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PSerialChannel Class Reference

#include <serchan.h>

Inheritance diagram for PSerialChannel:

PChannel PObject PModem

List of all members.

Detailed Description

This class defines an I/O channel that communicates via a serial port. This is usually an RS-232 port.

Definition at line 106 of file serchan.h.

Comparison functions

enum  Comparison { LessThan = -1, EqualTo = 0, GreaterThan = 1 }
virtual Comparison CompareObjectMemoryDirect (const PObject &obj) const
bool operator!= (const PObject &obj) const
bool operator< (const PObject &obj) const
bool operator<= (const PObject &obj) const
bool operator== (const PObject &obj) const
bool operator> (const PObject &obj) const
bool operator>= (const PObject &obj) const

Error functions

enum  ErrorGroup { LastReadError, LastWriteError, LastGeneralError, NumErrorGroups }
enum  Errors {
  NoError, NotFound, FileExists, DiskFull,
  AccessDenied, DeviceInUse, BadParameter, NoMemory,
  NotOpen, Timeout, Interrupted, BufferTooSmall,
  Miscellaneous, ProtocolFailure, NumNormalisedErrors
Errors GetErrorCode (ErrorGroup group=NumErrorGroups) const
int GetErrorNumber (ErrorGroup group=NumErrorGroups) const
virtual PString GetErrorText (ErrorGroup group=NumErrorGroups) const
static PString GetErrorText (Errors lastError, int osError=0)


enum  FlowControl { DefaultFlowControl, NoFlowControl, XonXoff, RtsCts }
 Configuration of serial port flow control options. More...
enum  Parity {
  DefaultParity, NoParity, EvenParity, OddParity,
  MarkParity, SpaceParity
 Configuration of serial port parity options. More...
 PSerialChannel (PConfig &cfg)
 PSerialChannel (const PString &port, DWORD speed=0, BYTE data=0, Parity parity=DefaultParity, BYTE stop=0, FlowControl inputFlow=DefaultFlowControl, FlowControl outputFlow=DefaultFlowControl)
 PSerialChannel ()
 Create a new serial channel object, but do not open it.
 ~PSerialChannel ()
 Close the serial channel on destruction.

Miscellaneous functions

enum  ShutdownValue { ShutdownRead = 0, ShutdownWrite = 1, ShutdownReadAndWrite = 2 }
void AbortCommandString ()
BOOL SendCommandString (const PString &command)
BOOL SetBufferSize (PINDEX newSize)
virtual BOOL Shutdown (ShutdownValue option)

Scattered read/write functions

typedef std::vector< SliceVectorOfSlice
virtual BOOL Read (const VectorOfSlice &slices)
virtual BOOL Write (const VectorOfSlice &slices)

Run Time Type functions

virtual const char * GetClass (unsigned=0) const
virtual BOOL InternalIsDescendant (const char *clsName) const
BOOL IsClass (const char *cls) const
static const char * Class ()

Open functions

virtual BOOL Open (PConfig &cfg)
virtual BOOL Open (const PString &port, DWORD speed=0, BYTE data=0, Parity parity=DefaultParity, BYTE stop=0, FlowControl inputFlow=DefaultFlowControl, FlowControl outputFlow=DefaultFlowControl)
static PStringList GetPortNames ()

I/O functions

virtual void PrintOn (ostream &strm) const
virtual void ReadFrom (istream &strm)
ostream & operator<< (ostream &strm, const PObject &obj)
istream & operator>> (istream &strm, PObject &obj)

Public Types

enum  PXBlockType { PXReadBlock, PXWriteBlock, PXAcceptBlock, PXConnectBlock }

Public Member Functions

BOOL Close ()
Status functions
void ClearBreak ()
void ClearDTR ()
void ClearRTS ()
BOOL GetRing ()
void SetBreak (BOOL state=TRUE)
void SetDTR (BOOL state=TRUE)
void SetRTS (BOOL state=TRUE)
Miscellaneous functions
virtual PObjectClone () const
Overrides from class PObject
virtual Comparison Compare (const PObject &obj) const
virtual PINDEX HashFunction () const
Information functions
virtual PChannelGetBaseReadChannel () const
virtual PChannelGetBaseWriteChannel () const
int GetHandle () const
virtual PString GetName () const
virtual BOOL IsOpen () const
Configuration functions
BYTE GetDataBits () const
FlowControl GetInputFlowControl () const
FlowControl GetOutputFlowControl () const
Parity GetParity () const
DWORD GetSpeed () const
BYTE GetStopBits () const
virtual void SaveSettings (PConfig &cfg)
BOOL SetDataBits (BYTE data)
BOOL SetInputFlowControl (FlowControl flowControl)
BOOL SetOutputFlowControl (FlowControl flowControl)
BOOL SetParity (Parity parity)
BOOL SetSpeed (DWORD speed)
BOOL SetStopBits (BYTE stop)
Reading functions
virtual PINDEX GetLastReadCount () const
PTimeInterval GetReadTimeout () const
virtual void OnReadComplete (void *buf, PINDEX len)
virtual BOOL Read (void *buf, PINDEX len)
virtual BOOL ReadAsync (void *buf, PINDEX len)
BOOL ReadBlock (void *buf, PINDEX len)
virtual int ReadChar ()
PString ReadString (PINDEX len)
void SetReadTimeout (const PTimeInterval &time)
Writing functions
virtual PINDEX GetLastWriteCount () const
PTimeInterval GetWriteTimeout () const
virtual void OnWriteComplete (const void *buf, PINDEX len)
void SetWriteTimeout (const PTimeInterval &time)
virtual BOOL Write (const void *buf, PINDEX len)
virtual BOOL WriteAsync (const void *buf, PINDEX len)
BOOL WriteChar (int c)
BOOL WriteString (const PString &str)

Static Public Member Functions

static BOOL ConvertOSError (int libcReturnValue, Errors &lastError, int &osError)

Protected Member Functions

virtual BOOL ConvertOSError (int libcReturnValue, ErrorGroup group=LastGeneralError)
int PXClose ()
BOOL PXSetIOBlock (PXBlockType type, const PTimeInterval &timeout)
int ReadCharWithTimeout (PTimeInterval &timeout)
BOOL ReceiveCommandString (int nextChar, const PString &reply, PINDEX &pos, PINDEX start)
BOOL SetErrorValues (Errors errorCode, int osError, ErrorGroup group=LastGeneralError)

Protected Attributes

PString channelName
Errors lastErrorCode [NumErrorGroups+1]
 The platform independant error code.
int lastErrorNumber [NumErrorGroups+1]
 The operating system error number (eg as returned by errno).
PINDEX lastReadCount
 Number of byte last read by the Read() function.
PINDEX lastWriteCount
 Number of byte last written by the Write() function.
int os_handle
 The operating system file handle return by standard open() function.
PXBlockType px_lastBlockType
PMutex px_selectMutex
PMutex px_threadMutex
PMutex px_writeMutex
PTimeInterval readTimeout
 Timeout for read operations.
PTimeInterval writeTimeout
 Timeout for write operations.

Private Member Functions

void Construct ()
 PCLASSINFO (PSerialChannel, PChannel)

Private Attributes

DWORD baudRate
BYTE dataBits
struct termios oldTermio
Parity parityBits
BYTE stopBits
struct termios Termio

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

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