LinuxSerialPort Class Reference
[Comms - Serial Port interface]

Serial port object for Linux. More...

Inheritance diagram for LinuxSerialPort:

[legend]

List of all members.

Public Member Functions
int	Open (unsigned port)
int	Initialise (unsigned baud)
int	Out (const uint8_t *data, size_t size, unsigned timeout)
int	In (uint8_t *data, size_t maxSize, unsigned timeout)
void	Close ()
Private Member Functions
int	Error (int defaultError=ErrorUnspecified)
Private Attributes
int	SerialHandle

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Detailed Description

Serial port object for Linux.

Version:

2009-10-02

• Made implementation of i/o functions on Linux use select() rather than hand rolled polling and sleeping.

Definition at line 61 of file serial_port.cpp.

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Member Function Documentation

int LinuxSerialPort::Open

(

unsigned

port

)

[virtual]

Open port for communications over a specified port number.

Parameters:

port

Port number.

Returns:

Zero if successful, or a negative error value if failed.

Implements SerialPort.

Definition at line 99 of file serial_port.cpp.

int LinuxSerialPort::Initialise

(

unsigned

baud

)

[virtual]

Initialise port.

Parameters:

baud

Baud rate for port.

Returns:

Zero if successful, or a negative error value if failed.

Precondition:

Open() must have been called.

Implements SerialPort.

Definition at line 144 of file serial_port.cpp.

int LinuxSerialPort::Out	(	const uint8_t *	data,
		size_t	size,
		unsigned	timeout
	)			[virtual]

Transmit data.

This function does not wait if only some of data could be transmitted, instead it returns immediately.

Parameters:

	data	Pointer to data to be transmitted.
	size	Size of data.
	timeout	Time in milliseconds to wait if output is not ready.

Returns:

Number of bytes transmitted or negative error value if failed.

Precondition:

Initialise() must have been called.

Implements SerialPort.

Definition at line 177 of file serial_port.cpp.

int LinuxSerialPort::In	(	uint8_t *	data,
		size_t	maxSize,
		unsigned	timeout
	)			[virtual]

Receive data.

Parameters:

[out]	data	Pointer to buffer to hold received data.
	maxSize	Size of data.
	timeout	Time in milliseconds to wait if no data available.

Returns:

Number of bytes received or negative error value if failed.

Precondition:

Initialise() must have been called.

Implements SerialPort.

Definition at line 219 of file serial_port.cpp.

void LinuxSerialPort::Close

(

)

[virtual]

Close port. Port must not be used again until Open() has been called.

Implements SerialPort.

Definition at line 261 of file serial_port.cpp.

int LinuxSerialPort::Error

(

int

defaultError = ErrorUnspecified

)

[private]

Process an error.

Parameters:

defaultError

The default error value to return.

Returns:

An error value from Errors

Definition at line 89 of file serial_port.cpp.

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Member Data Documentation

int LinuxSerialPort::SerialHandle [private]

File handle for serial port.

Definition at line 74 of file serial_port.cpp.

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

• comms/linux/serial_port.cpp