domain.c File Reference

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Detailed Description

EtherCAT domain methods.

Definition in file domain.c.

Go to the source code of this file.

Functions
void	ec_domain_clear_field_regs (ec_domain_t *domain)
	Clears the list of the registered data fields.
ssize_t	ec_show_domain_attribute (struct kobject *kobj,struct attribute *attr,char *buffer)
	Formats attribute data for SysFS reading.
int	ec_domain_init (ec_domain_t *domain, ec_master_t *master, unsigned int index)
	Domain constructor.
void	ec_domain_clear (struct kobject *kobj)
	Domain destructor.
int	ec_domain_reg_field (ec_domain_t *domain, ec_slave_t *slave, const ec_sync_t *sync, uint32_t field_offset, void **data_ptr)
	Registeres a data field in a domain.
int	ec_domain_add_datagram (ec_domain_t *domain, uint32_t offset, size_t data_size)
	Allocates a process data datagram and appends it to the list.
int	ec_domain_alloc (ec_domain_t *domain, uint32_t base_address)
	Creates a domain.
void	ec_domain_response_count (ec_domain_t *domain, unsigned int count)
	Sets the number of responding slaves and outputs it on demand.
ec_slave_t *	ecrt_domain_register_field (ec_domain_t *domain, const char *address, const char *vendor_name, const char *product_name, void **data_ptr, const char *field_name, unsigned int field_index, unsigned int field_count)
	Registers a data field in a domain.
int	ecrt_domain_register_field_list (ec_domain_t *domain, const ec_field_init_t *fields)
	Registeres a bunch of data fields.
void	ecrt_domain_queue (ec_domain_t *domain)
	Places all process data datagrams in the masters datagram queue.
void	ecrt_domain_process (ec_domain_t *domain)
	Processes received process data.
int	ecrt_domain_state (ec_domain_t *domain)
	Returns the state of a domain.

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Function Documentation

void ec_domain_clear_field_regs (  ec_domain_t *   )

Clears the list of the registered data fields. Parameters: domain  EtherCAT domain Definition at line 179 of file domain.c.

ssize_t ec_show_domain_attribute (  struct kobject *  kobj, struct attribute *  attr, char *  buffer )

Formats attribute data for SysFS reading. Returns: number of bytes to read Parameters: kobj  kobject attr  attribute buffer  memory to store data in Definition at line 341 of file domain.c.

int ec_domain_init (  ec_domain_t *  domain, ec_master_t *  master, unsigned int  index )

Domain constructor. Returns: 0 in case of success, else < 0 Parameters: domain  EtherCAT domain master  owning master index  domain index Definition at line 83 of file domain.c.

void ec_domain_clear (  struct kobject *  kobj  )

Domain destructor. Parameters: kobj  kobject of the domain Definition at line 116 of file domain.c.

int ec_domain_reg_field (  ec_domain_t *  domain, ec_slave_t *  slave, const ec_sync_t *  sync, uint32_t  field_offset, void **  data_ptr )

Registeres a data field in a domain. Returns: 0 in case of success, else < 0 Parameters: domain  EtherCAT domain slave  slave sync  sync manager field_offset  data field offset data_ptr  pointer to the process data pointer Definition at line 142 of file domain.c.

int ec_domain_add_datagram (  ec_domain_t *  domain, uint32_t  offset, size_t  data_size )

Allocates a process data datagram and appends it to the list. Returns: 0 in case of success, else < 0 Parameters: domain  EtherCAT domain offset  logical offset data_size  size of the datagram data Definition at line 196 of file domain.c.

int ec_domain_alloc (  ec_domain_t *  domain, uint32_t  base_address )

Creates a domain. Reserves domain memory, calculates the logical addresses of the corresponding FMMUs and sets the process data pointer of the registered data fields. Returns: 0 in case of success, else < 0 Parameters: domain  EtherCAT domain base_address  logical base address Definition at line 229 of file domain.c.

void ec_domain_response_count (  ec_domain_t *  domain, unsigned int  count )

Sets the number of responding slaves and outputs it on demand. This number isn't really the number of responding slaves, but the sum of the working counters of all domain datagrams. Some slaves increase the working counter by 2, some by 1. Parameters: domain  EtherCAT domain count  new WC sum Definition at line 323 of file domain.c.

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