DOKK / manpages / debian 10 / libserial-doc / SerialPort.3.en
SerialPort(3) libserial SerialPort(3)

SerialPort -

#include <SerialPort.h>


class AlreadyOpen
class NotOpen
class OpenFailed
class ReadTimeout
class UnsupportedBaudRate


enum BaudRate { BAUD_50 = B50, BAUD_75 = B75, BAUD_110 = B110, BAUD_134 = B134, BAUD_150 = B150, BAUD_200 = B200, BAUD_300 = B300, BAUD_600 = B600, BAUD_1200 = B1200, BAUD_1800 = B1800, BAUD_2400 = B2400, BAUD_4800 = B4800, BAUD_9600 = B9600, BAUD_19200 = B19200, BAUD_38400 = B38400, BAUD_57600 = B57600, BAUD_115200 = B115200, BAUD_230400 = B230400, BAUD_DEFAULT = BAUD_57600 }
The allowed set of baud rates. enum CharacterSize { CHAR_SIZE_5 = CS5, CHAR_SIZE_6 = CS6, CHAR_SIZE_7 = CS7, CHAR_SIZE_8 = CS8, CHAR_SIZE_DEFAULT = CHAR_SIZE_8 }
enum StopBits { STOP_BITS_1, STOP_BITS_2, STOP_BITS_DEFAULT = STOP_BITS_1 }
enum Parity { PARITY_EVEN, PARITY_ODD, PARITY_NONE, PARITY_DEFAULT = PARITY_NONE }
enum FlowControl { FLOW_CONTROL_HARD, FLOW_CONTROL_SOFT, FLOW_CONTROL_NONE, FLOW_CONTROL_DEFAULT = FLOW_CONTROL_NONE }
typedef std::vector< unsigned char > DataBuffer
Read the specified number of bytes from the serial port.


SerialPort (const std::string &serialPortName)
Constructor for a serial port. virtual ~SerialPort () throw ()
Destructor. void Open (const BaudRate baudRate=BAUD_DEFAULT, const CharacterSize charSize=CHAR_SIZE_DEFAULT, const Parity parityType=PARITY_DEFAULT, const StopBits stopBits=STOP_BITS_DEFAULT, const FlowControl flowControl=FLOW_CONTROL_DEFAULT) throw ( AlreadyOpen, OpenFailed, UnsupportedBaudRate, std::invalid_argument )
Open the serial port with the specified settings. bool IsOpen () const
Check if the serial port is open for I/O. void Close () throw (NotOpen)
Close the serial port. void SetBaudRate (const BaudRate baudRate) throw ( UnsupportedBaudRate, NotOpen, std::invalid_argument )
Set the baud rate for the serial port to the specified value (baudRate). BaudRate GetBaudRate () const throw ( NotOpen, std::runtime_error )
Get the current baud rate for the serial port. void SetCharSize (const CharacterSize charSize) throw ( NotOpen, std::invalid_argument )
Set the character size for the serial port. CharacterSize GetCharSize () const throw (NotOpen)
Get the current character size for the serial port. void SetParity (const Parity parityType) throw ( NotOpen, std::invalid_argument )
Set the parity type for the serial port. Parity GetParity () const throw (NotOpen)
Get the parity type for the serial port. void SetNumOfStopBits (const StopBits numOfStopBits) throw ( NotOpen, std::invalid_argument )
Set the number of stop bits to be used with the serial port. StopBits GetNumOfStopBits () const throw (NotOpen)
Get the number of stop bits currently being used by the serial port. void SetFlowControl (const FlowControl flowControl) throw ( NotOpen, std::invalid_argument )
Set flow control. FlowControl GetFlowControl () const throw ( NotOpen )
Get the current flow control setting. bool IsDataAvailable () const throw (NotOpen)
Check if data is available at the input of the serial port. unsigned char ReadByte (const unsigned int msTimeout=0) throw ( NotOpen, ReadTimeout, std::runtime_error )
Read a single byte from the serial port. void Read (DataBuffer &dataBuffer, const unsigned int numOfBytes=0, const unsigned int msTimeout=0) throw ( NotOpen, ReadTimeout, std::runtime_error )
const std::string ReadLine (const unsigned int msTimeout=0, const char lineTerminator= '0) throw ( NotOpen, ReadTimeout, std::runtime_error )
Read a line of characters from the serial port. void WriteByte (const unsigned char dataByte) throw ( NotOpen, std::runtime_error )
Send a single byte to the serial port. void Write (const DataBuffer &dataBuffer) throw ( NotOpen, std::runtime_error )
Write the data from the specified vector to the serial port. void Write (const std::string &dataString) throw ( NotOpen, std::runtime_error )
Write a string to the serial port. void SetDtr (const bool dtrState=true) throw ( NotOpen, std::runtime_error )
Set the DTR line to the specified value. bool GetDtr () const throw ( NotOpen, std::runtime_error )
Get the status of the DTR line. void SetRts (const bool rtsState=true) throw ( NotOpen, std::runtime_error )
Set the RTS line to the specified value. bool GetRts () const throw ( NotOpen, std::runtime_error )
Get the status of the RTS line. bool GetCts () const throw ( NotOpen, std::runtime_error )
bool GetDsr () const throw ( NotOpen, std::runtime_error )
int GetFileDescriptor () const
Get the low-level file descriptor associated with the serial port.


SerialPort (const SerialPort &otherSerialPort)
Prevent copying of objects of this class by declaring the copy constructor private. SerialPort & operator= (const SerialPort &otherSerialPort)
Prevent copying of objects of this class by declaring the assignment operator private.


SerialPortImpl * mSerialPortImpl
Pointer to implementation class instance.

Note:

This class attaches a handler to the SIGIO signal to detect the data arriving at a serial port. However, this signal handler will also call any signal handler that is already attached to this signal. However, if other parts of the application attach a signal handler to SIGIO after constructing an instance of SIGIO, they must ensure that they call the existing signal handler. Otherwise, it may not be possible to receive any data through the serial port using this class.

:FIXME: Provide examples of the above potential problem.

Todo

The current implementation does not check if another process has locked the serial port device and does not lock the serial port device after opening it. This has been observed to cause problems while using this library while other programs such as minicom are also accessing the same device. It will be useful to lock the serial port device when it is being used by this class.

Definition at line 50 of file SerialPort.h.

Read the specified number of bytes from the serial port. The method will timeout if no data is received in the specified number of milliseconds (msTimeout). If msTimeout is 0, then this method will block till all requested bytes are received. If numOfBytes is zero, then this method will keep reading data till no more data is available at the serial port. In all cases, all read data is available in dataBuffer on return from this method.

Definition at line 370 of file SerialPort.h.

enum SerialPort::BaudRate

The allowed set of baud rates.

Enumerator

Definition at line 56 of file SerialPort.h.

enum SerialPort::CharacterSize

Enumerator

5 bit characters.
6 bit characters.
7 bit characters.
8 bit characters.

Definition at line 96 of file SerialPort.h.

enum SerialPort::FlowControl

Enumerator

Definition at line 117 of file SerialPort.h.

enum SerialPort::Parity

Enumerator

Even parity.
Odd parity.
No parity i.e. parity checking disabled.

Definition at line 110 of file SerialPort.h.

enum SerialPort::StopBits

Enumerator

1 stop bit.
2 stop bits.

Definition at line 104 of file SerialPort.h.

Constructor for a serial port.

Destructor.

Prevent copying of objects of this class by declaring the copy constructor private. This method is never defined.

Close the serial port. All settings of the serial port will be lost and no more I/O can be performed on the serial port.

Exceptions:

NotOpen Thrown if this method is called while the serial port is not open.

BaudRate SerialPort::GetBaudRate () const NotOpen,std::runtime_error

Get the current baud rate for the serial port.

Exceptions:

NotOpen Thrown if this method is called while the serial port is not open.

CharacterSize SerialPort::GetCharSize () constNotOpen

Get the current character size for the serial port.

Exceptions:

NotOpen Thrown if this method is called while the serial port is not open.

Get the status of the DTR line.

Get the low-level file descriptor associated with the serial port.

Warning:

This is for advanced/power users only. Messing with this file descriptor (such as closing it) will probably cause problems. Be careful when you use it. Using this file descriptor after the controlling serial port has been closed or deleted (for example, when it goes out of scope) will result in undefined behavior. You have been warned!

Returns:

The low-level file descriptor corresponding to the serial port.

Exceptions:

This method will throw NotOpen if the serial port is not currently open.

FlowControl SerialPort::GetFlowControl () constNotOpen

Get the current flow control setting.

Exceptions:

NotOpen Thrown if this method is called while the serial port is not open.

StopBits SerialPort::GetNumOfStopBits () constNotOpen

Get the number of stop bits currently being used by the serial port.

Exceptions:

NotOpen Thrown if this method is called while the serial port is not open.

Parity SerialPort::GetParity () constNotOpen

Get the parity type for the serial port.

Exceptions:

NotOpen Thrown if this method is called while the serial port is not open.

Get the status of the RTS line.

Check if data is available at the input of the serial port.

Exceptions:

NotOpen Thrown if this method is called while the serial port is not open.

Check if the serial port is open for I/O.

Open the serial port with the specified settings. A serial port cannot be used till it is open.

Exceptions:

AlreadyOpen This exception is thrown if the serial port is already open.
OpenFailed This exception is thrown if the serial port could not be opened.
std::invalid_argument This exception is thrown if an invalid parameter value is specified.

SerialPort& SerialPort::operator= (const SerialPort & otherSerialPort) [private]

Prevent copying of objects of this class by declaring the assignment operator private. This method is never defined.

Read a single byte from the serial port. If no data is available in the specified number of milliseconds (msTimeout), then this method will throw ReadTimeout exception. If msTimeout is 0, then this method will block till data is available.

Read a line of characters from the serial port.

Set the baud rate for the serial port to the specified value (baudRate).

Exceptions:

NotOpen Thrown if this method is called while the serial port is not open.
std::invalid_argument Thrown if an invalid baud rate is specified.

Set the character size for the serial port.

Exceptions:

NotOpen Thrown if this method is called while the serial port is not open.
std::invalid_argument Thrown if an invalid character size is specified.

Set the DTR line to the specified value.

Set flow control.

Exceptions:

NotOpen Thrown if this method is called while the serial port is not open.
std::invalid_argument Thrown if an invalid flow control is specified.

Set the number of stop bits to be used with the serial port.

Exceptions:

NotOpen Thrown if this method is called while the serial port is not open.
std::invalid_argument Thrown if an invalid number of stop bits is specified.

Set the parity type for the serial port.

Exceptions:

NotOpen Thrown if this method is called while the serial port is not open.
std::invalid_argument Thrown if an invalid parity is specified.

Set the RTS line to the specified value.

Write the data from the specified vector to the serial port.

Write a string to the serial port.

Send a single byte to the serial port.

Exceptions:

NotOpen Thrown if this method is called while the serial port is not open.

Pointer to implementation class instance.

Definition at line 504 of file SerialPort.h.

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Mon Sep 14 2015 Version 0.6.0rc3