btstack_slip.c File Reference

#include "btstack_slip.h"
#include "btstack_debug.h"

Macros
#define	__BTSTACK_FILE__   "btstack_slip.c"

Enumerations
enum	btstack_slip_decoder_state_t {   SLIP_DECODER_UNKNOWN = 1,   SLIP_DECODER_ACTIVE,   SLIP_DECODER_X_C0,   SLIP_DECODER_X_DB,   SLIP_DECODER_COMPLETE }
enum	btstack_slip_encoder_state_t {   SLIP_ENCODER_DEFAULT,   SLIP_ENCODER_SEND_DC,   SLIP_ENCODER_SEND_DD }

Functions
uint16_t	btstack_slip_decoder_frame_size (void)
	Get size of decoded frame. More...
void	btstack_slip_decoder_init (uint8_t *buffer, uint16_t max_size)
	Initialise SLIP decoder with buffer. More...
void	btstack_slip_decoder_process (uint8_t input)
	Process received byte. More...
static void	btstack_slip_decoder_reset (void)
static void	btstack_slip_decoder_store_byte (uint8_t input)
uint8_t	btstack_slip_encoder_get_byte (void)
	Get next byte from encoder. More...
int	btstack_slip_encoder_has_data (void)
	Check if encoder has data ready. More...
void	btstack_slip_encoder_start (const uint8_t *data, uint16_t len)
	Initialise SLIP encoder with data. More...

Variables
static uint8_t *	decoder_buffer
static uint16_t	decoder_max_size
static uint16_t	decoder_pos
static btstack_slip_decoder_state_t	decoder_state
static const uint8_t *	encoder_data
static uint16_t	encoder_len
static btstack_slip_encoder_state_t	encoder_state

#define __BTSTACK_FILE__   "btstack_slip.c"

enum btstack_slip_decoder_state_t

Enumerator
SLIP_DECODER_UNKNOWN
SLIP_DECODER_ACTIVE
SLIP_DECODER_X_C0
SLIP_DECODER_X_DB
SLIP_DECODER_COMPLETE

enum btstack_slip_encoder_state_t

Enumerator
SLIP_ENCODER_DEFAULT
SLIP_ENCODER_SEND_DC
SLIP_ENCODER_SEND_DD

uint16_t btstack_slip_decoder_frame_size

(

void

)

Get size of decoded frame.

Returns

size of frame. Size = 0 => frame not complete

References decoder_pos, decoder_state, and SLIP_DECODER_COMPLETE.

Referenced by hci_transport_h5_block_received().

void btstack_slip_decoder_init	(	uint8_t *	buffer,
		uint16_t	max_size
	)

Initialise SLIP decoder with buffer.

Parameters

buffer	to store received data
max_size	of buffer

References btstack_slip_decoder_reset(), buffer, decoder_buffer, and decoder_max_size.

Referenced by hci_transport_slip_init().

void btstack_slip_decoder_process

(

uint8_t

input

)

Process received byte.

Parameters

data

References btstack_slip_decoder_reset(), btstack_slip_decoder_store_byte(), BTSTACK_SLIP_SOF, decoder_pos, decoder_state, log_error, SLIP_DECODER_ACTIVE, SLIP_DECODER_COMPLETE, SLIP_DECODER_UNKNOWN, SLIP_DECODER_X_C0, and SLIP_DECODER_X_DB.

Referenced by hci_transport_h5_block_received().

static void btstack_slip_decoder_reset ( void  )

static

References decoder_pos, decoder_state, and SLIP_DECODER_UNKNOWN.

Referenced by btstack_slip_decoder_init(), btstack_slip_decoder_process(), and btstack_slip_decoder_store_byte().

static void btstack_slip_decoder_store_byte ( uint8_t  input )

static

References btstack_slip_decoder_reset(), decoder_buffer, decoder_max_size, decoder_pos, and log_error.

Referenced by btstack_slip_decoder_process().

uint8_t btstack_slip_encoder_get_byte

(

void

)

Get next byte from encoder.

Returns

Next bytes from encoder

References BTSTACK_SLIP_SOF, encoder_data, encoder_len, encoder_state, log_error, SLIP_ENCODER_DEFAULT, SLIP_ENCODER_SEND_DC, and SLIP_ENCODER_SEND_DD.

Referenced by hci_transport_slip_encode_chunk_and_send(), and hci_transport_slip_send_frame().

int btstack_slip_encoder_has_data

(

void

)

Check if encoder has data ready.

Returns

True if data ready

References encoder_len, encoder_state, and SLIP_ENCODER_DEFAULT.

Referenced by hci_transport_h5_block_sent(), hci_transport_slip_encode_chunk_and_send(), and hci_transport_slip_send_frame().

void btstack_slip_encoder_start	(	const uint8_t *	data,
		uint16_t	len
	)

Initialise SLIP encoder with data.

Parameters

data
len

References encoder_data, encoder_len, encoder_state, and SLIP_ENCODER_DEFAULT.

Referenced by hci_transport_slip_encode_chunk_and_send(), and hci_transport_slip_send_frame().

uint8_t* decoder_buffer

static

Referenced by btstack_slip_decoder_init(), and btstack_slip_decoder_store_byte().

uint16_t decoder_max_size

static

Referenced by btstack_slip_decoder_init(), and btstack_slip_decoder_store_byte().

uint16_t decoder_pos

static

Referenced by btstack_slip_decoder_frame_size(), btstack_slip_decoder_process(), btstack_slip_decoder_reset(), and btstack_slip_decoder_store_byte().

btstack_slip_decoder_state_t decoder_state

static

Referenced by btstack_slip_decoder_frame_size(), btstack_slip_decoder_process(), and btstack_slip_decoder_reset().

const uint8_t* encoder_data

static

Referenced by btstack_slip_encoder_get_byte(), and btstack_slip_encoder_start().

uint16_t encoder_len

static

Referenced by btstack_slip_encoder_get_byte(), btstack_slip_encoder_has_data(), and btstack_slip_encoder_start().

btstack_slip_encoder_state_t encoder_state

static

Referenced by btstack_slip_encoder_get_byte(), btstack_slip_encoder_has_data(), and btstack_slip_encoder_start().