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DCCEXParser.cpp
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/*
* © 2022 Paul M Antoine
* © 2021 Neil McKechnie
* © 2021 Mike S
* © 2021-2024 Herb Morton
* © 2020-2023 Harald Barth
* © 2020-2021 M Steve Todd
* © 2020-2021 Fred Decker
* © 2020-2021 Chris Harlow
* © 2022 Colin Murdoch
* 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/>.
*/
/*
List of single character OPCODEs in use for reference.
When determining a new OPCODE for a new feature, refer to this list as the source of truth.
Once a new OPCODE is decided upon, update this list.
Character, Usage
/, |EX-R| interactive commands
-, Remove from reminder table
=, |TM| configuration
!, Emergency stop
@, Reserved for future use - LCD messages to JMRI
#, Request number of supported cabs/locos; heartbeat
+, WiFi AT commands
?, Reserved for future use
0, Track power off
1, Track power on
a, DCC accessory control
A, DCC extended accessory control
b, Write CV bit on main
B, Write CV bit
c, Request current command
C, configure the CS
d,
D, Diagnostic commands
e, Erase EEPROM
E, Store configuration in EEPROM
f, Loco decoder function control (deprecated)
F, Loco decoder function control
g,
G,
h,
H, Turnout state broadcast
i, Server details string
I, Turntable object command, control, and broadcast
j, Throttle responses
J, Throttle queries
k, Reserved for future use - Potentially Railcom
K, Reserved for future use - Potentially Railcom
l, Loco speedbyte/function map broadcast
L, Reserved for LCC interface (implemented in EXRAIL)
m, message to throttles broadcast
M, Write DCC packet
n, Reserved for SensorCam
N, Reserved for Sensorcam
o, Neopixel driver (see also IO_NeoPixel.h)
O, Output broadcast
p, Broadcast power state
P, Write DCC packet
q, Sensor deactivated
Q, Sensor activated
r, Broadcast address read on programming track
R, Read CVs
s, Display status
S, Sensor configuration
t, Cab/loco update command
T, Turnout configuration/control
u, Reserved for user commands
U, Reserved for user commands
v,
V, Verify CVs
w, Write CV on main
W, Write CV
x,
X, Invalid command response
y,
Y, Output broadcast
z, Direct output
Z, Output configuration/control
*/
#include "StringFormatter.h"
#include "DCCEXParser.h"
#include "DCC.h"
#include "DCCWaveform.h"
#include "Turnouts.h"
#include "Outputs.h"
#include "Sensors.h"
#include "GITHUB_SHA.h"
#include "version.h"
#include "defines.h"
#include "CommandDistributor.h"
#include "EEStore.h"
#include "DIAG.h"
#include "TrackManager.h"
#include "DCCTimer.h"
#include "EXRAIL2.h"
#include "Turntables.h"
#include "version.h"
#include "KeywordHasher.h"
#include "CamParser.h"
#ifdef ARDUINO_ARCH_ESP32
#include "WifiESP32.h"
#endif
// This macro can't be created easily as a portable function because the
// flashlist requires a far pointer for high flash access.
#define SENDFLASHLIST(stream,flashList) \
for (int16_t i=0;;i+=sizeof(flashList[0])) { \
int16_t value=GETHIGHFLASHW(flashList,i); \
if (value==INT16_MAX) break; \
StringFormatter::send(stream,F(" %d"),value); \
}
int16_t DCCEXParser::stashP[MAX_COMMAND_PARAMS];
bool DCCEXParser::stashBusy;
Print *DCCEXParser::stashStream = NULL;
RingStream *DCCEXParser::stashRingStream = NULL;
byte DCCEXParser::stashTarget=0;
// This is a JMRI command parser.
// It doesnt know how the string got here, nor how it gets back.
// It knows nothing about hardware or tracks... it just parses strings and
// calls the corresponding DCC api.
// Non-DCC things like turnouts, pins and sensors are handled in additional JMRI interface classes.
int16_t DCCEXParser::splitValues(int16_t result[MAX_COMMAND_PARAMS], byte *cmd, bool usehex)
{
byte state = 1;
byte parameterCount = 0;
int16_t runningValue = 0;
byte *remainingCmd = cmd + 1; // skips the opcode
bool signNegative = false;
// clear all parameters in case not enough found
for (int16_t i = 0; i < MAX_COMMAND_PARAMS; i++)
result[i] = 0;
while (parameterCount < MAX_COMMAND_PARAMS)
{
byte hot = *remainingCmd;
switch (state)
{
case 1: // skipping spaces before a param
if (hot == ' ')
break;
if (hot == '\0')
return -1;
if (hot == '>')
return parameterCount;
state = 2;
continue;
case 2: // checking sign or quoted string
#ifdef HAS_ENOUGH_MEMORY
if (hot == '"') {
// this inserts an extra parameter 0x7777 in front
// of each string parameter as a marker that can
// be checked that a string parameter follows
// This clashes of course with the real value
// 0x7777 which we hope is used seldom
result[parameterCount] = (int16_t)0x7777;
parameterCount++;
result[parameterCount] = (int16_t)(remainingCmd - cmd + 1);
parameterCount++;
state = 4;
break;
}
#endif
signNegative = false;
runningValue = 0;
state = 3;
if (hot != '-')
continue;
signNegative = true;
break;
case 3: // building a parameter
if (hot >= '0' && hot <= '9')
{
runningValue = (usehex?16:10) * runningValue + (hot - '0');
break;
}
if (hot >= 'a' && hot <= 'z') hot=hot-'a'+'A'; // uppercase a..z
if (usehex && hot>='A' && hot<='F') {
// treat A..F as hex not keyword
runningValue = 16 * runningValue + (hot - 'A' + 10);
break;
}
if (hot=='_' || (hot >= 'A' && hot <= 'Z'))
{
// Since JMRI got modified to send keywords in some rare cases, we need this
// Super Kluge to turn keywords into a hash value that can be recognised later
runningValue = ((runningValue << 5) + runningValue) ^ hot;
break;
}
result[parameterCount] = runningValue * (signNegative ? -1 : 1);
parameterCount++;
state = 1;
continue;
#ifdef HAS_ENOUGH_MEMORY
case 4: // skipover text
if (hot == '\0') // We did run to end of buffer without finding the "
return -1;
if (hot == '"') {
*remainingCmd = '\0'; // overwrite " in command buffer with the end-of-string
state = 1;
}
break;
#endif
}
remainingCmd++;
}
return parameterCount;
}
extern __attribute__((weak)) void myFilter(Print * stream, byte & opcode, byte & paramCount, int16_t p[]);
FILTER_CALLBACK DCCEXParser::filterCallback = myFilter;
FILTER_CALLBACK DCCEXParser::filterRMFTCallback = 0;
AT_COMMAND_CALLBACK DCCEXParser::atCommandCallback = 0;
// deprecated
void DCCEXParser::setFilter(FILTER_CALLBACK filter)
{
filterCallback = filter;
}
void DCCEXParser::setRMFTFilter(FILTER_CALLBACK filter)
{
filterRMFTCallback = filter;
}
void DCCEXParser::setAtCommandCallback(AT_COMMAND_CALLBACK callback)
{
atCommandCallback = callback;
}
// Parse an F() string
void DCCEXParser::parse(const FSH * cmd) {
DIAG(F("SETUP(\"%S\")"),cmd);
int size=STRLEN_P((char *)cmd)+1;
char buffer[size];
STRCPY_P(buffer,(char *)cmd);
parse(&USB_SERIAL,(byte *)buffer,NULL);
}
// See documentation on DCC class for info on this section
void DCCEXParser::parse(Print *stream, byte *com, RingStream *ringStream) {
// This function can get stings of the form "<C OMM AND>" or "C OMM AND"
// found is true first after the leading "<" has been passed
bool found = (com[0] != '<');
for (byte *c=com; c[0] != '\0'; c++) {
if (found) {
parseOne(stream, c, ringStream);
found=false;
}
if (c[0] == '<')
found = true;
}
}
void DCCEXParser::parseOne(Print *stream, byte *com, RingStream * ringStream)
{
#ifdef DISABLE_PROG
(void)ringStream;
#endif
#ifndef DISABLE_EEPROM
(void)EEPROM; // tell compiler not to warn this is unused
#endif
byte params = 0;
if (Diag::CMD)
DIAG(F("PARSING:%s"), com);
int16_t p[MAX_COMMAND_PARAMS];
while (com[0] == '<' || com[0] == ' ')
com++; // strip off any number of < or spaces
byte opcode = com[0];
int16_t splitnum = splitValues(p, com, opcode=='M' || opcode=='P');
if (splitnum < 0 || splitnum >= MAX_COMMAND_PARAMS) // if arguments are broken, leave but via printing <X>
goto out;
// Because of check above we are now inside byte size
params = splitnum;
if (filterCallback)
filterCallback(stream, opcode, params, p);
if (filterRMFTCallback && opcode!='\0')
filterRMFTCallback(stream, opcode, params, p);
// Functions return from this switch if complete, break from switch implies error <X> to send
switch (opcode)
{
case '\0':
return; // filterCallback asked us to ignore
case 't': // THROTTLE <t [REGISTER] CAB SPEED DIRECTION>
{
int16_t cab;
int16_t tspeed;
int16_t direction;
if (params==1) { // <t cab> display state
int16_t slot=DCC::lookupSpeedTable(p[0],false);
if (slot>=0)
CommandDistributor::broadcastLoco(slot);
else // send dummy state speed 0 fwd no functions.
StringFormatter::send(stream,F("<l %d -1 128 0>\n"),p[0]);
return;
}
if (params == 4)
{ // <t REGISTER CAB SPEED DIRECTION>
// ignore register p[0]
cab = p[1];
tspeed = p[2];
direction = p[3];
}
else if (params == 3)
{ // <t CAB SPEED DIRECTION>
cab = p[0];
tspeed = p[1];
direction = p[2];
}
else
break;
// Convert DCC-EX protocol speed steps where
// -1=emergency stop, 0-126 as speeds
// to DCC 0=stop, 1= emergency stop, 2-127 speeds
if (tspeed > 126 || tspeed < -1)
break; // invalid JMRI speed code
if (tspeed < 0)
tspeed = 1; // emergency stop DCC speed
else if (tspeed > 0)
tspeed++; // map 1-126 -> 2-127
if (cab == 0 && tspeed > 1)
break; // ignore broadcasts of speed>1
if (direction < 0 || direction > 1)
break; // invalid direction code
if (cab > 10239 || cab < 0)
break; // beyond DCC range
DCC::setThrottle(cab, tspeed, direction);
if (params == 4) // send obsolete format T response
StringFormatter::send(stream, F("<T %d %d %d>\n"), p[0], p[2], p[3]);
// speed change will be broadcast anyway in new <l > format
return;
}
case 'f': // FUNCTION <f CAB BYTE1 [BYTE2]>
if (parsef(stream, params, p))
return;
break;
case 'a': // ACCESSORY <a ADDRESS SUBADDRESS ACTIVATE [ONOFF]> or <a LINEARADDRESS ACTIVATE>
{
int address;
byte subaddress;
byte activep;
byte onoff;
if (params==2) { // <a LINEARADDRESS ACTIVATE>
address=(p[0] - 1) / 4 + 1;
subaddress=(p[0] - 1) % 4;
activep=1;
onoff=2; // send both
}
else if (params==3) { // <a ADDRESS SUBADDRESS ACTIVATE>
address=p[0];
subaddress=p[1];
activep=2;
onoff=2; // send both
}
else if (params==4) { // <a ADDRESS SUBADDRESS ACTIVATE ONOFF>
address=p[0];
subaddress=p[1];
activep=2;
if ((p[3] < 0) || (p[3] > 1)) // invalid onoff 0|1
break;
onoff=p[3];
}
else break; // invalid no of parameters
if (
((address & 0x01FF) != address) // invalid address (limit 9 bits)
|| ((subaddress & 0x03) != subaddress) // invalid subaddress (limit 2 bits)
|| (p[activep] > 1) || (p[activep] < 0) // invalid activate 0|1
) break;
// Honour the configuration option (config.h) which allows the <a> command to be reversed
// Because of earlier confusion we need to do the same thing under both defines
#if defined(DCC_ACCESSORY_COMMAND_REVERSE) || defined(DCC_ACCESSORY_RCN_213)
DCC::setAccessory(address, subaddress,p[activep]==0,onoff);
#else
DCC::setAccessory(address, subaddress,p[activep]==1,onoff);
#endif
}
return;
case 'A': // EXTENDED ACCESSORY <A address value>
// Note: if this happens to match a defined EXRAIL
// DCCX_SIGNAL, then EXRAIL will have intercepted
// this command alrerady.
if (params==2 && DCC::setExtendedAccessory(p[0],p[1])) return;
break;
case 'T': // TURNOUT <T ...>
if (parseT(stream, params, p))
return;
break;
#ifndef IO_NO_HAL
case 'o': // Neopixel pin manipulation
if (p[0]==0) break;
{
VPIN vpin=p[0]>0 ? p[0]:-p[0];
bool setON=p[0]>0;
if (params==1) { // <o [-]vpin>
IODevice::write(vpin,setON);
return;
}
if (params==2) { // <o [-]vpin count>
IODevice::writeRange(vpin,setON,p[1]);
return;
}
if (params==4 || params==5) { // <z [-]vpin r g b [count]>
auto count=p[4]?p[4]:1;
if (p[1]<0 || p[1]>0xFF) break;
if (p[2]<0 || p[2]>0xFF) break;
if (p[3]<0 || p[3]>0xFF) break;
// strange parameter mangling... see IO_NeoPixel.h NeoPixel::_writeAnalogue
int colour_RG=(p[1]<<8) | p[2];
uint16_t colour_B=p[3];
IODevice::writeAnalogueRange(vpin,colour_RG,setON,colour_B,count);
return;
}
}
break;
#endif
case 'z': // direct pin manipulation
if (p[0]==0) break;
if (params==1) { // <z vpin | -vpin>
if (p[0]>0) IODevice::write(p[0],HIGH);
else IODevice::write(-p[0],LOW);
return;
}
if (params>=2 && params<=4) { // <z vpin analog profile duration>
// unused params default to 0
IODevice::writeAnalogue(p[0],p[1],p[2],p[3]);
return;
}
break;
case 'Z': // OUTPUT <Z ...>
if (parseZ(stream, params, p))
return;
break;
case 'S': // SENSOR <S ...>
if (parseS(stream, params, p))
return;
break;
#ifndef DISABLE_PROG
case 'w': // WRITE CV on MAIN <w CAB CV VALUE>
if (params != 3)
break;
DCC::writeCVByteMain(p[0], p[1], p[2]);
return;
case 'b': // WRITE CV BIT ON MAIN <b CAB CV BIT VALUE>
if (params != 4)
break;
DCC::writeCVBitMain(p[0], p[1], p[2], p[3]);
return;
#endif
case 'M': // WRITE TRANSPARENT DCC PACKET MAIN <M REG X1 ... X9>
#ifndef DISABLE_PROG
case 'P': // WRITE TRANSPARENT DCC PACKET PROG <P REG X1 ... X9>
#endif
// NOTE: this command was parsed in HEX instead of decimal
params--; // drop REG
if (params<1) break;
if (params > MAX_PACKET_SIZE) break;
{
byte packet[params];
for (int i=0;i<params;i++) {
packet[i]=(byte)p[i+1];
if (Diag::CMD) DIAG(F("packet[%d]=%d (0x%x)"), i, packet[i], packet[i]);
}
(opcode=='M'?DCCWaveform::mainTrack:DCCWaveform::progTrack).schedulePacket(packet,params,3);
}
return;
#ifndef DISABLE_PROG
case 'W': // WRITE CV ON PROG <W CV VALUE CALLBACKNUM CALLBACKSUB>
if (!stashCallback(stream, p, ringStream))
break;
if (params == 1) // <W id> Write new loco id (clearing consist and managing short/long)
DCC::setLocoId(p[0],callback_Wloco);
else if (params == 4) // WRITE CV ON PROG <W CV VALUE [CALLBACKNUM] [CALLBACKSUB]>
DCC::writeCVByte(p[0], p[1], callback_W4);
else if ((params==2 || params==3 ) && p[0]=="CONSIST"_hk ) {
DCC::setConsistId(p[1],p[2]=="REVERSE"_hk,callback_Wconsist);
}
else if (params == 2) // WRITE CV ON PROG <W CV VALUE>
DCC::writeCVByte(p[0], p[1], callback_W);
else
break;
return;
case 'V': // VERIFY CV ON PROG <V CV VALUE> <V CV BIT 0|1>
if (params == 2)
{ // <V CV VALUE>
if (!stashCallback(stream, p, ringStream))
break;
DCC::verifyCVByte(p[0], p[1], callback_Vbyte);
return;
}
if (params == 3)
{
if (!stashCallback(stream, p, ringStream))
break;
DCC::verifyCVBit(p[0], p[1], p[2], callback_Vbit);
return;
}
break;
case 'B': // WRITE CV BIT ON PROG <B CV BIT VALUE CALLBACKNUM CALLBACKSUB> or <B CV BIT VALUE>
if (params != 3 && params != 5)
break;
if (!stashCallback(stream, p, ringStream))
break;
DCC::writeCVBit(p[0], p[1], p[2], callback_B);
return;
case 'R': // READ CV ON PROG
if (params == 1)
{ // <R CV> -- uses verify callback
if (!stashCallback(stream, p, ringStream))
break;
DCC::verifyCVByte(p[0], 0, callback_Vbyte);
return;
}
if (params == 3)
{ // <R CV CALLBACKNUM CALLBACKSUB>
if (!stashCallback(stream, p, ringStream))
break;
DCC::readCV(p[0], callback_R);
return;
}
if (params == 0)
{ // <R> New read loco id
if (!stashCallback(stream, p, ringStream))
break;
DCC::getLocoId(callback_Rloco);
return;
}
break;
#endif
case '1': // POWERON <1 [MAIN|PROG|JOIN]>
{
if (params > 1) break;
if (params==0) { // All
TrackManager::setTrackPower(TRACK_ALL, POWERMODE::ON);
}
if (params==1) {
if (p[0]=="MAIN"_hk) { // <1 MAIN>
TrackManager::setTrackPower(TRACK_MODE_MAIN, POWERMODE::ON);
}
#ifndef DISABLE_PROG
else if (p[0] == "JOIN"_hk) { // <1 JOIN>
TrackManager::setJoin(true);
TrackManager::setTrackPower(TRACK_MODE_MAIN|TRACK_MODE_PROG, POWERMODE::ON);
}
else if (p[0]=="PROG"_hk) { // <1 PROG>
TrackManager::setJoin(false);
TrackManager::setTrackPower(TRACK_MODE_PROG, POWERMODE::ON);
}
#endif
else if (p[0] >= "A"_hk && p[0] <= "H"_hk) { // <1 A-H>
byte t = (p[0] - 'A');
TrackManager::setTrackPower(POWERMODE::ON, t);
//StringFormatter::send(stream, F("<p1 %c>\n"), t+'A');
}
else break; // will reply <X>
}
//TrackManager::streamTrackState(NULL,t);
return;
}
case '0': // POWEROFF <0 [MAIN | PROG] >
{
if (params > 1) break;
if (params==0) { // All
TrackManager::setJoin(false);
TrackManager::setTrackPower(TRACK_ALL, POWERMODE::OFF);
}
if (params==1) {
if (p[0]=="MAIN"_hk) { // <0 MAIN>
TrackManager::setJoin(false);
TrackManager::setTrackPower(TRACK_MODE_MAIN, POWERMODE::OFF);
}
#ifndef DISABLE_PROG
else if (p[0]=="PROG"_hk) { // <0 PROG>
TrackManager::setJoin(false);
TrackManager::progTrackBoosted=false; // Prog track boost mode will not outlive prog track off
TrackManager::setTrackPower(TRACK_MODE_PROG, POWERMODE::OFF);
}
#endif
else if (p[0] >= "A"_hk && p[0] <= "H"_hk) { // <1 A-H>
byte t = (p[0] - 'A');
TrackManager::setJoin(false);
TrackManager::setTrackPower(POWERMODE::OFF, t);
//StringFormatter::send(stream, F("<p0 %c>\n"), t+'A');
}
else break; // will reply <X>
}
return;
}
case '!': // ESTOP ALL <!>
DCC::setThrottle(0,1,1); // this broadcasts speed 1(estop) and sets all reminders to speed 1.
return;
#ifdef HAS_ENOUGH_MEMORY
case 'c': // SEND METER RESPONSES <c>
// No longer useful because of multiple tracks See <JG> and <JI>
if (params>0) break;
TrackManager::reportObsoleteCurrent(stream);
return;
#endif
case 'Q': // SENSORS <Q>
Sensor::printAll(stream);
return;
case 's': // STATUS <s>
StringFormatter::send(stream, F("<iDCC-EX V-%S / %S / %S G-%S>\n"), F(VERSION), F(ARDUINO_TYPE), DCC::getMotorShieldName(), F(GITHUB_SHA));
CommandDistributor::broadcastPower(); // <s> is the only "get power status" command we have
Turnout::printAll(stream); //send all Turnout states
Sensor::printAll(stream); //send all Sensor states
return;
#ifndef DISABLE_EEPROM
case 'E': // STORE EPROM <E>
EEStore::store();
StringFormatter::send(stream, F("<e %d %d %d>\n"), EEStore::eeStore->data.nTurnouts, EEStore::eeStore->data.nSensors, EEStore::eeStore->data.nOutputs);
return;
case 'e': // CLEAR EPROM <e>
EEStore::clear();
StringFormatter::send(stream, F("<O>\n"));
return;
#endif
case ' ': // < >
StringFormatter::send(stream, F("\n"));
return;
case 'C': // CONFIG <C [params]>
#if defined(ARDUINO_ARCH_ESP32)
// currently this only works on ESP32
#if defined(HAS_ENOUGH_MEMORY)
if (p[0] == "WIFI"_hk) { // <C WIFI SSID PASSWORD>
if (params != 5) // the 5 params 0 to 4 are (kinda): WIFI_hk 0x7777 &SSID 0x7777 &PASSWORD
break;
if (p[1] == 0x7777 && p[3] == 0x7777) {
WifiESP::setup((const char*)(com + p[2]), (const char*)(com + p[4]), WIFI_HOSTNAME, IP_PORT, WIFI_CHANNEL, WIFI_FORCE_AP);
}
return;
}
#endif
#endif //ESP32
if (parseC(stream, params, p))
return;
break;
#ifndef DISABLE_DIAG
case 'D': // DIAG <D [params]>
if (parseD(stream, params, p))
return;
break;
#endif
case '=': // TRACK MANAGER CONTROL <= [params]>
if (TrackManager::parseEqualSign(stream, params, p))
return;
break;
case '#': // NUMBER OF LOCOSLOTS <#>
StringFormatter::send(stream, F("<# %d>\n"), MAX_LOCOS);
return;
case '-': // Forget Loco <- [cab]>
if (params > 1 || p[0]<0) break;
if (p[0]==0) DCC::forgetAllLocos();
else DCC::forgetLoco(p[0]);
return;
case 'F': // New command to call the new Loco Function API <F cab func 1|0>
if(params!=3) break;
if (p[1]=="DCFREQ"_hk) { // <F cab DCFREQ 0..3>
if (p[2]<0 || p[2]>3) break;
DCC::setDCFreq(p[0],p[2]);
return;
}
if (Diag::CMD)
DIAG(F("Setting loco %d F%d %S"), p[0], p[1], p[2] ? F("ON") : F("OFF"));
if (DCC::setFn(p[0], p[1], p[2] == 1)) return;
break;
#if WIFI_ON
case '+': // Complex Wifi interface command (not usual parse)
if (atCommandCallback && !ringStream) {
TrackManager::setPower(POWERMODE::OFF);
atCommandCallback((HardwareSerial *)stream,com);
return;
}
break;
#endif
case 'J' : // throttle info access
{
if ((params<1) | (params>3)) break; // <J>
//if ((params<1) | (params>2)) break; // <J>
int16_t id=(params==2)?p[1]:0;
switch(p[0]) {
case "C"_hk: // <JC mmmm nn> sets time and speed
if (params==1) { // <JC> returns latest time
int16_t x = CommandDistributor::retClockTime();
StringFormatter::send(stream, F("<jC %d>\n"), x);
return;
}
CommandDistributor::setClockTime(p[1], p[2], 1);
return;
case "G"_hk: // <JG> current gauge limits
if (params>1) break;
TrackManager::reportGauges(stream); // <g limit...limit>
return;
case "I"_hk: // <JI> current values
if (params>1) break;
TrackManager::reportCurrent(stream); // <g limit...limit>
return;
case "A"_hk: // <JA> intercepted by EXRAIL// <JA> returns automations/routes
if (params!=1) break; // <JA>
StringFormatter::send(stream, F("<jA>\n"));
return;
case "M"_hk: // <JM> intercepted by EXRAIL
if (params>1) break; // invalid cant do
// <JM> requests stash size so say none.
StringFormatter::send(stream,F("<jM 0>\n"));
return;
case "R"_hk: // <JR> returns rosters
StringFormatter::send(stream, F("<jR"));
#ifdef EXRAIL_ACTIVE
if (params==1) {
SENDFLASHLIST(stream,RMFT2::rosterIdList)
}
else {
auto rosterName= RMFT2::getRosterName(id);
if (!rosterName) rosterName=F("");
auto functionNames= RMFT2::getRosterFunctions(id);
if (!functionNames) functionNames=RMFT2::getRosterFunctions(0);
if (!functionNames) functionNames=F("");
StringFormatter::send(stream,F(" %d \"%S\" \"%S\""),
id, rosterName, functionNames);
}
#endif
StringFormatter::send(stream, F(">\n"));
return;
case "T"_hk: // <JT> returns turnout list
StringFormatter::send(stream, F("<jT"));
if (params==1) { // <JT>
for ( Turnout * t=Turnout::first(); t; t=t->next()) {
if (t->isHidden()) continue;
StringFormatter::send(stream, F(" %d"),t->getId());
}
}
else { // <JT id>
Turnout * t=Turnout::get(id);
if (!t || t->isHidden()) StringFormatter::send(stream, F(" %d X"),id);
else {
const FSH *tdesc = NULL;
#ifdef EXRAIL_ACTIVE
tdesc = RMFT2::getTurnoutDescription(id);
#endif
if (tdesc == NULL)
tdesc = F("");
StringFormatter::send(stream, F(" %d %c \"%S\""),
id,t->isThrown()?'T':'C',
tdesc);
}
}
StringFormatter::send(stream, F(">\n"));
return;
// No turntables without HAL support
#ifndef IO_NO_HAL
case "O"_hk: // <JO returns turntable list
StringFormatter::send(stream, F("<jO"));
if (params==1) { // <JO>
for (Turntable * tto=Turntable::first(); tto; tto=tto->next()) {
if (tto->isHidden()) continue;
StringFormatter::send(stream, F(" %d"),tto->getId());
}
StringFormatter::send(stream, F(">\n"));
} else { // <JO id>
Turntable *tto=Turntable::get(id);
if (!tto || tto->isHidden()) {
StringFormatter::send(stream, F(" %d X>\n"), id);
} else {
uint8_t pos = tto->getPosition();
uint8_t type = tto->isEXTT();
uint8_t posCount = tto->getPositionCount();
const FSH *todesc = NULL;
#ifdef EXRAIL_ACTIVE
todesc = RMFT2::getTurntableDescription(id);
#endif
if (todesc == NULL) todesc = F("");
StringFormatter::send(stream, F(" %d %d %d %d \"%S\">\n"), id, type, pos, posCount, todesc);
}
}
return;
case "P"_hk: // <JP id> returns turntable position list for the turntable id
if (params==2) { // <JP id>
Turntable *tto=Turntable::get(id);
if (!tto || tto->isHidden()) {
StringFormatter::send(stream, F(" %d X>\n"), id);
} else {
uint8_t posCount = tto->getPositionCount();
const FSH *tpdesc = NULL;
for (uint8_t p = 0; p < posCount; p++) {
StringFormatter::send(stream, F("<jP"));
int16_t angle = tto->getPositionAngle(p);
#ifdef EXRAIL_ACTIVE
tpdesc = RMFT2::getTurntablePositionDescription(id, p);
#endif
if (tpdesc == NULL) tpdesc = F("");
StringFormatter::send(stream, F(" %d %d %d \"%S\""), id, p, angle, tpdesc);
StringFormatter::send(stream, F(">\n"));
}
}
} else {
StringFormatter::send(stream, F("<jP X>\n"));
}
return;
#endif
default: break;
} // switch(p[1])
break; // case J
}
// No turntables without HAL support
#ifndef IO_NO_HAL
case 'I': // TURNTABLE <I ...>
if (parseI(stream, params, p))
return;
break;
#endif
#ifndef IO_NO_HAL
case 'N': // <N commands for SensorCam
if (CamParser::parseN(stream,params,p)) return;
break;
#endif
case '/': // implemented in EXRAIL parser
case 'L': // LCC interface implemented in EXRAIL parser
break; // Will <X> if not intercepted by EXRAIL
#ifndef DISABLE_VDPY
case '@': // JMRI saying "give me virtual LCD msgs"
CommandDistributor::setVirtualLCDSerial(stream);
StringFormatter::send(stream,
F("<@ 0 0 \"DCC-EX v" VERSION "\">\n"
"<@ 0 1 \"Lic GPLv3\">\n"));
return;
#endif
default: //anything else will diagnose and drop out to <X>
if (opcode >= ' ' && opcode <= '~') {
DIAG(F("Opcode=%c params=%d"), opcode, params);
for (int i = 0; i < params; i++)
DIAG(F("p[%d]=%d (0x%x)"), i, p[i], p[i]);
} else {
DIAG(F("Unprintable %x"), opcode);
}
break;
} // end of opcode switch
out:// Any fallout here sends an <X>
StringFormatter::send(stream, F("<X>\n"));
}
bool DCCEXParser::parseZ(Print *stream, int16_t params, int16_t p[])
{
switch (params)
{
case 2: // <Z ID ACTIVATE>
{
Output *o = Output::get(p[0]);
if (o == NULL)
return false;
o->activate(p[1]);
StringFormatter::send(stream, F("<Y %d %d>\n"), p[0], p[1]);
}
return true;
case 3: // <Z ID PIN IFLAG>
if (p[0] < 0 || p[2] < 0 || p[2] > 7 )
return false;
if (!Output::create(p[0], p[1], p[2], 1))
return false;
StringFormatter::send(stream, F("<O>\n"));
return true;
case 1: // <Z ID>
if (!Output::remove(p[0]))
return false;
StringFormatter::send(stream, F("<O>\n"));
return true;
case 0: // <Z> list Output definitions
{
bool gotone = false;
for (Output *tt = Output::firstOutput; tt != NULL; tt = tt->nextOutput)
{
gotone = true;
StringFormatter::send(stream, F("<Y %d %d %d %d>\n"), tt->data.id, tt->data.pin, tt->data.flags, tt->data.active);
}
return gotone;
}
default:
return false;
}
}
//===================================
bool DCCEXParser::parsef(Print *stream, int16_t params, int16_t p[])
{
// JMRI sends this info in DCC message format but it's not exactly
// convenient for other processing
if (params == 2) {
byte instructionField = p[1] & 0xE0; // 1110 0000
if (instructionField == 0x80) { // 1000 0000 Function group 1
// Shuffle bits from order F0 F4 F3 F2 F1 to F4 F3 F2 F1 F0
byte normalized = (p[1] << 1 & 0x1e) | (p[1] >> 4 & 0x01);
return (funcmap(p[0], normalized, 0, 4));
} else if (instructionField == 0xA0) { // 1010 0000 Function group 2
if (p[1] & 0x10) // 0001 0000 Bit selects F5toF8 / F9toF12
return (funcmap(p[0], p[1], 5, 8));
else
return (funcmap(p[0], p[1], 9, 12));
}
}
if (params == 3) {
if (p[1] == 222) {
return (funcmap(p[0], p[2], 13, 20));
} else if (p[1] == 223) {
return (funcmap(p[0], p[2], 21, 28));
}
}
(void)stream; // NO RESPONSE
return false;
}
bool DCCEXParser::funcmap(int16_t cab, byte value, byte fstart, byte fstop)
{
for (int16_t i = fstart; i <= fstop; i++) {
if (! DCC::setFn(cab, i, value & 1)) return false;
value >>= 1;
}
return true;
}
//===================================
bool DCCEXParser::parseT(Print *stream, int16_t params, int16_t p[])
{
switch (params)