Link.h

#ifndef LINK_H
#define LINK_H

#include <linux/serial.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <time.h>
#include <termios.h>
#include <sys/select.h>
#include <sys/ioctl.h>
#include "defs.h"

#define DEFAULT_BAUDRATE B38400
#define DEFAULT_MAX_ATTEMPTS 3
#define DEFAULT_TIMEOUT 5.0

#define FLAG 0x7E
#define A 0x03
#define C_SET 0x03
#define C_UA 0x07
#define C_DISC 0x0B
#define RR 0x05
#define REJ 0x01
#define ESC 0x7D

typedef struct {
    unsigned char F_BEG, df_A, df_C;
    unsigned int extraPackageFieldSize; /* in bytes */
    unsigned char BCC1[2];
    unsigned char packageField[1];
} dataFrame;

typedef struct {
    char port[20];
    int baudrate; //Value of -1 means default is used
    unsigned int sequenceNumber;
    unsigned int timeout;
    unsigned int numMaxTransmissions;
    unsigned long int numTimeouts;
    unsigned long long int numReceivedREJ;
    unsigned long long int numRetransmittedFrames;
    unsigned long long int totalDataSent;
    int debugMode, wrongBCC2rate, BCC2wasWrong;
    unsigned char rightBCC2[2];
} linkLayer;

linkLayer* LLayer;
struct termios oldtio,newtio;

void createNewLinkLayer(char* portname);
void createNewLinkLayerOptions(char* portname,int baudrate, unsigned int numMaxTransmissions, unsigned int timeout);

int llopen();
int llclose(int fd);
int llwrite(int fd, unsigned char* applicationPackage, int length);
int llread(int fd, unsigned char* buffer, int length);

#endif