uhd Namespace Reference

Namespaces
	build_info
	cal
	cast
	convert
	csv
	log
	math
	soft_reg_field
	transport
	usrp
	usrp_clock

Classes
class	analog_filter_base
class	analog_filter_lp
struct	assertion_error
struct	async_metadata_t
struct	clock_config_t
class	device
class	device3
	Extends uhd::device for third-generation USRP devices. More...
class	device_addr_t
class	dict
class	digital_filter_base
class	digital_filter_fir
class	dirty_tracked
struct	environment_error
struct	exception
class	filter_info_base
struct	fs_path
struct	gain_fcns_t
class	gain_group
class	gps_ctrl
class	i2c_iface
class	image_loader
struct	index_error
struct	io_error
class	io_type_t
struct	key_error
struct	lookup_error
class	mac_addr_t
struct	meta_range_t
class	msg_task
struct	narrowing_error
struct	not_implemented_error
struct	os_error
struct	otw_type_t
class	property
class	property_tree
class	range_t
class	ref_vector
struct	runtime_error
struct	rx_metadata_t
class	rx_streamer
struct	sensor_value_t
class	sid_t
	Represents a stream ID (SID). More...
class	simple_claimer
class	soft_register_base
class	soft_register_sync_t
class	soft_register_t
class	soft_regmap_accessor_t
class	soft_regmap_db_t
class	soft_regmap_t
struct	spi_config_t
class	spi_iface
struct	stream_args_t
struct	stream_cmd_t
struct	syntax_error
struct	system_error
class	task
class	time_spec_t
class	timed_wb_iface
struct	tune_request_t
struct	tune_result_t
struct	tx_metadata_t
class	tx_streamer
struct	type_error
class	uart_iface
struct	usb_error
struct	value_error
class	wb_iface

Typedefs
typedef std::vector< uint8_t >	byte_vector_t
	Byte vector used for I2C data passing and EEPROM parsing. More...
typedef std::vector< device_addr_t >	device_addrs_t
	A typedef for a vector of device addresses. More...
typedef std::map< std::string, std::vector< uint8_t > >	eeprom_map_t
typedef meta_range_t	gain_range_t
typedef meta_range_t	freq_range_t
typedef uint32_t	soft_reg_field_t
typedef soft_register_t< uint16_t, false, true >	soft_reg16_wo_t
typedef soft_register_t< uint16_t, true, false >	soft_reg16_ro_t
typedef soft_register_t< uint16_t, true, true >	soft_reg16_rw_t
typedef soft_register_sync_t< uint16_t, false, true >	soft_reg16_wo_sync_t
typedef soft_register_sync_t< uint16_t, true, false >	soft_reg16_ro_sync_t
typedef soft_register_sync_t< uint16_t, true, true >	soft_reg16_rw_sync_t
typedef soft_register_t< uint32_t, false, true >	soft_reg32_wo_t
typedef soft_register_t< uint32_t, true, false >	soft_reg32_ro_t
typedef soft_register_t< uint32_t, true, true >	soft_reg32_rw_t
typedef soft_register_sync_t< uint32_t, false, true >	soft_reg32_wo_sync_t
typedef soft_register_sync_t< uint32_t, true, false >	soft_reg32_ro_sync_t
typedef soft_register_sync_t< uint32_t, true, true >	soft_reg32_rw_sync_t
typedef soft_register_t< uint64_t, false, true >	soft_reg64_wo_t
typedef soft_register_t< uint64_t, true, false >	soft_reg64_ro_t
typedef soft_register_t< uint64_t, true, true >	soft_reg64_rw_t
typedef soft_register_sync_t< uint64_t, false, true >	soft_reg64_wo_sync_t
typedef soft_register_sync_t< uint64_t, true, false >	soft_reg64_ro_sync_t
typedef soft_register_sync_t< uint64_t, true, true >	soft_reg64_rw_sync_t

Enumerations
enum	direction_t { RX_DIRECTION, TX_DIRECTION, DX_DIRECTION }
enum	endianness_t { ENDIANNESS_BIG, ENDIANNESS_LITTLE }
enum	soft_reg_flush_mode_t { OPTIMIZED_FLUSH, ALWAYS_FLUSH }

Functions
UHD_API fs_path	operator/ (const fs_path &, const fs_path &)
UHD_API fs_path	operator/ (const fs_path &, size_t)
template<typename RangeSrc , typename RangeDst >
UHD_INLINE void	byte_copy (const RangeSrc &src, RangeDst &dst)
UHD_API std::string	bytes_to_string (const byte_vector_t &bytes)
	Create a string from a byte vector, terminate when invalid ASCII encountered. More...
UHD_API byte_vector_t	string_to_bytes (const std::string &str, size_t max_length)
	Create a byte vector from a string, end at null terminator or max length. More...
UHD_API device_addrs_t	separate_device_addr (const device_addr_t &dev_addr)
	Separate an indexed device address into a vector of device addresses. More...
UHD_API device_addr_t	combine_device_addrs (const device_addrs_t &dev_addrs)
	Combine a vector of device addresses into an indexed device address. More...
UHD_API std::ostream &	operator<< (std::ostream &os, filter_info_base &f)
std::ostream &	operator<< (std::ostream &out, const sid_t &sid)
	Stream output operator. Honors std::ios::hex. More...
UHD_API bool	operator== (const time_spec_t &, const time_spec_t &)
	Implement equality_comparable interface. More...
UHD_API bool	operator< (const time_spec_t &, const time_spec_t &)
	Implement less_than_comparable interface. More...
template<typename Range >
UHD_INLINE Range	sorted (const Range &range)
template<typename Range >
UHD_INLINE Range	reversed (const Range &range)
template<typename Range , typename T >
UHD_INLINE bool	has (const Range &range, const T &value)
template<typename T >
UHD_INLINE T	clip (const T &val, const T &bound1, const T &bound2)
template<typename T , typename Range >
void	assert_has (const Range &range, const T &value, const std::string &what="unknown")
template<typename T , typename Range >
UHD_INLINE void	assert_has (const Range &range, const T &value, const std::string &what)
template<typename T >
UHD_INLINE bool	spin_wait_with_timeout (std::atomic< T > &cond, const T value, const double timeout)
uint16_t	byteswap (uint16_t)
	perform a byteswap on a 16 bit integer More...
uint32_t	byteswap (uint32_t)
	perform a byteswap on a 32 bit integer More...
uint64_t	byteswap (uint64_t)
	perform a byteswap on a 64 bit integer More...
template<typename T >
T	ntohx (T)
	network to host: short, long, or long-long More...
template<typename T >
T	htonx (T)
	host to network: short, long, or long-long More...
template<typename T >
T	wtohx (T)
	worknet to host: short, long, or long-long More...
template<typename T >
T	htowx (T)
	host to worknet: short, long, or long-long More...
template<typename T >
UHD_INLINE T	ntohx (T num)
	network to host: short, long, or long-long More...
template<typename T >
UHD_INLINE T	htonx (T num)
	host to network: short, long, or long-long More...
template<typename T >
UHD_INLINE T	wtohx (T num)
	worknet to host: short, long, or long-long More...
template<typename T >
UHD_INLINE T	htowx (T num)
	host to worknet: short, long, or long-long More...
UHD_API std::string	get_tmp_path (void)
	Get a string representing the system's temporary directory. More...
UHD_API std::string	get_app_path (void)
	Get a string representing the system's appdata directory. More...
UHD_API std::string	get_pkg_path (void)
	Get a string representing the system's pkg directory. More...
UHD_API std::vector< fs::path >	get_module_paths (void)
	Get UHD library paths. More...
UHD_API std::string	get_images_dir (const std::string &search_paths)
UHD_API std::string	find_image_path (const std::string &image_name, const std::string &search_paths="")
UHD_API std::string	find_utility (const std::string &name)
UHD_API std::string	print_utility_error (const std::string &name, const std::string &args="")
int32_t	get_process_id ()
uint32_t	get_host_id ()
uint32_t	get_process_hash ()
UHD_INLINE bool	likely (bool expr)
	hint for the branch prediction More...
UHD_INLINE bool	unlikely (bool expr)
	hint for the branch prediction More...
UHD_API void	set_thread_priority (float priority=default_thread_priority, bool realtime=true)
UHD_API bool	set_thread_priority_safe (float priority=default_thread_priority, bool realtime=true)
UHD_API void	set_thread_name (boost::thread *thread, const std::string &name)

Detailed Description

Define common exceptions used throughout the code:

• The python built-in exceptions were used as inspiration.
• Exceptions inherit from std::exception to provide what().
• Exceptions inherit from uhd::exception to provide code().

The code() provides an error code which allows the application the option of printing a cryptic error message from the 1990s.

The dynamic_clone() and dynamic_throw() methods allow us to: catch an exception by dynamic type (i.e. derived class), save it, and later rethrow it, knowing only the static type (i.e. base class), and then finally to catch it again using the derived type.

http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n2106.html

Useful templated functions, classes, and constants. Some of these overlap with the STL, but these are created with Boost for portability. Many of the range wrapper functions come with versions of boost >= 1.43.

Typedef Documentation

byte_vector_t

typedef std::vector< uint8_t > uhd::byte_vector_t

Byte vector used for I2C data passing and EEPROM parsing.

Byte vector typedef for passing data in and out of I2C interfaces.

device_addrs_t

typedef std::vector<device_addr_t> uhd::device_addrs_t

A typedef for a vector of device addresses.

eeprom_map_t

typedef std::map<std::string, std::vector<uint8_t> > uhd::eeprom_map_t

freq_range_t

typedef meta_range_t uhd::freq_range_t

gain_range_t

typedef meta_range_t uhd::gain_range_t

soft_reg16_ro_sync_t

typedef soft_register_sync_t<uint16_t, true, false> uhd::soft_reg16_ro_sync_t

soft_reg16_ro_t

typedef soft_register_t<uint16_t, true, false> uhd::soft_reg16_ro_t

soft_reg16_rw_sync_t

typedef soft_register_sync_t<uint16_t, true, true> uhd::soft_reg16_rw_sync_t

soft_reg16_rw_t

typedef soft_register_t<uint16_t, true, true> uhd::soft_reg16_rw_t

soft_reg16_wo_sync_t

typedef soft_register_sync_t<uint16_t, false, true> uhd::soft_reg16_wo_sync_t

soft_reg16_wo_t

typedef soft_register_t<uint16_t, false, true> uhd::soft_reg16_wo_t

soft_reg32_ro_sync_t

typedef soft_register_sync_t<uint32_t, true, false> uhd::soft_reg32_ro_sync_t

soft_reg32_ro_t

typedef soft_register_t<uint32_t, true, false> uhd::soft_reg32_ro_t

soft_reg32_rw_sync_t

typedef soft_register_sync_t<uint32_t, true, true> uhd::soft_reg32_rw_sync_t

soft_reg32_rw_t

typedef soft_register_t<uint32_t, true, true> uhd::soft_reg32_rw_t

soft_reg32_wo_sync_t

typedef soft_register_sync_t<uint32_t, false, true> uhd::soft_reg32_wo_sync_t

soft_reg32_wo_t

typedef soft_register_t<uint32_t, false, true> uhd::soft_reg32_wo_t

soft_reg64_ro_sync_t

typedef soft_register_sync_t<uint64_t, true, false> uhd::soft_reg64_ro_sync_t

soft_reg64_ro_t

typedef soft_register_t<uint64_t, true, false> uhd::soft_reg64_ro_t

soft_reg64_rw_sync_t

typedef soft_register_sync_t<uint64_t, true, true> uhd::soft_reg64_rw_sync_t

soft_reg64_rw_t

typedef soft_register_t<uint64_t, true, true> uhd::soft_reg64_rw_t

soft_reg64_wo_sync_t

typedef soft_register_sync_t<uint64_t, false, true> uhd::soft_reg64_wo_sync_t

soft_reg64_wo_t

typedef soft_register_t<uint64_t, false, true> uhd::soft_reg64_wo_t

soft_reg_field_t

typedef uint32_t uhd::soft_reg_field_t

A register field is defined as a tuple of the mask and the shift. It can be used to make read-modify-write operations more convenient For efficiency reasons, it is recommended to always use a constant of this type because it will get optimized out by the compiler and will result in zero memory overhead

Enumeration Type Documentation

direction_t

enum uhd::direction_t

Enumerator
RX_DIRECTION	Receive.
TX_DIRECTION	Transmit.
DX_DIRECTION	Duplex.

endianness_t

enum uhd::endianness_t

Enumerator
ENDIANNESS_BIG
ENDIANNESS_LITTLE

soft_reg_flush_mode_t

enum uhd::soft_reg_flush_mode_t

Enumerator
OPTIMIZED_FLUSH
ALWAYS_FLUSH

Function Documentation

assert_has() [1/2]

template<typename T , typename Range >

UHD_INLINE void uhd::assert_has	(	const Range &	range,
		const T &	value,
		const std::string &	what = "unknown"
	)

Check that an element is found in a container. If not, throw a meaningful assertion error. The "what" in the error will show what is being set and a list of known good values.

Parameters

range	a list of possible settings
value	an element that may be in the list
what	a description of what the value is

Exceptions

assertion_error

when elem not in list

assert_has() [2/2]

template<typename T , typename Range >

void uhd::assert_has	(	const Range &	range,
		const T &	value,
		const std::string &	what = "unknown"
	)

Check that an element is found in a container. If not, throw a meaningful assertion error. The "what" in the error will show what is being set and a list of known good values.

Parameters

range	a list of possible settings
value	an element that may be in the list
what	a description of what the value is

Exceptions

assertion_error

when elem not in list

byte_copy()

template<typename RangeSrc , typename RangeDst >

UHD_INLINE void uhd::byte_copy	(	const RangeSrc &	src,
		RangeDst &	dst
	)

bytes_to_string()

UHD_API std::string uhd::bytes_to_string

(

const byte_vector_t &

bytes

)

Create a string from a byte vector, terminate when invalid ASCII encountered.

byteswap() [1/3]

UHD_INLINE uint16_t uhd::byteswap

(

uint16_t

x

)

perform a byteswap on a 16 bit integer

byteswap() [2/3]

UHD_INLINE uint32_t uhd::byteswap

(

uint32_t

x

)

perform a byteswap on a 32 bit integer

byteswap() [3/3]

UHD_INLINE uint64_t uhd::byteswap

(

uint64_t

x

)

perform a byteswap on a 64 bit integer

clip()

template<typename T >

UHD_INLINE T uhd::clip	(	const T &	val,
		const T &	bound1,
		const T &	bound2
	)

A templated clip implementation.

Parameters

val	the value to clip between an upper and lower limit
bound1	the upper or lower bound
bound2	the upper or lower bound

Returns

the value clipped at the bounds

combine_device_addrs()

UHD_API device_addr_t uhd::combine_device_addrs

(

const device_addrs_t &

dev_addrs

)

Combine a vector of device addresses into an indexed device address.

find_image_path()

UHD_API std::string uhd::find_image_path	(	const std::string &	image_name,
		const std::string &	search_paths = ""
	)

Return the full path to particular UHD binary image.

This function searches for the passed image name, and returns an absolute path to it. The returned path is guaranteed to exist. The caller can also provide a full path to the image in the argument, and this function will validate it and convert it to an absolute system path.

Parameters

image_name	The name of the file to search for, or the full path.
search_paths	Hints / paths to use when calling get_images_dir

Returns

the full system path to the file

Exceptions

exception

uhd::io_error if the file was not found.

find_utility()

UHD_API std::string uhd::find_utility

(

const std::string &

name

)

Search for the location of a particular UHD utility. The utility must be installed in the uhd/utils directory.

Parameters

name	the name of the utility to search for

Returns

the full system path to the given utility

get_app_path()

UHD_API std::string uhd::get_app_path

(

void

)

Get a string representing the system's appdata directory.

get_host_id()

uint32_t uhd::get_host_id

(

)

get_images_dir()

UHD_API std::string uhd::get_images_dir

(

const std::string &

search_paths

)

Return the UHD images directory path.

This function returns the UHD images installation path on this system. The returned directory path is guaranteed to exist (assuming a valid path is found). This function will look for a directory that exists using this order of precedence:

1) UHD_IMAGES_DIR environment variable 2) Any paths passed to this function via `search_paths' 3) UHD package path / share / uhd / images

The search_paths parameter may contain Windows registry keys. If no directory is found, an empty string is returned.

Parameters

search_paths

A comma-separated list of hints for paths to include.

Returns

A path string if one is found, or an empty string on failure.

get_module_paths()

UHD_API std::vector<fs::path> uhd::get_module_paths

(

void

)

Get UHD library paths.

get_pkg_path()

UHD_API std::string uhd::get_pkg_path

(

void

)

Get a string representing the system's pkg directory.

get_process_hash()

uint32_t uhd::get_process_hash

(

)

get_process_id()

int32_t uhd::get_process_id

(

)

get_tmp_path()

UHD_API std::string uhd::get_tmp_path

(

void

)

Get a string representing the system's temporary directory.

has()

template<typename Range , typename T >

UHD_INLINE bool uhd::has	(	const Range &	range,
		const T &	value
	)

Is the value found within the elements in this range?

Uses std::find to search the iterable for an element.

Parameters

range	the elements to search through
value	the match to look for in the range

Returns

true when the value is found in the range

htonx() [1/2]

template<typename T >

T uhd::htonx

(

T

)

host to network: short, long, or long-long

htonx() [2/2]

template<typename T >

UHD_INLINE T uhd::htonx

(

T

num

)

host to network: short, long, or long-long

htowx() [1/2]

template<typename T >

T uhd::htowx

(

T

)

host to worknet: short, long, or long-long

htowx() [2/2]

template<typename T >

UHD_INLINE T uhd::htowx

(

T

num

)

host to worknet: short, long, or long-long

likely()

UHD_INLINE bool uhd::likely

(

bool

expr

)

hint for the branch prediction

ntohx() [1/2]

template<typename T >

T uhd::ntohx

(

T

)

network to host: short, long, or long-long

ntohx() [2/2]

template<typename T >

UHD_INLINE T uhd::ntohx

(

T

num

)

network to host: short, long, or long-long

operator/() [1/2]

UHD_API fs_path uhd::operator/	(	const fs_path &	,
		const fs_path &
	)

operator/() [2/2]

UHD_API fs_path uhd::operator/	(	const fs_path &	,
		size_t
	)

operator<()

UHD_API bool uhd::operator<	(	const time_spec_t &	,
		const time_spec_t &
	)

Implement less_than_comparable interface.

operator<<() [1/2]

UHD_API std::ostream& uhd::operator<<	(	std::ostream &	os,
		filter_info_base &	f
	)

operator<<() [2/2]

std::ostream& uhd::operator<< ( std::ostream &  out, const sid_t &  sid  )

inline

Stream output operator. Honors std::ios::hex.

operator==()

UHD_API bool uhd::operator==	(	const time_spec_t &	,
		const time_spec_t &
	)

Implement equality_comparable interface.

print_utility_error()

UHD_API std::string uhd::print_utility_error	(	const std::string &	name,
		const std::string &	args = ""
	)

Return an error string recommending the user run the utility. The error string will include the full path to the utility to run.

Returns

the message suggesting the use of the named utility.

reversed()

template<typename Range >

UHD_INLINE Range uhd::reversed

(

const Range &

range

)

A wrapper around std::reverse that takes a range instead of an iterator.

The elements are reversed into descending order using the less-than operator. This wrapper reverses the elements non-destructively into a new range. Based on the builtin python function reversed(...)

Parameters

range

the range of elements to be reversed

Returns

a new range with the elements reversed

separate_device_addr()

UHD_API device_addrs_t uhd::separate_device_addr

(

const device_addr_t &

dev_addr

)

Separate an indexed device address into a vector of device addresses.

set_thread_name()

UHD_API void uhd::set_thread_name	(	boost::thread *	thread,
		const std::string &	name
	)

Set the thread name on the given boost thread.

Parameters

thread	pointer to a boost thread
name	thread name with maximum length of 16 characters

set_thread_priority()

UHD_API void uhd::set_thread_priority	(	float	priority = default_thread_priority,
		bool	realtime = true
	)

Set the scheduling priority on the current thread.

A new thread or calling process should make this call with the defaults this to enable realtime scheduling.

A priority of zero corresponds to normal priority. Positive priority values are higher than normal. Negative priority values are lower than normal.

Parameters

priority	a value between -1 and 1
realtime	true to use realtime mode

Exceptions

exception

on set priority failure

set_thread_priority_safe()

UHD_API bool uhd::set_thread_priority_safe	(	float	priority = default_thread_priority,
		bool	realtime = true
	)

Set the scheduling priority on the current thread. Same as set_thread_priority but does not throw on failure.

Returns

true on success, false on failure

sorted()

template<typename Range >

UHD_INLINE Range uhd::sorted

(

const Range &

range

)

A wrapper around std::sort that takes a range instead of an iterator.

The elements are sorted into ascending order using the less-than operator. This wrapper sorts the elements non-destructively into a new range. Based on the builtin python function sorted(...)

Parameters

range

the range of elements to be sorted

Returns

a new range with the elements sorted

spin_wait_with_timeout()

template<typename T >

UHD_INLINE bool uhd::spin_wait_with_timeout	(	std::atomic< T > &	cond,
		const T	value,
		const double	timeout
	)

DEPRECATED – Will be removed in coming versions of UHD.

Spin-wait on a condition with a timeout.

Parameters

cond	an atomic variable to compare
value	compare to atomic for true/false
timeout	the timeout in seconds

Returns

true for cond == value, false for timeout

string_to_bytes()

UHD_API byte_vector_t uhd::string_to_bytes	(	const std::string &	str,
		size_t	max_length
	)

Create a byte vector from a string, end at null terminator or max length.

unlikely()

UHD_INLINE bool uhd::unlikely

(

bool

expr

)

hint for the branch prediction

wtohx() [1/2]

template<typename T >

T uhd::wtohx

(

T

)

worknet to host: short, long, or long-long

wtohx() [2/2]

template<typename T >

UHD_INLINE T uhd::wtohx

(

T

num

)

worknet to host: short, long, or long-long