#include <stdio.h>   /* Standard input/output definitions */
    #include <string.h>  /* String function definitions */
    #include <unistd.h>  /* UNIX standard function definitions */
    #include <fcntl.h>   /* File control definitions */
    #include <errno.h>   /* Error number definitions */
    #include <termios.h> /* POSIX terminal control definitions */

int main(int argc, char **argv){
        int fd;
        struct termios options;

        fd = open("/dev/ttyUSB0", O_RDWR | O_NOCTTY | O_NDELAY);

        if (fd == -1)perror("open_port: Unable to open /dev/ttyUSB0 - "); fcntl(fd, F_SETFL, 0);

         /* get the current options */
        tcgetattr(fd, &options);

        options.c_cflag &= ~PARENB
        options.c_cflag &= ~CSTOPB
        options.c_cflag &= ~CSIZE;
        options.c_cflag |= CS8;

         /* set the options */
        tcsetattr(fd, TCSANOW, &options);


        close(fd);
        return 0;
}
~