EtherCAT CoE state machines. More...

Macros
#define	EC_FSM_COE_DICT_TIMEOUT 1000
	Maximum time in ms to wait for responses when reading out the dictionary.

#define	EC_COE_DOWN_REQ_HEADER_SIZE 10
	CoE download request header size.

#define	EC_COE_DOWN_SEG_REQ_HEADER_SIZE 3
	CoE download segment request header size.

#define	EC_COE_DOWN_SEG_MIN_DATA_SIZE 7
	Minimum size of download segment.

#define	DEBUG_RETRIES 0
	Enable debug output for CoE retries.

#define	DEBUG_LONG 0
	Enable warning output if transfers take too long.

Functions
void	ec_fsm_coe_dict_start (ec_fsm_coe_t fsm, ec_datagram_t datagram)
	CoE state: DICT START. More...

void	ec_fsm_coe_dict_request (ec_fsm_coe_t fsm, ec_datagram_t datagram)
	CoE state: DICT REQUEST. More...

void	ec_fsm_coe_dict_check (ec_fsm_coe_t fsm, ec_datagram_t datagram)
	CoE state: DICT CHECK. More...

void	ec_fsm_coe_dict_response (ec_fsm_coe_t fsm, ec_datagram_t datagram)
	CoE state: DICT RESPONSE. More...

void	ec_fsm_coe_dict_desc_request (ec_fsm_coe_t fsm, ec_datagram_t datagram)
	CoE state: DICT DESC REQUEST. More...

void	ec_fsm_coe_dict_desc_check (ec_fsm_coe_t fsm, ec_datagram_t datagram)
	CoE state: DICT DESC CHECK. More...

void	ec_fsm_coe_dict_desc_response (ec_fsm_coe_t fsm, ec_datagram_t datagram)
	CoE state: DICT DESC RESPONSE. More...

void	ec_fsm_coe_dict_entry_request (ec_fsm_coe_t fsm, ec_datagram_t datagram)
	CoE state: DICT ENTRY REQUEST. More...

void	ec_fsm_coe_dict_entry_check (ec_fsm_coe_t fsm, ec_datagram_t datagram)
	CoE state: DICT ENTRY CHECK. More...

void	ec_fsm_coe_dict_entry_response (ec_fsm_coe_t fsm, ec_datagram_t datagram)
	CoE state: DICT ENTRY RESPONSE. More...

void	ec_fsm_coe_down_start (ec_fsm_coe_t fsm, ec_datagram_t datagram)
	CoE state: DOWN START. More...

void	ec_fsm_coe_down_request (ec_fsm_coe_t fsm, ec_datagram_t datagram)
	CoE state: DOWN REQUEST. More...

void	ec_fsm_coe_down_check (ec_fsm_coe_t fsm, ec_datagram_t datagram)
	CoE state: DOWN CHECK. More...

void	ec_fsm_coe_down_response (ec_fsm_coe_t fsm, ec_datagram_t datagram)
	CoE state: DOWN RESPONSE. More...

void	ec_fsm_coe_down_seg_check (ec_fsm_coe_t fsm, ec_datagram_t datagram)
	CoE state: DOWN SEG CHECK. More...

void	ec_fsm_coe_down_seg_response (ec_fsm_coe_t fsm, ec_datagram_t datagram)
	CoE state: DOWN SEG RESPONSE. More...

void	ec_fsm_coe_up_start (ec_fsm_coe_t fsm, ec_datagram_t datagram)
	CoE state: UP START. More...

void	ec_fsm_coe_up_request (ec_fsm_coe_t fsm, ec_datagram_t datagram)
	CoE state: UP REQUEST. More...

void	ec_fsm_coe_up_check (ec_fsm_coe_t fsm, ec_datagram_t datagram)
	CoE state: UP CHECK. More...

void	ec_fsm_coe_up_response (ec_fsm_coe_t fsm, ec_datagram_t datagram)
	CoE state: UP RESPONSE. More...

void	ec_fsm_coe_up_seg_request (ec_fsm_coe_t fsm, ec_datagram_t datagram)
	CoE state: UP REQUEST. More...

void	ec_fsm_coe_up_seg_check (ec_fsm_coe_t fsm, ec_datagram_t datagram)
	CoE state: UP CHECK. More...

void	ec_fsm_coe_up_seg_response (ec_fsm_coe_t fsm, ec_datagram_t datagram)
	CoE state: UP RESPONSE. More...

void	ec_fsm_coe_end (ec_fsm_coe_t fsm, ec_datagram_t datagram)
	State: END. More...

void	ec_fsm_coe_error (ec_fsm_coe_t fsm, ec_datagram_t datagram)
	State: ERROR. More...

void	ec_canopen_abort_msg (const ec_slave_t *slave, uint32_t abort_code)
	Outputs an SDO abort message. More...

void	ec_fsm_coe_init (ec_fsm_coe_t *fsm)
	Constructor. More...

void	ec_fsm_coe_clear (ec_fsm_coe_t *fsm)
	Destructor. More...

void	ec_fsm_coe_dictionary (ec_fsm_coe_t fsm, ec_slave_t slave)
	Starts reading a slaves' SDO dictionary. More...

void	ec_fsm_coe_transfer (ec_fsm_coe_t fsm, ec_slave_t slave, ec_sdo_request_t *request)
	Starts to transfer an SDO to/from a slave. More...

int	ec_fsm_coe_exec (ec_fsm_coe_t fsm, ec_datagram_t datagram)
	Executes the current state of the state machine. More...

int	ec_fsm_coe_success (const ec_fsm_coe_t *fsm)
	Returns, if the state machine terminated with success. More...

int	ec_fsm_coe_check_emergency (ec_fsm_coe_t fsm, const uint8_t data, size_t size)
	Check if the received data are a CoE emergency request. More...

int	ec_fsm_coe_prepare_dict (ec_fsm_coe_t fsm, ec_datagram_t datagram)
	Prepare a dictionary request. More...

int	ec_fsm_coe_dict_prepare_desc (ec_fsm_coe_t fsm, ec_datagram_t datagram)
	Prepare an object description request. More...

int	ec_fsm_coe_dict_prepare_entry (ec_fsm_coe_t fsm, ec_datagram_t datagram)
	Prepare an entry description request. More...

int	ec_fsm_coe_prepare_down_start (ec_fsm_coe_t fsm, ec_datagram_t datagram)
	Prepare a donwnload request. More...

void	ec_fsm_coe_down_prepare_segment_request (ec_fsm_coe_t fsm, ec_datagram_t datagram)
	Prepare a download segment request. More...

int	ec_fsm_coe_prepare_up (ec_fsm_coe_t fsm, ec_datagram_t datagram)
	Prepare an upload request. More...

void	ec_fsm_coe_up_prepare_segment_request (ec_fsm_coe_t fsm, ec_datagram_t datagram)
	Prepare an SDO upload segment request. More...

Variables
const ec_code_msg_t	sdo_abort_messages []
	SDO abort messages. More...

Detailed Description

EtherCAT CoE state machines.

Definition in file fsm_coe.c.

Function Documentation

◆ ec_fsm_coe_dict_start()

void ec_fsm_coe_dict_start	(	ec_fsm_coe_t *	fsm,
		ec_datagram_t *	datagram
	)

CoE state: DICT START.

Parameters

fsm	Finite state machine.
datagram	Datagram to use.

Definition at line 333 of file fsm_coe.c.

◆ ec_fsm_coe_dict_request()

void ec_fsm_coe_dict_request	(	ec_fsm_coe_t *	fsm,
		ec_datagram_t *	datagram
	)

CoE state: DICT REQUEST.

Todo:: Timeout behavior

Parameters

fsm	Finite state machine.
datagram	Datagram to use.

Definition at line 365 of file fsm_coe.c.

◆ ec_fsm_coe_dict_check()

void ec_fsm_coe_dict_check	(	ec_fsm_coe_t *	fsm,
		ec_datagram_t *	datagram
	)

CoE state: DICT CHECK.

Parameters

fsm	Finite state machine.
datagram	Datagram to use.

Definition at line 405 of file fsm_coe.c.

◆ ec_fsm_coe_dict_response()

void ec_fsm_coe_dict_response	(	ec_fsm_coe_t *	fsm,
		ec_datagram_t *	datagram
	)

CoE state: DICT RESPONSE.

Todo:: Timeout behavior

Parameters

fsm	Finite state machine.
datagram	Datagram to use.

Definition at line 489 of file fsm_coe.c.

◆ ec_fsm_coe_dict_desc_request()

void ec_fsm_coe_dict_desc_request	(	ec_fsm_coe_t *	fsm,
		ec_datagram_t *	datagram
	)

CoE state: DICT DESC REQUEST.

Todo:: Timeout behavior

Parameters

fsm	Finite state machine.
datagram	Datagram to use.

Definition at line 644 of file fsm_coe.c.

◆ ec_fsm_coe_dict_desc_check()

void ec_fsm_coe_dict_desc_check	(	ec_fsm_coe_t *	fsm,
		ec_datagram_t *	datagram
	)

CoE state: DICT DESC CHECK.

Parameters

fsm	Finite state machine.
datagram	Datagram to use.

Definition at line 687 of file fsm_coe.c.

◆ ec_fsm_coe_dict_desc_response()

void ec_fsm_coe_dict_desc_response	(	ec_fsm_coe_t *	fsm,
		ec_datagram_t *	datagram
	)

CoE state: DICT DESC RESPONSE.

Todo:: Timeout behavior

Parameters

fsm	Finite state machine
datagram	Datagram to use.

Definition at line 774 of file fsm_coe.c.

◆ ec_fsm_coe_dict_entry_request()

void ec_fsm_coe_dict_entry_request	(	ec_fsm_coe_t *	fsm,
		ec_datagram_t *	datagram
	)

CoE state: DICT ENTRY REQUEST.

Todo:: Timeout behavior

Parameters

fsm	Finite state machine.
datagram	Datagram to use.

Definition at line 909 of file fsm_coe.c.

◆ ec_fsm_coe_dict_entry_check()

void ec_fsm_coe_dict_entry_check	(	ec_fsm_coe_t *	fsm,
		ec_datagram_t *	datagram
	)

CoE state: DICT ENTRY CHECK.

Parameters

fsm	Finite state machine.
datagram	Datagram to use.

Definition at line 951 of file fsm_coe.c.

◆ ec_fsm_coe_dict_entry_response()

void ec_fsm_coe_dict_entry_response	(	ec_fsm_coe_t *	fsm,
		ec_datagram_t *	datagram
	)

CoE state: DICT ENTRY RESPONSE.

Todo:: Timeout behavior

Parameters

fsm	Finite state machine.
datagram	Datagram to use.

Definition at line 1008 of file fsm_coe.c.

◆ ec_fsm_coe_down_start()

void ec_fsm_coe_down_start	(	ec_fsm_coe_t *	fsm,
		ec_datagram_t *	datagram
	)

CoE state: DOWN START.

Parameters

fsm	Finite state machine.
datagram	Datagram to use.

Definition at line 1282 of file fsm_coe.c.

◆ ec_fsm_coe_down_request()

void ec_fsm_coe_down_request	(	ec_fsm_coe_t *	fsm,
		ec_datagram_t *	datagram
	)

CoE state: DOWN REQUEST.

Todo:: Timeout behavior

Parameters

fsm	Finite state machine.
datagram	Datagram to use.

Definition at line 1333 of file fsm_coe.c.

◆ ec_fsm_coe_down_check()

void ec_fsm_coe_down_check	(	ec_fsm_coe_t *	fsm,
		ec_datagram_t *	datagram
	)

CoE state: DOWN CHECK.

Parameters

fsm	Finite state machine.
datagram	Datagram to use.

Definition at line 1401 of file fsm_coe.c.

◆ ec_fsm_coe_down_response()

void ec_fsm_coe_down_response	(	ec_fsm_coe_t *	fsm,
		ec_datagram_t *	datagram
	)

CoE state: DOWN RESPONSE.

Todo:: Timeout behavior

Parameters

fsm	Finite state machine.
datagram	Datagram to use.

Definition at line 1525 of file fsm_coe.c.

◆ ec_fsm_coe_down_seg_check()

void ec_fsm_coe_down_seg_check	(	ec_fsm_coe_t *	fsm,
		ec_datagram_t *	datagram
	)

CoE state: DOWN SEG CHECK.

Parameters

fsm	Finite state machine.
datagram	Datagram to use.

Definition at line 1646 of file fsm_coe.c.

◆ ec_fsm_coe_down_seg_response()

void ec_fsm_coe_down_seg_response	(	ec_fsm_coe_t *	fsm,
		ec_datagram_t *	datagram
	)

CoE state: DOWN SEG RESPONSE.

Todo:: Timeout behavior

Parameters

fsm	Finite state machine
datagram	Datagram to use.

Definition at line 1703 of file fsm_coe.c.

◆ ec_fsm_coe_up_start()

void ec_fsm_coe_up_start	(	ec_fsm_coe_t *	fsm,
		ec_datagram_t *	datagram
	)

CoE state: UP START.

Parameters

fsm	Finite state machine.
datagram	Datagram to use.

Definition at line 1871 of file fsm_coe.c.

◆ ec_fsm_coe_up_request()

void ec_fsm_coe_up_request	(	ec_fsm_coe_t *	fsm,
		ec_datagram_t *	datagram
	)

CoE state: UP REQUEST.

Todo:: Timeout behavior

Parameters

fsm	Finite state machine.
datagram	Datagram to use.

Definition at line 1903 of file fsm_coe.c.

◆ ec_fsm_coe_up_check()

void ec_fsm_coe_up_check	(	ec_fsm_coe_t *	fsm,
		ec_datagram_t *	datagram
	)

CoE state: UP CHECK.

Parameters

fsm	Finite state machine.
datagram	Datagram to use.

Definition at line 1972 of file fsm_coe.c.

◆ ec_fsm_coe_up_response()

void ec_fsm_coe_up_response	(	ec_fsm_coe_t *	fsm,
		ec_datagram_t *	datagram
	)

CoE state: UP RESPONSE.

Todo:: Timeout behavior

Parameters

fsm	Finite state machine.
datagram	Datagram to use.

Definition at line 2061 of file fsm_coe.c.

◆ ec_fsm_coe_up_seg_request()

void ec_fsm_coe_up_seg_request	(	ec_fsm_coe_t *	fsm,
		ec_datagram_t *	datagram
	)

CoE state: UP REQUEST.

Todo:: Timeout behavior

Parameters

fsm	Finite state machine.
datagram	Datagram to use.

Definition at line 2256 of file fsm_coe.c.

◆ ec_fsm_coe_up_seg_check()

void ec_fsm_coe_up_seg_check	(	ec_fsm_coe_t *	fsm,
		ec_datagram_t *	datagram
	)

CoE state: UP CHECK.

Parameters

fsm	Finite state machine.
datagram	Datagram to use.

Definition at line 2299 of file fsm_coe.c.

◆ ec_fsm_coe_up_seg_response()

void ec_fsm_coe_up_seg_response	(	ec_fsm_coe_t *	fsm,
		ec_datagram_t *	datagram
	)

CoE state: UP RESPONSE.

Todo:: Timeout behavior

Parameters

fsm	Finite state machine.
datagram	Datagram to use.

Definition at line 2359 of file fsm_coe.c.

◆ ec_fsm_coe_end()

void ec_fsm_coe_end	(	ec_fsm_coe_t *	fsm,
		ec_datagram_t *	datagram
	)

State: END.

Parameters

fsm	Finite state machine.
datagram	Datagram to use.

Definition at line 2517 of file fsm_coe.c.

◆ ec_fsm_coe_error()

void ec_fsm_coe_error	(	ec_fsm_coe_t *	fsm,
		ec_datagram_t *	datagram
	)

State: ERROR.

Parameters

fsm	Finite state machine.
datagram	Datagram to use.

Definition at line 2504 of file fsm_coe.c.

◆ ec_canopen_abort_msg()

void ec_canopen_abort_msg	(	const ec_slave_t *	slave,
		uint32_t	abort_code
	)

Outputs an SDO abort message.

Parameters

slave	Slave.
abort_code	Abort code to search for.

Definition at line 140 of file fsm_coe.c.

◆ ec_fsm_coe_init()

void ec_fsm_coe_init ( ec_fsm_coe_t * fsm )

Constructor.

Parameters

fsm	Finite state machine

Definition at line 162 of file fsm_coe.c.

◆ ec_fsm_coe_clear()

void ec_fsm_coe_clear ( ec_fsm_coe_t * fsm )

Destructor.

Parameters

fsm	Finite state machine

Definition at line 174 of file fsm_coe.c.

◆ ec_fsm_coe_dictionary()

void ec_fsm_coe_dictionary	(	ec_fsm_coe_t *	fsm,
		ec_slave_t *	slave
	)

Starts reading a slaves' SDO dictionary.

Parameters

fsm	Finite state machine
slave	EtherCAT slave

Definition at line 184 of file fsm_coe.c.

◆ ec_fsm_coe_transfer()

void ec_fsm_coe_transfer	(	ec_fsm_coe_t *	fsm,
		ec_slave_t *	slave,
		ec_sdo_request_t *	request
	)

Starts to transfer an SDO to/from a slave.

Parameters

fsm	State machine.
slave	EtherCAT slave.
request	SDO request.

Definition at line 197 of file fsm_coe.c.

◆ ec_fsm_coe_exec()

int ec_fsm_coe_exec	(	ec_fsm_coe_t *	fsm,
		ec_datagram_t *	datagram
	)

Executes the current state of the state machine.

Returns: 1 if the datagram was used, else 0.

Parameters

fsm	Finite state machine.
datagram	Datagram to use.

Definition at line 220 of file fsm_coe.c.

◆ ec_fsm_coe_success()

int ec_fsm_coe_success ( const ec_fsm_coe_t * fsm )

Returns, if the state machine terminated with success.

Returns: non-zero if successful.

Parameters

fsm	Finite state machine

Definition at line 254 of file fsm_coe.c.

◆ ec_fsm_coe_check_emergency()

int ec_fsm_coe_check_emergency	(	ec_fsm_coe_t *	fsm,
		const uint8_t *	data,
		size_t	size
	)

Check if the received data are a CoE emergency request.

If the check is positive, the emergency request is output.

Returns: The data were an emergency request.

Parameters

fsm	Finite state machine
data	CoE mailbox data.
size	CoE mailbox data size.

Definition at line 269 of file fsm_coe.c.

◆ ec_fsm_coe_prepare_dict()

int ec_fsm_coe_prepare_dict	(	ec_fsm_coe_t *	fsm,
		ec_datagram_t *	datagram
	)

Prepare a dictionary request.

Returns: Zero on success, otherwise a negative error code.

Parameters

fsm	Finite state machine.
datagram	Datagram to use.

Definition at line 307 of file fsm_coe.c.

◆ ec_fsm_coe_dict_prepare_desc()

int ec_fsm_coe_dict_prepare_desc	(	ec_fsm_coe_t *	fsm,
		ec_datagram_t *	datagram
	)

Prepare an object description request.

Returns: Zero on success, otherwise a negative error code.

Parameters

fsm	Finite state machine.
datagram	Datagram to use.

Definition at line 460 of file fsm_coe.c.

◆ ec_fsm_coe_dict_prepare_entry()

int ec_fsm_coe_dict_prepare_entry	(	ec_fsm_coe_t *	fsm,
		ec_datagram_t *	datagram
	)

Prepare an entry description request.

Returns: Zero on success, otherwise a negative error code.

Parameters

fsm	Finite state machine
datagram	Datagram to use.

Definition at line 743 of file fsm_coe.c.

◆ ec_fsm_coe_prepare_down_start()

int ec_fsm_coe_prepare_down_start	(	ec_fsm_coe_t *	fsm,
		ec_datagram_t *	datagram
	)

Prepare a donwnload request.

Returns: Zero on success, otherwise a negative error code.

Parameters

fsm	Finite state machine.
datagram	Datagram to use.

Definition at line 1187 of file fsm_coe.c.

◆ ec_fsm_coe_down_prepare_segment_request()

void ec_fsm_coe_down_prepare_segment_request	(	ec_fsm_coe_t *	fsm,
		ec_datagram_t *	datagram
	)

Prepare a download segment request.

Parameters

fsm	Finite state machine.
datagram	Datagram to use.

Definition at line 1459 of file fsm_coe.c.

◆ ec_fsm_coe_prepare_up()

int ec_fsm_coe_prepare_up	(	ec_fsm_coe_t *	fsm,
		ec_datagram_t *	datagram
	)

Prepare an upload request.

Returns: Zero on success, otherwise a negative error code.

Parameters

fsm	Finite state machine.
datagram	Datagram to use.

Definition at line 1834 of file fsm_coe.c.

◆ ec_fsm_coe_up_prepare_segment_request()

void ec_fsm_coe_up_prepare_segment_request	(	ec_fsm_coe_t *	fsm,
		ec_datagram_t *	datagram
	)

Prepare an SDO upload segment request.

Parameters

fsm	Finite state machine
datagram	Datagram to use.

Definition at line 2029 of file fsm_coe.c.

Variable Documentation

◆ sdo_abort_messages

const ec_code_msg_t sdo_abort_messages[]

SDO abort messages.

The "abort SDO transfer request" supplies an abort code, which can be translated to clear text. This table does the mapping of the codes and messages.

Definition at line 99 of file fsm_coe.c.

Macros

Functions

Variables

Detailed Description

Function Documentation

◆ ec_fsm_coe_dict_start()

◆ ec_fsm_coe_dict_request()

◆ ec_fsm_coe_dict_check()

◆ ec_fsm_coe_dict_response()

◆ ec_fsm_coe_dict_desc_request()

◆ ec_fsm_coe_dict_desc_check()

◆ ec_fsm_coe_dict_desc_response()

◆ ec_fsm_coe_dict_entry_request()

◆ ec_fsm_coe_dict_entry_check()

◆ ec_fsm_coe_dict_entry_response()

◆ ec_fsm_coe_down_start()

◆ ec_fsm_coe_down_request()

◆ ec_fsm_coe_down_check()

◆ ec_fsm_coe_down_response()

◆ ec_fsm_coe_down_seg_check()

◆ ec_fsm_coe_down_seg_response()

◆ ec_fsm_coe_up_start()

◆ ec_fsm_coe_up_request()

◆ ec_fsm_coe_up_check()

◆ ec_fsm_coe_up_response()

◆ ec_fsm_coe_up_seg_request()

◆ ec_fsm_coe_up_seg_check()

◆ ec_fsm_coe_up_seg_response()

◆ ec_fsm_coe_end()

◆ ec_fsm_coe_error()

◆ ec_canopen_abort_msg()

◆ ec_fsm_coe_init()

◆ ec_fsm_coe_clear()

◆ ec_fsm_coe_dictionary()

◆ ec_fsm_coe_transfer()

◆ ec_fsm_coe_exec()

◆ ec_fsm_coe_success()

◆ ec_fsm_coe_check_emergency()

◆ ec_fsm_coe_prepare_dict()

◆ ec_fsm_coe_dict_prepare_desc()

◆ ec_fsm_coe_dict_prepare_entry()

◆ ec_fsm_coe_prepare_down_start()

◆ ec_fsm_coe_down_prepare_segment_request()

◆ ec_fsm_coe_prepare_up()

◆ ec_fsm_coe_up_prepare_segment_request()

Variable Documentation

◆ sdo_abort_messages