Datenverlust beim Lesen von serieller USB-Schnittstelle

struct termios       options;

struct serial_struct sStruct;

*fd= open(serialParams->port, O_RDWR|O_NOCTTY);// | O_NDELAY);

if (*fd == -1) return ERROR_DEVICE;

fcntl(*fd, F_SETFL,FNDELAY);

tcgetattr(*fd, &options);

//Enable the receiver and set local mode

options.c_cflag |= (CLOCAL | CREAD);

options.c_cflag &= ~CSIZE; // Mask the character size bits

options.c_cflag |= CS8;

options.c_cflag &= ~(PARENB|PARODD);

options.c_cflag&=~CSTOPB;

options.c_lflag=0;

options.c_iflag=0;

options.c_oflag=0;

options.c_iflag |= (IXON | IXOFF | IXANY);

options.c_cflag &= ~CRTSCTS;

ioctl(*fd, TIOCGSERIAL, &sStruct);

sStruct.flags &= ~ASYNC_SPD_MASK;

ioctl(*fd, TIOCSSERIAL, &sStruct);

speed=1000000;

ioctl(*fd, TIOCGSERIAL, &sStruct);

sStruct.flags = (sStruct.flags & ~ASYNC_SPD_MASK) | ASYNC_SPD_CUST;

sStruct.custom_divisor = (sStruct.baud_base + (speed / 2)) / speed;

ioctl(*fd, TIOCSSERIAL, &sStruct);

cfsetispeed(&options, B38400);

cfsetospeed(&options, B38400);

if (tcsetattr(*fd, TCSANOW, &options)!=0) return ERROR_DEVICE;