ardupilot/libraries/AP_EEProm/AP_EEProm.h

130 lines
3.1 KiB
C++

#ifndef AP_EEProm_H
#define AP_EEProm_H
/*
* AP_EEProm.h
* Copyright (C) James Goppert 2010 <james.goppert@gmail.com>
*
* This file is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This file 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <AP_Common.h>
#include <AP_Vector.h>
#include <avr/eeprom.h>
#include <avr/pgmspace.h>
/**
* The interface for data entries in the eeprom registry
*/
class AP_EEPromEntry
{
public:
/**
* Pure virtual function for setting the data value as a float. The function must handle the cast to
* the stored variable types.
*/
virtual void setEntry(float val) = 0;
/**
* Pure virtual function for getting data as a float. The function must handle the cast from the
* stored variable types.
*/
virtual float getEntry() = 0;
/**
* Pure virtual function for getting entry name.
*/
virtual const char * getEntryName() = 0;
/**
* Get the id of the variable.
*/
virtual uint16_t getEntryId() = 0;
/**
* Get the address of the variable.
*/
virtual uint16_t getEntryAddress() = 0;
};
/**
* The main EEProm Registry class.
*/
class AP_EEPromRegistry : public Vector<AP_EEPromEntry *>
{
public:
/**
* Default constructor
*/
AP_EEPromRegistry(uint16_t maxSize) :
_newAddress(0), _newId(0), _maxSize(maxSize)
{
}
/**
* Add an entry to the registry
*/
void add(AP_EEPromEntry * entry, uint16_t & id, uint16_t & address, size_t size);
private:
uint16_t _newAddress; /** the address for the next new variable*/
uint16_t _newId; /** the id of the next new variable*/
uint16_t _maxSize; /** the maximum size of the eeprom memory*/
};
/**
* Global eepromRegistry declaration.
*/
extern AP_EEPromRegistry eepromRegistry;
/**
* The EEProm Variable template class. This class
* implements get/set/save/load etc for the
* abstract template type.
*/
template <class type>
class AP_EEPromVar : public AP_EEPromEntry, public AP_Var<type>
{
public:
/**
* The default constrcutor
*/
AP_EEPromVar(type data = 0, const char * name = "", bool sync=false) :
AP_Var<type>(data,name,sync)
{
eepromRegistry.add(this,_id,_address,sizeof(type));
}
virtual void setEntry(float val) { this->setAsFloat(val); }
virtual float getEntry() { return this->getAsFloat(); }
virtual const char * getEntryName() { return this->getName(); }
/**
* Get the id of the variable.
*/
virtual uint16_t getEntryId() { return _id; }
/**
* Get the address of the variable.
*/
virtual uint16_t getEntryAddress() { return _address; }
private:
uint16_t _id; /** Variable identifier */
uint16_t _address; /** EEProm address of variable */
};
#endif