v17_tx_state_s Struct Reference

#include <v17tx.h>

Public Attributes
int	bit_rate
	The bit rate of the modem. Valid values are 4800, 7200 and 9600.
span_get_bit_func_t	get_bit
	The callback function used to get the next bit to be transmitted.
void *	get_bit_user_data
	A user specified opaque pointer passed to the get_bit function.
span_modem_status_func_t	status_handler
	The callback function used to report modem status changes.
void *	status_user_data
	A user specified opaque pointer passed to the status function.
float	gain
	The gain factor needed to achieve the specified output power.
const complexf_t *	constellation
	A pointer to the constellation currently in use.
float	rrc_filter_re [9]
	The root raised cosine (RRC) pulse shaping filter buffer.
float	rrc_filter_im [9]
int	rrc_filter_step
	Current offset into the RRC pulse shaping filter buffer.
int	diff
	The current state of the differential encoder.
int	convolution
	The current state of the convolutional encoder.
int	constellation_state
	The code number for the current position in the constellation.
uint32_t	scramble_reg
	The register for the data scrambler.
int	scrambler_tap
	Scrambler tap.
bool	in_training
	True if transmitting the training sequence. False if transmitting user data.
bool	short_train
	True if the short training sequence is to be used.
int	training_step
	A counter used to track progress through sending the training sequence.
uint32_t	carrier_phase
	The current phase of the carrier (i.e. the DDS parameter).
int32_t	carrier_phase_rate
	The update rate for the phase of the carrier (i.e. the DDS increment).
int	baud_phase
	The current fractional phase of the baud timing.
int	bits_per_symbol
	The current number of data bits per symbol. This does not include the redundant bit.
span_get_bit_func_t	current_get_bit
	The get_bit function in use at any instant.
logging_state_t	logging
	Error and flow logging control.

Detailed Description

V.17 modem transmit side descriptor. This defines the working state for a single instance of a V.17 modem transmitter.

Member Data Documentation

baud_phase

int v17_tx_state_s::baud_phase

The current fractional phase of the baud timing.

Referenced by v17_tx(), and v17_tx_restart().

bit_rate

int v17_tx_state_s::bit_rate

The bit rate of the modem. Valid values are 4800, 7200 and 9600.

Referenced by v17_tx_restart().

bits_per_symbol

int v17_tx_state_s::bits_per_symbol

The current number of data bits per symbol. This does not include the redundant bit.

Referenced by v17_tx_restart().

carrier_phase

uint32_t v17_tx_state_s::carrier_phase

The current phase of the carrier (i.e. the DDS parameter).

Referenced by v17_tx(), and v17_tx_restart().

carrier_phase_rate

int32_t v17_tx_state_s::carrier_phase_rate

The update rate for the phase of the carrier (i.e. the DDS increment).

Referenced by v17_tx(), and v17_tx_init().

constellation

const complexf_t* v17_tx_state_s::constellation

A pointer to the constellation currently in use.

Referenced by v17_tx_restart().

constellation_state

int v17_tx_state_s::constellation_state

The code number for the current position in the constellation.

Referenced by v17_tx_restart().

convolution

int v17_tx_state_s::convolution

The current state of the convolutional encoder.

Referenced by v17_tx_restart().

current_get_bit

span_get_bit_func_t v17_tx_state_s::current_get_bit

The get_bit function in use at any instant.

Referenced by v17_tx_restart(), and v17_tx_set_get_bit().

diff

int v17_tx_state_s::diff

The current state of the differential encoder.

Referenced by v17_tx_restart().

gain

float v17_tx_state_s::gain

The gain factor needed to achieve the specified output power.

Referenced by v17_tx(), and v17_tx_power().

get_bit

span_get_bit_func_t v17_tx_state_s::get_bit

The callback function used to get the next bit to be transmitted.

Referenced by v17_tx_init(), and v17_tx_set_get_bit().

get_bit_user_data

void* v17_tx_state_s::get_bit_user_data

A user specified opaque pointer passed to the get_bit function.

Referenced by v17_tx_init(), and v17_tx_set_get_bit().

in_training

bool v17_tx_state_s::in_training

True if transmitting the training sequence. False if transmitting user data.

Referenced by v17_tx_restart().

logging

logging_state_t v17_tx_state_s::logging

Error and flow logging control.

Referenced by v17_tx_get_logging_state(), and v17_tx_init().

rrc_filter_re

float v17_tx_state_s::rrc_filter_re[9]

The root raised cosine (RRC) pulse shaping filter buffer.

Referenced by v17_tx(), and v17_tx_restart().

rrc_filter_step

int v17_tx_state_s::rrc_filter_step

Current offset into the RRC pulse shaping filter buffer.

Referenced by v17_tx(), and v17_tx_restart().

scramble_reg

uint32_t v17_tx_state_s::scramble_reg

The register for the data scrambler.

Referenced by v17_tx_restart().

scrambler_tap

int v17_tx_state_s::scrambler_tap

Scrambler tap.

Referenced by v17_tx_init(), and v32bis_init().

short_train

bool v17_tx_state_s::short_train

True if the short training sequence is to be used.

Referenced by v17_tx_restart().

status_handler

span_modem_status_func_t v17_tx_state_s::status_handler

The callback function used to report modem status changes.

Referenced by v17_tx_set_modem_status_handler().

status_user_data

void* v17_tx_state_s::status_user_data

A user specified opaque pointer passed to the status function.

Referenced by v17_tx_set_modem_status_handler().

training_step

int v17_tx_state_s::training_step

A counter used to track progress through sending the training sequence.

Referenced by v17_tx(), and v17_tx_restart().

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

• private/v17tx.h