Data Structures
struct	stateMachineParams
	List of Parameters to Personalize the State Machine. More...

Enumerations
enum	stateMachineType { Supervision, Write, Read }

enum	stateMachineState { Start, FLAG_RCV, A_RCV, C_RCV, BCC_OK, DONE }

Functions
void	stateMachineSetUp (unsigned char control, unsigned char address, enum stateMachineState state, enum stateMachineType type)
	Function to easily change the State Machine. More...

int	stateMachine (unsigned char byte, unsigned char *buf, int size)
	The StateMachine function that processes a byte and updates it's state. More...

int	processStart (unsigned char byte)
	Function to process a byte in case the state is Start. More...

int	processFLAG_RCV (unsigned char byte)
	Function to process a byte in case the state is FLAG_RCV. More...

int	processA_RCV (unsigned char byte)
	Function to process a byte in case the state is A_RCV. More...

int	processC_RCV (unsigned char byte)
	Function to process a byte in case the state is C_RCV. More...

int	processBCC_OK (unsigned char byte, unsigned char *buffer, int buffersize)
	Function to process a byte in case the state is BCC_OK. More...

Variables
static unsigned	checkBuffer [2]

static int	frameIndex

static int	wrongC

struct stateMachineParams	state_machine

Detailed Description

Enumeration Type Documentation

◆ stateMachineState

enum stateMachineState

Enumerator
Start
FLAG_RCV
A_RCV
C_RCV
BCC_OK
DONE

◆ stateMachineType

enum stateMachineType

Enumerator
Supervision
Write
Read

Function Documentation

◆ processA_RCV()

int processA_RCV ( unsigned char byte )

Function to process a byte in case the state is A_RCV.

Parameters

byte	byte to be processed

Returns: int negative value in case of error, 0 otherwise

References C_I, C_RCV, C_REJ, checkBuffer, stateMachineParams::control, FLAG, FLAG_RCV, frameIndex, log_caution(), log_error(), Read, linkLayer::sequenceNumber, Start, stateMachineParams::state, state_machine, Supervision, TRUE, stateMachineParams::type, Write, and wrongC.

Referenced by stateMachine().

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◆ processBCC_OK()

int processBCC_OK	(	unsigned char	byte,
		unsigned char **	buffer,
		int *	buffersize
	)

Function to process a byte in case the state is BCC_OK.

Parameters

byte	byte to be processed
buffer	buffer to put data if stateMachineType is Read
buffersize	variable to keeo size of buf if stateMachineType is Read

Returns: int negative value in case of error, 0 otherwise

References DONE, FLAG, linkLayer::frame, frameIndex, generateErrorBCC2(), log_error(), PROBABILITY_BCC2, Read, linkLayer::sequenceNumber, Start, stateMachineParams::state, state_machine, Supervision, T_PROP_DELAY, stateMachineParams::type, and Write.

Referenced by stateMachine().

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◆ processC_RCV()

int processC_RCV ( unsigned char byte )

Function to process a byte in case the state is C_RCV.

Parameters

byte	byte to be processed

Returns: int negative value in case of error, 0 otherwise

References BCC, BCC_OK, checkBuffer, FLAG, FLAG_RCV, frameIndex, generateErrorBCC1(), log_caution(), log_error(), PROBABILITY_BCC1, Read, Start, stateMachineParams::state, state_machine, Supervision, TRUE, stateMachineParams::type, Write, and wrongC.

Referenced by stateMachine().

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◆ processFLAG_RCV()

int processFLAG_RCV ( unsigned char byte )

Function to process a byte in case the state is FLAG_RCV.

Parameters

byte	byte to be processed

Returns: int negative value in case of error, 0 otherwise

References A_RCV, stateMachineParams::address, checkBuffer, FLAG, frameIndex, Read, Start, stateMachineParams::state, state_machine, and stateMachineParams::type.

Referenced by stateMachine().

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◆ processStart()

int processStart ( unsigned char byte )

Function to process a byte in case the state is Start.

Parameters

byte	byte to be processed

Returns: int negative value in case of error, 0 otherwise

References FALSE, FLAG, FLAG_RCV, frameIndex, Read, stateMachineParams::state, state_machine, stateMachineParams::type, and wrongC.

Referenced by stateMachine().

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◆ stateMachine()

int stateMachine	(	unsigned char	byte,
		unsigned char **	buf,
		int *	size
	)

The StateMachine function that processes a byte and updates it's state.

Parameters

byte	byte to process
buf	buffer to put data if stateMachineType is Read
size	variable to keeo size of buf if stateMachineType is Read

Returns: int negative value in case of error, 0 otherwise

References A_RCV, BCC_OK, C_RCV, DONE, FLAG_RCV, linkLayer::frame, frameIndex, log_error(), processA_RCV(), processBCC_OK(), processC_RCV(), processFLAG_RCV(), processStart(), Read, Start, stateMachineParams::state, state_machine, and stateMachineParams::type.

Referenced by readingCycle(), and writeCycle().

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◆ stateMachineSetUp()

void stateMachineSetUp	(	unsigned char	control,
		unsigned char	address,
		enum stateMachineState	state,
		enum stateMachineType	type
	)

Function to easily change the State Machine.

Parameters

control	Control Byte that is suppossed to be received
address	Address Byte that is suppossed to be received
state	State of the State Machine
type	Type of State Machine

References stateMachineParams::address, stateMachineParams::control, stateMachineParams::state, state_machine, and stateMachineParams::type.

Referenced by llread(), llwrite(), receiver_DISC_UA(), receiver_UA(), transmitter_DISC_UA(), and transmitter_SET().

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