Code running problems !!!

Code running problems !!! -- Linux general technology-Linux programming and kernel information. The following is a detailed description. When I am running the following code, I will not stop. Please check it !!!!

# Include /* Standard input/output definition */
# Include /* Standard function library definition */
# Include /* Unix standard function definition */
# Include
# Include
# Include /* File control definition */
# Include /* PPSIX terminal control definition */
# Include /* Error Code definition */
# Define COM1 1 // "/dev/ttyS0" file: // Serial Port 1
# Define COM2 2 // "/dev/ttyS1" file: // Serial Port 2
# Define TURE 0
# Define FALSE-1
Void OpenSerialPort (); // open the serial port
Void CloseSerialPort (); // close the serial port
Void ReadSerialPort (); // read data from the serial port
Void WriteSerialPort (); // write data to the serial port
Void SetSerialPort ();
Struct termios opt;
Int fd;
Char buffR [512];
Char buffW [512];
Int LenR;
Int LenW;
Int OpenDev (char * Dev );
Void setspeed (int fd, int speed );
Int setParity (int fd, int databits, int stopbits, int parity );

/* ===================================================== ======================================
Private function initialization serial port
========================================================== ======================================= */


Int OpenDev (char * Dev)
{
Int fd = open (Dev, O_RDWR );
If (fd =-1)
{
Perror ("Can't Open Serial Port"); // an error occurs when the Serial Port file is opened.
Return-1;
}
Else
{
Printf ("open ");
Return fd; // the ID of the returned object.
}
}





/* ===================================================== ==========================================
Set the serial communication rate

File handle for opening a serial port of the fd type int
Speed int serial port speed
Return void
========================================================== ========================================= */
Void setspeed (int fd, int speed)
{
Int I;
Int status;
Int name_arr [] = {38400,19200, 9600,4800, 2400,1200, 300,384 300 ,19200, 9600,4800, 2400,1200 ,};
Int speed_arr [] = {B38400, B19200, B9600, B4800, B2400, B1200, B300, B38400, B19200, B9600, B4800, B2400, B1200, B300 ,};
Struct termios Opt;
Tcgetattr (fd, & Opt );
For (I = 0; I {
If (speed = name_arr )
{
Tcflush (fd, TCIOFLUSH );
Cfsetispeed (& Opt, speed_arr);
Cfsetospeed (& Opt, speed_arr);
Status = tcsetattr (fd, TCSANOW, & Opt );
If (status! = 0)
Perror ("tcsetattr fd1 ");
Return;
}
Tcflush (fd, TCIOFLUSH );
}
}
/* ===================================================== =========================================== */



/* ===================================================== ======================================

Set the checkpoint for private functions


* @ Brief set the serial data bit, stop bit and verify bit
* @ Param fd type int indicates the serial port file handle opened
* @ Param databits type int data bit value: 7 or 8
* @ Param stopbits type int stop bit value: 1 or 2
* @ Param parity type int valid type values: N, E, O, and S
========================================================== ===================================== */
Int setParity (int fd, int databits, int stopbits, int parity)
{
Struct termios options;

If (tcgetattr (fd, & options )! = 0)
{
Perror ("SetupSerial 1 ");
Return (FALSE );
}
Options. c_cflag & = ~ CSIZE;

Switch (databits)
{
Case 7:
Options. c_cflag | = CS7;
Break;
Case 8:
Options. c_cflag | = CS8;
Break;
Default:
Fprintf (stderr, "Unsuipported data size \ n ");
Return (FALSE );
}

Switch (parity)
{
Case 'N ':
Case 'N ':
Options. c_cflag & = ~ PARENB;
Options. c_iflag & = ~ INPCK;
Break;
Case 'O ':
Case 'O ':
Options. c_cflag | = (PARODD | PARENB );
Options. c_iflag | = INPCK;
Break;
Case 'E ':
Case 'E ':
Options. c_cflag | = PARENB;
Options. c_cflag & = ~ PARODD;
Options. c_iflag | = INPCK;
Break;
Case's ':
Case's ':
Options. c_cflag & = ~ PARENB;
Options. c_cflag & = ~ CSTOPB;
Break;
Default:
Fprintf (stderr, "Unsupported parity \ n ");
Return (FALSE );
}

Switch (stopbits)
{
Case 1:
Options. c_cflag & = ~ CSTOPB;
Break;
Case 2:
Options. c_cflag | = CSTOPB;
Break;
Default:
Fprintf (stderr, "Unsupported stop bits \ n ");
Return (FALSE );
}

If (parity! = 'N ')
Options. c_iflag | = INPCK;

Options. c_cc [VTIME] = 150;
Options. c_cc [VMIN] = 0;

Tcflush (fd, TCIFLUSH );

If (tcsetattr (fd, TCSANOW, & options )! = 0)
{
Perror ("SetupSerial 3 ");
Return (FALSE );
}

Return (TURE );
}

/* ===================================================== =========================================== */

/*---------------------------------------------------------
Open the serial port using public functions
-------------------------------------------------------*/
Void OpenSerialPort (int com)
{
Char * dev;
Switch (com)
{
Case COM1:
Dev = "/dev/ttyS0"; break;
Case COM2:
Dev = "/dev/ttyS1"; break;
Default:
Exit (-1 );
}
Fd = OpenDev (dev );
Setspeed (fd, B9600 );

If (setParity (fd, 8, 1, 'n') =-1)
{
Printf ("Set Parity Error \ n ");
Exit (-1 );
}
Printf ("open shecff ");
}


/*---------------------------------------------------------
========================================================== ============================
Public Functions read serial port information
========================================================== ==============================
-------------------------------------------------------*/
Void ReadSerialPort ()
{
Int nread;
While (nread! = 0)
{
While (nread = read (fd, buffR, 511)> 0 ))
{
Printf ("\ nLen % d \ n", nread );
BuffR [nread + 1] = '\ 0 ';
Printf ("\ n % s", buffR );
}
If (nread =-1)
{
Printf ("read error! \ N ");
Exit (-1 );
}
}
}



/*---------------------------------------------------------
========================================================== ============================
Public Functions send serial port information
========================================================== ==============================
-------------------------------------------------------*/
Void WriteSerialPort (char * p)
{

Char * buffw;



Buffw = p;
If (write (fd, buffw, 512 ))
{
Printf ("write is suff ");
}

}



/*---------------------------------------------------------
========================================================== ============================
Public Function close serial port
========================================================== ==============================
-------------------------------------------------------*/

Void CloseSerialPort ()
{
Close (fd );
}
Int main (void)
{

Char * l = "fdfdfdfdfdf ";
OpenSerialPort (COM1 );
WriteSerialPort (l );
ReadSerialPort ();
}