bionic (1) bladeRF-cli.1.gz

Provided by: bladerf_0.2016.06-2_amd64 bug

NAME

       bladeRF-cli - command line interface and test utility

SYNOPSIS

       bladeRF-cli <options>

DESCRIPTION

       The bladeRF-cli utility is used to flash firmware files, load FPGA bitstreams, and perform other tasks on
       the nuand bladeRF software-defined radio system.

       For more information  on  obtaining  or  building  firmware  files  and  FPGA  bitstreams,  please  visit
       http://nuand.com/.

       bladeRF command line interface and test utility (1.5.0-0.2016.06-2)

OPTIONS

       -d, --device <device>
              Use the specified bladeRF device.

       -f, --flash-firmware <file>
              Write the provided FX3 firmware file to flash.

       -l, --load-fpga <file>
              Load the provided FPGA bitstream.

       -L, --flash-fpga <file>
              Write the provided FPGA image to flash for autoloading. Use -L X or --flash-fpga X to disable FPGA
              autoloading.

       -p, --probe
              Probe for devices, print results, then exit.  A non-zero return status  will  be  returned  if  no
              devices are available.

       -e, --exec <command>
              Execute  the specified interactive mode command.  Multiple -e flags may be specified. The commands
              will be executed in the provided order.

       -s, --script <file>
              Run provided script.

       -i, --interactive
              Enter interactive mode.

       --lib-version
              Print libbladeRF version and exit.

       -v, --verbosity <level>
              Set the libbladeRF verbosity level.  Levels, listed in increasing verbosity, are:

       critical, error, warning,
              info, debug, verbose

       --version
              Print CLI version and exit.

       -h, --help
              Show this help text.

       --help-interactive
              Print help information for all interactive commands.

   Notes:
              The -d option takes a device specifier string.  See  the  bladerf_open()  documentation  for  more
              information about the format of this string.

              If  the  -d  parameter  is  not provided, the first available device will be used for the provided
              command, or will be opened prior to entering interactive mode.

              Commands are executed in the following order:

              Command line options, -e <command>, script commands, interactive mode commands.

              When running 'rx/tx start' from a script or via -e, ensure these commands are  later  followed  by
              'rx/tx   wait   [timeout]'   to   ensure   the   program   will   not   attempt   to  exit  before
              reception/transmission is complete.

INTERACTIVE COMMANDS

       bladeRF-cli supports a scriptable interactive mode.  Run bladeRF-cli --interactive to  enter  this  mode.
       Type "help" for a listing of all commands, or "help <command>" for more information about <command>.

   calibrate
       Usage: calibrate <operation> [options]

       Perform the specified transceiver calibration operation.

       Available operations:

       • LMS internal DC offset auto-calibrations

         • calibrate lms [show]

         • calibrate lms tuning [value]

         • calibrate lms txlpf [<I filter> <Q filter>]

         • calibrate lms rxlpf [<I filter> <Q filter>]

         • calibrate lms rxvga2 [<DC ref> <I1> <Q1> <I2> <Q2>]

         Perform the specified auto-calibration, or all of them if none are provided.  When values are provided,
         these are used instead of the results of the auto-calibration procedure.   Use  lms show  to  read  and
         print the current LMS calibration values.

         For  rxvga2, I1 and Q1 are the Stage 1 I and Q components respectively, and I2 and Q2 are the Stage 2 I
         and Q components.

       • RX and TX I/Q DC offset correction parameter calibration

         • calibrate dc <rx|tx> [<I> <Q>]

         • calibrate dc <rxtx>

         Calibrate the DC offset correction parameters for the current frequency and gain settings.   If  a  I/Q
         values are provided, they are applied directly.  cal rxtx is shorthand for cal rx followed by cal tx.

       • RX and TX I/Q balance correction parameter calibration

         • calibrate iq <rx|tx> <gain|phase> <value>

         Set the specified IQ gain or phase balance parameters.

       • Generate RX or TX I/Q DC correction parameter tables

         • calibrate table dc <rx|tx> [<f_min> <f_max> [f_inc]]

         Generate  and write an I/Q correction parameter table to the current working directory, in a file named
         <serial>_dc_<rx|tx>.tbl.  f_min and f_max are min and max frequencies to include in the  table.   f_inc
         is the frequency increment.

         By default, tables are generated over the entire frequency range, in 10 MHz steps.

       • Generate RX or TX I/Q DC correction parameter tables for AGC Look Up Table

         • calibrate table agc <rx|tx> [<f_min> <f_max> [f_inc]]

         Similar  usage as calibrate table dc except the call will set gains to the AGC's base gain value before
         running calibrate table dc.

   clear
       Usage: clear

       Clears the screen.

   echo
       Usage: echo [arg 1] [arg 2] ... [arg n]

       Echo each argument on a new line.

   erase
       Usage: erase <offset> <count>

       Erase specified erase blocks SPI flash.

       • <offset> - Erase block offset

       • <count> - Number of erase blocks to erase

   flash_backup
       Usage: flash_backup <file> (<type> | <address> <length>)

       Back up flash data to the specified file.   This  command  takes  either  two  or  four  arguments.   The
       two-argument invocation is generally recommended for non-development use.

       Parameters:

       • <type> - Type of backup.

         This selects the appropriate address and length values based upon the selected type.

         Valid options are:

               Option   Description
         ────────────────────────────────────────────────────────────────────
                  cal   Calibration data
                   fw   Firmware
               fpga40   Metadata and bitstream for 40 kLE FPGA
              fpga115   Metadata and bitstream for 115 kLE FPGA

       • <address> - Address of data to back up.  Must be erase block-aligned.

       • <len> - Length of region to back up.  Must be erase block-aligned.

       Note: When an address and length are provided, the image type will default to raw.

       Examples:

       • flash_backup cal.bin cal

         Backs up the calibration data region.

       • flash_backup cal_raw.bin 0x30000 0x10000

         Backs up the calibration region as a raw data image.

   flash_image
       Usage: flash_image <image> [output options]

       Print a flash image's metadata or create a new flash image.  When provided with the name of a flash image
       file as the only argument, this command will print the metadata contents of the image.

       The following options may be used to create a new flash image.

       • data=<file>

         File to containing data to store in the image.

       • address=<addr>

         Flash address.  The default depends upon type parameter.

       • type=<type>

         Type of flash image.  Defaults to raw.

         Valid options are:

               Option   Description
         ────────────────────────────────────────────────────────────────────
                  cal   Calibration data
                   fw   Firmware
               fpga40   Metadata and bitstream for 40 kLE FPGA
              fpga115   Metadata and bitstream for 115 kLE FPGA
                  raw   Raw data.  The address and length parameters must be
                        provided if this type is selected.

       • serial=<serial>

         Serial # to store in image.  Defaults to zeros.

   flash_init_cal
       Usage: flash_init_cal <fpga_size> <vctcxo_trim> [<output_file>]

       Create  and write a new calibration data region to the currently opened device, or to a file.  Be sure to
       back up calibration data prior to running this command.  (See the flash_backup command.)

       • <fpga_size>

         Either 40 or 115, depending on the device model.

       • <vctcxo_trim>

         VCTCXO/DAC trim value (0x0-0xffff)

       • <output_file>

         File to write calibration data to.  When this argument is provided, no data  will  be  written  to  the
         device's flash.

   flash_restore
       Usage: flash_restore <file> [<address> <length>]

       Restore flash data from a file, optionally overriding values in the image metadata.

       • <address>

         Defaults to the address specified in the provided flash image file.

       • <length>

         Defaults to length of the data in the provided image file.

   fw_log
       Usage: fw_log [filename]

       Read  the  contents  of  the device's firmware log and write it to the specified file.  If no filename is
       specified, the log content is written to stdout.

   help
       Usage: help [<command>]

       Provides extended help, like this, on any command.

   info
       Usage: info

       Prints the following information about an opened device:

       • Serial number

       • VCTCXO DAC calibration value

       • FPGA size

       • Whether or not the FPGA is loaded

       • USB bus, address, and speed

       • Backend (Denotes which device interface code is being used.)

       • Instance number

   jump_to_boot
       Usage: jump_to_boot

       Clear out a FW signature word in flash and jump to FX3 bootloader.

       The device will continue to boot into the FX3 bootloader  across  power  cycles  until  new  firmware  is
       written to the device.

   load
       Usage: load <fpga|fx3> <filename>

       Load an FPGA bitstream or program the FX3's SPI flash.

   xb
       Usage: xb <board_model> <subcommand> [parameters]

       Enable or configure an expansion board.

       Valid values for board_model:

       • 100

         XB-100 GPIO expansion board

       • 200

         XB-200 LF/MF/HF/VHF transverter expansion board

       • 300

         XB-300 amplifier board

       Common subcommands:

       • enable

         Enable the XB-100, XB-200, or XB-300 expansion board.

       XB-200 subcommands:

       • filter [rx|tx] [50|144|222|custom|auto_1db|auto_3db]

         Selects  the  specified  RX  or  TX  filter on the XB-200 board.  Below are descriptions of each of the
         filter options.

         • 50

                  Select the 50-54 MHz (6 meter band) filter.

         • 144

                  Select the 144-148 MHz (2 meter band) filter.

         • 222

                  Select the 222-225 MHz (1.25 meter band) filter. Realistically,
                  this filter option is actually slightly wider, covering
                  206 MHz - 235 MHz.

         • custom

                  Selects the custom filter path. The user should connect a filter
                  along the corresponding FILT and FILT-ANT connections when using
                  this option.  Alternatively one may jumper the FILT and FILT-ANT
                  connections to achieve "no filter" for reception. (However, this is
                  _highly_ discouraged for transmissions.)

         • auto_1db

                  Automatically selects one of the above choices based upon frequency
                  and the filters' 1dB points. The custom path is used for cases
                  that are not associated with the on-board filters.

         • auto_3db

                  Automatically selects one of the above choices based upon frequency
                  and the filters' 3dB points. The custom path is used for cases
                  that are not associated with the on-board filters.

       XB-300 subcommands:

       • <pa|lna|aux> [on|off]

         Enable or disable the power amplifier (PA), low-noise amplifier (lna)  or  auxiliary  LNA  (aux).   The
         current state if the specified device is printed if [on|off] is not specified.

         Note:  The  auxiliary  path  on the XB-300 is not populated with components by default; the aux control
         will have no effect upon the RX signal.  This option is available for users to modify their board  with
         custom hardware.

       • <pwr>

         Read the current Power Detect (PDET) voltage and compute the output power.

       • trx <rx|tx>

         The default XB-300 hardware configuration includes separate RX and TX paths.  However, users wishing to
         use only a single antenna for TRX can do so via a modification to resistor population  options  on  the
         XB-300  and  use  this  command  to  switch  between  RX an TX operation.  (See R8, R10, and R23 on the
         schematic.)

       Examples:

       • xb 200 enable

         Enables and configures the XB-200 transverter expansion board.

       • xb 200 filter rx 144

         Selects the 144-148 MHz receive filter on the XB-200 transverter expansion board.

       • xb 300 enable

         Enables and configures the use of GPIOs to interact with the XB-300.  The PA and LNA will  disabled  by
         default.

       • xb 300 lna on

         Enables  the RX LNA on the XB-300.  LED D1 (green) is illuminated when the LNA is enabled, and off when
         it is disabled.

       • xb 300 pa off

         Disables the TX PA on the XB-300.  LED D2 (blue) is illuminated when the PA is enabled, and off when it
         is disabled.

   mimo
       Usage: mimo [master | slave]

       Modify device MIMO operation.

       IMPORTANT:  This  command is deprecated and has been superseded by "print/set smb_mode".  For usage text,
       run: "set smb_mode"

   open
       Usage: open [device identifiers]

       Open the specified device for use with successive commands.  Any previously opened device will be closed.

       The general form of the device identifier string is:

       <backend>:[device=<bus>:<addr>] [instance=<n>] [serial=<serial>]

       See the bladerf_open() documentation in libbladeRF for the complete device specifier format.

   peek
       Usage: peek <dac|lms|si> <address> [num_addresses]

       The peek command can read  any  of  the  devices  hanging  off  the  FPGA  which  includes  the  LMS6002D
       transceiver, VCTCXO trim DAC or the Si5338 clock generator chip.

       If num_addresses is supplied, the address is incremented by 1 and another peek is performed for that many
       addresses.

       Valid Address Ranges:

       Device   Address Range
       ───────────────────────
          dac   0 to 255
          lms   0 to 127
           si   0 to 255

       Example:

       • peek si ...

   poke
       Usage: poke <dac|lms|si> <address> <data>

       The poke command can write any  of  the  devices  hanging  off  the  FPGA  which  includes  the  LMS6002D
       transceiver, VCTCXO trim DAC or the Si5338 clock generator chip.

       Valid Address Ranges:

       Device   Address Range
       ───────────────────────
          dac   0 to 255
          lms   0 to 127
           si   0 to 255

       Example:

       • poke lms ...

   print
       Usage: print [parameter]

       The print command takes a parameter to print.  Available parameters are listed below.  If no parameter is
       specified, all parameters are printed.

            Parameter   Description
       ────────────────────────────────────────────────────────────────────────
            bandwidth   Bandwidth settings
            frequency   Frequency settings
                 gpio   FX3 <-> FPGA GPIO state
             loopback   Loopback settings
              lnagain   Gain setting of the RX LNA, in dB
               rx_mux   FPGA RX FIFO input mux setting
               rxvga1   Gain setting of RXVGA1, in dB
               rxvga2   Gain setting of RXVGA2, in dB
               txvga1   Gain setting of TXVGA1, in dB
               txvga2   Gain setting of TXVGA2, in dB
             sampling   External or internal sampling mode
           samplerate   Samplerate settings
             smb_mode   SMB clock port mode of operation
              trimdac   VCTCXO Trim DAC settings
         vctcxo_tamer   Current VCTCXO tamer mode.
              xb_gpio   Expansion board GPIO values
          xb_gpio_dir   Expansion board GPIO direction (1=output, 0=input)

   probe
       Usage: probe [strict]

       Search for attached bladeRF device and print a list of results.

       Without specifying strict, the lack of any available devices is not considered an error.

       When provided the optional strict argument, this command will treat the situation where  no  devices  are
       found  as  an  error,  causing  scripts or lists of commands provided via the -e command line argument to
       terminate immediately.

   quit
       Usage: quit

       Exit the CLI.

   recover
       Usage: recover [<bus> <address> <firmware file>]

       Load firmware onto a device running in bootloader mode, or list all devices currently in bootloader mode.

       With no arguments, this command lists the USB bus and address for FX3-based devices running in bootloader
       mode.

       When  provided  a bus, address, and path to a firmware file, the specified device will be loaded with and
       begin executing the provided firmware.

       In most cases, after successfully loading firmware into the device's RAM, users should  open  the  device
       with the "open" command, and write the firmware to flash via "load fx3 <firmware file>"

   run
       Usage: run <script>

       Run the provided script.

   rx
       Usage: rx <start | stop | wait | config [param=val [param=val [...]]>

       Receive  IQ  samples and write them to the specified file.  Reception is controlled and configured by one
       of the following:

            Command   Description
       ────────────────────────────────────────────────────────────────────────
              start   Start receiving samples
               stop   Stop receiving samples

               wait   Wait for sample transmission to  complete,  or  until  a
                      specified amount of time elapses
             config   Configure   sample  reception.   If  no  parameters  are
                      provided, the current parameters are printed.

       Running rx without any additional commands is valid shorthand for rx config.

       The wait command takes an optional timeout parameter.  This parameter defaults to units  of  milliseconds
       (ms).   The timeout unit may be specified using the ms or s suffixes.  If this parameter is not provided,
       the command will wait until the reception completes or Ctrl-C is pressed.

       Configuration parameters take the form param=value,  and  may  be  specified  in  a  single  or  multiple
       rx config invocations.  Below is a list of available parameters.

              Parameter   Description
       ────────────────────────────────────────────────────────────────────────
                      n   Number of samples to receive.  0 = inf.
                   file   Filename to write received samples to
                 format   Output file format.  One of the following:
                          csv: CSV of SC16 Q11 samples
                          bin: Raw SC16 Q11 DAC samples
                samples   Number   of   samples  per  buffer  to  use  in  the
                          asynchronous stream.  Must be divisible by 1024  and
                          >= 1024.
                buffers   Number  of sample buffers to use in the asynchronous
                          stream.  The min value is 4.
                  xfers   Number  of  simultaneous  transfers  to  allow   the
                          asynchronous  stream  to  use.   This should be less
                          than the buffers parameter.
                timeout   Data stream timeout.  With no  suffix,  the  default
                          unit  is  ms.   The  default value is 1000 ms (1 s).
                          Valid suffixes are ms and s.

       Example:

       • rx config file=/tmp/data.bin format=bin n=10K

         Receive (10240 = 10 * 1024) samples, writing them to /tmp/data.bin in the binary DAC format.

       Notes:

       • The n, samples, buffers, and xfers parameters support the suffixes K, M, and G, which are multiples  of
         1024.

       • An  rx stop  followed  by  an rx start will result in the samples file being truncated.  If this is not
         desired, be sure to run rx config to set another file before restarting the rx stream.

       • For higher sample rates, it is advised that the binary output format be used, and the  output  file  be
         written  to  RAM  (e.g.  /tmp, /dev/shm), if space allows.  For larger captures at higher sample rates,
         consider using an SSD instead of a HDD.

   trigger
       Usage: trigger [<trigger> <tx | rx> [<off slave master fire>]]

       If used without parameters, this command prints the state of all triggers.  When aand and  supplied,  the
       specified trigger is printed.

       Below are the available options for :

            Trigger   Description
       ────────────────────────────────────────────────────────────────────────
              J71-4   Trigger signal is on mini_exp1 (J71, pin 4).

       The  trigger  is  controlled  and  configured  by  providing  the  last argument, which may be one of the
       following:

            Command   Description
       ────────────────────────────────────────────────────────────────────────

                off   Clears fire request and disables trigger functionality.
              slave   Configures trigger as slave, clears  fire  request,  and
                      arms the device.
             master   Configures  trigger  as master, clears fire request, and
                      arms the device.
               fire   Sets fire request.  Only applicable to the master.

       A trigger chain consists of a single or multiple bladeRF units and may contain TX  and  RX  modules.   If
       multiple  bladeRF  units  are  used  they  need  to be connected via the signal specified by and a common
       ground.

       The following sequence of commands should be used to ensure proper synchronization.  It is  assumed  that
       all triggers are off initially.

       1. Configure designated trigger master

           IMPORTANT

                  Never configure two devices as trigger masters on a single chain.
                  Contention on the same signal could damage the devices.

       2. Configure all other devices as trigger slaves

       3. Configure and start transmit or receive streams.

                  The operation will stall until the triggers fire. As such, sufficiently
                  large timeouts should be used to allow the trigger signal to be emitted
                  by the master and received by the slaves prior to libbladeRF returning
                  BLADERF_ERR_TIMEOUT.

       4. Set fire-request on master trigger

                  All devices will synchronously start transmitting or receiving data.

       5. Finish the transmit and receive tasks as usual

       6. Re-configure the master and slaves to clear fire requests and re-arm.

                  Steps 1 through 5 may be repeated as necessary.

       7. Disable triggering on all slaves

       8. Disable triggering on master

       Notes:

       • Synchronizing  transmitters  and receivers on a single chain will cause an offset of 11 samples between
         TX and RX; these samples should be discarded.  This is caused by different processing pipeline  lengths
         of TX and RX.  This value might change if the FPGA code is updated in the future.

   tx
       Usage: tx <start | stop | wait | config [parameters]>

       Read  IQ samples from the specified file and transmit them.  Transmission is controlled and configured by
       one of the following:

            Command   Description
       ────────────────────────────────────────────────────────────────────────
              start   Start transmitting samples
               stop   Stop transmitting samples
               wait   Wait for sample transmission to  complete,  or  until  a
                      specified amount of time elapses
             config   Configure  sample  transmission.   If  no parameters are
                      provided, the current parameters are printed.

       Running tx without any additional commands is valid shorthand for tx config.

       The wait command takes an optional timeout parameter.  This parameter defaults to units  of  milliseconds
       (ms).   The timeout unit may be specified using the ms or s suffixes.  If this parameter is not provided,
       the command will wait until the transmission completes or Ctrl-C is pressed.

       Configuration parameters take the form param=value,  and  may  be  specified  in  a  single  or  multiple
       tx config invocations.  Below is a list of available parameters.

              Parameter   Description
       ────────────────────────────────────────────────────────────────────────
                   file   Filename to read samples from
                 format   Input file format.  One of the following:
                          csv: CSV of SC16 Q11 samples ([-2048, 2047])
                          bin: Raw SC16 Q11 DAC samples ([-2048, 2047])
                 repeat   The  number  of  times  the  file contents should be
                          transmitted.  0 implies repeat until stopped.
                  delay   The  number  of  microseconds   to   delay   between
                          retransmitting file contents.  0 implies no delay.
                samples   Number   of   samples  per  buffer  to  use  in  the
                          asynchronous stream.  Must be divisible by 1024  and
                          >= 1024.
                buffers   Number  of sample buffers to use in the asynchronous
                          stream.  The min value is 4.
                  xfers   Number  of  simultaneous  transfers  to  allow   the
                          asynchronous  stream  to  use.  This should be < the
                          buffers parameter.
                timeout   Data stream timeout.  With no  suffix,  the  default
                          unit  is  ms.   The  default value is 1000 ms (1 s).
                          Valid suffixes are 'ms' and 's'.

       Example:

       • tx config file=data.bin format=bin repeat=2 delay=250000

         Transmitting the contents of data.bin two times, with a ~250ms delay between transmissions.

       Notes:

       • The n, samples, buffers, and xfers parameters support the suffixes K, M, and G, which are multiples  of
         1024.

       • For  higher  sample rates, it is advised that the input file be stored in RAM (e.g.  /tmp, /dev/shm) or
         on an SSD, rather than a HDD.

       • When providing CSV data, this command will first convert it to a binary format, stored in a file in the
         current working directory.  During this process, out-of-range values will be clamped.

       • When  using  a  binary  format,  the user is responsible for ensuring that the provided data values are
         within the allowed range.  This prerequisite alleviates the need for  this  program  to  perform  range
         checks in time-sensitive callbacks.

   set
       Usage: set <parameter> <arguments>

       The  set  command  takes  a parameter and an arbitrary number of arguments for that particular parameter.
       The parameter is one of:

            Parameter   Description
       ────────────────────────────────────────────────────────────────────────
            bandwidth   Bandwidth settings
            frequency   Frequency settings
                 gpio   FX3 <-> FPGA GPIO state
             loopback   Loopback settings.  Run 'set loopback' to list modes.
              lnagain   Gain setting of the RX LNA, in dB.  Values: 0, 3, 6
               rxvga1   Gain setting of RXVGA1, in dB.  Range: [5, 30]
               rx_mux   FPGA  RX  FIFO   input   mux   mode.    Options   are:
                        BASEBAND_LMS,       12BIT_COUNTER,      32BIT_COUNTER,
                        DIGITAL_LOOPBACK
               rxvga1   Gain setting of RXVGA1, in dB.  Range: [5, 30]
               rxvga2   Gain setting of RXVGA2, in dB.  Range: [0, 30]
               txvga1   Gain setting of TXVGA1, in dB.  Range: [-35, -4]

               txvga2   Gain setting of TXVGA2, in dB.  Range: [0, 25]
             sampling   External or internal sampling mode
           samplerate   Sample rate settings
             smb_mode   SMB clock port mode of operation
              trimdac   VCTCXO trim DAC settings
         vctcxo_tamer   VCTCXO tamer mode.  Options: Disabled, 1PPS, 10MHz
              xb_gpio   Expansion board GPIO values
          xb_gpio_dir   Expansion board GPIO direction (1=output, 0=input)

   version
       Usage: version

       Prints version information for host software and the current device.

EXAMPLES

       $ bladeRF-cli -l hostedx40.rbf

              Loads an FPGA image named hostedx40.rbf onto the bladeRF's FPGA.

              Note: The FPGA image loaded with --load-fpga will be lost on power-off.

       $ bladeRF-cli -f firmware.img

              Flashes firmware.img onto the bladeRF's firmware.

       $ bladeRF-cli -L hostedx40.rbf

              Flashes the FPGA image named hostedx40.rbf onto the bladeRF, where it will be automatically loaded
              on power-up.

AUTHOR

       This  utility  was written by the contributors to the bladeRF Project. See the CONTRIBUTORS file for more
       information.

REPORTING BUGS

       Bugs may be reported via the issue tracker at https://github.com/nuand/bladerf.

       Copyright © 2013-2015 Nuand LLC.

       This program is free software; you can redistribute it and/or modify  it  under  the  terms  of  the  GNU
       General  Public License as published by the Free Software Foundation; either version 2 of the License, or
       (at your option) any later version.

       This program is distributed in the hope that it will be useful, but WITHOUT ANY  WARRANTY;  without  even
       the  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
       License for more details.

       You should have received a copy of the GNU General Public License along with this program; if not,  write
       to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

SEE ALSO

       More documentation is available at http://nuand.com/ and https://github.com/nuand/bladerf.