#include <stdio.h>
#include <unistd.h>
#include <sys/time.h>
#include <termios.h>
#include <linux/serial.h>
#include <sys/types.h>
//#include <libusb-1.0/libusb.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>

unsigned char serial (int fd);
void close_serial(int fd);
int z;
int serial_fd;

struct termios saveterm;

int init_serial(char * device, int speed)
{
  struct termios new;
  int fd=open(device,O_RDWR|O_NOCTTY);
  if(fd<0){perror(device); exit(-1);}
  tcgetattr(fd,&saveterm); /* save current port settings */
  bzero(&new,sizeof(new));
  new.c_cflag=CLOCAL|CREAD|speed|CS8;
  new.c_iflag=0;
  new.c_oflag=0;
  new.c_lflag=0;  /* set input mode (non-canonical, no echo,...) */
  new.c_cc[VTIME]=0; /* inter-character timer unused */
  new.c_cc[VMIN]=1; /* blocking read until 1 char received */
  tcflush(fd, TCIFLUSH);
  tcsetattr(fd,TCSANOW,&new);
  return fd;
}

void close_serial(int fd){
tcsetattr(fd,TCSANOW,&saveterm);
close(fd);
}

unsigned char get_serial(int fd)
  {
      char data;
      read(fd,&data,1);
      return data;
  }

void send_serial(int c, int fd)
{
  write(fd, &c,1);
}

void gestion_mps()
{
  	int stop =0;
	char lastmessage=0;

	while(stop==0)
	  {
	    	system("clear");
	printf("\n\n\n\n\n\n________________________________________________________________________________\n");
	printf("                        choississez le mode du mps\n             \n");
	printf(" entrez le numéro correspondant au choix :\n\n ");
	printf(" 0 : La machine se comportera en Base station \n ");
	printf(" 1 : La machine se comportera en cap station \n ");
	printf(" 2 : La machine se comportera en ring station \n ");
	printf(" 3 : La machine se comportera en delivery station \n ");
	printf(" 4 : La machine est à l'arret \n ");
	printf(" 5 : Démarrage, les deux feux clignotent. \n ");
	printf(" 6 : Mettre la machine en marche \n ");
	printf(" 7 : Simuler l'etat occupé  \n ");
	printf(" 8 : Fin du traitement d'objet : reprise \n");

	
	    scanf("%d",&z);
	    if (z != lastmessage)
	      {
		lastmessage=z;
		send_serial(z,serial_fd);
	      }
	  }
}

void fermetures()
{
	close_serial(serial_fd);
}

int main()
{
  serial_fd=init_serial("/dev/ttyACM0",B9600);
  gestion_mps();
  fermetures();
  return 0;
}