tinymodem::BaudotCodec Class Reference

Baudot (ITA2) 5-bit data. More...

#include <DataCodecs.h>

Inheritance diagram for tinymodem::BaudotCodec:

Collaboration diagram for tinymodem::BaudotCodec:

Public Member Functions
void	setUSOS (bool usos)
	Unshift on space.
void	reset () override
	resets the internal state (called when the carrier is acquired)
void	resetShift ()
int	encode (uint32_t words[2], uint8_t ch) override
	Converts a character into 0, 1 or 2 data words: returns the count.
size_t	decode (Print &out, uint64_t bits, unsigned) override
	Decodes the data bits of a frame: returns the number of written bytes.
Public Member Functions inherited from tinymodem::DataCodec
virtual	~DataCodec ()=default

Static Protected Member Functions
static const char *	decodeTable (uint8_t idx)
	letter, U.S. figs, CCITT No.2 figs (Europe)
static const uint8_t *	encodeTable (uint8_t idx)
	index: ascii char; values: bits, ltrs(1) or figs(2) or both(3)

Protected Attributes
unsigned	charset = 0
	0 unknown, 1 LTRS, 2 FIGS
bool	usos = true

Static Protected Attributes
static constexpr uint8_t	LTRS = 0x1F
static constexpr uint8_t	FIGS = 0x1B
static constexpr uint8_t	SPACE = 0x04

Detailed Description

Baudot (ITA2) 5-bit data.

Member Function Documentation

decode()

size_t tinymodem::BaudotCodec::decode ( Print & out, uint64_t bits, unsigned n_bits )

inlineoverridevirtual

Decodes the data bits of a frame: returns the number of written bytes.

Implements tinymodem::DataCodec.

decodeTable()

const char * tinymodem::BaudotCodec::decodeTable ( uint8_t idx )

inlinestaticprotected

letter, U.S. figs, CCITT No.2 figs (Europe)

encode()

int tinymodem::BaudotCodec::encode ( uint32_t words[2], uint8_t ch )

inlineoverridevirtual

Converts a character into 0, 1 or 2 data words: returns the count.

Reimplemented from tinymodem::DataCodec.

encodeTable()

const uint8_t * tinymodem::BaudotCodec::encodeTable ( uint8_t idx )

inlinestaticprotected

index: ascii char; values: bits, ltrs(1) or figs(2) or both(3)

reset()

void tinymodem::BaudotCodec::reset ( )

inlineoverridevirtual

resets the internal state (called when the carrier is acquired)

Reimplemented from tinymodem::DataCodec.

resetShift()

void tinymodem::BaudotCodec::resetShift ( )

inline

Forgets the shift state, so that the next encoded character is preceded by a LTRS or FIGS code (call at the start of each transmission)

setUSOS()

void tinymodem::BaudotCodec::setUSOS ( bool usos )

inline

Unshift on space.

Member Data Documentation

charset

unsigned tinymodem::BaudotCodec::charset = 0

protected

0 unknown, 1 LTRS, 2 FIGS

FIGS

uint8_t tinymodem::BaudotCodec::FIGS = 0x1B

staticconstexprprotected

LTRS

uint8_t tinymodem::BaudotCodec::LTRS = 0x1F

staticconstexprprotected

SPACE

uint8_t tinymodem::BaudotCodec::SPACE = 0x04

staticconstexprprotected

usos

bool tinymodem::BaudotCodec::usos = true

protected

---

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

• src/modem/DataCodecs.h