fsk.c File Reference

#include <stdlib.h>
#include <inttypes.h>
#include <string.h>
#include "floating_fudge.h"
#include <assert.h>
#include "spandsp/telephony.h"
#include "spandsp/complex.h"
#include "spandsp/dds.h"
#include "spandsp/power_meter.h"
#include "spandsp/async.h"
#include "spandsp/fsk.h"
#include "spandsp/private/fsk.h"

Functions

int fsk_tx_restart (fsk_tx_state_t *s, const fsk_spec_t *spec)
fsk_tx_state_tfsk_tx_init (fsk_tx_state_t *s, const fsk_spec_t *spec, get_bit_func_t get_bit, void *user_data)
 Initialise an FSK modem transmit context.
int fsk_tx_release (fsk_tx_state_t *s)
int fsk_tx_free (fsk_tx_state_t *s)
int fsk_tx (fsk_tx_state_t *s, int16_t amp[], int len)
void fsk_tx_power (fsk_tx_state_t *s, float power)
 Adjust an FSK modem transmit context's power output.
void fsk_tx_set_get_bit (fsk_tx_state_t *s, get_bit_func_t get_bit, void *user_data)
void fsk_tx_set_modem_status_handler (fsk_tx_state_t *s, modem_tx_status_func_t handler, void *user_data)
 Change the modem status report function associated with an FSK modem transmit context.
void fsk_rx_signal_cutoff (fsk_rx_state_t *s, float cutoff)
 Adjust an FSK modem receive context's carrier detect power threshold.
float fsk_rx_signal_power (fsk_rx_state_t *s)
void fsk_rx_set_put_bit (fsk_rx_state_t *s, put_bit_func_t put_bit, void *user_data)
void fsk_rx_set_modem_status_handler (fsk_rx_state_t *s, modem_tx_status_func_t handler, void *user_data)
 Change the modem status report function associated with an FSK modem receive context.
int fsk_rx_restart (fsk_rx_state_t *s, const fsk_spec_t *spec, int framing_mode)
fsk_rx_state_tfsk_rx_init (fsk_rx_state_t *s, const fsk_spec_t *spec, int framing_mode, put_bit_func_t put_bit, void *user_data)
 Initialise an FSK modem receive context.
int fsk_rx_release (fsk_rx_state_t *s)
int fsk_rx_free (fsk_rx_state_t *s)
int fsk_rx (fsk_rx_state_t *s, const int16_t *amp, int len)
int fsk_rx_fillin (fsk_rx_state_t *s, int len)

Variables

const fsk_spec_t preset_fsk_specs []

Detailed Description


Function Documentation

fsk_rx_state_t* fsk_rx_init ( fsk_rx_state_t s,
const fsk_spec_t spec,
int  framing_mode,
put_bit_func_t  put_bit,
void *  user_data 
)

Initialise an FSK modem receive context.

Initialise an FSK modem receive context.

Parameters:
s The modem context.
spec The specification of the modem tones and rate.
framing_mode 0 for fully asynchronous mode. 1 for synchronous mode. >1 for this many bits per asynchronous character frame.
put_bit The callback routine used to put the received data.
user_data An opaque pointer.
Returns:
A pointer to the modem context, or NULL if there was a problem.

void fsk_rx_set_modem_status_handler ( fsk_rx_state_t s,
modem_rx_status_func_t  handler,
void *  user_data 
)

Change the modem status report function associated with an FSK modem receive context.

Change the modem status report function associated with an FSK modem receive context.

Parameters:
s The modem context.
handler The callback routine used to report modem status changes.
user_data An opaque pointer.

void fsk_rx_signal_cutoff ( fsk_rx_state_t s,
float  cutoff 
)

Adjust an FSK modem receive context's carrier detect power threshold.

Adjust an FSK modem receive context's carrier detect power threshold.

Parameters:
s The modem context.
cutoff The power level, in dBm0

float fsk_rx_signal_power ( fsk_rx_state_t s  ) 

Get the current received signal power.

Parameters:
s The modem context.
Returns:
The signal power, in dBm0.

fsk_tx_state_t* fsk_tx_init ( fsk_tx_state_t s,
const fsk_spec_t spec,
get_bit_func_t  get_bit,
void *  user_data 
)

Initialise an FSK modem transmit context.

Initialise an FSK modem transmit context.

Parameters:
s The modem context.
spec The specification of the modem tones and rate.
get_bit The callback routine used to get the data to be transmitted.
user_data An opaque pointer.
Returns:
A pointer to the modem context, or NULL if there was a problem.

void fsk_tx_power ( fsk_tx_state_t s,
float  power 
)

Adjust an FSK modem transmit context's power output.

Adjust an FSK modem transmit context's power output.

Parameters:
s The modem context.
power The power level, in dBm0

void fsk_tx_set_modem_status_handler ( fsk_tx_state_t s,
modem_tx_status_func_t  handler,
void *  user_data 
)

Change the modem status report function associated with an FSK modem transmit context.

Change the modem status report function associated with an FSK modem transmit context.

Parameters:
s The modem context.
handler The callback routine used to report modem status changes.
user_data An opaque pointer.


Generated on Fri Nov 18 15:02:26 2011 for spandsp by  doxygen 1.4.7