#include <uhd/rfnoc/fft_block_control.hpp>

Inheritance diagram for uhd::rfnoc::fft_block_control:

Public Member Functions
virtual void	set_direction (const fft_direction direction)=0

virtual fft_direction	get_direction () const =0

virtual void	set_magnitude (const fft_magnitude magnitude)=0

virtual fft_magnitude	get_magnitude () const =0

virtual void	set_shift_config (const fft_shift shift)=0

virtual fft_shift	get_shift_config () const =0

virtual void	set_scaling (const uint16_t scaling)=0

virtual uint16_t	get_scaling () const =0

virtual void	set_length (const size_t length)=0

virtual size_t	get_length () const =0

Public Member Functions inherited from uhd::rfnoc::noc_block_base
	~noc_block_base () override

std::string	get_unique_id () const override
	Unique ID for an RFNoC block is its block ID. More...

size_t	get_num_input_ports () const override
	Number of input ports. Note: This gets passed into this block from the. More...

size_t	get_num_output_ports () const override
	Number of output ports. Note: This gets passed outto this block from the. More...

noc_id_t	get_noc_id () const

const block_id_t &	get_block_id () const

double	get_tick_rate () const

size_t	get_mtu (const res_source_info &edge)

uhd::device_addr_t	get_block_args () const

uhd::property_tree::sptr &	get_tree () const
	Return a reference to this block's subtree. More...

uhd::property_tree::sptr &	get_tree ()
	Return a reference to this block's subtree (non-const version) More...

Public Member Functions inherited from uhd::rfnoc::node_t
	node_t ()

virtual	~node_t ()

virtual std::string	get_unique_id () const
	Return a unique identifier string for this node. In every RFNoC graph,. More...

virtual size_t	get_num_input_ports () const =0

virtual size_t	get_num_output_ports () const =0

std::vector< std::string >	get_property_ids () const

template<typename prop_data_t >
void	set_property (const std::string &id, const prop_data_t &val, const size_t instance=0)

void	set_properties (const uhd::device_addr_t &props, const size_t instance=0)

template<typename prop_data_t >
const prop_data_t &	get_property (const std::string &id, const size_t instance=0)

virtual void	set_command_time (uhd::time_spec_t time, const size_t instance)

virtual uhd::time_spec_t	get_command_time (const size_t instance) const

virtual void	clear_command_time (const size_t instance)

Public Member Functions inherited from uhd::rfnoc::register_iface_holder
	register_iface_holder (register_iface::sptr reg)

virtual	~register_iface_holder ()=default

register_iface &	regs ()

Static Public Attributes
static const uint32_t	REG_RESET_ADDR

static const uint32_t	REG_LENGTH_LOG2_ADDR

static const uint32_t	REG_MAGNITUDE_OUT_ADDR

static const uint32_t	REG_DIRECTION_ADDR

static const uint32_t	REG_SCALING_ADDR

static const uint32_t	REG_SHIFT_CONFIG_ADDR

Static Public Attributes inherited from uhd::rfnoc::node_t
static const size_t	ANY_PORT = size_t(~0)

Additional Inherited Members
Public Types inherited from uhd::rfnoc::noc_block_base
using	sptr = std::shared_ptr< noc_block_base >

using	make_args_ptr = std::unique_ptr< make_args_t >
	Opaque pointer to the constructor arguments. More...

Public Types inherited from uhd::rfnoc::node_t
enum class	forwarding_policy_t { ONE_TO_ONE , ONE_TO_FAN , ONE_TO_ALL_IN , ONE_TO_ALL_OUT , ONE_TO_ALL , DROP , USE_MAP }
	Types of property/action forwarding for those not defined by the block itself. More...

using	resolver_fn_t = std::function< void(void)>

using	resolve_callback_t = std::function< void(void)>

using	action_handler_t = std::function< void(const res_source_info &, action_info::sptr)>

using	forwarding_map_t = std::unordered_map< res_source_info, std::vector< res_source_info > >

Protected Types inherited from uhd::rfnoc::node_t
using	prop_ptrs_t = std::unordered_set< property_base_t * >

Protected Member Functions inherited from uhd::rfnoc::noc_block_base
	noc_block_base (make_args_ptr make_args)

void	set_num_input_ports (const size_t num_ports)
	Update number of input ports. More...

void	set_num_output_ports (const size_t num_ports)
	Update number of output ports. More...

void	set_tick_rate (const double tick_rate)

void	set_mtu_forwarding_policy (const forwarding_policy_t policy)

void	set_mtu (const res_source_info &edge, const size_t new_mtu)

property_base_t *	get_mtu_prop_ref (const res_source_info &edge)

std::shared_ptr< mb_controller >	get_mb_controller ()

virtual void	deinit ()

Protected Member Functions inherited from uhd::rfnoc::node_t
void	register_property (property_base_t *prop, resolve_callback_t &&clean_callback=nullptr)

void	add_property_resolver (prop_ptrs_t &&inputs, prop_ptrs_t &&outputs, resolver_fn_t &&resolver_fn)

void	set_prop_forwarding_policy (forwarding_policy_t policy, const std::string &prop_id="")

void	set_prop_forwarding_map (const forwarding_map_t &map)

template<typename prop_data_t >
void	set_property (const std::string &id, const prop_data_t &val, const res_source_info &src_info)

template<typename prop_data_t >
const prop_data_t &	get_property (const std::string &id, const res_source_info &src_info)

void	register_action_handler (const std::string &id, action_handler_t &&handler)

void	set_action_forwarding_policy (forwarding_policy_t policy, const std::string &action_key="")

void	set_action_forwarding_map (const forwarding_map_t &map)

void	post_action (const res_source_info &edge_info, action_info::sptr action)

virtual bool	check_topology (const std::vector< size_t > &connected_inputs, const std::vector< size_t > &connected_outputs)

virtual void	shutdown ()

Protected Member Functions inherited from uhd::rfnoc::register_iface_holder
void	update_reg_iface (register_iface::sptr new_iface=nullptr)

Static Protected Attributes inherited from uhd::rfnoc::node_t
static dirtifier_t	ALWAYS_DIRTY
	A dirtifyer object, useful for properties that always need updating. More...

Detailed Description

FFT Block Control Class

The FFT block is an RFNoC block that accepts signed complex 16-bit data at its input and computes the forward or reverse FFT of the input data, outputting signed complex 16-bit data at its output. The output data may be configured as complex, magnitude, or mag-squared values, its spectrum shifted and/or reversed, and scaled by a scaled factor.

The FFT length is configured via the length parameter, up to a maximum of 2048 samples. The FFT IP requires a power-of-two number of samples; the length will be coerced to the closest power of two which is smaller than length. The block will output packets of the same length in the desired format as configured via the API.

Member Function Documentation

◆ get_direction()

virtual fft_direction uhd::rfnoc::fft_block_control::get_direction ( ) const

pure virtual

Get the FFT direction

Returns the current direction of the FFT.

Returns: FFT direction

◆ get_length()

virtual size_t uhd::rfnoc::fft_block_control::get_length ( ) const

pure virtual

Get the length of the FFT

Returns the current length of the FFT.

Returns: Current FFT length

◆ get_magnitude()

virtual fft_magnitude uhd::rfnoc::fft_block_control::get_magnitude ( ) const

pure virtual

Get the format of the returned FFT output data

Returns the current output format of the FFT data.

Returns: Format of the returned FFT output data

◆ get_scaling()

virtual uint16_t uhd::rfnoc::fft_block_control::get_scaling ( ) const

pure virtual

Get the scaling schedule for the FFT block

Returns the current scaling schedule for the FFT block.

Returns: Scaling schedule for the FFT block

◆ get_shift_config()

virtual fft_shift uhd::rfnoc::fft_block_control::get_shift_config ( ) const

pure virtual

Get the shift configuration of the output FFT data

Returns the current shift configuration of the output FFT data.

Returns: Shift configuration of the output FFT data

◆ set_direction()

virtual void uhd::rfnoc::fft_block_control::set_direction ( const fft_direction direction )

pure virtual

Set the FFT direction

Sets the direction of the FFT, either forward (FORWARD) or inverse (REVERSE).

Parameters

direction FFT direction

◆ set_length()

virtual void uhd::rfnoc::fft_block_control::set_length ( const size_t length )

pure virtual

Set the length of the FFT

Sets the length of the FFT in number of samples. Note that the FFT IP requires a power-of-two number of samples; the incoming value will be coerced to the closest smaller power of two.

Parameters

length Desired FFT length

◆ set_magnitude()

virtual void uhd::rfnoc::fft_block_control::set_magnitude ( const fft_magnitude magnitude )

pure virtual

Set the format of the returned FFT output data

Sets the format in which the FFT output data is returned. The following formats are supported:

* amplitude/phase data (COMPLEX)
* magnitude data (MAGNITUDE)
* mag-squared data (MAGNITUDE_SQUARED)

Parameters

magnitude Format of the returned FFT output data

◆ set_scaling()

virtual void uhd::rfnoc::fft_block_control::set_scaling ( const uint16_t scaling )

pure virtual

Set the scaling schedule for the FFT block

Sets the scaling for each stage of the FFT. This value maps directly to the scale schedule field in the configuration channel data that is passed to the Xilinx AXI FFT IP. For more information on the format of this data, see Xilinx document PG109, Fast Fourier Transform LogiCORE IP Product Guide.

Parameters

scaling Scaling schedule for the FFT block

◆ set_shift_config()

virtual void uhd::rfnoc::fft_block_control::set_shift_config ( const fft_shift shift )

pure virtual

Set the shift configuration of the output FFT data

Sets how the FFT output data is shifted (to get the zero frequency bin to the center of the output data). The following output data shift configurations are supported:

* Negative frequencies first, then positive frequencies (NORMAL)
* Positive frequencies first, then negative frequencies (REVERSE)
* Bypass the shift altogether, leaving the zero frequency bin
  returned first (NATURAL).

Parameters

shift Configuration for shifting FFT output data

Member Data Documentation

◆ REG_DIRECTION_ADDR

const uint32_t uhd::rfnoc::fft_block_control::REG_DIRECTION_ADDR

static

◆ REG_LENGTH_LOG2_ADDR

const uint32_t uhd::rfnoc::fft_block_control::REG_LENGTH_LOG2_ADDR

static

◆ REG_MAGNITUDE_OUT_ADDR

const uint32_t uhd::rfnoc::fft_block_control::REG_MAGNITUDE_OUT_ADDR

static

◆ REG_RESET_ADDR

const uint32_t uhd::rfnoc::fft_block_control::REG_RESET_ADDR

static

◆ REG_SCALING_ADDR

const uint32_t uhd::rfnoc::fft_block_control::REG_SCALING_ADDR

static

◆ REG_SHIFT_CONFIG_ADDR

const uint32_t uhd::rfnoc::fft_block_control::REG_SHIFT_CONFIG_ADDR

static

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

include/uhd/rfnoc/fft_block_control.hpp

Public Member Functions

Static Public Attributes

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ get_direction()

◆ get_length()

◆ get_magnitude()

◆ get_scaling()

◆ get_shift_config()

◆ set_direction()

◆ set_length()

◆ set_magnitude()

◆ set_scaling()

◆ set_shift_config()

Member Data Documentation

◆ REG_DIRECTION_ADDR

◆ REG_LENGTH_LOG2_ADDR

◆ REG_MAGNITUDE_OUT_ADDR

◆ REG_RESET_ADDR

◆ REG_SCALING_ADDR

◆ REG_SHIFT_CONFIG_ADDR