openPort (MacOSX)

openPort

 #include <termios.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <unistd.h>



int openPort( const char *path, int speed, int bits, int parity, int stops, int openFlags)
 24 {
 25         int fd, cflag ;
 26         struct termios termattr ;
 27 
 28         fd = open( path, openFlags ) ;
 29         if ( fd < 0 ) return -1 ;
 30 
 31         //  build other flags
 32         cflag = 0 ;
 33         cflag |= ( bits == 7 ) ? CS7 : CS8 ;            //  bits
 34         if ( parity != 0 ) {
 35                 cflag |= PARENB ;                       //  parity
 36                 if ( parity == 1 ) cflag |= PARODD ;
 37         }
 38         if ( stops > 1 ) cflag |= CSTOPB ;
 39 
 40         //  merge flags into termios attributes
 41         tcgetattr( fd, &termattr ) ;
 42         termattr.c_cflag &= ~( CSIZE | PARENB | PARODD | CSTOPB ) ;     // clear all bits and merge in our selection
 43         termattr.c_cflag |= cflag | CLOCAL ; //
 44 
 45         // set speed, split speed not support on Mac OS X?
 46         cfsetispeed( &termattr, speed ) ;
 47         cfsetospeed( &termattr, speed ) ;
 48         //  set termios
 49         tcflush(fd,TCIFLUSH); // not needed?
 50         tcsetattr( fd, TCSANOW, &termattr ) ;
 51 
 52         return fd ;
 53 }