device.c File Reference

EtherCAT device methods. More...

Go to the source code of this file.

Enumerations
enum	{ EXTRA_HEADROOM = 64 }

Functions
int	ec_device_init (ec_device_t *device, ec_master_t *master)
	Constructor. More...
void	ec_device_clear (ec_device_t *device)
	Destructor. More...
void	ec_device_attach (ec_device_t *device, struct net_device *net_dev, ec_pollfunc_t poll, struct module *module)
	Associate with net_device. More...
void	ec_device_detach (ec_device_t *device)
	Disconnect from net_device. More...
int	ec_device_open (ec_device_t *device)
	Opens the EtherCAT device. More...
int	ec_device_close (ec_device_t *device)
	Stops the EtherCAT device. More...
uint8_t *	ec_device_tx_data (ec_device_t *device)
	Returns a pointer to the device's transmit memory. More...
void	ec_device_send (ec_device_t *device, size_t size)
	Sends the content of the transmit socket buffer. More...
void	ec_device_clear_stats (ec_device_t *device)
	Clears the frame statistics. More...
void	ec_device_poll (ec_device_t *device)
	Calls the poll function of the assigned net_device. More...
void	ec_device_update_stats (ec_device_t *device)
	Update device statistics. More...
void	ecdev_withdraw (ec_device_t *device)
	Withdraws an EtherCAT device from the master. More...
int	ecdev_open (ec_device_t *device)
	Opens the network device and makes the master enter IDLE phase. More...
void	ecdev_close (ec_device_t *device)
	Makes the master leave IDLE phase and closes the network device. More...
void	ecdev_receive (ec_device_t *device, const void *data, size_t size)
	Accepts a received frame. More...
void	ecdev_set_link (ec_device_t *device, uint8_t state)
	Sets a new link state. More...
uint8_t	ecdev_get_link (const ec_device_t *device)
	Reads the link state. More...

Detailed Description

EtherCAT device methods.

Definition in file device.c.

Function Documentation

ec_device_init()

int ec_device_init	(	ec_device_t *	device,
		ec_master_t *	master
	)

Constructor.

Returns

0 in case of success, else < 0

Parameters

device	EtherCAT device
master	master owning the device

Definition at line 60 of file device.c.

ec_device_clear()

void ec_device_clear

(

ec_device_t *

device

)

Destructor.

Parameters

device

EtherCAT device

Definition at line 159 of file device.c.

ec_device_attach()

void ec_device_attach	(	ec_device_t *	device,
		struct net_device *	net_dev,
		ec_pollfunc_t	poll,
		struct module *	module
	)

Associate with net_device.

Parameters

device	EtherCAT device
net_dev	net_device structure
poll	pointer to device's poll function
module	the device's module

Definition at line 179 of file device.c.

ec_device_detach()

void ec_device_detach

(

ec_device_t *

device

)

Disconnect from net_device.

Parameters

device

EtherCAT device

Definition at line 210 of file device.c.

ec_device_open()

int ec_device_open

(

ec_device_t *

device

)

Opens the EtherCAT device.

Returns

0 in case of success, else < 0

Parameters

device

EtherCAT device

Definition at line 239 of file device.c.

ec_device_close()

int ec_device_close

(

ec_device_t *

device

)

Stops the EtherCAT device.

Returns

0 in case of success, else < 0

Parameters

device

EtherCAT device

Definition at line 272 of file device.c.

ec_device_tx_data()

uint8_t* ec_device_tx_data

(

ec_device_t *

device

)

Returns a pointer to the device's transmit memory.

Returns

pointer to the TX socket buffer

Parameters

device

EtherCAT device

Definition at line 301 of file device.c.

ec_device_send()

void ec_device_send	(	ec_device_t *	device,
		size_t	size
	)

Sends the content of the transmit socket buffer.

Cuts the socket buffer content to the (now known) size, and calls the start_xmit() function of the assigned net_device.

Parameters

device	EtherCAT device
size	number of bytes to send

Definition at line 320 of file device.c.

ec_device_clear_stats()

void ec_device_clear_stats

(

ec_device_t *

device

)

Clears the frame statistics.

Parameters

device

EtherCAT device

Definition at line 359 of file device.c.

ec_device_poll()

void ec_device_poll

(

ec_device_t *

device

)

Calls the poll function of the assigned net_device.

The master itself works without using interrupts. Therefore the processing of received data and status changes of the network device has to be done by the master calling the ISR "manually".

Parameters

device

EtherCAT device

Definition at line 463 of file device.c.

ec_device_update_stats()

void ec_device_update_stats

(

ec_device_t *

device

)

Update device statistics.

Parameters

device

EtherCAT device

Definition at line 481 of file device.c.