mirror of
https://github.com/DCC-EX/CommandStation-EX.git
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122 lines
3.6 KiB
C++
122 lines
3.6 KiB
C++
/*
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* © 2020, Chris Harlow. All rights reserved.
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*
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* This file is part of Asbelos DCC API
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*
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* This is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* It is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with CommandStation. If not, see <https://www.gnu.org/licenses/>.
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*/
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/*
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* Turnout data is stored in a structure whose length depends on the
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* type of turnout. There is a common header of 3 bytes, followed by
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* 2 bytes for DCC turnout, 5 bytes for servo turnout, 2 bytes for a
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* VPIN turnout, or zero bytes for an LCN turnout.
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* The variable length allows the limited space in EEPROM to be used effectively.
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*/
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#ifndef Turnouts_h
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#define Turnouts_h
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#include <Arduino.h>
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#include "DCC.h"
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#include "LCN.h"
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#include "IODevice.h"
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const byte STATUS_ACTIVE=0x80; // Flag as activated in tStatus field
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const byte STATUS_TYPE = 0x7f; // Mask for turnout type in tStatus field
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// The struct 'header' is used to determine the length of the
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// overlaid data so must be at least as long as the anonymous fields it
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// is overlaid with.
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struct TurnoutData {
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// Header common to all turnouts
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union {
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struct {
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int id;
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uint8_t tStatus;
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uint8_t size;
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} header;
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struct {
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int id;
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union {
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uint8_t tStatus;
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struct {
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uint8_t active: 1;
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uint8_t type: 5;
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uint8_t :2;
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};
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};
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uint8_t size; // set to actual total length of used structure
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};
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};
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// Turnout-type-specific structure elements, different length depending
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// on turnout type. This allows the data to be packed efficiently
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// in the EEPROM.
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union {
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struct {
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// DCC address (Address in bits 15-2, subaddress in bits 1-0
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uint16_t address; // CS currently supports linear address 1-2048
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// That's DCC accessory address 1-512 and subaddress 0-3.
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} dccAccessoryData;
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struct {
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VPIN vpin;
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uint16_t activePosition : 12; // 0-4095
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uint16_t inactivePosition : 12; // 0-4095
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uint8_t profile;
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} servoData;
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struct {
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} lcnData;
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struct {
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VPIN vpin;
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} vpinData;
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};
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};
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class Turnout {
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public:
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static Turnout *firstTurnout;
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static int turnoutlistHash;
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TurnoutData data;
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Turnout *nextTurnout;
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static bool activate(int n, bool state);
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static Turnout* get(int);
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static bool remove(int);
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static bool isActive(int);
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static void setActive(int n, bool state);
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static void load();
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static void store();
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static Turnout *createServo(int id , VPIN vpin , uint16_t activeAngle, uint16_t inactiveAngle, uint8_t profile=1, uint8_t initialState=0);
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static Turnout *createVpin(int id, VPIN vpin, uint8_t initialState=0);
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static Turnout *createDCC(int id, uint16_t address, uint8_t subAddress);
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static Turnout *createLCN(int id, uint8_t initialState=0);
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static Turnout *create(int id, int params, int16_t p[]);
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static Turnout *create(int id);
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void activate(bool state);
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void setActive(bool state);
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bool isActive();
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static void printAll(Print *);
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void print(Print *stream);
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#ifdef EESTOREDEBUG
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static void print(Turnout *tt);
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#endif
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private:
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int num; // EEPROM address of tStatus in TurnoutData struct, or zero if not stored.
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}; // Turnout
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#endif
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