StuBS
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Console (VT100 compatible) via Serial interface. More...
#include <device/serialstream.h>
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 { BLACK = 0 , RED = 1 , GREEN = 2 , YELLOW = 3 , BLUE = 4 , MAGENTA = 5 , CYAN = 6 , WHITE = 7 } |
Color codes. More... | |
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enum | ComPort { COM1 = 0x3f8 , COM2 = 0x2f8 , COM3 = 0x3e8 , COM4 = 0x2e8 } |
COM-Port. More... | |
enum | BaudRate { BAUD_300 = 384 , BAUD_600 = 192 , BAUD_1200 = 96 , BAUD_2400 = 48 , BAUD_4800 = 24 , BAUD_9600 = 12 , BAUD_19200 = 6 , BAUD_38400 = 3 , BAUD_57600 = 2 , BAUD_115200 = 1 } |
Transmission speed. More... | |
enum | DataBits { DATA_5BIT = 0 , DATA_6BIT = 1 , DATA_7BIT = 2 , DATA_8BIT = 3 } |
Number of data bits per character. | |
enum | StopBits { STOP_1BIT = 0 , STOP_1_5BIT = 4 , STOP_2BIT = 4 } |
Number of stop bits per character. | |
enum | Parity { PARITY_NONE = 0 , PARITY_ODD = 8 , PARITY_EVEN = 24 , PARITY_MARK = 40 , PARITY_SPACE = 56 } |
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. More... | |
void | flush () override |
Method to output the buffer contents of the base class Stringbuffer. More... | |
void | setForeground (Color c) |
Change foreground color (for subsequent output) More... | |
void | setBackground (Color c) |
Change background color (for subsequent output) More... | |
void | setAttribute (Attrib a) |
Change text attribute (for subsequent output) More... | |
void | reset () |
Reset terminal. More... | |
void | setPos (int x, int y) |
Set the cursor position. More... | |
bool | getPos (int &x, int &y) |
Read the current cursor position. More... | |
void | print (char *str, int length) |
Display multiple characters in the window starting at the current cursor position. More... | |
void | listen (bool active=true) |
Initialize the interrupt driven serial connection. More... | |
bool | prologue () override |
Prologue for serial receive interrupts. More... | |
void | epilogue () override |
Epilogue for serial receive interrupts. More... | |
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OutputStream () | |
Default constructor. Initial number system is decimal. | |
virtual | ~OutputStream () |
Destructor. | |
virtual void | flush ()=0 |
Clears the buffer. More... | |
OutputStream & | operator<< (char c) |
Print a single character. More... | |
OutputStream & | operator<< (unsigned char c) |
Print a single character. More... | |
OutputStream & | operator<< (const char *string) |
Printing a null-terminated string. More... | |
OutputStream & | operator<< (bool b) |
Print a boolean value. More... | |
OutputStream & | operator<< (short ival) |
Print an integral number in radix base More... | |
OutputStream & | operator<< (unsigned short ival) |
Print an integral number in radix base More... | |
OutputStream & | operator<< (int ival) |
Print an integral number in radix base More... | |
OutputStream & | operator<< (unsigned int ival) |
Print an integral number in radix base More... | |
OutputStream & | operator<< (long ival) |
Print an integral number in radix base More... | |
OutputStream & | operator<< (unsigned long ival) |
Print an integral number in radix base More... | |
OutputStream & | operator<< (long long ival) |
Print an integral number in radix base More... | |
OutputStream & | operator<< (unsigned long long ival) |
Print an integral number in radix base More... | |
OutputStream & | operator<< (const void *ptr) |
Print a pointer as hexadecimal number. More... | |
OutputStream & | operator<< (OutputStream &(*f)(OutputStream &)) |
Calls one of the manipulator functions. More... | |
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virtual | ~Stringbuffer () |
Destructor (nothing to do here) | |
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Serial (ComPort port=COM1, BaudRate baud_rate=BAUD_115200, DataBits data_bits=DATA_8BIT, StopBits stop_bits=STOP_1BIT, Parity parity=PARITY_NONE) | |
Constructor. More... | |
int | read (bool blocking=true) |
Read one byte from the serial interface. More... | |
int | write (char out, bool blocking=true) |
Write one byte to the serial interface. More... | |
bool | receiveInterrupt (bool enable) |
Activate or deactivate interrupts on data reception. More... | |
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Gate () | |
Constructor. | |
virtual | ~Gate () |
Destructor. More... | |
bool | is_queued () |
Status about the epilogue. More... | |
void | set_queued (bool val) |
Set epilogue status. More... | |
virtual bool | prologue ()=0 |
Device-specific interrupt handling routine that is executed immediately after the interrupt occurs (asynchronously). More... | |
virtual void | epilogue () |
Possibly delayed, synchronously executed Device-specific interrupt handling routine. More... | |
Protected Attributes | |
BBuffer< char, 16 > | prologue_chars |
Buffer for incoming characters in prologue. | |
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char | buffer [80] |
buffer containing characters that will be printed upon flush() | |
long unsigned | pos |
current position in the buffer | |
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const ComPort | port |
Selected COM port. | |
Additional Inherited Members | |
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int | base |
Number system used for printing integral numbers (one of 2, 8, 10, or 16) | |
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Stringbuffer () | |
Constructor; Marks the buffer as empty. | |
void | put (char c) |
Inserts a character into the buffer. More... | |
virtual void | flush ()=0 |
Flush the buffer contents. More... | |
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.
enum SerialStream::Attrib |
Attributes can be used to influence the display of the output.
Enumerator | |
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RESET | Turn off character attributes. |
BRIGHT | Bold. |
DIM | Low intensity (dimmed) |
UNDERSCORE | Underline. |
BLINK | Blink (slow) |
REVERSE | Swap fore & background. |
HIDDEN | Concealed. |
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.
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explicit |
Constructor for the VT100-compatible console.
Sets up the serial connection as well
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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.
void SerialStream::setForeground | ( | Color | c | ) |
Change foreground color (for subsequent output)
c | Color |
void SerialStream::setBackground | ( | Color | c | ) |
Change background color (for subsequent output)
c | Color |
void SerialStream::setAttribute | ( | Attrib | a | ) |
Change text attribute (for subsequent output)
a | Attribute |
void SerialStream::reset | ( | ) |
Reset terminal.
Clear screen, place cursor at the beginning and reset colors and attributes to the default value.
void SerialStream::setPos | ( | int | x, |
int | y | ||
) |
Set the cursor position.
x | Column in window |
y | Row in window |
bool SerialStream::getPos | ( | int & | x, |
int & | y | ||
) |
Read the current cursor position.
It is possible to receive the current cursor position via a special escape code: Request by sending \e[6n
, answer will be \e[y;xR
with y
(row) and x
(column) as human readable ASCII character number.
However, depending on the implementation, it may be possible that the system waits endlessly due to an disconnected terminal or data transmission error.
x | Column in window |
y | Row in window |
true
if position was successfully received 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).
str | String to output |
length | length of string |
void SerialStream::listen | ( | bool | active = true | ) |
Initialize the interrupt driven serial connection.
The parameter active
specifies if the interrupt should be enabled in the IOAPIC.
Only receive interrupts are supported, however, send interrupts could be implemented accordingly: interrupt if line is free/ready.
active | enable interrupt |
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overridevirtual |
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overridevirtual |
Epilogue for serial receive interrupts.
The received character is printed on the screen using the TextStream.
Reimplemented from Gate.