posix_qextserialport.cpp

关于Qt的第三方串口类serialclass封装

                Posix_CommConfig.c_cflag|=B75;
#else
                cfsetispeed(&Posix_CommConfig, B75);
                cfsetospeed(&Posix_CommConfig, B75);
#endif
                break;

            /*110 baud*/
            case BAUD110:
#ifdef CBAUD 
                Posix_CommConfig.c_cflag&=(~CBAUD);
                Posix_CommConfig.c_cflag|=B110;
#else
                cfsetispeed(&Posix_CommConfig, B110);
                cfsetospeed(&Posix_CommConfig, B110);
#endif
                break;

            /*134.5 baud*/
            case BAUD134:
                TTY_PORTABILITY_WARNING("Posix_QextSerialPort Portability Warning: Windows does not support 134.5 baud operation.");
#ifdef CBAUD 
                Posix_CommConfig.c_cflag&=(~CBAUD);
                Posix_CommConfig.c_cflag|=B134;
#else
                cfsetispeed(&Posix_CommConfig, B134);
                cfsetospeed(&Posix_CommConfig, B134);
#endif
                break;

            /*150 baud*/
            case BAUD150:
                TTY_PORTABILITY_WARNING("Posix_QextSerialPort Portability Warning: Windows does not support 150 baud operation.");
#ifdef CBAUD 
                Posix_CommConfig.c_cflag&=(~CBAUD);
                Posix_CommConfig.c_cflag|=B150;
#else
                cfsetispeed(&Posix_CommConfig, B150);
                cfsetospeed(&Posix_CommConfig, B150);
#endif
                break;

            /*200 baud*/
            case BAUD200:
                TTY_PORTABILITY_WARNING("Posix_QextSerialPort Portability Warning: Windows does not support 200 baud operation.");
#ifdef CBAUD 
                Posix_CommConfig.c_cflag&=(~CBAUD);
                Posix_CommConfig.c_cflag|=B200;
#else
                cfsetispeed(&Posix_CommConfig, B200);
                cfsetospeed(&Posix_CommConfig, B200);
#endif
                break;

            /*300 baud*/
            case BAUD300:
#ifdef CBAUD 
                Posix_CommConfig.c_cflag&=(~CBAUD);
                Posix_CommConfig.c_cflag|=B300;
#else
                cfsetispeed(&Posix_CommConfig, B300);
                cfsetospeed(&Posix_CommConfig, B300);
#endif
                break;

            /*600 baud*/
            case BAUD600:
#ifdef CBAUD 
                Posix_CommConfig.c_cflag&=(~CBAUD);
                Posix_CommConfig.c_cflag|=B600;
#else
                cfsetispeed(&Posix_CommConfig, B600);
                cfsetospeed(&Posix_CommConfig, B600);
#endif
                break;

            /*1200 baud*/
            case BAUD1200:
#ifdef CBAUD 
                Posix_CommConfig.c_cflag&=(~CBAUD);
                Posix_CommConfig.c_cflag|=B1200;
#else
                cfsetispeed(&Posix_CommConfig, B1200);
                cfsetospeed(&Posix_CommConfig, B1200);
#endif
                break;

            /*1800 baud*/
            case BAUD1800:
                TTY_PORTABILITY_WARNING("Posix_QextSerialPort Portability Warning: Windows and IRIX do not support 1800 baud operation.");
#ifdef CBAUD 
                Posix_CommConfig.c_cflag&=(~CBAUD);
                Posix_CommConfig.c_cflag|=B1800;
#else
                cfsetispeed(&Posix_CommConfig, B1800);
                cfsetospeed(&Posix_CommConfig, B1800);
#endif
                break;

            /*2400 baud*/
            case BAUD2400:
#ifdef CBAUD 
                Posix_CommConfig.c_cflag&=(~CBAUD);
                Posix_CommConfig.c_cflag|=B2400;
#else
                cfsetispeed(&Posix_CommConfig, B2400);
                cfsetospeed(&Posix_CommConfig, B2400);
#endif
                break;

            /*4800 baud*/
            case BAUD4800:
#ifdef CBAUD 
                Posix_CommConfig.c_cflag&=(~CBAUD);
                Posix_CommConfig.c_cflag|=B4800;
#else
                cfsetispeed(&Posix_CommConfig, B4800);
                cfsetospeed(&Posix_CommConfig, B4800);
#endif
                break;

            /*9600 baud*/
            case BAUD9600:
#ifdef CBAUD 
                Posix_CommConfig.c_cflag&=(~CBAUD);
                Posix_CommConfig.c_cflag|=B9600;
#else
                cfsetispeed(&Posix_CommConfig, B9600);
                cfsetospeed(&Posix_CommConfig, B9600);
#endif
                break;

            /*14400 baud*/
            case BAUD14400:
                TTY_WARNING("Posix_QextSerialPort: POSIX does not support 14400 baud operation.  Switching to 9600 baud.");
#ifdef CBAUD 
                Posix_CommConfig.c_cflag&=(~CBAUD);
                Posix_CommConfig.c_cflag|=B9600;
#else
                cfsetispeed(&Posix_CommConfig, B9600);
                cfsetospeed(&Posix_CommConfig, B9600);
#endif
                break;

            /*19200 baud*/
            case BAUD19200:
#ifdef CBAUD 
                Posix_CommConfig.c_cflag&=(~CBAUD);
                Posix_CommConfig.c_cflag|=B19200;
#else
                cfsetispeed(&Posix_CommConfig, B19200);
                cfsetospeed(&Posix_CommConfig, B19200);
#endif
                break;

            /*38400 baud*/
            case BAUD38400:
#ifdef CBAUD 
                Posix_CommConfig.c_cflag&=(~CBAUD);
                Posix_CommConfig.c_cflag|=B38400;
#else
                cfsetispeed(&Posix_CommConfig, B38400);
                cfsetospeed(&Posix_CommConfig, B38400);
#endif
                break;

            /*56000 baud*/
            case BAUD56000:
                TTY_WARNING("Posix_QextSerialPort: POSIX does not support 56000 baud operation.  Switching to 38400 baud.");
#ifdef CBAUD 
                Posix_CommConfig.c_cflag&=(~CBAUD);
                Posix_CommConfig.c_cflag|=B38400;
#else
                cfsetispeed(&Posix_CommConfig, B38400);
                cfsetospeed(&Posix_CommConfig, B38400);
#endif
                break;

            /*57600 baud*/
            case BAUD57600:
#ifdef CBAUD 
                Posix_CommConfig.c_cflag&=(~CBAUD);
                Posix_CommConfig.c_cflag|=B57600;
#else
                cfsetispeed(&Posix_CommConfig, B57600);
                cfsetospeed(&Posix_CommConfig, B57600);
#endif
                break;

            /*76800 baud*/
            case BAUD76800:
                TTY_PORTABILITY_WARNING("Posix_QextSerialPort Portability Warning: Windows and some POSIX systems do not support 76800 baud operation.");
#ifdef CBAUD 
                Posix_CommConfig.c_cflag&=(~CBAUD);

#ifdef B76800                
                Posix_CommConfig.c_cflag|=B76800;
#else
                TTY_WARNING("Posix_QextSerialPort: Posix_QextSerialPort was compiled without 76800 baud support.  Switching to 57600 baud.");
                Posix_CommConfig.c_cflag|=B57600;
#endif //B76800
#else  //CBAUD
#ifdef B76800
                cfsetispeed(&Posix_CommConfig, B76800);
                cfsetospeed(&Posix_CommConfig, B76800);
#else  
                TTY_WARNING("Posix_QextSerialPort: Posix_QextSerialPort was compiled without 76800 baud support.  Switching to 57600 baud.");
                cfsetispeed(&Posix_CommConfig, B57600);
                cfsetospeed(&Posix_CommConfig, B57600);
#endif //B76800
#endif //CBAUD
                break;

            /*115200 baud*/
            case BAUD115200:
#ifdef CBAUD 
                Posix_CommConfig.c_cflag&=(~CBAUD);
                Posix_CommConfig.c_cflag|=B115200;
#else
                cfsetispeed(&Posix_CommConfig, B115200);
                cfsetospeed(&Posix_CommConfig, B115200);
#endif
                break;

            /*128000 baud*/
            case BAUD128000:
                TTY_WARNING("Posix_QextSerialPort: POSIX does not support 128000 baud operation.  Switching to 115200 baud.");
#ifdef CBAUD 
                Posix_CommConfig.c_cflag&=(~CBAUD);
                Posix_CommConfig.c_cflag|=B115200;
#else
                cfsetispeed(&Posix_CommConfig, B115200);
                cfsetospeed(&Posix_CommConfig, B115200);
#endif
                break;
        
            /*256000 baud*/
            case BAUD256000:
                TTY_WARNING("Posix_QextSerialPort: POSIX does not support 256000 baud operation.  Switching to 115200 baud.");
#ifdef CBAUD 
                Posix_CommConfig.c_cflag&=(~CBAUD);
                Posix_CommConfig.c_cflag|=B115200;
#else
                cfsetispeed(&Posix_CommConfig, B115200);
                cfsetospeed(&Posix_CommConfig, B115200);
#endif
                break;
        }
        tcsetattr(Posix_File->handle(), TCSAFLUSH, &Posix_CommConfig);
    }
    UNLOCK_MUTEX();
}

/*!
\fn void Posix_QextSerialPort::setDtr(bool set=true) 
Sets DTR line to the requested state (high by default).  This function will have no effect if 
the port associated with the class is not currently open.
*/
void Posix_QextSerialPort::setDtr(bool set) {
    LOCK_MUTEX();
    if (portOpen) {
        int status;
        ioctl(Posix_File->handle(), TIOCMGET, &status);
        if (set) {
            status|=TIOCM_DTR;
        }
        else {
            status&=~TIOCM_DTR;
        }
        ioctl(Posix_File->handle(), TIOCMSET, &status);
    }
    UNLOCK_MUTEX();
}

/*!
\fn void Posix_QextSerialPort::setRts(bool set=true) 
Sets RTS line to the requested state (high by default).  This function will have no effect if 
the port associated with the class is not currently open.
*/
void Posix_QextSerialPort::setRts(bool set) {
    LOCK_MUTEX();
    if (portOpen) {
        int status;
        ioctl(Posix_File->handle(), TIOCMGET, &status);
        if (set) {
            status|=TIOCM_RTS;
        }
        else {
            status&=~TIOCM_RTS;
        }
        ioctl(Posix_File->handle(), TIOCMSET, &status);
    }
    UNLOCK_MUTEX();
}

/*!
\fn unsigned long Posix_QextSerialPort::lineStatus(void)
returns the line status as stored by the port function.  This function will retrieve the states
of the following lines: DCD, CTS, DSR, and RI.  On POSIX systems, the following additional lines
can be monitored: DTR, RTS, Secondary TXD, and Secondary RXD.  The value returned is an unsigned 
long with specific bits indicating which lines are high.  The following constants should be used 
to examine the states of individual lines:

\verbatim
Mask        Line               
------      ----               
LS_CTS      CTS
LS_DSR      DSR
LS_DCD      DCD
LS_RI       RI
LS_RTS      RTS (POSIX only)   
LS_DTR      DTR (POSIX only)
LS_ST       Secondary TXD (POSIX only)
LS_SR       Secondary RXD (POSIX only)
\endverbatim

This function will return 0 if the port associated with the class is not currently open.
*/
unsigned long Posix_QextSerialPort::lineStatus(void) {
    unsigned long Status=0, Temp;
    LOCK_MUTEX();
    if (portOpen) {
        ioctl(Posix_File->handle(), TIOCMGET, &Temp);
        if (Temp&TIOCM_CTS) {
            Status|=LS_CTS;
        }
        if (Temp&TIOCM_DSR) {
            Status|=LS_DSR;
        }
        if (Temp&TIOCM_RI) {
            Status|=LS_RI;
        }
        if (Temp&TIOCM_CD) {
            Status|=LS_DCD;
        }
        if (Temp&TIOCM_DTR) {
            Status|=LS_DTR;
        }
        if (Temp&TIOCM_RTS) {
            Status|=LS_RTS;
        }
        if (Temp&TIOCM_ST) {
            Status|=LS_ST;
        }
        if (Temp&TIOCM_SR) {
            Status|=LS_SR;
        }
    }
    UNLOCK_MUTEX();
    return Status;
}

/*!
\fn void Posix_QextSerialPort::setTimeout(unsigned long sec=0, unsigned long millisec=0);
Sets the read and write timeouts for the port to sec seconds and millisec milliseconds.
Note that this is a per-character timeout, i.e. the port will wait this long for each 
individual character, not for the whole read operation.  This timeout also applies to the
bytesWaiting() function.

\note
POSIX does not support millisecond-level control for I/O timeout values.  Any
timeout set using this function will be set to the next lowest tenth of a second for 
the purposes of detecting read or write timeouts.  For example a timeout of 550 milliseconds 
will be seen by the class as a timeout of 500 milliseconds for the purposes of reading and 
writing the port.  However millisecond-level control is allowed by the select() system call, 
so for example a 550-millisecond timeout will be seen as 550 milliseconds on POSIX systems for 
the purpose of detecting available bytes in the read buffer.

*/
void Posix_QextSerialPort::setTimeout(unsigned long sec, unsigned long millisec) {
    Settings.Timeout_Sec=sec;
    Settings.Timeout_Millisec=millisec;
    Posix_Copy_Timeout.tv_sec=sec;
    Posix_Copy_Timeout.tv_usec=millisec;
    tcgetattr(Posix_File->handle(), &Posix_CommConfig);
    Posix_CommConfig.c_cc[VTIME]=sec*10+millisec/100;
    if (portOpen) {
        tcsetattr(Posix_File->handle(), TCSAFLUSH, &Posix_CommConfig);
    }
}