SerialStream Class Reference

Console (VT100 compatible) via Serial interface. More...

#include <serialstream.h>

Inheritance diagram for SerialStream:

Collaboration diagram for SerialStream:

Public Types
enum	Attrib {   RESET = 0 , BRIGHT = 1 , DIM = 2 , UNDERSCORE = 4 ,   BLINK = 5 , REVERSE = 7 , HIDDEN = 8 }
	Attributes can be used to influence the display of the output. More...
enum	Color
	Color codes. More...
Public Types inherited from Serial
enum	ComPort
	COM-Port. More...
enum	BaudRate
	Transmission speed. More...
enum	DataBits
	Number of data bits per character.
enum	StopBits
	Number of stop bits per character.
enum	Parity
	parity bit

Public Member Functions
	SerialStream (ComPort port=COM1, BaudRate baud_rate=BAUD_115200, DataBits data_bits=DATA_8BIT, StopBits stop_bits=STOP_1BIT, Parity parity=PARITY_NONE)
	Constructor for the VT100-compatible console.
void	flush () override
	Method to output the buffer contents of the base class Stringbuffer.
void	setForeground (Color c)
	Change foreground color (for subsequent output)
void	setBackground (Color c)
	Change background color (for subsequent output)
void	setAttribute (Attrib a)
	Change text attribute (for subsequent output)
void	reset ()
	Reset terminal.
void	setPos (int x, int y)
	Set the cursor position.
void	print (char *str, int length)
	Display multiple characters in the window starting at the current cursor position.
Public Member Functions inherited from OutputStream
	OutputStream ()
	Default constructor. Initial number system is decimal.
virtual	~OutputStream ()
	Destructor.
virtual void	flush ()=0
	Clears the buffer.
OutputStream &	operator<< (char c)
	Print a single character.
OutputStream &	operator<< (unsigned char c)
	Print a single character.
OutputStream &	operator<< (const char *string)
	Printing a null-terminated string.
OutputStream &	operator<< (bool b)
	Print a boolean value.
OutputStream &	operator<< (short ival)
	Print an integral number in radix base.
OutputStream &	operator<< (unsigned short ival)
	Print an integral number in radix base.
OutputStream &	operator<< (int ival)
	Print an integral number in radix base.
OutputStream &	operator<< (unsigned int ival)
	Print an integral number in radix base.
OutputStream &	operator<< (long ival)
	Print an integral number in radix base.
OutputStream &	operator<< (unsigned long ival)
	Print an integral number in radix base.
OutputStream &	operator<< (long long ival)
	Print an integral number in radix base.
OutputStream &	operator<< (unsigned long long ival)
	Print an integral number in radix base.
OutputStream &	operator<< (const void *ptr)
	Print a pointer as hexadecimal number.
OutputStream &	operator<< (OutputStream &(*f)(OutputStream &))
	Calls one of the manipulator functions.
Public Member Functions inherited from Stringbuffer
virtual	~Stringbuffer ()
	Destructor (nothing to do here)
Public Member Functions inherited from Serial
	Serial (ComPort port=COM1, BaudRate baud_rate=BAUD_115200, DataBits data_bits=DATA_8BIT, StopBits stop_bits=STOP_1BIT, Parity parity=PARITY_NONE)
	Constructor.
int	write (char out, bool blocking=true)
	Write one byte to the serial interface.

Private Member Functions
void	write_number (int num)
	Helper to send a multi-digit number as human readable ASCII characters.

Additional Inherited Members
Public Attributes inherited from OutputStream
int	base
	Number system used for printing integral numbers (one of 2, 8, 10, or 16)
Protected Member Functions inherited from Stringbuffer
	Stringbuffer ()
	Constructor; Marks the buffer as empty.
void	put (char c)
	Inserts a character into the buffer.
virtual void	flush ()=0
	Flush the buffer contents.
Protected Attributes inherited from Stringbuffer
char	buffer [80+1]
long unsigned	pos
	current position in the buffer
Protected Attributes inherited from Serial
const ComPort	port
	Selected COM port.

Detailed Description

Console (VT100 compatible) via Serial interface.

This class allows to connect a VT100-compatible display terminal via the serial interface.

The utility 'screen' can be used to attach a terminal to an interface at a specified connection speed: screen /dev/ttyS0 115200

Color and position can be adjusted with the help of escape codes.

Member Enumeration Documentation

Attrib

enum SerialStream::Attrib

Attributes can be used to influence the display of the output.

Note

The attributes might not be supported or have a different effect depending on the terminal emulator!

Enumerator
RESET	Turn off character attributes.
BRIGHT	Bold.
DIM	Low intensity (dimmed)
UNDERSCORE	Underline.
BLINK	Blink (slow)
REVERSE	Swap fore & background.
HIDDEN	Concealed.

Color

enum SerialStream::Color

Color codes.

Default VT100 supports eight colors for both foreground and background (later versions 256 [8 bit] and even true color [32 bit]). The actual color is affected by the attributes and can look significantly different depending on the terminal emulator.

Constructor & Destructor Documentation

SerialStream()

SerialStream::SerialStream ( ComPort  port = COM1, BaudRate  baud_rate = BAUD_115200, DataBits  data_bits = DATA_8BIT, StopBits  stop_bits = STOP_1BIT, Parity  parity = PARITY_NONE  )

explicit

Constructor for the VT100-compatible console.

Sets up the serial connection as well

Member Function Documentation

flush()

void SerialStream::flush ( )

overridevirtual

Method to output the buffer contents of the base class Stringbuffer.

The method is automatically called when the buffer is full, but can also be called explicitly to force output of the current buffer.

Implements OutputStream.

print()

void SerialStream::print	(	char *	str,
		int	length
	)

Display multiple characters in the window starting at the current cursor position.

This method can be used to output a string, starting at the current cursor position. Since the string does not need to contain a '\0' termination (as it is usually the case in C), the parameter length is required to specify the number of characters in the string.

The text is displayed using the previously configured attributes, fore- and background color.

A line break will occur wherever the character \n is inserted in the text to be output (for compatibility reasons a \r is automatically appended).

Parameters

str	String to output
length	length of string

reset()

void SerialStream::reset

(

)

Reset terminal.

Clear screen, place cursor at the beginning and reset colors and attributes to the default value.

setAttribute()

void SerialStream::setAttribute

(

Attrib

a

)

Change text attribute (for subsequent output)

Parameters

a

Attribute

setBackground()

void SerialStream::setBackground

(

Color

c

)

Change background color (for subsequent output)

Parameters

c

Color

setForeground()

void SerialStream::setForeground

(

Color

c

)

Change foreground color (for subsequent output)

Parameters

c

Color

setPos()

void SerialStream::setPos	(	int	x,
		int	y
	)

Set the cursor position.

Parameters

x	Column in window
y	Row in window

write_number()

void SerialStream::write_number ( int  num )

private

Helper to send a multi-digit number as human readable ASCII characters.

Parameters

num	Number to send

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

• device/serialstream.h
• device/serialstream.cc