7, uhd driver latest installation

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