Open pour lunartec

#include <stdio.h>     

#include <string.h>    

#include <unistd.h>    

#include <fcntl.h>     

#include <errno.h>     

#include <termios.h>   

#include <sys/types.h>

#include <sys/stat.h>

#include <stdlib.h>

#include <stdarg.h>

#include <signal.h>

/*struct termios stdin_saved_attributes;*/

struct termios tty_saved_attributes;

int tty_fd;

int tty_open(char* tty_dev) {

struct termios new_attributes;

tty_fd = open(tty_dev,O_RDWR| O_NOCTTY | O_NONBLOCK);

  if (tty_fd<0) {

   return -1;

  } else {

tcgetattr(tty_fd,&tty_saved_attributes);

tcgetattr(tty_fd,&new_attributes);

/*c_cflag */

new_attributes.c_cflag |= CREAD; /* Enable receiver */

   new_attributes.c_cflag |= B9600; /* Set baud rate */

   new_attributes.c_cflag |= CS8; /* 8 data bit */

/* c_iflag */

   new_attributes.c_iflag |= IGNPAR; /* Ignore framing errors and parity errors. */ 

/* c_lflag */

   new_attributes.c_lflag &= ~(ICANON); /* DISABLE canonical mode. */

        /* Disables the special characters EOF, EOL, EOL2, ERASE, KILL, LNEXT, REPRINT, STATUS, and WERASE, and buffers by lines. */

   new_attributes.c_lflag &= ~(ECHO); /* DISABLE this: Echo input characters. */

   new_attributes.c_lflag &= ~(ECHOE);

        /* DISABLE this: If ICANON is also set, the ERASE character erase  the preceding input */ 

        /* character, and WERASE erases the preceding word. */

   new_attributes.c_lflag &= ~(ISIG); /* DISABLE this: When any of the characters INTR, QUIT, SUSP,*/ 

        /* or DSUSP are received, generate the corresponding signal.*/

    new_attributes.c_cc[VMIN]=1; /* Minimum number of characters for non-canonical read.*/

  new_attributes.c_cc[VTIME]=0; /* Timeout in deciseconds for non-canonical read.*/

    tcsetattr(tty_fd, TCSANOW, &new_attributes);

}

  return tty_fd;

}

void close_tty(inttty_fd)

{

        tcsetattr(tty_fd, TCSANOW, &tty_saved_attributes);

}

int main(int argc, char *argv[]) 

{

    if (argc!=2)

        exit(EXIT_FAILURE);

    printf("Lunartec\n");

    tty_fd= tty_open(argv[1]);

    if (tty_fd<0)   {

                    fprintf (stderr,"tty open error %s\n", strerror(errno));

                    exit(EXIT_FAILURE);

                    } 

write(tty_fd,"Bonjour le monde ",18);

    close_tty(tty_fd);

    return EXIT_SUCCESS;

}