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IO_DCCAccessory.cpp
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IO_DCCAccessory.cpp
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/*
* © 2021, Neil McKechnie. All rights reserved.
*
* This file is part of DCC++EX API
*
* 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/>.
*/
#include "DCC.h"
#include "IODevice.h"
#include "DIAG.h"
#include "defines.h"
#define PACKEDADDRESS(addr, subaddr) (((addr) << 2) + (subaddr))
#define ADDRESS(packedaddr) ((packedaddr) >> 2)
#define SUBADDRESS(packedaddr) ((packedaddr) % 4)
void DCCAccessoryDecoder::create(VPIN firstVpin, int nPins, int DCCAddress, int DCCSubaddress) {
if (checkNoOverlap(firstVpin,nPins)) new DCCAccessoryDecoder(firstVpin, nPins, DCCAddress, DCCSubaddress);
}
// Constructors
DCCAccessoryDecoder::DCCAccessoryDecoder(VPIN vpin, int nPins, int DCCAddress, int DCCSubaddress) {
_firstVpin = vpin;
_nPins = nPins;
_packedAddress = PACKEDADDRESS(DCCAddress, DCCSubaddress);
addDevice(this);
}
void DCCAccessoryDecoder::_begin() {
#if defined(DIAG_IO)
_display();
#endif
}
// Device-specific write function. State 1=closed, 0=thrown. Adjust for RCN-213 compliance
void DCCAccessoryDecoder::_write(VPIN id, int state) {
int packedAddress = _packedAddress + id - _firstVpin;
#if defined(HAL_ACCESSORY_COMMAND_REVERSE)
state = !state;
#ifdef DIAG_IO
DIAG(F("DCC Write Linear Address:%d State:%d (inverted)"), packedAddress, state);
#endif
#else
#ifdef DIAG_IO
DIAG(F("DCC Write Linear Address:%d State:%d"), packedAddress, state);
#endif
#endif
DCC::setAccessory(ADDRESS(packedAddress), SUBADDRESS(packedAddress), state);
}
void DCCAccessoryDecoder::_display() {
int endAddress = _packedAddress + _nPins - 1;
DIAG(F("DCCAccessoryDecoder Configured on Vpins:%u-%u Addresses %d/%d-%d/%d)"), _firstVpin, _firstVpin+_nPins-1,
ADDRESS(_packedAddress), SUBADDRESS(_packedAddress), ADDRESS(endAddress), SUBADDRESS(endAddress));
}