/* liblcd.h -- Copyright 1999 by Nathan Anderson, ALL RIGHTS RESERVED
   See the comments in liblcd.c for more information about your rights
   under the license that this code has been placed under.             */

#ifndef LIBLCD_H
#  define LIBLCD_H

#  include <fcntl.h>
#  include <stdio.h>
#  include <stdlib.h>
#  include <string.h>
#  include <sys/types.h>
#  include <sys/stat.h>
#  include <termios.h>
#  include <unistd.h>

/* constants */
#  define ON    1
#  define OFF   0
#  define BLACK 1
#  define WHITE 0
#  define ROW1  1
#  define ROW2  2
#  define ROW3  4
#  define ROW4  8

/* init possible settings */
#  define BACKLIGHT  1
#  define INVERSETXT 2
#  define CLEARSCR   4

typedef struct termios termios;

/* error codes */
#  define NUM_ERR   7

#  define ELCDBAUD  1
#  define ELCDOPEN  2
#  define ELCDNOPN  3
#  define ELCDNINI  4
#  define ELCDINIT  5
#  define ELCDWRIT  6
#  define ELCDVOOB  7
#  define ELCDFAKE  8

/* status codes */
#  define SLCDOPEN 1 /* port has been opened */
#  define SLCDINIT 2 /* LCD has been init'd */

#  ifdef LIBLCD_C

#    define BUFSIZE 80

const int _liblcd_majorv = 1;
const int _liblcd_minorv = 0;
const int _liblcd_revv   = 0;

const char * err_str[ NUM_ERR + 1 ] =
{
   "speed set fail",            /* ELCDBAUD */
   "open port fail",            /* ELCDOPEN */
   "LCD port not open fail",    /* ELCDNOPN */
   "LCD not initialized fail",  /* ELCDNINI */
   "initialization fail",       /* ELCDINIT */
   "write to port fail",        /* ELCDWRIT */
   "values out-of-bounds fail", /* ELCDLPOS */
   "false error non-fail"       /* ELCDFAKE */
};

int     status = 0;
int     fd_com;
termios oldtio;
char    buf[ BUFSIZE + 1 ];

#  endif

/* LCD port control functions */
int lcd_open( const char *, const speed_t );
int lcd_init( char );
int lcd_reopen( const char * );
int lcd_close( );
int lcd_err( int, const char * );

/* LCD text manipulation functions */
int lcd_clear( );
int lcd_gotoxy( int, int );
int lcd_write( const char * );
int lcd_flush( );

/* LCD feature control functions */
int lcd_backlight( int );
int lcd_inversetxt( int );

/* LCD graphics manipulation functions */
int lcd_g_setcolor( int );
int lcd_g_loadimg( int );
int lcd_g_drawline( int, int, int, int );
int lcd_g_drawbox( int, int, int, int );
int lcd_g_plotdot( int, int );
int lcd_g_revline( int );

#endif