Password USB Key

/*
  EEPROM.h - EEPROM library
  Original Copyright (c) 2006 David A. Mellis.  All right reserved.
  New version by Christopher Andrews 2015.

  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.

  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

#ifndef EEPROM_h
#define EEPROM_h

#include <inttypes.h>
#include <avr/eeprom.h>
#include <avr/io.h>

/***
    EERef class.
    
    This object references an EEPROM cell.
    Its purpose is to mimic a typical byte of RAM, however its storage is the EEPROM.
    This class has an overhead of two bytes, similar to storing a pointer to an EEPROM cell.
***/

struct EERef{

    EERef( const int index )
        : index( index )                 {}
    
    //Access/read members.
    uint8_t operator*() const            { return eeprom_read_byte( (uint8_t*) index ); }
    operator const uint8_t() const       { return **this; }
    
    //Assignment/write members.
    EERef &operator=( const EERef &ref ) { return *this = *ref; }
    EERef &operator=( uint8_t in )       { return eeprom_write_byte( (uint8_t*) index, in ), *this;  }
    EERef &operator +=( uint8_t in )     { return *this = **this + in; }
    EERef &operator -=( uint8_t in )     { return *this = **this - in; }
    EERef &operator *=( uint8_t in )     { return *this = **this * in; }
    EERef &operator /=( uint8_t in )     { return *this = **this / in; }
    EERef &operator ^=( uint8_t in )     { return *this = **this ^ in; }
    EERef &operator %=( uint8_t in )     { return *this = **this % in; }
    EERef &operator &=( uint8_t in )     { return *this = **this & in; }
    EERef &operator |=( uint8_t in )     { return *this = **this | in; }
    EERef &operator <<=( uint8_t in )    { return *this = **this << in; }
    EERef &operator >>=( uint8_t in )    { return *this = **this >> in; }
    
    EERef &update( uint8_t in )          { return  in != *this ? *this = in : *this; }
    
    /** Prefix increment/decrement **/
    EERef& operator++()                  { return *this += 1; }
    EERef& operator--()                  { return *this -= 1; }
    
    /** Postfix increment/decrement **/
    uint8_t operator++ (int){ 
        uint8_t ret = **this;
        return ++(*this), ret;
    }

    uint8_t operator-- (int){ 
        uint8_t ret = **this;
        return --(*this), ret;
    }
    
    int index; //Index of current EEPROM cell.
};

/***
    EEPtr class.
    
    This object is a bidirectional pointer to EEPROM cells represented by EERef objects.
    Just like a normal pointer type, this can be dereferenced and repositioned using 
    increment/decrement operators.
***/

struct EEPtr{

    EEPtr( const int index )
        : index( index )                {}
        
    operator const int() const          { return index; }
    EEPtr &operator=( int in )          { return index = in, *this; }
    
    //Iterator functionality.
    bool operator!=( const EEPtr &ptr ) { return index != ptr.index; }
    EERef operator*()                   { return index; }
    
    /** Prefix & Postfix increment/decrement **/
    EEPtr& operator++()                 { return ++index, *this; }
    EEPtr& operator--()                 { return --index, *this; }
    EEPtr operator++ (int)              { return index++; }
    EEPtr operator-- (int)              { return index--; }

    int index; //Index of current EEPROM cell.
};

/***
    EEPROMClass class.
    
    This object represents the entire EEPROM space.
    It wraps the functionality of EEPtr and EERef into a basic interface.
    This class is also 100% backwards compatible with earlier Arduino core releases.
***/

struct EEPROMClass{

    //Basic user access methods.
    EERef operator[]( const int idx )    { return idx; }
    uint8_t read( int idx )              { return EERef( idx ); }
    void write( int idx, uint8_t val )   { (EERef( idx )) = val; }
    void update( int idx, uint8_t val )  { EERef( idx ).update( val ); }
    
    //STL and C++11 iteration capability.
    EEPtr begin()                        { return 0x00; }
    EEPtr end()                          { return length(); } //Standards requires this to be the item after the last valid entry. The returned pointer is invalid.
    uint16_t length()                    { return E2END + 1; }
    
    //Functionality to 'get' and 'put' objects to and from EEPROM.
    template< typename T > T &get( int idx, T &t ){
        EEPtr e = idx;
        uint8_t *ptr = (uint8_t*) &t;
        for( int count = sizeof(T) ; count ; --count, ++e )  *ptr++ = *e;
        return t;
    }
    
    template< typename T > const T &put( int idx, const T &t ){
        EEPtr e = idx;
        const uint8_t *ptr = (const uint8_t*) &t;
        for( int count = sizeof(T) ; count ; --count, ++e )  (*e).update( *ptr++ );
        return t;
    }
};

static EEPROMClass EEPROM;
#endif

/*
  time.h - low level time and date functions
*/

/*
  July 3 2011 - fixed elapsedSecsThisWeek macro (thanks Vincent Valdy for this)
              - fixed  daysToTime_t macro (thanks maniacbug)
*/     

#ifndef _Time_h
#ifdef __cplusplus
#define _Time_h

#include <inttypes.h>
#ifndef __AVR__
#include <sys/types.h> // for __time_t_defined, but avr libc lacks sys/types.h
#endif


#if !defined(__time_t_defined) // avoid conflict with newlib or other posix libc
typedef unsigned long time_t;
#endif


// This ugly hack allows us to define C++ overloaded functions, when included
// from within an extern "C", as newlib's sys/stat.h does.  Actually it is
// intended to include "time.h" from the C library (on ARM, but AVR does not
// have that file at all).  On Mac and Windows, the compiler will find this
// "Time.h" instead of the C library "time.h", so we may cause other weird
// and unpredictable effects by conflicting with the C library header "time.h",
// but at least this hack lets us define C++ functions as intended.  Hopefully
// nothing too terrible will result from overriding the C library header?!
extern "C++" {
typedef enum {timeNotSet, timeNeedsSync, timeSet
}  timeStatus_t ;

typedef enum {
    dowInvalid, dowSunday, dowMonday, dowTuesday, dowWednesday, dowThursday, dowFriday, dowSaturday
} timeDayOfWeek_t;

typedef enum {
    tmSecond, tmMinute, tmHour, tmWday, tmDay,tmMonth, tmYear, tmNbrFields
} tmByteFields;	   

typedef struct  { 
  uint8_t Second; 
  uint8_t Minute; 
  uint8_t Hour; 
  uint8_t Wday;   // day of week, sunday is day 1
  uint8_t Day;
  uint8_t Month; 
  uint8_t Year;   // offset from 1970; 
} 	tmElements_t, TimeElements, *tmElementsPtr_t;

//convenience macros to convert to and from tm years 
#define  tmYearToCalendar(Y) ((Y) + 1970)  // full four digit year 
#define  CalendarYrToTm(Y)   ((Y) - 1970)
#define  tmYearToY2k(Y)      ((Y) - 30)    // offset is from 2000
#define  y2kYearToTm(Y)      ((Y) + 30)   

typedef time_t(*getExternalTime)();
//typedef void  (*setExternalTime)(const time_t); // not used in this version


/*==============================================================================*/
/* Useful Constants */
#define SECS_PER_MIN  ((time_t)(60UL))
#define SECS_PER_HOUR ((time_t)(3600UL))
#define SECS_PER_DAY  ((time_t)(SECS_PER_HOUR * 24UL))
#define DAYS_PER_WEEK ((time_t)(7UL))
#define SECS_PER_WEEK ((time_t)(SECS_PER_DAY * DAYS_PER_WEEK))
#define SECS_PER_YEAR ((time_t)(SECS_PER_WEEK * 52UL))
#define SECS_YR_2000  ((time_t)(946684800UL)) // the time at the start of y2k
 
/* Useful Macros for getting elapsed time */
#define numberOfSeconds(_time_) (_time_ % SECS_PER_MIN)  
#define numberOfMinutes(_time_) ((_time_ / SECS_PER_MIN) % SECS_PER_MIN) 
#define numberOfHours(_time_) (( _time_% SECS_PER_DAY) / SECS_PER_HOUR)
#define dayOfWeek(_time_)  ((( _time_ / SECS_PER_DAY + 4)  % DAYS_PER_WEEK)+1) // 1 = Sunday
#define elapsedDays(_time_) ( _time_ / SECS_PER_DAY)  // this is number of days since Jan 1 1970
#define elapsedSecsToday(_time_)  (_time_ % SECS_PER_DAY)   // the number of seconds since last midnight 
// The following macros are used in calculating alarms and assume the clock is set to a date later than Jan 1 1971
// Always set the correct time before settting alarms
#define previousMidnight(_time_) (( _time_ / SECS_PER_DAY) * SECS_PER_DAY)  // time at the start of the given day
#define nextMidnight(_time_) ( previousMidnight(_time_)  + SECS_PER_DAY )   // time at the end of the given day 
#define elapsedSecsThisWeek(_time_)  (elapsedSecsToday(_time_) +  ((dayOfWeek(_time_)-1) * SECS_PER_DAY) )   // note that week starts on day 1
#define previousSunday(_time_)  (_time_ - elapsedSecsThisWeek(_time_))      // time at the start of the week for the given time
#define nextSunday(_time_) ( previousSunday(_time_)+SECS_PER_WEEK)          // time at the end of the week for the given time


/* Useful Macros for converting elapsed time to a time_t */
#define minutesToTime_t ((M)) ( (M) * SECS_PER_MIN)  
#define hoursToTime_t   ((H)) ( (H) * SECS_PER_HOUR)  
#define daysToTime_t    ((D)) ( (D) * SECS_PER_DAY) // fixed on Jul 22 2011
#define weeksToTime_t   ((W)) ( (W) * SECS_PER_WEEK)   

/*============================================================================*/
/*  time and date functions   */
int     hour();            // the hour now 
int     hour(time_t t);    // the hour for the given time
int     hourFormat12();    // the hour now in 12 hour format
int     hourFormat12(time_t t); // the hour for the given time in 12 hour format
uint8_t isAM();            // returns true if time now is AM
uint8_t isAM(time_t t);    // returns true the given time is AM
uint8_t isPM();            // returns true if time now is PM
uint8_t isPM(time_t t);    // returns true the given time is PM
int     minute();          // the minute now 
int     minute(time_t t);  // the minute for the given time
int     second();          // the second now 
int     second(time_t t);  // the second for the given time
int     day();             // the day now 
int     day(time_t t);     // the day for the given time
int     weekday();         // the weekday now (Sunday is day 1) 
int     weekday(time_t t); // the weekday for the given time 
int     month();           // the month now  (Jan is month 1)
int     month(time_t t);   // the month for the given time
int     year();            // the full four digit year: (2009, 2010 etc) 
int     year(time_t t);    // the year for the given time

time_t now();              // return the current time as seconds since Jan 1 1970 
void    setTime(time_t t);
void    setTime(int hr,int min,int sec,int day, int month, int yr);
void    adjustTime(long adjustment);

/* date strings */ 
#define dt_MAX_STRING_LEN 9 // length of longest date string (excluding terminating null)
char* monthStr(uint8_t month);
char* dayStr(uint8_t day);
char* monthShortStr(uint8_t month);
char* dayShortStr(uint8_t day);
	
/* time sync functions	*/
timeStatus_t timeStatus(); // indicates if time has been set and recently synchronized
void    setSyncProvider( getExternalTime getTimeFunction); // identify the external time provider
void    setSyncInterval(time_t interval); // set the number of seconds between re-sync

/* low level functions to convert to and from system time                     */
void breakTime(time_t time, tmElements_t &tm);  // break time_t into elements
time_t makeTime(tmElements_t &tm);  // convert time elements into time_t

} // extern "C++"
#endif // __cplusplus
#endif /* _Time_h */