#include <wg_mailbox.h>

Public Member Functions
bool	initialize (EtherCAT_SlaveHandler *sh)
void	publishMailboxDiagnostics (diagnostic_updater::DiagnosticStatusWrapper &d)
int	readMailbox (EthercatCom com, unsigned address, void data, unsigned length)
	Read data from WG0X local bus using mailbox communication.
	WGMailbox ()
int	writeMailbox (EthercatCom com, unsigned address, void const data, unsigned length)
	Write data to WG0X local bus using mailbox communication.
Static Public Attributes
static const unsigned	MBX_COMMAND_PHY_ADDR = 0x1400
static const unsigned	MBX_COMMAND_SIZE = 512
static const unsigned	MBX_COMMAND_SYNCMAN_NUM = 2
static const unsigned	MBX_STATUS_PHY_ADDR = 0x2400
static const unsigned	MBX_STATUS_SIZE = 512
static const unsigned	MBX_STATUS_SYNCMAN_NUM = 3
Protected Member Functions
bool	_readMailboxRepeatRequest (EthercatCom *com)
bool	clearReadMailbox (EthercatCom *com)
	Clears read mailbox by reading first and last byte.
void	diagnoseMailboxError (EthercatCom *com)
	Runs diagnostic on read and write mailboxes.
bool	lockMailbox ()
int	readMailbox_ (EthercatCom com, unsigned address, void data, unsigned length)
	Internal function.
bool	readMailboxInternal (EthercatCom com, void data, unsigned length)
	Reads data from read mailbox.
bool	readMailboxRepeatRequest (EthercatCom *com)
void	unlockMailbox ()
bool	verifyDeviceStateForMailboxOperation ()
bool	waitForReadMailboxReady (EthercatCom *com)
	Waits until read mailbox is full or timeout.
bool	waitForWriteMailboxReady (EthercatCom *com)
	Waits until write mailbox is empty or timeout.
int	writeMailbox_ (EthercatCom com, unsigned address, void const data, unsigned length)
	Internal function.
bool	writeMailboxInternal (EthercatCom com, void const data, unsigned length)
	Writes data to mailbox.
Protected Attributes
MbxDiagnostics	mailbox_diagnostics_
pthread_mutex_t	mailbox_lock_
MbxDiagnostics	mailbox_publish_diagnostics_
EtherCAT_SlaveHandler *	sh_

Detailed Description

Definition at line 55 of file wg_mailbox.h.

Constructor & Destructor Documentation

ethercat_hardware::WGMailbox::WGMailbox ( )

Definition at line 227 of file wg_mailbox.cpp.

Member Function Documentation

bool ethercat_hardware::WGMailbox::_readMailboxRepeatRequest ( EthercatCom * com ) [protected]

Definition at line 592 of file wg_mailbox.cpp.

bool ethercat_hardware::WGMailbox::clearReadMailbox ( EthercatCom * com ) [protected]

Clears read mailbox by reading first and last byte.

Mailbox lock should be held when this function is called.

Parameters:

com	used to perform communication with device

Returns:: returns true for success, false for failure

Definition at line 277 of file wg_mailbox.cpp.

void ethercat_hardware::WGMailbox::diagnoseMailboxError ( EthercatCom * com ) [protected]

Runs diagnostic on read and write mailboxes.

Collects and data from mailbox control registers.

Todo:: not implemented yet

Parameters:

com	used to perform communication with device

Returns:: returns true for success, false for failure

Definition at line 264 of file wg_mailbox.cpp.

bool ethercat_hardware::WGMailbox::initialize ( EtherCAT_SlaveHandler * sh )

Definition at line 236 of file wg_mailbox.cpp.

bool ethercat_hardware::WGMailbox::lockMailbox ( ) [protected]

Definition at line 906 of file wg_mailbox.cpp.

void ethercat_hardware::WGMailbox::publishMailboxDiagnostics ( diagnostic_updater::DiagnosticStatusWrapper & d )

Definition at line 993 of file wg_mailbox.cpp.

int ethercat_hardware::WGMailbox::readMailbox	(	EthercatCom *	com,
		unsigned	address,
		void *	data,
		unsigned	length
	)

Read data from WG0X local bus using mailbox communication.

Internally a localbus read is done in two parts. First, a mailbox write of a command header that include local bus address and length. Second, a mailbox read of the result.

Parameters:

com	used to perform communication with device
address	WG0X (FPGA) local bus address to read from
data	pointer to buffer where read data can be stored, must be at least length in size
length	amount of data to read, limited at 511 bytes.

Returns:: returns zero for success, non-zero for failure

Definition at line 812 of file wg_mailbox.cpp.

int ethercat_hardware::WGMailbox::readMailbox_	(	EthercatCom *	com,
		unsigned	address,
		void *	data,
		unsigned	length
	)		`[protected]`

Internal function.

Aguments are the same as readMailbox() except that this assumes the mailbox lock is held.

Definition at line 831 of file wg_mailbox.cpp.

bool ethercat_hardware::WGMailbox::readMailboxInternal	(	EthercatCom *	com,
		void *	data,
		unsigned	length
	)		`[protected]`

Reads data from read mailbox.

Will try to conserve bandwidth by reading length bytes of data and last byte of mailbox. Mailbox lock should be held when this function is called.

Parameters:

com	used to perform communication with device
data	pointer to buffer where read data is stored.
length	amount of data to read from mailbox

Returns:: returns true for success, false for failure

Definition at line 681 of file wg_mailbox.cpp.

bool ethercat_hardware::WGMailbox::readMailboxRepeatRequest ( EthercatCom * com ) [protected]

Definition at line 582 of file wg_mailbox.cpp.

void ethercat_hardware::WGMailbox::unlockMailbox ( ) [protected]

Definition at line 917 of file wg_mailbox.cpp.

bool ethercat_hardware::WGMailbox::verifyDeviceStateForMailboxOperation ( ) [protected]

Definition at line 242 of file wg_mailbox.cpp.

bool ethercat_hardware::WGMailbox::waitForReadMailboxReady ( EthercatCom * com ) [protected]

Waits until read mailbox is full or timeout.

Wait times out after 100msec. Mailbox lock should be held when this function is called.

Parameters:

com	used to perform communication with device

Returns:: returns true for success, false for failure or timeout

Definition at line 359 of file wg_mailbox.cpp.

bool ethercat_hardware::WGMailbox::waitForWriteMailboxReady ( EthercatCom * com ) [protected]

Waits until write mailbox is empty or timeout.

Wait times out after 100msec. Mailbox lock should be held when this function is called.

Parameters:

com	used to perform communication with device

Returns:: returns true for success, false for failure or timeout

Definition at line 411 of file wg_mailbox.cpp.

int ethercat_hardware::WGMailbox::writeMailbox	(	EthercatCom *	com,
		unsigned	address,
		void const *	data,
		unsigned	length
	)

Write data to WG0X local bus using mailbox communication.

First, this puts a command header that include local bus address and length in write mailbox. Second it waits until device actually empties write mailbox.

Parameters:

com	used to perform communication with device
address	WG0X (FPGA) local bus address to write data to
data	pointer to buffer where write data is stored, must be at least length in size
length	amount of data to write, limited at 507 bytes

Returns:: returns zero for success, non-zero for failure

Definition at line 939 of file wg_mailbox.cpp.

int ethercat_hardware::WGMailbox::writeMailbox_	(	EthercatCom *	com,
		unsigned	address,
		void const *	data,
		unsigned	length
	)		`[protected]`

Internal function.

Aguments are the same as writeMailbox() except that this assumes the mailbox lock is held.

Definition at line 959 of file wg_mailbox.cpp.

bool ethercat_hardware::WGMailbox::writeMailboxInternal	(	EthercatCom *	com,
		void const *	data,
		unsigned	length
	)		`[protected]`

Writes data to mailbox.

Will try to conserve bandwidth by only length bytes of data and last byte of mailbox. Mailbox lock should be held when this function is called.

Parameters:

com	used to perform communication with device
data	pointer to buffer where read data is stored.
length	amount of data to read from mailbox

Returns:: returns true for success, false for failure

Definition at line 466 of file wg_mailbox.cpp.

Member Data Documentation

MbxDiagnostics ethercat_hardware::WGMailbox::mailbox_diagnostics_ [protected]

Definition at line 78 of file wg_mailbox.h.

pthread_mutex_t ethercat_hardware::WGMailbox::mailbox_lock_ [protected]

Definition at line 77 of file wg_mailbox.h.

MbxDiagnostics ethercat_hardware::WGMailbox::mailbox_publish_diagnostics_ [protected]

Definition at line 79 of file wg_mailbox.h.

const unsigned ethercat_hardware::WGMailbox::MBX_COMMAND_PHY_ADDR = 0x1400 [static]

Definition at line 65 of file wg_mailbox.h.

const unsigned ethercat_hardware::WGMailbox::MBX_COMMAND_SIZE = 512 [static]

Definition at line 66 of file wg_mailbox.h.

const unsigned ethercat_hardware::WGMailbox::MBX_COMMAND_SYNCMAN_NUM = 2 [static]

Definition at line 70 of file wg_mailbox.h.

const unsigned ethercat_hardware::WGMailbox::MBX_STATUS_PHY_ADDR = 0x2400 [static]

Definition at line 67 of file wg_mailbox.h.

const unsigned ethercat_hardware::WGMailbox::MBX_STATUS_SIZE = 512 [static]

Definition at line 68 of file wg_mailbox.h.

const unsigned ethercat_hardware::WGMailbox::MBX_STATUS_SYNCMAN_NUM = 3 [static]

Definition at line 71 of file wg_mailbox.h.

EtherCAT_SlaveHandler* ethercat_hardware::WGMailbox::sh_ [protected]

Definition at line 94 of file wg_mailbox.h.

The documentation for this class was generated from the following files:

Public Member Functions

Static Public Attributes

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation