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CommandStation-EX/Turnouts.h
2022-01-07 02:28:35 +01:00

306 lines
8.6 KiB
C++

/*
* © 2021 Neil McKechnie
* © 2021 M Steve Todd
* © 2021 Fred Decker
* © 2020-2021 Harald Barth
* © 2020-2021 Chris Harlow
* © 2013-2016 Gregg E. Berman
* All rights reserved.
*
* This file is part of CommandStation-EX
*
* This 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.
*
* It 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 CommandStation. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef TURNOUTS_H
#define TURNOUTS_H
//#define EESTOREDEBUG
#include "Arduino.h"
#include "IODevice.h"
#include "StringFormatter.h"
// Turnout type definitions
enum {
TURNOUT_DCC = 1,
TURNOUT_SERVO = 2,
TURNOUT_VPIN = 3,
TURNOUT_LCN = 4,
};
/*************************************************************************************
* Turnout - Base class for turnouts.
*
*************************************************************************************/
class Turnout {
protected:
/*
* Object data
*/
// The TurnoutData struct contains data common to all turnout types, that
// is written to EEPROM when the turnout is saved.
// The first byte of this struct contains the 'closed' flag which is
// updated whenever the turnout changes from thrown to closed and
// vice versa. If the turnout has been saved, then this byte is rewritten
// when changed in RAM. The 'closed' flag must be located in the first byte.
struct TurnoutData {
union {
struct {
bool closed : 1;
bool _rfu: 2;
uint8_t turnoutType : 5;
};
uint8_t flags;
};
uint16_t id;
} _turnoutData; // 3 bytes
// Address in eeprom of first byte of the _turnoutData struct (containing the closed flag).
// Set to zero if the object has not been saved in EEPROM, e.g. for newly created Turnouts, and
// for all LCN turnouts.
uint16_t _eepromAddress = 0;
// Pointer to next turnout on linked list.
Turnout *_nextTurnout = 0;
/*
* Constructor
*/
Turnout(uint16_t id, uint8_t turnoutType, bool closed) {
_turnoutData.id = id;
_turnoutData.turnoutType = turnoutType;
_turnoutData.closed = closed;
add(this);
}
/*
* Static data
*/
static Turnout *_firstTurnout;
static int _turnoutlistHash;
/*
* Virtual functions
*/
virtual bool setClosedInternal(bool close) = 0; // Mandatory in subclass
virtual void save() {}
/*
* Static functions
*/
static Turnout *get(uint16_t id);
static void add(Turnout *tt);
public:
/*
* Static data
*/
static int turnoutlistHash;
static const bool useClassicTurnoutCommands;
/*
* Public base class functions
*/
inline bool isClosed() { return _turnoutData.closed; };
inline bool isThrown() { return !_turnoutData.closed; }
inline bool isType(uint8_t type) { return _turnoutData.turnoutType == type; }
inline uint16_t getId() { return _turnoutData.id; }
inline Turnout *next() { return _nextTurnout; }
void printState(Print *stream);
/*
* Virtual functions
*/
virtual void print(Print *stream) {
(void)stream; // avoid compiler warnings.
}
virtual ~Turnout() {} // Destructor
/*
* Public static functions
*/
inline static bool exists(uint16_t id) { return get(id) != 0; }
static bool remove(uint16_t id);
static bool isClosed(uint16_t id);
inline static bool isThrown(uint16_t id) {
return !isClosed(id);
}
static bool setClosed(uint16_t id, bool closeFlag);
inline static bool setClosed(uint16_t id) {
return setClosed(id, true);
}
inline static bool setThrown(uint16_t id) {
return setClosed(id, false);
}
static bool setClosedStateOnly(uint16_t id, bool close);
inline static Turnout *first() { return _firstTurnout; }
#ifndef DISABLE_EEPROM
// Load all turnout definitions.
static void load();
// Load one turnout definition
static Turnout *loadTurnout();
// Save all turnout definitions
static void store();
#endif
static void printAll(Print *stream) {
for (Turnout *tt = _firstTurnout; tt != 0; tt = tt->_nextTurnout)
StringFormatter::send(stream, F("<H %d %d>\n"),tt->getId(), tt->isThrown());
}
};
/*************************************************************************************
* ServoTurnout - Turnout controlled by servo device.
*
*************************************************************************************/
class ServoTurnout : public Turnout {
private:
// ServoTurnoutData contains data specific to this subclass that is
// written to EEPROM when the turnout is saved.
struct ServoTurnoutData {
VPIN vpin;
uint16_t closedPosition : 12;
uint16_t thrownPosition : 12;
uint8_t profile;
} _servoTurnoutData; // 6 bytes
// Constructor
ServoTurnout(uint16_t id, VPIN vpin, uint16_t thrownPosition, uint16_t closedPosition, uint8_t profile, bool closed);
public:
// Create function
static Turnout *create(uint16_t id, VPIN vpin, uint16_t thrownPosition, uint16_t closedPosition, uint8_t profile, bool closed=true);
// Load a Servo turnout definition from EEPROM. The common Turnout data has already been read at this point.
static Turnout *load(struct TurnoutData *turnoutData);
void print(Print *stream) override;
protected:
// ServoTurnout-specific code for throwing or closing a servo turnout.
bool setClosedInternal(bool close) override;
void save() override;
};
/*************************************************************************************
* DCCTurnout - Turnout controlled by DCC Accessory Controller.
*
*************************************************************************************/
class DCCTurnout : public Turnout {
private:
// DCCTurnoutData contains data specific to this subclass that is
// written to EEPROM when the turnout is saved.
struct DCCTurnoutData {
// DCC address (Address in bits 15-2, subaddress in bits 1-0)
struct {
uint16_t address : 14;
uint8_t subAddress : 2;
};
} _dccTurnoutData; // 2 bytes
// Constructor
DCCTurnout(uint16_t id, uint16_t address, uint8_t subAdd);
public:
// Create function
static Turnout *create(uint16_t id, uint16_t add, uint8_t subAdd);
// Load a VPIN turnout definition from EEPROM. The common Turnout data has already been read at this point.
static Turnout *load(struct TurnoutData *turnoutData);
void print(Print *stream) override;
// Flag whether DCC Accessory packets are to contain 1=close/0=throw(RCN-213) or 1=throw/0-close (DCC++ Classic)
static const bool rcn213Compliant;
protected:
bool setClosedInternal(bool close) override;
void save() override;
};
/*************************************************************************************
* VpinTurnout - Turnout controlled through a HAL vpin.
*
*************************************************************************************/
class VpinTurnout : public Turnout {
private:
// VpinTurnoutData contains data specific to this subclass that is
// written to EEPROM when the turnout is saved.
struct VpinTurnoutData {
VPIN vpin;
} _vpinTurnoutData; // 2 bytes
// Constructor
VpinTurnout(uint16_t id, VPIN vpin, bool closed);
public:
// Create function
static Turnout *create(uint16_t id, VPIN vpin, bool closed=true);
// Load a VPIN turnout definition from EEPROM. The common Turnout data has already been read at this point.
static Turnout *load(struct TurnoutData *turnoutData);
void print(Print *stream) override;
protected:
bool setClosedInternal(bool close) override;
void save() override;
};
/*************************************************************************************
* LCNTurnout - Turnout controlled by Loconet
*
*************************************************************************************/
class LCNTurnout : public Turnout {
private:
// LCNTurnout has no specific data, and in any case is not written to EEPROM!
// struct LCNTurnoutData {
// } _lcnTurnoutData; // 0 bytes
// Constructor
LCNTurnout(uint16_t id, bool closed);
public:
// Create function
static Turnout *create(uint16_t id, bool closed=true);
bool setClosedInternal(bool close) override;
// LCN turnouts not saved to EEPROM.
//void save() override { }
//static Turnout *load(struct TurnoutData *turnoutData) {
void print(Print *stream) override;
};
#endif