datagram_pair.h File Reference

EtherCAT datagram pair structure. More...

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Data Structures
struct	ec_datagram_pair_t
	Domain datagram pair. More...

Functions
int	ec_datagram_pair_init (ec_datagram_pair_t *, ec_domain_t *, uint32_t, uint8_t *, size_t, const unsigned int[])
	Datagram pair constructor.
void	ec_datagram_pair_clear (ec_datagram_pair_t *)
	Datagram pair destructor.
uint16_t	ec_datagram_pair_process (ec_datagram_pair_t *, uint16_t[])
	Process received data.

Detailed Description

EtherCAT datagram pair structure.

Definition in file datagram_pair.h.

Function Documentation

ec_datagram_pair_init()

int ec_datagram_pair_init	(	ec_datagram_pair_t *	pair,
		ec_domain_t *	domain,
		uint32_t	logical_offset,
		uint8_t *	data,
		size_t	data_size,
		const unsigned int	used[] )

Datagram pair constructor.

Returns

Zero on success, otherwise a negative error code.

Parameters

pair	Datagram pair.
domain	Parent domain.
logical_offset	Logical offset.
data	Data pointer.
data_size	Data size.
used	input/output use count.

Definition at line 40 of file datagram_pair.c.

ec_datagram_pair_clear()

void ec_datagram_pair_clear

(

ec_datagram_pair_t *

pair

)

Datagram pair destructor.

Parameters

pair	Datagram pair.

Definition at line 143 of file datagram_pair.c.

ec_datagram_pair_process()

uint16_t ec_datagram_pair_process	(	ec_datagram_pair_t *	pair,
		uint16_t	wc_sum[] )

Process received data.

Returns

Working counter sum over all devices.

Parameters

pair	Datagram pair.
wc_sum	Working counter sums.

Definition at line 168 of file datagram_pair.c.