Low-level communication class to access a CAN port from company PEAK (http://www.peak-system.com) More...

#include <canserial-peak.h>

Inheritance diagram for cCANSerial_PEAK:

Public Member Functions
	cCANSerial_PEAK (unsigned long _baudrate, double _timeout, int _id_read, int _id_write, const char device="/dev/pcanusb0") throw (cCANSerial_PEAKException)
	cCANSerial_PEAK (tDeviceHandle _peak_handle, double _timeout, int _id_read, int _id_write) throw (cCANSerial_PEAKException*)
void	Close (void) throw (cCANSerial_PEAKException*)
	Close the previously opened CAN PEAK interface port.
virtual char const *	GetErrorMessage (tErrorCode dw)
virtual tErrorCode	GetErrorNumber ()
tDeviceHandle	GetHandle ()
bool	IsOpen (void) throw ()
	Return true if interface to CAN PEAK is open.
void	Open (void) throw (cCANSerial_PEAKException*)
ssize_t	Read (void data, ssize_t size, long timeout_us, bool return_on_less_data) throw (cCANSerial_PEAKException)
void	SetTimeout (double _timeout) throw (cSerialBaseException*)
	set the timeout for next readline() calls (negative value means: no timeout, wait for ever)
int	write (char const ptr, int len=0) throw (cCANSerial_PEAKException)
	Write data to a previously opened port.
	~cCANSerial_PEAK ()
	destructor: clean up
Protected Member Functions
int	BaudrateToBaudrateCode (unsigned long baudrate) throw (cCANSerial_PEAKException*)
	Translate a baudrate given as unsigned long into a baudrate code for struct termios.
Protected Attributes
unsigned long	baudrate
	the baudrate to use in bit/s
int	id_read
	the CAN ID used for reading
int	id_write
	the CAN ID used for writing
char	m_device [64]
Private Member Functions
	cCANSerial_PEAK (cCANSerial_PEAK const &other)
	private copy constructor without implementation, since copying of cCANSerial_PEAK objects makes no sense
cCANSerial_PEAK &	operator= (cCANSerial_PEAK const &rhs)
	private copy assignment operator without implementation, since copying of cCANSerial_PEAK objects makes no sense
Private Attributes
cCANSerial_PEAK_Internal *	pimpl
	ptr to private, implementation specific members (using the 'Pimpl' (pointer to implementatino) design pattern)

Detailed Description

Low-level communication class to access a CAN port from company PEAK (http://www.peak-system.com)

Since SDHLibrary-C++ release 0.0.2.0 implementation specific parts of the access to PEAK CAN devices have been removed from the header file here in order to get rid of dependencies from the Pcan_usb.h. Specifically the peak_handle of type PEAK_HANDLE member was removed. You can still provide an existing handle for reuse on construction, but you must cast your HANDLE to a tDeviceHandle. You can get the internally used PEAK_HANDLE cast to a tDeviceHandle with GetHandle().

Definition at line 78 of file canserial-peak.h.

Constructor & Destructor Documentation

cCANSerial_PEAK::cCANSerial_PEAK ( cCANSerial_PEAK const & other ) [private]

private copy constructor without implementation, since copying of cCANSerial_PEAK objects makes no sense

cCANSerial_PEAK::cCANSerial_PEAK	(	unsigned long	_baudrate,
		double	_timeout,
		int	_id_read,
		int	_id_write,
		const char *	device = `"/dev/pcanusb0"`
	)		throw (cCANSerial_PEAKException*)

Constructor: constructs an object to communicate with an SDH via CAN bus using a PEAK CAN card.

Parameters:

_baudrate	- the baudrate in bit/s. Only some bitrates are valid: (1000000,800000,500000,250000,125000,100000,50000,20000,10000)
_timeout	- the timeout in seconds (0 for no timeout = wait for ever)
_id_read	- the CAN ID to use for reading (The SDH sends data on this ID)
_id_write	- the CAN ID to use for writing (The SDH receives data on this ID)
device	- the name of the char device to communicate with the PEAD driver (Needed on Linux only!)

cCANSerial_PEAK::cCANSerial_PEAK	(	tDeviceHandle	_peak_handle,
		double	_timeout,
		int	_id_read,
		int	_id_write
	)		throw (cCANSerial_PEAKException*)

Constructor: constructs an object to communicate with an SDH via CAN bus using a PEAK CAN card by reusing an already existing handle (will work in Linux only).

Parameters:

_peak_handle	- the PEAK CAN handle to reuse (Works on Linux only!)
_timeout	- the timeout in seconds (0 for no timeout = wait for ever)
_id_read	- the CAN ID to use for reading (The SDH sends data on this ID)
_id_write	- the CAN ID to use for writing (The SDH receives data on this ID)

cCANSerial_PEAK::~cCANSerial_PEAK ( )

destructor: clean up

Member Function Documentation

int cCANSerial_PEAK::BaudrateToBaudrateCode ( unsigned long baudrate ) throw (cCANSerial_PEAKException*) [protected]

Translate a baudrate given as unsigned long into a baudrate code for struct termios.

void cCANSerial_PEAK::Close ( void ) throw (cCANSerial_PEAKException*) [virtual]

Close the previously opened CAN PEAK interface port.

Implements cSerialBase.

virtual char const* cCANSerial_PEAK::GetErrorMessage ( tErrorCode dw ) [virtual]

Overloaded helper function that returns a PEAK error message for error code dw.

Remarks:: The string returned will be overwritten by the next call to the function

Reimplemented from cSerialBase.

virtual tErrorCode cCANSerial_PEAK::GetErrorNumber ( ) [virtual]

Overloaded helper function that returns the last Peak error number.

Reimplemented from cSerialBase.

tDeviceHandle cCANSerial_PEAK::GetHandle ( )

Return the value of the HANDLE to the actual CAN device. Works on Linux only! Only returns a valid handle after a call to Open()!

Remarks:: The returned handle can be used to open a connection to a second SDH on the same CAN bus

Returns:: the handle to the actual CAN device

bool cCANSerial_PEAK::IsOpen ( void ) throw () [virtual]

Return true if interface to CAN PEAK is open.

Implements cSerialBase.

void cCANSerial_PEAK::Open ( void ) throw (cCANSerial_PEAKException*) [virtual]

Open the device as configured by the parameters given to the constructor

Implements cSerialBase.

cCANSerial_PEAK& cCANSerial_PEAK::operator= ( cCANSerial_PEAK const & rhs ) [private]

private copy assignment operator without implementation, since copying of cCANSerial_PEAK objects makes no sense

ssize_t cCANSerial_PEAK::Read	(	void *	data,
		ssize_t	size,
		long	timeout_us,
		bool	return_on_less_data
	)		throw (cCANSerial_PEAKException*) `[virtual]`

Read data from device. This function waits until max_time_us us passed or the expected number of bytes are received via serial line. if (return_on_less_data is true (default value), the number of bytes that have been received are returned and the data is stored in data If the return_on_less_data is false, data is only read from serial line, if at least size bytes are available.

Implements cSerialBase.

void cCANSerial_PEAK::SetTimeout ( double _timeout ) throw (cSerialBaseException*) [virtual]

set the timeout for next readline() calls (negative value means: no timeout, wait for ever)

Reimplemented from cSerialBase.

int cCANSerial_PEAK::write	(	char const *	ptr,
		int	len = `0`
	)		throw (cCANSerial_PEAKException*) `[virtual]`

Write data to a previously opened port.

Write len bytes from *ptr to the CAN device

Parameters:

ptr	- pointer the byte array to send in memory
len	- number of bytes to send

Returns:: the number of bytes actually written

Implements cSerialBase.

Member Data Documentation

unsigned long cCANSerial_PEAK::baudrate [protected]

the baudrate to use in bit/s

Definition at line 84 of file canserial-peak.h.

int cCANSerial_PEAK::id_read [protected]

the CAN ID used for reading

Definition at line 87 of file canserial-peak.h.

int cCANSerial_PEAK::id_write [protected]

the CAN ID used for writing

Definition at line 90 of file canserial-peak.h.

char cCANSerial_PEAK::m_device[64] [protected]

Definition at line 98 of file canserial-peak.h.

cCANSerial_PEAK_Internal* cCANSerial_PEAK::pimpl [private]

ptr to private, implementation specific members (using the 'Pimpl' (pointer to implementatino) design pattern)

Definition at line 102 of file canserial-peak.h.

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

canserial-peak.h

Public Member Functions

Protected Member Functions

Protected Attributes

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation