mirror of
https://github.com/DCC-EX/CommandStation-EX.git
synced 2024-12-24 05:11:24 +01:00
668 lines
20 KiB
C++
668 lines
20 KiB
C++
/*
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* © 2020, Chris Harlow. All rights reserved.
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* © 2020, Harald Barth.
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*
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* This file is part of CommandStation-EX
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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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#include "StringFormatter.h"
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#include "DCCEXParser.h"
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#include "DCC.h"
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#include "DCCWaveform.h"
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#include "Turnouts.h"
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#include "Outputs.h"
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#include "Sensors.h"
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#include "freeMemory.h"
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#include "GITHUB_SHA.h"
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#include "version.h"
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#include "EEStore.h"
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#include "DIAG.h"
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// These keywords are used in the <1> command. The number is what you get if you use the keyword as a parameter.
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// To discover new keyword numbers , use the <$ YOURKEYWORD> command
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const int HASH_KEYWORD_PROG = -29718;
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const int HASH_KEYWORD_MAIN = 11339;
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const int HASH_KEYWORD_JOIN = -30750;
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const int HASH_KEYWORD_CABS = -11981;
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const int HASH_KEYWORD_RAM = 25982;
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const int HASH_KEYWORD_CMD = 9962;
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const int HASH_KEYWORD_WIT = 31594;
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const int HASH_KEYWORD_WIFI = -5583;
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const int HASH_KEYWORD_ACK = 3113;
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const int HASH_KEYWORD_ON = 2657;
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const int HASH_KEYWORD_DCC = 6436;
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const int HASH_KEYWORD_SLOW = -17209;
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const int HASH_KEYWORD_PROGBOOST = -6353;
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const int HASH_KEYWORD_EEPROM = -7168;
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const int HASH_KEYWORD_LIMIT = 27413;
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int DCCEXParser::stashP[MAX_PARAMS];
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bool DCCEXParser::stashBusy;
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Print *DCCEXParser::stashStream = NULL;
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// This is a JMRI command parser, one instance per incoming stream
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// It doesnt know how the string got here, nor how it gets back.
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// It knows nothing about hardware or tracks... it just parses strings and
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// calls the corresponding DCC api.
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// Non-DCC things like turnouts, pins and sensors are handled in additional JMRI interface classes.
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DCCEXParser::DCCEXParser() {}
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void DCCEXParser::flush()
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{
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if (Diag::CMD)
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DIAG(F("\nBuffer flush"));
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bufferLength = 0;
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inCommandPayload = false;
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}
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void DCCEXParser::loop(Stream &stream)
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{
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while (stream.available())
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{
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if (bufferLength == MAX_BUFFER)
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{
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flush();
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}
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char ch = stream.read();
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if (ch == '<')
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{
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inCommandPayload = true;
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bufferLength = 0;
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buffer[0] = '\0';
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}
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else if (ch == '>')
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{
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buffer[bufferLength] = '\0';
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parse(&stream, buffer, false); // Parse this allowing async responses
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inCommandPayload = false;
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break;
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}
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else if (inCommandPayload)
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{
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buffer[bufferLength++] = ch;
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}
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}
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Sensor::checkAll(&stream); // Update and print changes
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}
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int DCCEXParser::splitValues(int result[MAX_PARAMS], const byte *cmd)
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{
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byte state = 1;
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byte parameterCount = 0;
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int runningValue = 0;
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const byte *remainingCmd = cmd + 1; // skips the opcode
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bool signNegative = false;
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// clear all parameters in case not enough found
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for (int i = 0; i < MAX_PARAMS; i++)
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result[i] = 0;
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while (parameterCount < MAX_PARAMS)
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{
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byte hot = *remainingCmd;
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switch (state)
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{
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case 1: // skipping spaces before a param
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if (hot == ' ')
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break;
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if (hot == '\0' || hot == '>')
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return parameterCount;
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state = 2;
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continue;
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case 2: // checking sign
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signNegative = false;
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runningValue = 0;
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state = 3;
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if (hot != '-')
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continue;
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signNegative = true;
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break;
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case 3: // building a parameter
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if (hot >= '0' && hot <= '9')
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{
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runningValue = 10 * runningValue + (hot - '0');
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break;
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}
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if (hot >= 'A' && hot <= 'Z')
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{
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// Since JMRI got modified to send keywords in some rare cases, we need this
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// Super Kluge to turn keywords into a hash value that can be recognised later
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runningValue = ((runningValue << 5) + runningValue) ^ hot;
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break;
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}
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result[parameterCount] = runningValue * (signNegative ? -1 : 1);
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parameterCount++;
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state = 1;
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continue;
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}
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remainingCmd++;
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}
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return parameterCount;
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}
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FILTER_CALLBACK DCCEXParser::filterCallback = 0;
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AT_COMMAND_CALLBACK DCCEXParser::atCommandCallback = 0;
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void DCCEXParser::setFilter(FILTER_CALLBACK filter)
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{
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filterCallback = filter;
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}
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void DCCEXParser::setAtCommandCallback(AT_COMMAND_CALLBACK callback)
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{
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atCommandCallback = callback;
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}
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// See documentation on DCC class for info on this section
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void DCCEXParser::parse(Print *stream, byte *com, bool blocking)
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{
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(void)EEPROM; // tell compiler not to warn this is unused
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if (Diag::CMD)
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DIAG(F("\nPARSING:%s\n"), com);
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int p[MAX_PARAMS];
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while (com[0] == '<' || com[0] == ' ')
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com++; // strip off any number of < or spaces
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byte params = splitValues(p, com);
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byte opcode = com[0];
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if (filterCallback)
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filterCallback(stream, opcode, params, p);
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// Functions return from this switch if complete, break from switch implies error <X> to send
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switch (opcode)
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{
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case '\0':
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return; // filterCallback asked us to ignore
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case 't': // THROTTLE <t [REGISTER] CAB SPEED DIRECTION>
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{
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int cab;
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int tspeed;
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int direction;
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if (params == 4)
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{ // <t REGISTER CAB SPEED DIRECTION>
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cab = p[1];
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tspeed = p[2];
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direction = p[3];
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}
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else if (params == 3)
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{ // <t CAB SPEED DIRECTION>
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cab = p[0];
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tspeed = p[1];
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direction = p[2];
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}
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else
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break;
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// Convert JMRI bizarre -1=emergency stop, 0-126 as speeds
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// to DCC 0=stop, 1= emergency stop, 2-127 speeds
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if (tspeed > 126 || tspeed < -1)
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break; // invalid JMRI speed code
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if (tspeed < 0)
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tspeed = 1; // emergency stop DCC speed
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else if (tspeed > 0)
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tspeed++; // map 1-126 -> 2-127
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if (cab == 0 && tspeed > 1)
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break; // ignore broadcasts of speed>1
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if (direction < 0 || direction > 1)
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break; // invalid direction code
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DCC::setThrottle(cab, tspeed, direction);
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if (params == 4)
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StringFormatter::send(stream, F("<T %d %d %d>"), p[0], p[2], p[3]);
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else
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StringFormatter::send(stream, F("<O>"));
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return;
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}
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case 'f': // FUNCTION <f CAB BYTE1 [BYTE2]>
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if (parsef(stream, params, p))
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return;
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break;
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case 'a': // ACCESSORY <a ADDRESS SUBADDRESS ACTIVATE>
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if (p[2] != (p[2] & 1))
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return;
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DCC::setAccessory(p[0], p[1], p[2] == 1);
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return;
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case 'T': // TURNOUT <T ...>
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if (parseT(stream, params, p))
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return;
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break;
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case 'Z': // OUTPUT <Z ...>
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if (parseZ(stream, params, p))
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return;
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break;
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case 'S': // SENSOR <S ...>
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if (parseS(stream, params, p))
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return;
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break;
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case 'w': // WRITE CV on MAIN <w CAB CV VALUE>
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DCC::writeCVByteMain(p[0], p[1], p[2]);
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return;
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case 'b': // WRITE CV BIT ON MAIN <b CAB CV BIT VALUE>
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DCC::writeCVBitMain(p[0], p[1], p[2], p[3]);
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return;
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case 'W': // WRITE CV ON PROG <W CV VALUE CALLBACKNUM CALLBACKSUB>
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if (!stashCallback(stream, p))
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break;
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DCC::writeCVByte(p[0], p[1], callback_W, blocking);
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return;
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case 'V': // VERIFY CV ON PROG <V CV VALUE> <V CV BIT 0|1>
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if (params == 2)
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{ // <V CV VALUE>
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if (!stashCallback(stream, p))
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break;
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DCC::verifyCVByte(p[0], p[1], callback_Vbyte, blocking);
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return;
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}
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if (params == 3)
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{
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if (!stashCallback(stream, p))
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break;
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DCC::verifyCVBit(p[0], p[1], p[2], callback_Vbit, blocking);
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return;
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}
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break;
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case 'B': // WRITE CV BIT ON PROG <B CV BIT VALUE CALLBACKNUM CALLBACKSUB>
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if (!stashCallback(stream, p))
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break;
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DCC::writeCVBit(p[0], p[1], p[2], callback_B, blocking);
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return;
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case 'R': // READ CV ON PROG
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if (params == 3)
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{ // <R CV CALLBACKNUM CALLBACKSUB>
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if (!stashCallback(stream, p))
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break;
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DCC::readCV(p[0], callback_R, blocking);
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return;
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}
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if (params == 0)
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{ // <R> New read loco id
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if (!stashCallback(stream, p))
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break;
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DCC::getLocoId(callback_Rloco, blocking);
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return;
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}
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break;
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case '1': // POWERON <1 [MAIN|PROG]>
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case '0': // POWEROFF <0 [MAIN | PROG] >
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if (params > 1)
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break;
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{
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POWERMODE mode = opcode == '1' ? POWERMODE::ON : POWERMODE::OFF;
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DCC::setProgTrackSyncMain(false); // Only <1 JOIN> will set this on, all others set it off
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if (params == 0)
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{
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DCCWaveform::mainTrack.setPowerMode(mode);
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DCCWaveform::progTrack.setPowerMode(mode);
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if (mode == POWERMODE::OFF)
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DCC::setProgTrackBoost(false); // Prog track boost mode will not outlive prog track off
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StringFormatter::send(stream, F("<p%c>"), opcode);
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return;
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}
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switch (p[0])
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{
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case HASH_KEYWORD_MAIN:
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DCCWaveform::mainTrack.setPowerMode(mode);
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StringFormatter::send(stream, F("<p%c MAIN>"), opcode);
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return;
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case HASH_KEYWORD_PROG:
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DCCWaveform::progTrack.setPowerMode(mode);
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if (mode == POWERMODE::OFF)
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DCC::setProgTrackBoost(false); // Prog track boost mode will not outlive prog track off
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StringFormatter::send(stream, F("<p%c PROG>"), opcode);
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return;
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case HASH_KEYWORD_JOIN:
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DCCWaveform::mainTrack.setPowerMode(mode);
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DCCWaveform::progTrack.setPowerMode(mode);
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if (mode == POWERMODE::ON)
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{
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DCC::setProgTrackSyncMain(true);
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StringFormatter::send(stream, F("<p1 JOIN>"), opcode);
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}
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else
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StringFormatter::send(stream, F("<p0>"));
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return;
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}
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break;
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}
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return;
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case 'c': // READ CURRENT <c>
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StringFormatter::send(stream, F("<a %d>"), DCCWaveform::mainTrack.getLastCurrent());
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return;
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case 'Q': // SENSORS <Q>
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Sensor::printAll(stream);
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return;
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case 's': // <s>
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StringFormatter::send(stream, F("<p%d>"), DCCWaveform::mainTrack.getPowerMode() == POWERMODE::ON);
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StringFormatter::send(stream, F("<iDCC-EX V-%S / %S / %S G-%S>"), F(VERSION), F(ARDUINO_TYPE), DCC::getMotorShieldName(), F(GITHUB_SHA));
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// TODO Send stats of speed reminders table
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// TODO send status of turnouts etc etc
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return;
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case 'E': // STORE EPROM <E>
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EEStore::store();
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StringFormatter::send(stream, F("<e %d %d %d>"), EEStore::eeStore->data.nTurnouts, EEStore::eeStore->data.nSensors, EEStore::eeStore->data.nOutputs);
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return;
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case 'e': // CLEAR EPROM <e>
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EEStore::clear();
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StringFormatter::send(stream, F("<O>"));
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return;
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case ' ': // < >
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StringFormatter::send(stream, F("\n"));
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return;
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case 'D': // < >
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if (parseD(stream, params, p))
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return;
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return;
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case '#': // NUMBER OF LOCOSLOTS <#>
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StringFormatter::send(stream, F("<# %d>"), MAX_LOCOS);
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return;
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case 'F': // New command to call the new Loco Function API <F cab func 1|0>
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if (Diag::CMD)
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DIAG(F("Setting loco %d F%d %S"), p[0], p[1], p[2] ? F("ON") : F("OFF"));
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DCC::setFn(p[0], p[1], p[2] == 1);
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return;
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case '+': // Complex Wifi interface command (not usual parse)
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if (atCommandCallback) {
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atCommandCallback(com);
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return;
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}
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break;
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default: //anything else will diagnose and drop out to <X>
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DIAG(F("\nOpcode=%c params=%d\n"), opcode, params);
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for (int i = 0; i < params; i++)
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DIAG(F("p[%d]=%d (0x%x)\n"), i, p[i], p[i]);
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break;
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} // end of opcode switch
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// Any fallout here sends an <X>
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StringFormatter::send(stream, F("<X>"));
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}
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bool DCCEXParser::parseZ(Print *stream, int params, int p[])
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{
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switch (params)
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{
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case 2: // <Z ID ACTIVATE>
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{
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Output *o = Output::get(p[0]);
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if (o == NULL)
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return false;
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o->activate(p[1]);
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StringFormatter::send(stream, F("<Y %d %d>"), p[0], p[1]);
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}
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return true;
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case 3: // <Z ID PIN INVERT>
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Output::create(p[0], p[1], p[2], 1);
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return true;
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case 1: // <Z ID>
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return Output::remove(p[0]);
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case 0: // <Z>
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{
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bool gotone = false;
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for (Output *tt = Output::firstOutput; tt != NULL; tt = tt->nextOutput)
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{
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gotone = true;
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StringFormatter::send(stream, F("<Y %d %d %d %d>"), tt->data.id, tt->data.pin, tt->data.iFlag, tt->data.oStatus);
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}
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return gotone;
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}
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default:
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return false;
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}
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}
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//===================================
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bool DCCEXParser::parsef(Print *stream, int params, int p[])
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{
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// JMRI sends this info in DCC message format but it's not exactly
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// convenient for other processing
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if (params == 2)
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{
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byte instructionField = p[1] & 0xE0; // 1110 0000
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if (instructionField == 0x80) // 1000 0000 Function group 1
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{
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// Shuffle bits from order F0 F4 F3 F2 F1 to F4 F3 F2 F1 F0
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byte normalized = (p[1] << 1 & 0x1e) | (p[1] >> 4 & 0x01);
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funcmap(p[0], normalized, 0, 4);
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}
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else if (instructionField == 0xA0) // 1010 0000 Function group 2
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{
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if (p[1] & 0x10) // 0001 0000 Bit selects F5toF8 / F9toF12
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funcmap(p[0], p[1], 5, 8);
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else
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funcmap(p[0], p[1], 9, 12);
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}
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}
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if (params == 3)
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{
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if (p[1] == 222)
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funcmap(p[0], p[2], 13, 20);
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else if (p[1] == 223)
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funcmap(p[0], p[2], 21, 28);
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}
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(void)stream; // NO RESPONSE
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return true;
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}
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void DCCEXParser::funcmap(int cab, byte value, byte fstart, byte fstop)
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{
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for (int i = fstart; i <= fstop; i++)
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{
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DCC::setFn(cab, i, value & 1);
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value >>= 1;
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}
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}
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//===================================
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bool DCCEXParser::parseT(Print *stream, int params, int p[])
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{
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switch (params)
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{
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case 0: // <T> show all turnouts
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{
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bool gotOne = false;
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for (Turnout *tt = Turnout::firstTurnout; tt != NULL; tt = tt->nextTurnout)
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{
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gotOne = true;
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StringFormatter::send(stream, F("<H %d %d>"), tt->data.id, tt->data.tStatus & STATUS_ACTIVE);
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}
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return gotOne; // will <X> if none found
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}
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|
|
|
case 1: // <T id> delete turnout
|
|
if (!Turnout::remove(p[0]))
|
|
return false;
|
|
StringFormatter::send(stream, F("<O>"));
|
|
return true;
|
|
|
|
case 2: // <T id 0|1> activate turnout
|
|
{
|
|
Turnout *tt = Turnout::get(p[0]);
|
|
if (!tt)
|
|
return false;
|
|
tt->activate(p[1]);
|
|
StringFormatter::send(stream, F("<H %d %d>"), tt->data.id, tt->data.tStatus & STATUS_ACTIVE);
|
|
}
|
|
return true;
|
|
|
|
case 3: // <T id addr subaddr> define turnout
|
|
if (!Turnout::create(p[0], p[1], p[2]))
|
|
return false;
|
|
StringFormatter::send(stream, F("<O>"));
|
|
return true;
|
|
|
|
default:
|
|
return false; // will <x>
|
|
}
|
|
}
|
|
|
|
bool DCCEXParser::parseS(Print *stream, int params, int p[])
|
|
{
|
|
|
|
switch (params)
|
|
{
|
|
case 3: // <S id pin pullup> create sensor. pullUp indicator (0=LOW/1=HIGH)
|
|
Sensor::create(p[0], p[1], p[2]);
|
|
return true;
|
|
|
|
case 1: // S id> remove sensor
|
|
if (Sensor::remove(p[0]))
|
|
return true;
|
|
break;
|
|
|
|
case 0: // <S> lit sensor states
|
|
for (Sensor *tt = Sensor::firstSensor; tt != NULL; tt = tt->nextSensor)
|
|
{
|
|
StringFormatter::send(stream, F("<Q %d %d %d>"), tt->data.snum, tt->data.pin, tt->data.pullUp);
|
|
}
|
|
return true;
|
|
|
|
default: // invalid number of arguments
|
|
break;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool DCCEXParser::parseD(Print *stream, int params, int p[])
|
|
{
|
|
if (params == 0)
|
|
return false;
|
|
bool onOff = (params > 0) && (p[1] == 1 || p[1] == HASH_KEYWORD_ON); // dont care if other stuff or missing... just means off
|
|
switch (p[0])
|
|
{
|
|
case HASH_KEYWORD_CABS: // <D CABS>
|
|
DCC::displayCabList(stream);
|
|
return true;
|
|
|
|
case HASH_KEYWORD_RAM: // <D RAM>
|
|
StringFormatter::send(stream, F("\nFree memory=%d\n"), freeMemory());
|
|
break;
|
|
|
|
case HASH_KEYWORD_ACK: // <D ACK ON/OFF>
|
|
if (params >= 2 && p[1] == HASH_KEYWORD_LIMIT) {
|
|
DCCWaveform::progTrack.setAckLimit(p[2]);
|
|
StringFormatter::send(stream, F("\nAck limit=%dmA\n"), p[2]);
|
|
} else
|
|
Diag::ACK = onOff;
|
|
return true;
|
|
|
|
case HASH_KEYWORD_CMD: // <D CMD ON/OFF>
|
|
Diag::CMD = onOff;
|
|
return true;
|
|
|
|
case HASH_KEYWORD_WIFI: // <D WIFI ON/OFF>
|
|
Diag::WIFI = onOff;
|
|
return true;
|
|
|
|
case HASH_KEYWORD_WIT: // <D WIT ON/OFF>
|
|
Diag::WITHROTTLE = onOff;
|
|
return true;
|
|
|
|
case HASH_KEYWORD_DCC:
|
|
DCCWaveform::setDiagnosticSlowWave(params >= 1 && p[1] == HASH_KEYWORD_SLOW);
|
|
return true;
|
|
|
|
case HASH_KEYWORD_PROGBOOST:
|
|
DCC::setProgTrackBoost(true);
|
|
return true;
|
|
|
|
case HASH_KEYWORD_EEPROM:
|
|
if (params >= 1)
|
|
EEStore::dump(p[1]);
|
|
return true;
|
|
|
|
default: // invalid/unknown
|
|
break;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// CALLBACKS must be static
|
|
bool DCCEXParser::stashCallback(Print *stream, int p[MAX_PARAMS])
|
|
{
|
|
if (stashBusy )
|
|
return false;
|
|
stashBusy = true;
|
|
stashStream = stream;
|
|
memcpy(stashP, p, MAX_PARAMS * sizeof(p[0]));
|
|
return true;
|
|
}
|
|
void DCCEXParser::callback_W(int result)
|
|
{
|
|
StringFormatter::send(stashStream, F("<r%d|%d|%d %d>"), stashP[2], stashP[3], stashP[0], result == 1 ? stashP[1] : -1);
|
|
stashBusy = false;
|
|
}
|
|
|
|
void DCCEXParser::callback_B(int result)
|
|
{
|
|
StringFormatter::send(stashStream, F("<r%d|%d|%d %d %d>"), stashP[3], stashP[4], stashP[0], stashP[1], result == 1 ? stashP[2] : -1);
|
|
stashBusy = false;
|
|
}
|
|
void DCCEXParser::callback_Vbit(int result)
|
|
{
|
|
StringFormatter::send(stashStream, F("<v %d %d %d>"), stashP[0], stashP[1], result);
|
|
stashBusy = false;
|
|
}
|
|
void DCCEXParser::callback_Vbyte(int result)
|
|
{
|
|
StringFormatter::send(stashStream, F("<v %d %d>"), stashP[0], result);
|
|
stashBusy = false;
|
|
}
|
|
|
|
void DCCEXParser::callback_R(int result)
|
|
{
|
|
StringFormatter::send(stashStream, F("<r%d|%d|%d %d>"), stashP[1], stashP[2], stashP[0], result);
|
|
stashBusy = false;
|
|
}
|
|
|
|
void DCCEXParser::callback_Rloco(int result)
|
|
{
|
|
StringFormatter::send(stashStream, F("<r %d>"), result);
|
|
stashBusy = false;
|
|
}
|