async.c File Reference

#include <inttypes.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include "spandsp/telephony.h"
#include "spandsp/async.h"

Functions
void	async_rx_init (async_rx_state_t *s, int data_bits, int parity, int stop_bits, int use_v14, put_byte_func_t put_byte, void *user_data)
	Initialise an asynchronous data receiver context.
void	async_rx_put_bit (void *user_data, int bit)
	Accept a bit from a received serial bit stream.
void	async_tx_init (async_tx_state_t *s, int data_bits, int parity, int stop_bits, int use_v14, get_byte_func_t get_byte, void *user_data)
	Initialise an asynchronous data transmit context.
int	async_tx_get_bit (void *user_data)
	Get the next bit of a transmitted serial bit stream.

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Detailed Description

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Function Documentation

void async_rx_init (  async_rx_state_t *  s, int  data_bits, int  parity_bits, int  stop_bits, int  use_v14, put_byte_func_t  put_byte, void *  user_data )

Initialise an asynchronous data receiver context. Initialise an asynchronous data receiver context. Parameters: s  The receiver context. data_bits  The number of data bits. parity_bits  The type of parity. stop_bits  The number of stop bits. use_v14  TRUE if V.14 rate adaption processing should be used. put_byte  The callback routine used to put the received data. user_data  An opaque pointer.

void async_rx_put_bit (  void *  user_data, int  bit )

Accept a bit from a received serial bit stream. Accept a bit from a received serial bit stream Parameters: user_data  An opaque point which must point to a receiver context. bit  The new bit. Some special values are supported for this field. PUTBIT_CARRIER_UP PUTBIT_CARRIER_DOWN PUTBIT_TRAINING_SUCCEEDED PUTBIT_TRAINING_FAILED PUTBIT_END_OF_DATA

int async_tx_get_bit (  void *  user_data  )

Get the next bit of a transmitted serial bit stream. Get the next bit of a transmitted serial bit stream. Parameters: user_data  An opaque point which must point to a transmitter context. Returns: the next bit, or PUTBIT_END_OF_DATA to indicate the data stream has ended.

void async_tx_init (  async_tx_state_t *  s, int  data_bits, int  parity_bits, int  stop_bits, int  use_v14, get_byte_func_t  get_byte, void *  user_data )

Initialise an asynchronous data transmit context. Initialise an asynchronous data transmit context. Parameters: s  The transmitter context. data_bits  The number of data bit. parity_bits  The type of parity. stop_bits  The number of stop bits. use_v14  TRUE if V.14 rate adaption processing should be used. get_byte  The callback routine used to get the data to be transmitted. user_data  An opaque pointer.

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