uhd::usrp::multi_usrp Class Reference

#include <uhd/usrp/multi_usrp.hpp>

Inheritance diagram for uhd::usrp::multi_usrp:

Classes
struct	register_info_t

Public Types
typedef boost::shared_ptr< multi_usrp >	sptr

Public Member Functions
virtual	~multi_usrp (void)=0
virtual device::sptr	get_device (void)=0
virtual rx_streamer::sptr	get_rx_stream (const stream_args_t &args)=0
	Convenience method to get a RX streamer. See also uhd::device::get_rx_stream(). More...
virtual tx_streamer::sptr	get_tx_stream (const stream_args_t &args)=0
	Convenience method to get a TX streamer. See also uhd::device::get_rx_stream(). More...
virtual dict< std::string, std::string >	get_usrp_rx_info (size_t chan=0)=0
virtual dict< std::string, std::string >	get_usrp_tx_info (size_t chan=0)=0
virtual void	set_master_clock_rate (double rate, size_t mboard=ALL_MBOARDS)=0
virtual double	get_master_clock_rate (size_t mboard=0)=0
virtual std::string	get_pp_string (void)=0
virtual std::string	get_mboard_name (size_t mboard=0)=0
virtual time_spec_t	get_time_now (size_t mboard=0)=0
virtual time_spec_t	get_time_last_pps (size_t mboard=0)=0
virtual void	set_time_now (const time_spec_t &time_spec, size_t mboard=ALL_MBOARDS)=0
virtual void	set_time_next_pps (const time_spec_t &time_spec, size_t mboard=ALL_MBOARDS)=0
virtual void	set_time_unknown_pps (const time_spec_t &time_spec)=0
virtual bool	get_time_synchronized (void)=0
virtual void	set_command_time (const uhd::time_spec_t &time_spec, size_t mboard=ALL_MBOARDS)=0
virtual void	clear_command_time (size_t mboard=ALL_MBOARDS)=0
virtual void	issue_stream_cmd (const stream_cmd_t &stream_cmd, size_t chan=ALL_CHANS)=0
virtual void	set_clock_config (const clock_config_t &clock_config, size_t mboard=ALL_MBOARDS)=0
virtual void	set_time_source (const std::string &source, const size_t mboard=ALL_MBOARDS)=0
virtual std::string	get_time_source (const size_t mboard)=0
virtual std::vector< std::string >	get_time_sources (const size_t mboard)=0
virtual void	set_clock_source (const std::string &source, const size_t mboard=ALL_MBOARDS)=0
virtual std::string	get_clock_source (const size_t mboard)=0
virtual std::vector< std::string >	get_clock_sources (const size_t mboard)=0
virtual void	set_clock_source_out (const bool enb, const size_t mboard=ALL_MBOARDS)=0
virtual void	set_time_source_out (const bool enb, const size_t mboard=ALL_MBOARDS)=0
virtual size_t	get_num_mboards (void)=0
virtual sensor_value_t	get_mboard_sensor (const std::string &name, size_t mboard=0)=0
virtual std::vector< std::string >	get_mboard_sensor_names (size_t mboard=0)=0
virtual void	set_user_register (const uint8_t addr, const uint32_t data, size_t mboard=ALL_MBOARDS)=0
virtual void	set_rx_subdev_spec (const uhd::usrp::subdev_spec_t &spec, size_t mboard=ALL_MBOARDS)=0
virtual uhd::usrp::subdev_spec_t	get_rx_subdev_spec (size_t mboard=0)=0
virtual size_t	get_rx_num_channels (void)=0
virtual std::string	get_rx_subdev_name (size_t chan=0)=0
virtual void	set_rx_rate (double rate, size_t chan=ALL_CHANS)=0
virtual double	get_rx_rate (size_t chan=0)=0
virtual meta_range_t	get_rx_rates (size_t chan=0)=0
virtual tune_result_t	set_rx_freq (const tune_request_t &tune_request, size_t chan=0)=0
virtual double	get_rx_freq (size_t chan=0)=0
virtual freq_range_t	get_rx_freq_range (size_t chan=0)=0
virtual freq_range_t	get_fe_rx_freq_range (size_t chan=0)=0
virtual std::vector< std::string >	get_rx_lo_names (size_t chan=0)=0
virtual void	set_rx_lo_source (const std::string &src, const std::string &name=ALL_LOS, size_t chan=0)=0
virtual const std::string	get_rx_lo_source (const std::string &name=ALL_LOS, size_t chan=0)=0
virtual std::vector< std::string >	get_rx_lo_sources (const std::string &name=ALL_LOS, size_t chan=0)=0
virtual void	set_rx_lo_export_enabled (bool enabled, const std::string &name=ALL_LOS, size_t chan=0)=0
virtual bool	get_rx_lo_export_enabled (const std::string &name=ALL_LOS, size_t chan=0)=0
virtual double	set_rx_lo_freq (double freq, const std::string &name, size_t chan=0)=0
virtual double	get_rx_lo_freq (const std::string &name, size_t chan=0)=0
virtual freq_range_t	get_rx_lo_freq_range (const std::string &name, size_t chan=0)=0
virtual void	set_rx_gain (double gain, const std::string &name, size_t chan=0)=0
void	set_rx_gain (double gain, size_t chan=0)
	A convenience wrapper for setting overall RX gain. More...
virtual void	set_normalized_rx_gain (double gain, size_t chan=0)=0
virtual void	set_rx_agc (bool enable, size_t chan=0)=0
virtual double	get_rx_gain (const std::string &name, size_t chan=0)=0
double	get_rx_gain (size_t chan=0)
	A convenience wrapper for getting overall RX gain. More...
virtual double	get_normalized_rx_gain (size_t chan=0)=0
virtual gain_range_t	get_rx_gain_range (const std::string &name, size_t chan=0)=0
gain_range_t	get_rx_gain_range (size_t chan=0)
	A convenience wrapper for getting overall RX gain range. More...
virtual std::vector< std::string >	get_rx_gain_names (size_t chan=0)=0
virtual void	set_rx_antenna (const std::string &ant, size_t chan=0)=0
virtual std::string	get_rx_antenna (size_t chan=0)=0
virtual std::vector< std::string >	get_rx_antennas (size_t chan=0)=0
virtual void	set_rx_bandwidth (double bandwidth, size_t chan=0)=0
virtual double	get_rx_bandwidth (size_t chan=0)=0
virtual meta_range_t	get_rx_bandwidth_range (size_t chan=0)=0
virtual dboard_iface::sptr	get_rx_dboard_iface (size_t chan=0)=0
virtual sensor_value_t	get_rx_sensor (const std::string &name, size_t chan=0)=0
virtual std::vector< std::string >	get_rx_sensor_names (size_t chan=0)=0
virtual void	set_rx_dc_offset (const bool enb, size_t chan=ALL_CHANS)=0
virtual void	set_rx_dc_offset (const std::complex< double > &offset, size_t chan=ALL_CHANS)=0
virtual void	set_rx_iq_balance (const bool enb, size_t chan)=0
virtual void	set_rx_iq_balance (const std::complex< double > &correction, size_t chan=ALL_CHANS)=0
virtual void	set_tx_subdev_spec (const uhd::usrp::subdev_spec_t &spec, size_t mboard=ALL_MBOARDS)=0
virtual uhd::usrp::subdev_spec_t	get_tx_subdev_spec (size_t mboard=0)=0
virtual size_t	get_tx_num_channels (void)=0
virtual std::string	get_tx_subdev_name (size_t chan=0)=0
virtual void	set_tx_rate (double rate, size_t chan=ALL_CHANS)=0
virtual double	get_tx_rate (size_t chan=0)=0
virtual meta_range_t	get_tx_rates (size_t chan=0)=0
virtual tune_result_t	set_tx_freq (const tune_request_t &tune_request, size_t chan=0)=0
virtual double	get_tx_freq (size_t chan=0)=0
virtual freq_range_t	get_tx_freq_range (size_t chan=0)=0
virtual freq_range_t	get_fe_tx_freq_range (size_t chan=0)=0
virtual void	set_tx_gain (double gain, const std::string &name, size_t chan=0)=0
void	set_tx_gain (double gain, size_t chan=0)
	A convenience wrapper for setting overall TX gain. More...
virtual void	set_normalized_tx_gain (double gain, size_t chan=0)=0
virtual double	get_tx_gain (const std::string &name, size_t chan=0)=0
double	get_tx_gain (size_t chan=0)
	A convenience wrapper for getting overall TX gain. More...
virtual double	get_normalized_tx_gain (size_t chan=0)=0
virtual gain_range_t	get_tx_gain_range (const std::string &name, size_t chan=0)=0
gain_range_t	get_tx_gain_range (size_t chan=0)
	A convenience wrapper for getting overall TX gain range. More...
virtual std::vector< std::string >	get_tx_gain_names (size_t chan=0)=0
virtual void	set_tx_antenna (const std::string &ant, size_t chan=0)=0
virtual std::string	get_tx_antenna (size_t chan=0)=0
virtual std::vector< std::string >	get_tx_antennas (size_t chan=0)=0
virtual void	set_tx_bandwidth (double bandwidth, size_t chan=0)=0
virtual double	get_tx_bandwidth (size_t chan=0)=0
virtual meta_range_t	get_tx_bandwidth_range (size_t chan=0)=0
virtual dboard_iface::sptr	get_tx_dboard_iface (size_t chan=0)=0
virtual sensor_value_t	get_tx_sensor (const std::string &name, size_t chan=0)=0
virtual std::vector< std::string >	get_tx_sensor_names (size_t chan=0)=0
virtual void	set_tx_dc_offset (const std::complex< double > &offset, size_t chan=ALL_CHANS)=0
virtual void	set_tx_iq_balance (const std::complex< double > &correction, size_t chan=ALL_CHANS)=0
virtual std::vector< std::string >	get_gpio_banks (const size_t mboard)=0
virtual void	set_gpio_attr (const std::string &bank, const std::string &attr, const uint32_t value, const uint32_t mask=0xffffffff, const size_t mboard=0)=0
virtual uint32_t	get_gpio_attr (const std::string &bank, const std::string &attr, const size_t mboard=0)=0
virtual std::vector< std::string >	enumerate_registers (const size_t mboard=0)=0
virtual register_info_t	get_register_info (const std::string &path, const size_t mboard=0)=0
virtual void	write_register (const std::string &path, const uint32_t field, const uint64_t value, const size_t mboard=0)=0
virtual uint64_t	read_register (const std::string &path, const uint32_t field, const size_t mboard=0)=0
virtual std::vector< std::string >	get_filter_names (const std::string &search_mask="")=0
virtual filter_info_base::sptr	get_filter (const std::string &path)=0
virtual void	set_filter (const std::string &path, filter_info_base::sptr filter)=0

Static Public Member Functions
static sptr	make (const device_addr_t &dev_addr)

Static Public Attributes
static const size_t	ALL_MBOARDS = size_t(~0)
	A wildcard motherboard index. More...
static const size_t	ALL_CHANS = size_t(~0)
	A wildcard channel index. More...
static const std::string	ALL_GAINS
	A wildcard gain element name. More...
static const std::string	ALL_LOS
	A wildcard gain element name. More...

Detailed Description

The Multi-USRP device class:

This class facilitates ease-of-use for most use-case scenarios. The wrapper provides convenience functions to tune the devices, set the dboard gains, antennas, filters, and other properties. This class can be used to interface with a single USRP with one or more channels, or multiple USRPs in a homogeneous setup. All members take an optional parameter for board number or channel number. In the single device, single channel case, these parameters can be unspecified.

When using a single device with multiple channels:

• Channel mapping is determined by the frontend specifications
• All channels share a common RX sample rate
• All channels share a common TX sample rate

When using multiple devices in a configuration:

• Channel mapping is determined by the device address arguments
• All boards share a common RX sample rate
• All boards share a common TX sample rate
• All boards share a common RX frontend specification size
• All boards share a common TX frontend specification size
• All boards must have synchronized times (see the set_time_*() calls)

Example to setup channel mapping for multiple devices:

//create a multi_usrp with two boards in the configuration
device_addr_t dev_addr;
dev_addr["addr0"] = "192.168.10.2"
dev_addr["addr1"] = "192.168.10.3";
multi_usrp::sptr dev = multi_usrp::make(dev_addr);

//set the board on 10.2 to use the A RX frontend (RX channel 0)
dev->set_rx_subdev_spec("A:A", 0);

//set the board on 10.3 to use the B RX frontend (RX channel 1)
dev->set_rx_subdev_spec("A:B", 1);

//set both boards to use the AB TX frontend (TX channels 0 and 1)
dev->set_tx_subdev_spec("A:AB", multi_usrp::ALL_MBOARDS);

//now that all the channels are mapped, continue with configuration...

Member Typedef Documentation

sptr

typedef boost::shared_ptr<multi_usrp> uhd::usrp::multi_usrp::sptr

Constructor & Destructor Documentation

~multi_usrp()

virtual uhd::usrp::multi_usrp::~multi_usrp ( void  )

pure virtual

Member Function Documentation

clear_command_time()

virtual void uhd::usrp::multi_usrp::clear_command_time ( size_t  mboard = ALL_MBOARDS )

pure virtual

Clear the command time so future commands are sent ASAP.

Parameters

mboard

which motherboard to set the config

enumerate_registers()

virtual std::vector<std::string> uhd::usrp::multi_usrp::enumerate_registers ( const size_t  mboard = 0 )

pure virtual

Enumerate the full paths of all low-level USRP registers accessible to read/write

Parameters

mboard

the motherboard index 0 to M-1

Returns

a vector of register paths

get_clock_source()

virtual std::string uhd::usrp::multi_usrp::get_clock_source ( const size_t  mboard )

pure virtual

Get the currently set clock source.

Parameters

mboard

which motherboard to get the config

Returns

the string representing the clock source

get_clock_sources()

virtual std::vector<std::string> uhd::usrp::multi_usrp::get_clock_sources ( const size_t  mboard )

pure virtual

Get a list of possible clock sources.

Parameters

mboard

which motherboard to get the list

Returns

a vector of strings for possible settings

get_device()

virtual device::sptr uhd::usrp::multi_usrp::get_device ( void  )

pure virtual

Get the underlying device object. This is needed to get access to the streaming API and properties.

Returns

the device object within this USRP

get_fe_rx_freq_range()

virtual freq_range_t uhd::usrp::multi_usrp::get_fe_rx_freq_range ( size_t  chan = 0 )

pure virtual

Get the center frequency range of the RF frontend.

Parameters

chan	the channel index 0 to N-1

Returns

a frequency range object

get_fe_tx_freq_range()

virtual freq_range_t uhd::usrp::multi_usrp::get_fe_tx_freq_range ( size_t  chan = 0 )

pure virtual

Get the center frequency range of the TX frontend.

Parameters

chan	the channel index 0 to N-1

Returns

a frequency range object

get_filter()

virtual filter_info_base::sptr uhd::usrp::multi_usrp::get_filter ( const std::string &  path )

pure virtual

Return the filter object for the given name.

Parameters

path	the name of the filter as returned from get_filter_names().

Returns

a filter_info_base::sptr.

get_filter_names()

virtual std::vector<std::string> uhd::usrp::multi_usrp::get_filter_names ( const std::string &  search_mask = "" )

pure virtual

Enumerate the available filters in the signal path.

Parameters

search_mask

Select only certain filter names by specifying this search mask. E.g. if search mask is set to "rx_frontends/A" only filter names including that string will be returned.

Returns

a vector of strings representing the selected filter names.

get_gpio_attr()

virtual uint32_t uhd::usrp::multi_usrp::get_gpio_attr ( const std::string &  bank, const std::string &  attr, const size_t  mboard = 0  )

pure virtual

Get a GPIO attribute on a particular GPIO bank. Possible attribute names:

• CTRL - 1 for ATR mode 0 for GPIO mode
• DDR - 1 for output 0 for input
• OUT - GPIO output level (not ATR mode)
• ATR_0X - ATR idle state
• ATR_RX - ATR receive only state
• ATR_TX - ATR transmit only state
• ATR_XX - ATR full duplex state
• READBACK - readback input GPIOs

  Parameters

  bank	the name of a GPIO bank
  attr	the name of a GPIO attribute
  mboard	the motherboard index 0 to M-1

  Returns

  the value set for this attribute

get_gpio_banks()

virtual std::vector<std::string> uhd::usrp::multi_usrp::get_gpio_banks ( const size_t  mboard )

pure virtual

Enumerate gpio banks on the specified device.

Parameters

mboard

the motherboard index 0 to M-1

Returns

a list of string for each bank name

get_master_clock_rate()

virtual double uhd::usrp::multi_usrp::get_master_clock_rate ( size_t  mboard = 0 )

pure virtual

Get the master clock rate.

Parameters

mboard

the motherboard index 0 to M-1

Returns

the master clock rate in Hz.

get_mboard_name()

virtual std::string uhd::usrp::multi_usrp::get_mboard_name ( size_t  mboard = 0 )

pure virtual

Get canonical name for this USRP motherboard.

Parameters

mboard

which motherboard to query

Returns

a string representing the name

get_mboard_sensor()

virtual sensor_value_t uhd::usrp::multi_usrp::get_mboard_sensor ( const std::string &  name, size_t  mboard = 0  )

pure virtual

Get a motherboard sensor value.

Parameters

name	the name of the sensor
mboard	the motherboard index 0 to M-1

Returns

a sensor value object

get_mboard_sensor_names()

virtual std::vector<std::string> uhd::usrp::multi_usrp::get_mboard_sensor_names ( size_t  mboard = 0 )

pure virtual

Get a list of possible motherboard sensor names.

Parameters

mboard

the motherboard index 0 to M-1

Returns

a vector of sensor names

get_normalized_rx_gain()

virtual double uhd::usrp::multi_usrp::get_normalized_rx_gain ( size_t  chan = 0 )

pure virtual

Return the normalized RX gain value.

See set_normalized_rx_gain() for a discussion of normalized gains.

Parameters

chan	the channel index 0 to N-1

Returns

The normalized gain (in [0, 1])

Exceptions

A	uhd::runtime_error if the gain value is outside [0, 1].

get_normalized_tx_gain()

virtual double uhd::usrp::multi_usrp::get_normalized_tx_gain ( size_t  chan = 0 )

pure virtual

Return the normalized TX gain value.

See set_normalized_rx_gain() for a discussion of normalized gains.

Parameters

chan	the channel index 0 to N-1

Returns

The normalized gain (in [0, 1])

Exceptions

A	uhd::runtime_error if the gain value is outside [0, 1].

get_num_mboards()

virtual size_t uhd::usrp::multi_usrp::get_num_mboards ( void  )

pure virtual

Get the number of USRP motherboards in this configuration.

get_pp_string()

virtual std::string uhd::usrp::multi_usrp::get_pp_string ( void  )

pure virtual

Get a printable summary for this USRP configuration.

Returns

a printable string

get_register_info()

virtual register_info_t uhd::usrp::multi_usrp::get_register_info ( const std::string &  path, const size_t  mboard = 0  )

pure virtual

Get more information about a low-level device register

Parameters

path	the full path to the register
mboard	the motherboard index 0 to M-1

Returns

the info struct which contains the bitwidth and read-write access information

get_rx_antenna()

virtual std::string uhd::usrp::multi_usrp::get_rx_antenna ( size_t  chan = 0 )

pure virtual

Get the selected RX antenna on the frontend.

Parameters

chan	the channel index 0 to N-1

Returns

the antenna name

get_rx_antennas()

virtual std::vector<std::string> uhd::usrp::multi_usrp::get_rx_antennas ( size_t  chan = 0 )

pure virtual

Get a list of possible RX antennas on the frontend.

Parameters

chan	the channel index 0 to N-1

Returns

a vector of antenna names

get_rx_bandwidth()

virtual double uhd::usrp::multi_usrp::get_rx_bandwidth ( size_t  chan = 0 )

pure virtual

Get the RX bandwidth on the frontend.

Parameters

chan	the channel index 0 to N-1

Returns

the bandwidth in Hz

get_rx_bandwidth_range()

virtual meta_range_t uhd::usrp::multi_usrp::get_rx_bandwidth_range ( size_t  chan = 0 )

pure virtual

Get the range of the possible RX bandwidth settings.

Parameters

chan	the channel index 0 to N-1

Returns

a range of bandwidths in Hz

get_rx_dboard_iface()

virtual dboard_iface::sptr uhd::usrp::multi_usrp::get_rx_dboard_iface ( size_t  chan = 0 )

pure virtual

Get the dboard interface object for the RX frontend. The dboard interface gives access to GPIOs, SPI, I2C, low-speed ADC and DAC. Use at your own risk!

Parameters

chan	the channel index 0 to N-1

Returns

the dboard interface sptr

get_rx_freq()

virtual double uhd::usrp::multi_usrp::get_rx_freq ( size_t  chan = 0 )

pure virtual

Get the RX center frequency.

Parameters

chan	the channel index 0 to N-1

Returns

the frequency in Hz

get_rx_freq_range()

virtual freq_range_t uhd::usrp::multi_usrp::get_rx_freq_range ( size_t  chan = 0 )

pure virtual

Get the RX center frequency range. This range includes the overall tunable range of the RX chain, including frontend chain and digital down conversion chain. This tunable limit does not include the baseband bandwidth; users should assume that the actual range is +/- samp_rate/2.

Parameters

chan	the channel index 0 to N-1

Returns

a frequency range object

get_rx_gain() [1/2]

virtual double uhd::usrp::multi_usrp::get_rx_gain ( const std::string &  name, size_t  chan = 0  )

pure virtual

Get the RX gain value for the specified gain element. For an empty name, sum across all gain elements.

Parameters

name	the name of the gain element
chan	the channel index 0 to N-1

Returns

the gain in dB

get_rx_gain() [2/2]

double uhd::usrp::multi_usrp::get_rx_gain ( size_t  chan = 0 )

inline

A convenience wrapper for getting overall RX gain.

get_rx_gain_names()

virtual std::vector<std::string> uhd::usrp::multi_usrp::get_rx_gain_names ( size_t  chan = 0 )

pure virtual

Get the names of the gain elements in the RX chain. Gain elements are ordered from antenna to FPGA.

Parameters

chan	the channel index 0 to N-1

Returns

a vector of gain element names

get_rx_gain_range() [1/2]

virtual gain_range_t uhd::usrp::multi_usrp::get_rx_gain_range ( const std::string &  name, size_t  chan = 0  )

pure virtual

Get the RX gain range for the specified gain element. For an empty name, calculate the overall gain range.

Parameters

name	the name of the gain element
chan	the channel index 0 to N-1

Returns

a gain range object

get_rx_gain_range() [2/2]

gain_range_t uhd::usrp::multi_usrp::get_rx_gain_range ( size_t  chan = 0 )

inline

A convenience wrapper for getting overall RX gain range.

get_rx_lo_export_enabled()

virtual bool uhd::usrp::multi_usrp::get_rx_lo_export_enabled ( const std::string &  name = ALL_LOS, size_t  chan = 0  )

pure virtual

Returns true if the currently selected LO is being exported.

Parameters

name	the name of the LO stage to query
chan	the channel index 0 to N-1

get_rx_lo_freq()

virtual double uhd::usrp::multi_usrp::get_rx_lo_freq ( const std::string &  name, size_t  chan = 0  )

pure virtual

Get the current RX LO frequency (Advanced). If the channel does not have independently configurable LOs the current rf frequency will be returned.

Parameters

name	the name of the LO stage to query
chan	the channel index 0 to N-1

Returns

the configured LO frequency

get_rx_lo_freq_range()

virtual freq_range_t uhd::usrp::multi_usrp::get_rx_lo_freq_range ( const std::string &  name, size_t  chan = 0  )

pure virtual

Get the LO frequency range of the RX LO. If the channel does not have independently configurable LOs the rf frequency range will be returned.

Parameters

name	the name of the LO stage to query
chan	the channel index 0 to N-1

Returns

a frequency range object

get_rx_lo_names()

virtual std::vector<std::string> uhd::usrp::multi_usrp::get_rx_lo_names ( size_t  chan = 0 )

pure virtual

Get a list of possible LO stage names

Parameters

chan	the channel index 0 to N-1

Returns

a vector of strings for possible LO names

get_rx_lo_source()

virtual const std::string uhd::usrp::multi_usrp::get_rx_lo_source ( const std::string &  name = ALL_LOS, size_t  chan = 0  )

pure virtual

Get the currently set LO source. Channels without controllable LO sources will return "internal"

Parameters

name	the name of the LO stage to query
chan	the channel index 0 to N-1

Returns

the configured LO source

get_rx_lo_sources()

virtual std::vector<std::string> uhd::usrp::multi_usrp::get_rx_lo_sources ( const std::string &  name = ALL_LOS, size_t  chan = 0  )

pure virtual

Get a list of possible LO sources. Channels which do not have controllable LO sources will return "internal".

Parameters

name	the name of the LO stage to query
chan	the channel index 0 to N-1

Returns

a vector of strings for possible settings

get_rx_num_channels()

virtual size_t uhd::usrp::multi_usrp::get_rx_num_channels ( void  )

pure virtual

Get the number of RX channels in this configuration. This is the number of USRPs times the number of RX channels per board, where the number of RX channels per board is homogeneous among all USRPs.

get_rx_rate()

virtual double uhd::usrp::multi_usrp::get_rx_rate ( size_t  chan = 0 )

pure virtual

Gets the RX sample rate.

Parameters

chan	the channel index 0 to N-1

Returns

the rate in Sps

get_rx_rates()

virtual meta_range_t uhd::usrp::multi_usrp::get_rx_rates ( size_t  chan = 0 )

pure virtual

Get a range of possible RX rates.

Parameters

chan	the channel index 0 to N-1

Returns

the meta range of rates

get_rx_sensor()

virtual sensor_value_t uhd::usrp::multi_usrp::get_rx_sensor ( const std::string &  name, size_t  chan = 0  )

pure virtual

Get an RX frontend sensor value.

Parameters

name	the name of the sensor
chan	the channel index 0 to N-1

Returns

a sensor value object

get_rx_sensor_names()

virtual std::vector<std::string> uhd::usrp::multi_usrp::get_rx_sensor_names ( size_t  chan = 0 )

pure virtual

Get a list of possible RX frontend sensor names.

Parameters

chan	the channel index 0 to N-1

Returns

a vector of sensor names

get_rx_stream()

virtual rx_streamer::sptr uhd::usrp::multi_usrp::get_rx_stream ( const stream_args_t &  args )

pure virtual

Convenience method to get a RX streamer. See also uhd::device::get_rx_stream().

get_rx_subdev_name()

virtual std::string uhd::usrp::multi_usrp::get_rx_subdev_name ( size_t  chan = 0 )

pure virtual

Get the name of the RX frontend.

Parameters

chan	the channel index 0 to N-1

Returns

the frontend name

get_rx_subdev_spec()

virtual uhd::usrp::subdev_spec_t uhd::usrp::multi_usrp::get_rx_subdev_spec ( size_t  mboard = 0 )

pure virtual

Get the RX frontend specification.

Parameters

mboard

the motherboard index 0 to M-1

Returns

the frontend specification in use

get_time_last_pps()

virtual time_spec_t uhd::usrp::multi_usrp::get_time_last_pps ( size_t  mboard = 0 )

pure virtual

Get the time when the last pps pulse occurred.

Parameters

mboard

which motherboard to query

Returns

a timespec representing the last pps

get_time_now()

virtual time_spec_t uhd::usrp::multi_usrp::get_time_now ( size_t  mboard = 0 )

pure virtual

Get the current time in the usrp time registers.

Parameters

mboard

which motherboard to query

Returns

a timespec representing current usrp time

get_time_source()

virtual std::string uhd::usrp::multi_usrp::get_time_source ( const size_t  mboard )

pure virtual

Get the currently set time source.

Parameters

mboard

which motherboard to get the config

Returns

the string representing the time source

get_time_sources()

virtual std::vector<std::string> uhd::usrp::multi_usrp::get_time_sources ( const size_t  mboard )

pure virtual

Get a list of possible time sources.

Parameters

mboard

which motherboard to get the list

Returns

a vector of strings for possible settings

get_time_synchronized()

virtual bool uhd::usrp::multi_usrp::get_time_synchronized ( void  )

pure virtual

Are the times across all motherboards in this configuration synchronized? Checks that all time registers are approximately close but not exact, given that the RTT may varying for a control packet transaction.

Returns

true when all motherboards time registers are in sync

get_tx_antenna()

virtual std::string uhd::usrp::multi_usrp::get_tx_antenna ( size_t  chan = 0 )

pure virtual

Get the selected TX antenna on the frontend.

Parameters

chan	the channel index 0 to N-1

Returns

the antenna name

get_tx_antennas()

virtual std::vector<std::string> uhd::usrp::multi_usrp::get_tx_antennas ( size_t  chan = 0 )

pure virtual

Get a list of possible TX antennas on the frontend.

Parameters

chan	the channel index 0 to N-1

Returns

a vector of antenna names

get_tx_bandwidth()

virtual double uhd::usrp::multi_usrp::get_tx_bandwidth ( size_t  chan = 0 )

pure virtual

Get the TX bandwidth on the frontend.

Parameters

chan	the channel index 0 to N-1

Returns

the bandwidth in Hz

get_tx_bandwidth_range()

virtual meta_range_t uhd::usrp::multi_usrp::get_tx_bandwidth_range ( size_t  chan = 0 )

pure virtual

Get the range of the possible TX bandwidth settings.

Parameters

chan	the channel index 0 to N-1

Returns

a range of bandwidths in Hz

get_tx_dboard_iface()

virtual dboard_iface::sptr uhd::usrp::multi_usrp::get_tx_dboard_iface ( size_t  chan = 0 )

pure virtual

Get the dboard interface object for the TX frontend. The dboard interface gives access to GPIOs, SPI, I2C, low-speed ADC and DAC. Use at your own risk!

Parameters

chan	the channel index 0 to N-1

Returns

the dboard interface sptr

get_tx_freq()

virtual double uhd::usrp::multi_usrp::get_tx_freq ( size_t  chan = 0 )

pure virtual

Get the TX center frequency.

Parameters

chan	the channel index 0 to N-1

Returns

the frequency in Hz

get_tx_freq_range()

virtual freq_range_t uhd::usrp::multi_usrp::get_tx_freq_range ( size_t  chan = 0 )

pure virtual

Get the TX center frequency range. This range includes the overall tunable range of the TX chain, including frontend chain and digital up conversion chain. This tunable limit does not include the baseband bandwidth; users should assume that the actual range is +/- samp_rate/2.

Parameters

chan	the channel index 0 to N-1

Returns

a frequency range object

get_tx_gain() [1/2]

virtual double uhd::usrp::multi_usrp::get_tx_gain ( const std::string &  name, size_t  chan = 0  )

pure virtual

Get the TX gain value for the specified gain element. For an empty name, sum across all gain elements.

Parameters

name	the name of the gain element
chan	the channel index 0 to N-1

Returns

the gain in dB

get_tx_gain() [2/2]

double uhd::usrp::multi_usrp::get_tx_gain ( size_t  chan = 0 )

inline

A convenience wrapper for getting overall TX gain.

get_tx_gain_names()

virtual std::vector<std::string> uhd::usrp::multi_usrp::get_tx_gain_names ( size_t  chan = 0 )

pure virtual

Get the names of the gain elements in the TX chain. Gain elements are ordered from antenna to FPGA.

Parameters

chan	the channel index 0 to N-1

Returns

a vector of gain element names

get_tx_gain_range() [1/2]

virtual gain_range_t uhd::usrp::multi_usrp::get_tx_gain_range ( const std::string &  name, size_t  chan = 0  )

pure virtual

Get the TX gain range for the specified gain element. For an empty name, calculate the overall gain range.

Parameters

name	the name of the gain element
chan	the channel index 0 to N-1

Returns

a gain range object

get_tx_gain_range() [2/2]

gain_range_t uhd::usrp::multi_usrp::get_tx_gain_range ( size_t  chan = 0 )

inline

A convenience wrapper for getting overall TX gain range.

get_tx_num_channels()

virtual size_t uhd::usrp::multi_usrp::get_tx_num_channels ( void  )

pure virtual

Get the number of TX channels in this configuration. This is the number of USRPs times the number of TX channels per board, where the number of TX channels per board is homogeneous among all USRPs.

get_tx_rate()

virtual double uhd::usrp::multi_usrp::get_tx_rate ( size_t  chan = 0 )

pure virtual

Gets the TX sample rate.

Parameters

chan	the channel index 0 to N-1

Returns

the rate in Sps

get_tx_rates()

virtual meta_range_t uhd::usrp::multi_usrp::get_tx_rates ( size_t  chan = 0 )

pure virtual

Get a range of possible TX rates.

Parameters

chan	the channel index 0 to N-1

Returns

the meta range of rates

get_tx_sensor()

virtual sensor_value_t uhd::usrp::multi_usrp::get_tx_sensor ( const std::string &  name, size_t  chan = 0  )

pure virtual

Get an TX frontend sensor value.

Parameters

name	the name of the sensor
chan	the channel index 0 to N-1

Returns

a sensor value object

get_tx_sensor_names()

virtual std::vector<std::string> uhd::usrp::multi_usrp::get_tx_sensor_names ( size_t  chan = 0 )

pure virtual

Get a list of possible TX frontend sensor names.

Parameters

chan	the channel index 0 to N-1

Returns

a vector of sensor names

get_tx_stream()

virtual tx_streamer::sptr uhd::usrp::multi_usrp::get_tx_stream ( const stream_args_t &  args )

pure virtual

Convenience method to get a TX streamer. See also uhd::device::get_rx_stream().

get_tx_subdev_name()

virtual std::string uhd::usrp::multi_usrp::get_tx_subdev_name ( size_t  chan = 0 )

pure virtual

Get the name of the TX frontend.

Parameters

chan	the channel index 0 to N-1

Returns

the frontend name

get_tx_subdev_spec()

virtual uhd::usrp::subdev_spec_t uhd::usrp::multi_usrp::get_tx_subdev_spec ( size_t  mboard = 0 )

pure virtual

Get the TX frontend specification.

Parameters

mboard

the motherboard index 0 to M-1

Returns

the frontend specification in use

get_usrp_rx_info()

virtual dict<std::string, std::string> uhd::usrp::multi_usrp::get_usrp_rx_info ( size_t  chan = 0 )

pure virtual

Returns identifying information about this USRP's configuration. Returns motherboard ID, name, and serial. Returns daughterboard RX ID, subdev name and spec, serial, and antenna.

Parameters

chan	channel index 0 to N-1

Returns

RX info

get_usrp_tx_info()

virtual dict<std::string, std::string> uhd::usrp::multi_usrp::get_usrp_tx_info ( size_t  chan = 0 )

pure virtual

Returns identifying information about this USRP's configuration. Returns motherboard ID, name, and serial. Returns daughterboard TX ID, subdev name and spec, serial, and antenna.

Parameters

chan	channel index 0 to N-1

Returns

TX info

issue_stream_cmd()

virtual void uhd::usrp::multi_usrp::issue_stream_cmd ( const stream_cmd_t &  stream_cmd, size_t  chan = ALL_CHANS  )

pure virtual

Issue a stream command to the usrp device. This tells the usrp to send samples into the host. See the documentation for stream_cmd_t for more info.

With multiple devices, the first stream command in a chain of commands should have a time spec in the near future and stream_now = false; to ensure that the packets can be aligned by their time specs.

Parameters

stream_cmd	the stream command to issue
chan	the channel index 0 to N-1

make()

static sptr uhd::usrp::multi_usrp::make ( const device_addr_t &  dev_addr )

static

Make a new multi usrp from the device address.

Parameters

dev_addr

the device address

Returns

a new single usrp object

Exceptions

uhd::key_error	no device found
uhd::index_error	fewer devices found than expected

read_register()

virtual uint64_t uhd::usrp::multi_usrp::read_register ( const std::string &  path, const uint32_t  field, const size_t  mboard = 0  )

pure virtual

Read a low-level register field from a register in the USRP hardware

Parameters

path	the full path to the register
field	the identifier of bitfield to be read
mboard	the motherboard index 0 to M-1

Returns

the value of the register field

set_clock_config()

virtual void uhd::usrp::multi_usrp::set_clock_config ( const clock_config_t &  clock_config, size_t  mboard = ALL_MBOARDS  )

pure virtual

Set the clock configuration for the usrp device. DEPRECATED in favor of set time and clock source calls. This tells the usrp how to get a 10MHz reference and PPS clock. See the documentation for clock_config_t for more info.

Parameters

clock_config	the clock configuration to set
mboard	which motherboard to set the config

set_clock_source()

virtual void uhd::usrp::multi_usrp::set_clock_source ( const std::string &  source, const size_t  mboard = ALL_MBOARDS  )

pure virtual

Set the clock source for the usrp device. This sets the source for a 10 MHz reference clock. Typical options for source: internal, external, MIMO.

Parameters

source	a string representing the clock source
mboard	which motherboard to set the config

set_clock_source_out()

virtual void uhd::usrp::multi_usrp::set_clock_source_out ( const bool  enb, const size_t  mboard = ALL_MBOARDS  )

pure virtual

Send the clock source to an output connector. This call is only applicable on devices with reference outputs. By default, the reference output will be enabled for ease of use. This call may be used to enable or disable the output.

Parameters

enb	true to output the clock source.
mboard	which motherboard to set

set_command_time()

virtual void uhd::usrp::multi_usrp::set_command_time ( const uhd::time_spec_t &  time_spec, size_t  mboard = ALL_MBOARDS  )

pure virtual

Set the time at which the control commands will take effect.

A timed command will back-pressure all subsequent timed commands, assuming that the subsequent commands occur within the time-window. If the time spec is late, the command will be activated upon arrival.

Parameters

time_spec	the time at which the next command will activate
mboard	which motherboard to set the config

set_filter()

virtual void uhd::usrp::multi_usrp::set_filter ( const std::string &  path, filter_info_base::sptr  filter  )

pure virtual

Write back a filter obtained by get_filter() to the signal path. This filter can be a modified version of the originally returned one. The information about Rx or Tx is contained in the path parameter.

Parameters

path	the name of the filter as returned from get_filter_names().
filter	the filter_info_base::sptr of the filter object to be written

set_gpio_attr()

virtual void uhd::usrp::multi_usrp::set_gpio_attr ( const std::string &  bank, const std::string &  attr, const uint32_t  value, const uint32_t  mask = 0xffffffff, const size_t  mboard = 0  )

pure virtual

Set a GPIO attribute on a particular GPIO bank. Possible attribute names:

• CTRL - 1 for ATR mode 0 for GPIO mode
• DDR - 1 for output 0 for input
• OUT - GPIO output level (not ATR mode)
• ATR_0X - ATR idle state
• ATR_RX - ATR receive only state
• ATR_TX - ATR transmit only state
• ATR_XX - ATR full duplex state

  Parameters

  bank	the name of a GPIO bank
  attr	the name of a GPIO attribute
  value	the new value for this GPIO bank
  mask	the bit mask to effect which pins are changed
  mboard	the motherboard index 0 to M-1

set_master_clock_rate()

virtual void uhd::usrp::multi_usrp::set_master_clock_rate ( double  rate, size_t  mboard = ALL_MBOARDS  )

pure virtual

Set the master clock rate.

What exactly this changes is device-dependent, but it will always affect the rate at which the ADC/DAC is running.

Like tuning receive or transmit frequencies, this call will do a best effort to change the master clock rate. The device will coerce to the closest clock rate available, and on many devices won't actually change anything at all. Call get_master_clock_rate() to see which rate was actually applied.

Note that changing this value during streaming is not recommended and can have random side effects.

If the device has an 'auto clock rate' setting (e.g. B200, see also Automatic Clock Rate Setting), calling this function will disable the automatic clock rate selection, and the clock rate will be fixed to rate.

Parameters

rate	the new master clock rate in Hz
mboard	the motherboard index 0 to M-1

set_normalized_rx_gain()

virtual void uhd::usrp::multi_usrp::set_normalized_rx_gain ( double  gain, size_t  chan = 0  )

pure virtual

Set the normalized RX gain value.

The normalized gain is a value in [0, 1], where 0 is the smallest gain value available, and 1 is the largest, independent of the device. In between, gains are linearly interpolated.

Check the individual device manual for notes on the gain range.

Note that it is not possible to specify a gain name for this function, it will always set the overall gain.

Parameters

gain	the normalized gain value
chan	the channel index 0 to N-1

Exceptions

A	uhd::runtime_error if the gain value is outside [0, 1].

set_normalized_tx_gain()

virtual void uhd::usrp::multi_usrp::set_normalized_tx_gain ( double  gain, size_t  chan = 0  )

pure virtual

Set the normalized TX gain value.

See set_normalized_rx_gain() for a discussion on normalized gains.

Parameters

gain	the normalized gain value
chan	the channel index 0 to N-1

Exceptions

A	uhd::runtime_error if the gain value is outside [0, 1].

set_rx_agc()

virtual void uhd::usrp::multi_usrp::set_rx_agc ( bool  enable, size_t  chan = 0  )

pure virtual

Enable or disable the RX AGC module. Once this module is enabled manual gain settings will be ignored. The AGC will start in a default configuration which should be good for most use cases. Device specific configuration parameters can be found in the property tree.

Parameters

enable	Enable or Disable the AGC
chan	the channel index 0 to N-1

set_rx_antenna()

virtual void uhd::usrp::multi_usrp::set_rx_antenna ( const std::string &  ant, size_t  chan = 0  )

pure virtual

Select the RX antenna on the frontend.

Parameters

ant	the antenna name
chan	the channel index 0 to N-1

set_rx_bandwidth()

virtual void uhd::usrp::multi_usrp::set_rx_bandwidth ( double  bandwidth, size_t  chan = 0  )

pure virtual

Set the RX bandwidth on the frontend.

Parameters

bandwidth	the bandwidth in Hz
chan	the channel index 0 to N-1

set_rx_dc_offset() [1/2]

virtual void uhd::usrp::multi_usrp::set_rx_dc_offset ( const bool  enb, size_t  chan = ALL_CHANS  )

pure virtual

Enable/disable the automatic RX DC offset correction. The automatic correction subtracts out the long-run average.

When disabled, the averaging option operation is halted. Once halted, the average value will be held constant until the user re-enables the automatic correction or overrides the value by manually setting the offset.

Parameters

enb	true to enable automatic DC offset correction
chan	the channel index 0 to N-1

set_rx_dc_offset() [2/2]

virtual void uhd::usrp::multi_usrp::set_rx_dc_offset ( const std::complex< double > &  offset, size_t  chan = ALL_CHANS  )

pure virtual

Set a constant RX DC offset value. The value is complex to control both I and Q. Only set this when automatic correction is disabled.

Parameters

offset	the dc offset (1.0 is full-scale)
chan	the channel index 0 to N-1

set_rx_freq()

virtual tune_result_t uhd::usrp::multi_usrp::set_rx_freq ( const tune_request_t &  tune_request, size_t  chan = 0  )

pure virtual

Set the RX center frequency.

Parameters

tune_request	tune request instructions
chan	the channel index 0 to N-1

Returns

a tune result object

set_rx_gain() [1/2]

virtual void uhd::usrp::multi_usrp::set_rx_gain ( double  gain, const std::string &  name, size_t  chan = 0  )

pure virtual

Set the RX gain value for the specified gain element. For an empty name, distribute across all gain elements.

Parameters

gain	the gain in dB
name	the name of the gain element
chan	the channel index 0 to N-1

set_rx_gain() [2/2]

void uhd::usrp::multi_usrp::set_rx_gain ( double  gain, size_t  chan = 0  )

inline

A convenience wrapper for setting overall RX gain.

set_rx_iq_balance() [1/2]

virtual void uhd::usrp::multi_usrp::set_rx_iq_balance ( const bool  enb, size_t  chan  )

pure virtual

Enable/disable the automatic IQ imbalance correction.

Parameters

enb	true to enable automatic IQ balance correction
chan	the channel index 0 to N-1

set_rx_iq_balance() [2/2]

virtual void uhd::usrp::multi_usrp::set_rx_iq_balance ( const std::complex< double > &  correction, size_t  chan = ALL_CHANS  )

pure virtual

Set the RX frontend IQ imbalance correction. Use this to adjust the magnitude and phase of I and Q.

Parameters

correction	the complex correction (1.0 is full-scale)
chan	the channel index 0 to N-1

set_rx_lo_export_enabled()

virtual void uhd::usrp::multi_usrp::set_rx_lo_export_enabled ( bool  enabled, const std::string &  name = ALL_LOS, size_t  chan = 0  )

pure virtual

Set whether the LO used by the usrp device is exported For usrps that support exportable LOs, this function configures if the LO used by chan is exported or not.

Parameters

enabled	if true then export the LO
name	the name of the LO stage to update
chan	the channel index 0 to N-1 for the source channel

set_rx_lo_freq()

virtual double uhd::usrp::multi_usrp::set_rx_lo_freq ( double  freq, const std::string &  name, size_t  chan = 0  )

pure virtual

Set the RX LO frequency (Advanced).

Parameters

freq	the frequency to set the LO to
name	the name of the LO stage to update
chan	the channel index 0 to N-1

Returns

a coerced LO frequency

set_rx_lo_source()

virtual void uhd::usrp::multi_usrp::set_rx_lo_source ( const std::string &  src, const std::string &  name = ALL_LOS, size_t  chan = 0  )

pure virtual

Set the LO source for the usrp device. For usrps that support selectable LOs, this function allows switching between them. Typical options for source: internal, external.

Parameters

src	a string representing the LO source
name	the name of the LO stage to update
chan	the channel index 0 to N-1

set_rx_rate()

virtual void uhd::usrp::multi_usrp::set_rx_rate ( double  rate, size_t  chan = ALL_CHANS  )

pure virtual

Set the RX sample rate.

Parameters

rate	the rate in Sps
chan	the channel index 0 to N-1

set_rx_subdev_spec()

virtual void uhd::usrp::multi_usrp::set_rx_subdev_spec ( const uhd::usrp::subdev_spec_t &  spec, size_t  mboard = ALL_MBOARDS  )

pure virtual

Set the RX frontend specification: The subdev spec maps a physical part of a daughter-board to a channel number. Set the subdev spec before calling into any methods with a channel number. The subdev spec must be the same size across all motherboards.

Parameters

spec	the new frontend specification
mboard	the motherboard index 0 to M-1

set_time_next_pps()

virtual void uhd::usrp::multi_usrp::set_time_next_pps ( const time_spec_t &  time_spec, size_t  mboard = ALL_MBOARDS  )

pure virtual

Set the time registers on the usrp at the next pps tick. The values will not be latched in until the pulse occurs. It is recommended that the user sleep(1) after calling to ensure that the time registers will be in a known state prior to use.

Note: Because this call sets the time on the "next" pps, the seconds in the time spec should be current seconds + 1.

Parameters

time_spec	the time to latch into the usrp device
mboard	the motherboard index 0 to M-1

set_time_now()

virtual void uhd::usrp::multi_usrp::set_time_now ( const time_spec_t &  time_spec, size_t  mboard = ALL_MBOARDS  )

pure virtual

Sets the time registers on the usrp immediately.

If only one MIMO master is present in your configuration, set_time_now is safe to use because the slave's time automatically follows the master's time. Otherwise, this call cannot set the time synchronously across multiple devices. Please use the set_time_next_pps or set_time_unknown_pps calls with a PPS signal.

Parameters

time_spec	the time to latch into the usrp device
mboard	the motherboard index 0 to M-1

set_time_source()

virtual void uhd::usrp::multi_usrp::set_time_source ( const std::string &  source, const size_t  mboard = ALL_MBOARDS  )

pure virtual

Set the time source for the usrp device. This sets the method of time synchronization, typically a pulse per second or an encoded time. Typical options for source: external, MIMO.

Parameters

source	a string representing the time source
mboard	which motherboard to set the config

set_time_source_out()

virtual void uhd::usrp::multi_usrp::set_time_source_out ( const bool  enb, const size_t  mboard = ALL_MBOARDS  )

pure virtual

Send the time source to an output connector. This call is only applicable on devices with PPS outputs. By default, the PPS output will be enabled for ease of use. This call may be used to enable or disable the output.

Parameters

enb	true to output the time source.
mboard	which motherboard to set

set_time_unknown_pps()

virtual void uhd::usrp::multi_usrp::set_time_unknown_pps ( const time_spec_t &  time_spec )

pure virtual

Synchronize the times across all motherboards in this configuration. Use this method to sync the times when the edge of the PPS is unknown.

Ex: Host machine is not attached to serial port of GPSDO and can therefore not query the GPSDO for the PPS edge.

This is a 2-step process, and will take at most 2 seconds to complete. Upon completion, the times will be synchronized to the time provided.

• Step1: wait for the last pps time to transition to catch the edge
• Step2: set the time at the next pps (synchronous for all boards)

Parameters

time_spec

the time to latch at the next pps after catching the edge

set_tx_antenna()

virtual void uhd::usrp::multi_usrp::set_tx_antenna ( const std::string &  ant, size_t  chan = 0  )

pure virtual

Select the TX antenna on the frontend.

Parameters

ant	the antenna name
chan	the channel index 0 to N-1

set_tx_bandwidth()

virtual void uhd::usrp::multi_usrp::set_tx_bandwidth ( double  bandwidth, size_t  chan = 0  )

pure virtual

Set the TX bandwidth on the frontend.

Parameters

bandwidth	the bandwidth in Hz
chan	the channel index 0 to N-1

set_tx_dc_offset()

virtual void uhd::usrp::multi_usrp::set_tx_dc_offset ( const std::complex< double > &  offset, size_t  chan = ALL_CHANS  )

pure virtual

Set a constant TX DC offset value. The value is complex to control both I and Q.

Parameters

offset	the dc offset (1.0 is full-scale)
chan	the channel index 0 to N-1

set_tx_freq()

virtual tune_result_t uhd::usrp::multi_usrp::set_tx_freq ( const tune_request_t &  tune_request, size_t  chan = 0  )

pure virtual

Set the TX center frequency.

Parameters

tune_request	tune request instructions
chan	the channel index 0 to N-1

Returns

a tune result object

set_tx_gain() [1/2]

virtual void uhd::usrp::multi_usrp::set_tx_gain ( double  gain, const std::string &  name, size_t  chan = 0  )

pure virtual

Set the TX gain value for the specified gain element. For an empty name, distribute across all gain elements.

Parameters

gain	the gain in dB
name	the name of the gain element
chan	the channel index 0 to N-1

set_tx_gain() [2/2]

void uhd::usrp::multi_usrp::set_tx_gain ( double  gain, size_t  chan = 0  )

inline

A convenience wrapper for setting overall TX gain.

set_tx_iq_balance()

virtual void uhd::usrp::multi_usrp::set_tx_iq_balance ( const std::complex< double > &  correction, size_t  chan = ALL_CHANS  )

pure virtual

Set the TX frontend IQ imbalance correction. Use this to adjust the magnitude and phase of I and Q.

Parameters

correction	the complex correction (1.0 is full-scale)
chan	the channel index 0 to N-1

set_tx_rate()

virtual void uhd::usrp::multi_usrp::set_tx_rate ( double  rate, size_t  chan = ALL_CHANS  )

pure virtual

Set the TX sample rate.

Parameters

rate	the rate in Sps
chan	the channel index 0 to N-1

set_tx_subdev_spec()

virtual void uhd::usrp::multi_usrp::set_tx_subdev_spec ( const uhd::usrp::subdev_spec_t &  spec, size_t  mboard = ALL_MBOARDS  )

pure virtual

Set the TX frontend specification: The subdev spec maps a physical part of a daughter-board to a channel number. Set the subdev spec before calling into any methods with a channel number. The subdev spec must be the same size across all motherboards.

Parameters

spec	the new frontend specification
mboard	the motherboard index 0 to M-1

set_user_register()

virtual void uhd::usrp::multi_usrp::set_user_register ( const uint8_t  addr, const uint32_t  data, size_t  mboard = ALL_MBOARDS  )

pure virtual

Perform write on the user configuration register bus. These only exist if the user has implemented custom setting registers in the device FPGA.

Parameters

addr	8-bit register address
data	32-bit register value
mboard	which motherboard to set the user register

write_register()

virtual void uhd::usrp::multi_usrp::write_register ( const std::string &  path, const uint32_t  field, const uint64_t  value, const size_t  mboard = 0  )

pure virtual

Write a low-level register field for a register in the USRP hardware

Parameters

path	the full path to the register
field	the identifier of bitfield to be written (all other bits remain unchanged)
value	the value to write to the register field
mboard	the motherboard index 0 to M-1

Member Data Documentation

ALL_CHANS

const size_t uhd::usrp::multi_usrp::ALL_CHANS = size_t(~0)

static

A wildcard channel index.

ALL_GAINS

const std::string uhd::usrp::multi_usrp::ALL_GAINS

static

A wildcard gain element name.

ALL_LOS

const std::string uhd::usrp::multi_usrp::ALL_LOS

static

A wildcard gain element name.

ALL_MBOARDS

const size_t uhd::usrp::multi_usrp::ALL_MBOARDS = size_t(~0)

static

A wildcard motherboard index.

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The documentation for this class was generated from the following file:

• include/uhd/usrp/multi_usrp.hpp