Merge 2afb5f3d6c into 6d0740eab4

Add-startup-delay

CommandStation-EX.ino

@@ -76,6 +76,12 @@ void setup()
 
   DIAG(F("License GPLv3 fsf.org (c) dcc-ex.com"));
 
+// If user has defined a startup delay, delay here before starting IO
+#if defined(STARTUP_DELAY)
+  DIAG(F("Delaying startup for %dms"), STARTUP_DELAY);
+  delay(STARTUP_DELAY);
+#endif
+
 // Initialise HAL layer before reading EEprom or setting up MotorDrivers 
   IODevice::begin();
 

DCCEX.h

@@ -49,6 +49,7 @@
 #include "CommandDistributor.h"
 #include "TrackManager.h"
 #include "DCCTimer.h"    
+#include "KeywordHasher.h"
 #include "EXRAIL.h"
     
 #endif

DCCEXParser.cpp

@@ -116,6 +116,7 @@ Once a new OPCODE is decided upon, update this list.
 #include "EXRAIL2.h"
 #include "Turntables.h"
 #include "version.h"
+#include "KeywordHasher.h"
 
 // This macro can't be created easily as a portable function because the
 // flashlist requires a far pointer for high flash access. 
@@ -126,57 +127,6 @@ Once a new OPCODE is decided upon, update this list.
         StringFormatter::send(stream,F(" %d"),value);	\
     }                                   
 
-
-// These keywords are used in the <1> command. The number is what you get if you use the keyword as a parameter.
-// To discover new keyword numbers , use the <$ YOURKEYWORD> command
-const int16_t HASH_KEYWORD_MAIN = 11339;
-const int16_t HASH_KEYWORD_CABS = -11981;
-const int16_t HASH_KEYWORD_RAM = 25982;
-const int16_t HASH_KEYWORD_CMD = 9962;
-const int16_t HASH_KEYWORD_ACK = 3113;
-const int16_t HASH_KEYWORD_ON = 2657;
-const int16_t HASH_KEYWORD_DCC = 6436;
-const int16_t HASH_KEYWORD_SLOW = -17209;
-#ifndef DISABLE_PROG
-const int16_t HASH_KEYWORD_JOIN = -30750;
-const int16_t HASH_KEYWORD_PROG = -29718;
-const int16_t HASH_KEYWORD_PROGBOOST = -6353;
-#endif
-#ifndef DISABLE_EEPROM
-const int16_t HASH_KEYWORD_EEPROM = -7168;
-#endif
-const int16_t HASH_KEYWORD_LIMIT = 27413;
-const int16_t HASH_KEYWORD_MAX = 16244;
-const int16_t HASH_KEYWORD_MIN = 15978;
-const int16_t HASH_KEYWORD_RESET = 26133;
-const int16_t HASH_KEYWORD_RETRY = 25704;
-const int16_t HASH_KEYWORD_SPEED28 = -17064;
-const int16_t HASH_KEYWORD_SPEED128 = 25816;
-const int16_t HASH_KEYWORD_SERVO=27709;
-const int16_t HASH_KEYWORD_TT=2688;
-const int16_t HASH_KEYWORD_VPIN=-415;
-const int16_t HASH_KEYWORD_A='A';
-const int16_t HASH_KEYWORD_C='C';
-const int16_t HASH_KEYWORD_G='G';
-const int16_t HASH_KEYWORD_H='H';
-const int16_t HASH_KEYWORD_I='I';
-const int16_t HASH_KEYWORD_M='M';
-const int16_t HASH_KEYWORD_O='O';
-const int16_t HASH_KEYWORD_P='P';
-const int16_t HASH_KEYWORD_R='R';
-const int16_t HASH_KEYWORD_T='T';
-const int16_t HASH_KEYWORD_X='X';
-const int16_t HASH_KEYWORD_LCN = 15137;
-const int16_t HASH_KEYWORD_HAL = 10853;
-const int16_t HASH_KEYWORD_SHOW = -21309;
-const int16_t HASH_KEYWORD_ANIN = -10424;
-const int16_t HASH_KEYWORD_ANOUT = -26399;
-const int16_t HASH_KEYWORD_WIFI = -5583;
-const int16_t HASH_KEYWORD_ETHERNET = -30767;
-const int16_t HASH_KEYWORD_WIT = 31594;
-const int16_t HASH_KEYWORD_EXTT = 8573;
-const int16_t HASH_KEYWORD_ADD = 3201;
-
 int16_t DCCEXParser::stashP[MAX_COMMAND_PARAMS];
 bool DCCEXParser::stashBusy;
 Print *DCCEXParser::stashStream = NULL;
@@ -567,20 +517,20 @@ void DCCEXParser::parseOne(Print *stream, byte *com, RingStream * ringStream)
 	    TrackManager::setTrackPower(TRACK_MODE_ALL, POWERMODE::ON);
 	  }
 	  if (params==1) {
-	    if (p[0]==HASH_KEYWORD_MAIN) { // <1 MAIN>
+	    if (p[0]=="MAIN"_hk) { // <1 MAIN>
 	      TrackManager::setTrackPower(TRACK_MODE_MAIN, POWERMODE::ON);
             }
 #ifndef DISABLE_PROG
-            else if (p[0] == HASH_KEYWORD_JOIN) {  // <1 JOIN>
+            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]==HASH_KEYWORD_PROG) { // <1 PROG>
+            else if (p[0]=="PROG"_hk) { // <1 PROG>
 	      TrackManager::setJoin(false);
 	      TrackManager::setTrackPower(TRACK_MODE_PROG, POWERMODE::ON);
             }
 #endif
-            else if (p[0] >= HASH_KEYWORD_A && p[0] <= HASH_KEYWORD_H) { // <1 A-H>
+            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');
@@ -600,17 +550,17 @@ void DCCEXParser::parseOne(Print *stream, byte *com, RingStream * ringStream)
 	    TrackManager::setTrackPower(TRACK_MODE_ALL, POWERMODE::OFF);
 	  }
 	  if (params==1) {
-	    if (p[0]==HASH_KEYWORD_MAIN) { // <0 MAIN>
+	    if (p[0]=="MAIN"_hk) { // <0 MAIN>
 	      TrackManager::setJoin(false);
 	      TrackManager::setTrackPower(TRACK_MODE_MAIN, POWERMODE::OFF);
 	    }
 #ifndef DISABLE_PROG
-            else if (p[0]==HASH_KEYWORD_PROG) { // <0 PROG>
+            else if (p[0]=="PROG"_hk) { // <0 PROG>
 	      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] >= HASH_KEYWORD_A && p[0] <= HASH_KEYWORD_H) { // <1 A-H>
+	    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);
@@ -704,7 +654,7 @@ void DCCEXParser::parseOne(Print *stream, byte *com, RingStream * ringStream)
             //if ((params<1) | (params>2)) break; // <J>
             int16_t id=(params==2)?p[1]:0;
             switch(p[0]) {
-                case HASH_KEYWORD_C: // <JC mmmm nn> sets time and speed
+                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);
@@ -713,28 +663,28 @@ void DCCEXParser::parseOne(Print *stream, byte *com, RingStream * ringStream)
                     CommandDistributor::setClockTime(p[1], p[2], 1);
                     return;
                 
-                case HASH_KEYWORD_G: // <JG> current gauge limits
+                case "G"_hk: // <JG> current gauge limits
                     if (params>1) break;
                     TrackManager::reportGauges(stream);   // <g limit...limit>     
                     return;
                 
-                case HASH_KEYWORD_I: // <JI> current values
+                case "I"_hk: // <JI> current values
                     if (params>1) break;
                     TrackManager::reportCurrent(stream);   // <g limit...limit>     
                     return;
 
-                case HASH_KEYWORD_A: // <JA> intercepted by EXRAIL// <JA> returns automations/routes
+                case "A"_hk: // <JA> intercepted by EXRAIL// <JA> returns automations/routes
                     if (params!=1) break; // <JA>
                     StringFormatter::send(stream, F("<jA>\n"));
                     return;
  
-                case HASH_KEYWORD_M: // <JM> intercepted by EXRAIL
+                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 HASH_KEYWORD_R: // <JR> returns rosters 
+            case "R"_hk: // <JR> returns rosters 
                 StringFormatter::send(stream, F("<jR"));
 #ifdef EXRAIL_ACTIVE
                 if (params==1) {
@@ -753,7 +703,7 @@ void DCCEXParser::parseOne(Print *stream, byte *com, RingStream * ringStream)
 #endif          
                 StringFormatter::send(stream, F(">\n"));      
                 return; 
-            case HASH_KEYWORD_T: // <JT> returns turnout list 
+            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()) { 
@@ -780,7 +730,7 @@ void DCCEXParser::parseOne(Print *stream, byte *com, RingStream * ringStream)
                 return;
 // No turntables without HAL support
 #ifndef IO_NO_HAL
-            case HASH_KEYWORD_O: // <JO returns turntable list
+            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()) { 
@@ -805,7 +755,7 @@ void DCCEXParser::parseOne(Print *stream, byte *com, RingStream * ringStream)
                     }
                 }
                 return;
-            case HASH_KEYWORD_P: // <JP id> returns turntable position list for the turntable id
+            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()) {
@@ -972,14 +922,14 @@ bool DCCEXParser::parseT(Print *stream, int16_t params, int16_t p[])
           switch (p[1]) {
             // Turnout messages use 1=throw, 0=close.
             case 0:
-            case HASH_KEYWORD_C:
+            case "C"_hk:
               state = true;
               break;
             case 1:
-            case HASH_KEYWORD_T:
+            case "T"_hk:
               state= false;
               break;
-            case HASH_KEYWORD_X:
+            case "X"_hk:
 	    {
               Turnout *tt = Turnout::get(p[0]);
               if (tt) {
@@ -996,14 +946,14 @@ bool DCCEXParser::parseT(Print *stream, int16_t params, int16_t p[])
         }
 
     default: // Anything else is some kind of turnout create function.
-      if (params == 6 && p[1] == HASH_KEYWORD_SERVO) { // <T id SERVO n n n n>
+      if (params == 6 && p[1] == "SERVO"_hk) { // <T id SERVO n n n n>
         if (!ServoTurnout::create(p[0], (VPIN)p[2], (uint16_t)p[3], (uint16_t)p[4], (uint8_t)p[5]))
           return false;
       } else 
-      if (params == 3 && p[1] == HASH_KEYWORD_VPIN) { // <T id VPIN n>
+      if (params == 3 && p[1] == "VPIN"_hk) { // <T id VPIN n>
         if (!VpinTurnout::create(p[0], p[2])) return false;
       } else 
-      if (params >= 3 && p[1] == HASH_KEYWORD_DCC) {
+      if (params >= 3 && p[1] == "DCC"_hk) {
         // <T id DCC addr subadd>   0<=addr<=511, 0<=subadd<=3 (like <a> command).<T>
         if (params==4 && p[2]>=0 && p[2]<512 && p[3]>=0 && p[3]<4) { // <T id DCC n m>
           if (!DCCTurnout::create(p[0], p[2], p[3])) return false;
@@ -1069,41 +1019,41 @@ bool DCCEXParser::parseC(Print *stream, int16_t params, int16_t p[]) {
     switch (p[0])
     {
 #ifndef DISABLE_PROG
-    case HASH_KEYWORD_PROGBOOST:
+    case "PROGBOOST"_hk:
         TrackManager::progTrackBoosted=true;
 	    return true;
 #endif
-    case HASH_KEYWORD_RESET:
+    case "RESET"_hk:
         DCCTimer::reset();
         break; // and <X> if we didnt restart
-    case HASH_KEYWORD_SPEED28:
+    case "SPEED28"_hk:
         DCC::setGlobalSpeedsteps(28);
 	DIAG(F("28 Speedsteps"));
         return true;
 
-    case HASH_KEYWORD_SPEED128:
+    case "SPEED128"_hk:
         DCC::setGlobalSpeedsteps(128);
 	DIAG(F("128 Speedsteps"));
         return true;
 
 #ifndef DISABLE_PROG
-    case HASH_KEYWORD_ACK: // <D ACK ON/OFF> <D ACK [LIMIT|MIN|MAX|RETRY] Value>
+    case "ACK"_hk: // <D ACK ON/OFF> <D ACK [LIMIT|MIN|MAX|RETRY] Value>
 	if (params >= 3) {
-	    if (p[1] == HASH_KEYWORD_LIMIT) {
+	    if (p[1] == "LIMIT"_hk) {
 	      DCCACK::setAckLimit(p[2]);
 	      LCD(1, F("Ack Limit=%dmA"), p[2]);  // <D ACK LIMIT 42>
-	    } else if (p[1] == HASH_KEYWORD_MIN) {
+	    } else if (p[1] == "MIN"_hk) {
 	      DCCACK::setMinAckPulseDuration(p[2]);
 	      LCD(0, F("Ack Min=%uus"), p[2]);  //   <D ACK MIN 1500>
-	    } else if (p[1] == HASH_KEYWORD_MAX) {
+	    } else if (p[1] == "MAX"_hk) {
 	      DCCACK::setMaxAckPulseDuration(p[2]);
 	      LCD(0, F("Ack Max=%uus"), p[2]);  //   <D ACK MAX 9000>
-	    } else if (p[1] == HASH_KEYWORD_RETRY) {
+	    } else if (p[1] == "RETRY"_hk) {
 	      if (p[2] >255) p[2]=3;
 	      LCD(0, F("Ack Retry=%d Sum=%d"), p[2], DCCACK::setAckRetry(p[2]));  //   <D ACK RETRY 2>
 	    }
 	} else {
-      bool onOff = (params > 0) && (p[1] == 1 || p[1] == HASH_KEYWORD_ON); // dont care if other stuff or missing... just means off
+      bool onOff = (params > 0) && (p[1] == 1 || p[1] == "ON"_hk); // dont care if other stuff or missing... just means off
     
 	  DIAG(F("Ack diag %S"), onOff ? F("on") : F("off"));
 	  Diag::ACK = onOff;
@@ -1121,66 +1071,66 @@ bool DCCEXParser::parseD(Print *stream, int16_t params, int16_t 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
+    bool onOff = (params > 0) && (p[1] == 1 || p[1] == "ON"_hk); // dont care if other stuff or missing... just means off
     switch (p[0])
     {
-    case HASH_KEYWORD_CABS: // <D CABS>
+    case "CABS"_hk: // <D CABS>
         DCC::displayCabList(stream);
         return true;
 
-    case HASH_KEYWORD_RAM: // <D RAM>
+    case "RAM"_hk: // <D RAM>
         DIAG(F("Free memory=%d"), DCCTimer::getMinimumFreeMemory());
         return true;
 
-    case HASH_KEYWORD_CMD: // <D CMD ON/OFF>
+    case "CMD"_hk: // <D CMD ON/OFF>
         Diag::CMD = onOff;
         return true;
 
 #ifdef HAS_ENOUGH_MEMORY
-    case HASH_KEYWORD_WIFI: // <D WIFI ON/OFF>
+    case "WIFI"_hk: // <D WIFI ON/OFF>
         Diag::WIFI = onOff;
         return true;
 
-    case HASH_KEYWORD_ETHERNET: // <D ETHERNET ON/OFF>
+    case "ETHERNET"_hk: // <D ETHERNET ON/OFF>
         Diag::ETHERNET = onOff;
         return true;
 
-    case HASH_KEYWORD_WIT: // <D WIT ON/OFF>
+    case "WIT"_hk: // <D WIT ON/OFF>
         Diag::WITHROTTLE = onOff;
         return true;
 
-    case HASH_KEYWORD_LCN: // <D LCN ON/OFF>
+    case "LCN"_hk: // <D LCN ON/OFF>
         Diag::LCN = onOff;
         return true;
 #endif
 #ifndef DISABLE_EEPROM
-    case HASH_KEYWORD_EEPROM: // <D EEPROM NumEntries>
+    case "EEPROM"_hk: // <D EEPROM NumEntries>
 	if (params >= 2)
 	    EEStore::dump(p[1]);
 	return true;
 #endif
-    case HASH_KEYWORD_SERVO:  // <D SERVO vpin position [profile]>
+    case "SERVO"_hk:  // <D SERVO vpin position [profile]>
 
-    case HASH_KEYWORD_ANOUT:  // <D ANOUT vpin position [profile]>
+    case "ANOUT"_hk:  // <D ANOUT vpin position [profile]>
         IODevice::writeAnalogue(p[1], p[2], params>3 ? p[3] : 0);
-        break;
+        return true;
 
-    case HASH_KEYWORD_ANIN:   // <D ANIN vpin>  Display analogue input value
+    case "ANIN"_hk:   // <D ANIN vpin>  Display analogue input value
         DIAG(F("VPIN=%u value=%d"), p[1], IODevice::readAnalogue(p[1]));
-        break;
+        return true;
 
 #if !defined(IO_NO_HAL)
-    case HASH_KEYWORD_HAL: 
+    case "HAL"_hk: 
-        if (p[1] == HASH_KEYWORD_SHOW) 
+        if (p[1] == "SHOW"_hk) 
           IODevice::DumpAll();
-        else if (p[1] == HASH_KEYWORD_RESET)
+        else if (p[1] == "RESET"_hk)
           IODevice::reset();
-        break;
+        return true;
 #endif
 
-    case HASH_KEYWORD_TT:     // <D TT vpin steps activity>
+    case "TT"_hk:     // <D TT vpin steps activity>
         IODevice::writeAnalogue(p[1], p[2], params>3 ? p[3] : 0);
-        break;
+        return true;
 
     default: // invalid/unknown
         return parseC(stream, params, p);
@@ -1232,7 +1182,7 @@ bool DCCEXParser::parseI(Print *stream, int16_t params, int16_t p[])
     case 3: // <I id position activity> | <I id DCC home> - rotate to position for EX-Turntable or create DCC turntable
         {
             Turntable *tto = Turntable::get(p[0]);
-            if (p[1] == HASH_KEYWORD_DCC) {
+            if (p[1] == "DCC"_hk) {
                 if (tto || p[2] < 0 || p[2] > 3600) return false;
                 if (!DCCTurntable::create(p[0])) return false;
                 Turntable *tto = Turntable::get(p[0]);
@@ -1249,7 +1199,7 @@ bool DCCEXParser::parseI(Print *stream, int16_t params, int16_t p[])
     case 4: // <I id EXTT vpin home> create an EXTT turntable
         {
             Turntable *tto = Turntable::get(p[0]);
-            if (p[1] == HASH_KEYWORD_EXTT) {
+            if (p[1] == "EXTT"_hk) {
                 if (tto || p[3] < 0 || p[3] > 3600) return false;
                 if (!EXTTTurntable::create(p[0], (VPIN)p[2])) return false;
                 Turntable *tto = Turntable::get(p[0]);
@@ -1264,7 +1214,7 @@ bool DCCEXParser::parseI(Print *stream, int16_t params, int16_t p[])
     case 5: // <I id ADD position value angle> add a position
         {
             Turntable *tto = Turntable::get(p[0]);
-            if (p[1] == HASH_KEYWORD_ADD) {
+            if (p[1] == "ADD"_hk) {
                 // tto must exist, no more than 48 positions, angle 0 - 3600
                 if (!tto || p[2] > 48 || p[4] < 0 || p[4] > 3600) return false;
                 tto->addPosition(p[2], p[3], p[4]);

DCCRMT.cpp

@@ -1,5 +1,5 @@
 /*
- *  © 2021-2022, Harald Barth.
+ *  © 2021-2024, Harald Barth.
  *  
  *  This file is part of DCC-EX
  *
@@ -25,6 +25,18 @@
 #include "DCCWaveform.h" // for MAX_PACKET_SIZE
 #include "soc/gpio_sig_map.h"
 
+// check for right type of ESP32
+#include "soc/soc_caps.h"
+#ifndef SOC_RMT_MEM_WORDS_PER_CHANNEL
+#error This symobol should be defined
+#endif
+#if SOC_RMT_MEM_WORDS_PER_CHANNEL < 64
+#warning This is not an ESP32-WROOM but some other unsupported variant
+#warning You are outside of the DCC-EX supported hardware
+#endif
+
+static const byte RMT_CHAN_PER_DCC_CHAN = 2;
+
 // Number of bits resulting out of X bytes of DCC payload data
 // Each byte has one bit extra and at the end we have one EOF marker
 #define DATA_LEN(X) ((X)*9+1)
@@ -75,12 +87,30 @@ void IRAM_ATTR interrupt(rmt_channel_t channel, void *t) {
 RMTChannel::RMTChannel(pinpair pins, bool isMain) {
   byte ch;
   byte plen;
+
+  // Below we check if the DCC packet actually fits into the RMT hardware
+  // Currently MAX_PACKET_SIZE = 5 so with checksum there are
+  // MAX_PACKET_SIZE+1 data packets. Each need DATA_LEN (9) bits.
+  // To that we add the preamble length, the fencepost DCC end bit
+  // and the RMT EOF marker.
+  // SOC_RMT_MEM_WORDS_PER_CHANNEL is either 64 (original WROOM) or
+  // 48 (all other ESP32 like the -C3 or -S2
+  // The formula to get the possible MAX_PACKET_SIZE is
+  //
+  // ALLOCATED = RMT_CHAN_PER_DCC_CHAN * SOC_RMT_MEM_WORDS_PER_CHANNEL
+  // MAX_PACKET_SIZE = floor((ALLOCATED - PREAMBLE_LEN - 2)/9 - 1)
+  //
+
   if (isMain) {
     ch = 0;
     plen = PREAMBLE_BITS_MAIN;
+    static_assert (DATA_LEN(MAX_PACKET_SIZE+1) + PREAMBLE_BITS_MAIN + 2 <= RMT_CHAN_PER_DCC_CHAN * SOC_RMT_MEM_WORDS_PER_CHANNEL,
+		  "Number of DCC packet bits greater than ESP32 RMT memory available");
   } else {
-    ch = 2;
+    ch = RMT_CHAN_PER_DCC_CHAN; // number == offset
     plen = PREAMBLE_BITS_PROG;
+    static_assert (DATA_LEN(MAX_PACKET_SIZE+1) + PREAMBLE_BITS_PROG + 2 <= RMT_CHAN_PER_DCC_CHAN * SOC_RMT_MEM_WORDS_PER_CHANNEL,
+		   "Number of DCC packet bits greater than ESP32 RMT memory available");
   }
     
   // preamble
@@ -115,7 +145,7 @@ RMTChannel::RMTChannel(pinpair pins, bool isMain) {
   // data: max packet size today is 5 + checksum
   maxDataLen = DATA_LEN(MAX_PACKET_SIZE+1);  // plus checksum
   data = (rmt_item32_t*)malloc(maxDataLen*sizeof(rmt_item32_t));
-  
+
   rmt_config_t config;
   // Configure the RMT channel for TX
   bzero(&config, sizeof(rmt_config_t));
@@ -123,20 +153,10 @@ RMTChannel::RMTChannel(pinpair pins, bool isMain) {
   config.channel = channel = (rmt_channel_t)ch;
   config.clk_div = RMT_CLOCK_DIVIDER;
   config.gpio_num = (gpio_num_t)pins.pin;
-  config.mem_block_num = 2; // With longest DCC packet 11 inc checksum (future expansion)
+  config.mem_block_num = RMT_CHAN_PER_DCC_CHAN;
-                            // number of bits needed is 22preamble + start +
+  // use config
-                            // 11*9 + extrazero + EOT = 124
-                            // 2 mem block of 64 RMT items should be enough
-
   ESP_ERROR_CHECK(rmt_config(&config));
   addPin(pins.invpin, true);
-  /*
-  // test: config another gpio pin
-  gpio_num_t gpioNum = (gpio_num_t)(pin-1);
-  PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[gpioNum], PIN_FUNC_GPIO);
-  gpio_set_direction(gpioNum, GPIO_MODE_OUTPUT);
-  gpio_matrix_out(gpioNum, RMT_SIG_OUT0_IDX, 0, 0);
-  */
   
   // NOTE: ESP_INTR_FLAG_IRAM is *NOT* included in this bitmask
   ESP_ERROR_CHECK(rmt_driver_install(config.channel, 0, ESP_INTR_FLAG_LOWMED|ESP_INTR_FLAG_SHARED));

DCCWaveform.h

@@ -2,7 +2,7 @@
  *  © 2021 M Steve Todd
  *  © 2021 Mike S
  *  © 2021 Fred Decker
- *  © 2020-2021 Harald Barth
+ *  © 2020-2024 Harald Barth
  *  © 2020-2021 Chris Harlow
  *  All rights reserved.
  *  
@@ -33,9 +33,9 @@
 
 
 // Number of preamble bits.
-const int   PREAMBLE_BITS_MAIN = 16;
+const byte PREAMBLE_BITS_MAIN = 16;
-const int   PREAMBLE_BITS_PROG = 22;
+const byte PREAMBLE_BITS_PROG = 22;
-const byte   MAX_PACKET_SIZE = 5;  // NMRA standard extended packets, payload size WITHOUT checksum.
+const byte MAX_PACKET_SIZE = 5;     // NMRA standard extended packets, payload size WITHOUT checksum.
 
 
 // The WAVE_STATE enum is deliberately numbered because a change of order would be catastrophic

EXRAIL2.cpp

@@ -333,13 +333,15 @@ if (compileFeatures & FEATURE_SIGNAL) {
 }
 
 void RMFT2::setTurnoutHiddenState(Turnout * t) {
-  // turnout descriptions are in low flash F strings 
+  // turnout descriptions are in low flash F strings
-  t->setHidden(GETFLASH(getTurnoutDescription(t->getId()))==0x01);     
+  const FSH *desc = getTurnoutDescription(t->getId());
+  if (desc) t->setHidden(GETFLASH(desc)==0x01);
 }
 
 #ifndef IO_NO_HAL
 void RMFT2::setTurntableHiddenState(Turntable * tto) {
-  tto->setHidden(GETFLASH(getTurntableDescription(tto->getId()))==0x01);
+  const FSH *desc = getTurntableDescription(tto->getId());
+  if (desc) tto->setHidden(GETFLASH(desc)==0x01);
 }
 #endif
 

EXRAIL2MacroReset.h

@@ -67,6 +67,7 @@
 #undef FWD 
 #undef GREEN
 #undef HAL
+#undef HAL_IGNORE_DEFAULTS
 #undef IF 
 #undef IFAMBER
 #undef IFCLOSED
@@ -218,6 +219,7 @@
 #define FWD(speed) 
 #define GREEN(signal_id)
 #define HAL(haltype,params...)
+#define HAL_IGNORE_DEFAULTS
 #define IF(sensor_id) 
 #define IFAMBER(signal_id)
 #define IFCLOSED(turnout_id) 

EXRAIL2Parser.cpp

@@ -28,25 +28,7 @@
 #include "defines.h"
 #include "EXRAIL2.h"
 #include "DCC.h"
-// Command parsing keywords
+#include "KeywordHasher.h"
-const int16_t HASH_KEYWORD_EXRAIL=15435;    
-const int16_t HASH_KEYWORD_ON = 2657;
-const int16_t HASH_KEYWORD_START=23232;
-const int16_t HASH_KEYWORD_RESERVE=11392;
-const int16_t HASH_KEYWORD_FREE=-23052;
-const int16_t HASH_KEYWORD_LATCH=1618;  
-const int16_t HASH_KEYWORD_UNLATCH=1353;
-const int16_t HASH_KEYWORD_PAUSE=-4142;
-const int16_t HASH_KEYWORD_RESUME=27609;
-const int16_t HASH_KEYWORD_KILL=5218;
-const int16_t HASH_KEYWORD_ALL=3457;
-const int16_t HASH_KEYWORD_ROUTES=-3702;
-const int16_t HASH_KEYWORD_RED=26099;
-const int16_t HASH_KEYWORD_AMBER=18713;
-const int16_t HASH_KEYWORD_GREEN=-31493;
-const int16_t HASH_KEYWORD_A='A';   
-const int16_t HASH_KEYWORD_M='M';
-
 
 // This filter intercepts <> commands to do the following:
 // - Implement RMFT specific commands/diagnostics
@@ -58,8 +40,8 @@ void RMFT2::ComandFilter(Print * stream, byte & opcode, byte & paramCount, int16
   switch(opcode) {
     
   case 'D':
-    if (p[0]==HASH_KEYWORD_EXRAIL) { // <D EXRAIL ON/OFF>
+    if (p[0]=="EXRAIL"_hk) { // <D EXRAIL ON/OFF>
-      diag = paramCount==2 && (p[1]==HASH_KEYWORD_ON || p[1]==1);
+      diag = paramCount==2 && (p[1]=="ON"_hk || p[1]==1);
       opcode=0;
     }
     break;
@@ -125,7 +107,7 @@ void RMFT2::ComandFilter(Print * stream, byte & opcode, byte & paramCount, int16
     case 'J':  // throttle info commands
         if (paramCount<1) return; 
         switch(p[0]) {
-          case HASH_KEYWORD_A: // <JA> returns automations/routes
+          case "A"_hk: // <JA> returns automations/routes
             if (paramCount==1) {// <JA>
               StringFormatter::send(stream, F("<jA"));
               routeLookup->stream(stream);
@@ -134,7 +116,7 @@ void RMFT2::ComandFilter(Print * stream, byte & opcode, byte & paramCount, int16
               return; 
             }
             if (paramCount==2) {  // <JA id>
-              uint16_t id=p[1]; 
+              int16_t id=p[1];
               StringFormatter::send(stream,F("<jA %d %c \"%S\">\n"), 
                 id, getRouteType(id), getRouteDescription(id));
               
@@ -152,7 +134,7 @@ void RMFT2::ComandFilter(Print * stream, byte & opcode, byte & paramCount, int16
               return;
             }
             break;
-        case HASH_KEYWORD_M:
+        case "M"_hk:
             // NOTE: we only need to handle valid calls here because 
             // DCCEXParser has to have code to handle the <J<> cases where
             // exrail isnt involved anyway. 
@@ -236,13 +218,13 @@ bool RMFT2::parseSlash(Print * stream, byte & paramCount, int16_t p[]) {
     return true;
   }
   switch (p[0]) {
-  case HASH_KEYWORD_PAUSE: // </ PAUSE>
+  case "PAUSE"_hk: // </ PAUSE>
     if (paramCount!=1) return false;
     DCC::setThrottle(0,1,true);  // pause all locos on the track
     pausingTask=(RMFT2 *)1; // Impossible task address
     return true;
     
-  case HASH_KEYWORD_RESUME: // </ RESUME>
+  case "RESUME"_hk: // </ RESUME>
     if (paramCount!=1) return false;
     pausingTask=NULL;
     {
@@ -256,7 +238,7 @@ bool RMFT2::parseSlash(Print * stream, byte & paramCount, int16_t p[]) {
     return true;
     
     
-  case HASH_KEYWORD_START: // </ START [cab] route >
+  case "START"_hk: // </ START [cab] route >
     if (paramCount<2 || paramCount>3) return false;
     {
       int route=(paramCount==2) ? p[1] : p[2];
@@ -273,7 +255,7 @@ bool RMFT2::parseSlash(Print * stream, byte & paramCount, int16_t p[]) {
   }
 
   // check KILL ALL here, otherwise the next validation confuses ALL with a flag  
-  if (p[0]==HASH_KEYWORD_KILL && p[1]==HASH_KEYWORD_ALL) {
+  if (p[0]=="KILL"_hk && p[1]=="ALL"_hk) {
     while (loopTask) loopTask->kill(F("KILL ALL")); // destructor changes loopTask
     return true;   
   }
@@ -282,7 +264,7 @@ bool RMFT2::parseSlash(Print * stream, byte & paramCount, int16_t p[]) {
   if (paramCount!=2 ) return false;
   
   switch (p[0]) {
-  case HASH_KEYWORD_KILL: // Kill taskid|ALL
+  case "KILL"_hk: // Kill taskid|ALL
     {
     if ( p[1]<0  || p[1]>=MAX_FLAGS) return false;
     RMFT2 * task=loopTask;
@@ -297,27 +279,27 @@ bool RMFT2::parseSlash(Print * stream, byte & paramCount, int16_t p[]) {
     }
     return false;
     
-  case HASH_KEYWORD_RESERVE:  // force reserve a section
+  case "RESERVE"_hk:  // force reserve a section
     return setFlag(p[1],SECTION_FLAG);
     
-  case HASH_KEYWORD_FREE:  // force free a section
+  case "FREE"_hk:  // force free a section
     return setFlag(p[1],0,SECTION_FLAG);
     
-  case HASH_KEYWORD_LATCH:
+  case "LATCH"_hk:
     return setFlag(p[1], LATCH_FLAG);
     
-  case HASH_KEYWORD_UNLATCH:
+  case "UNLATCH"_hk:
     return setFlag(p[1], 0, LATCH_FLAG);
  
-  case HASH_KEYWORD_RED:
+  case "RED"_hk:
     doSignal(p[1],SIGNAL_RED);
     return true;
  
-  case HASH_KEYWORD_AMBER:
+  case "AMBER"_hk:
     doSignal(p[1],SIGNAL_AMBER);
     return true;
  
-  case HASH_KEYWORD_GREEN:
+  case "GREEN"_hk:
     doSignal(p[1],SIGNAL_GREEN);
     return true;
     

EXRAILMacros.h

@@ -74,13 +74,81 @@
 #define ALIAS(name,value...) const int name= 1##value##0 ==10 ? -__COUNTER__  : value##0/10; 
 #include "myAutomation.h"
 
+// Pass 1d Detect sequence duplicates.
+// This pass generates no runtime data or code 
+#include "EXRAIL2MacroReset.h"
+#undef AUTOMATION
+#define AUTOMATION(id, description) id,
+#undef ROUTE
+#define ROUTE(id, description) id,
+#undef SEQUENCE
+#define SEQUENCE(id) id,
+constexpr int16_t compileTimeSequenceList[]={
+   #include "myAutomation.h"
+   0
+   };
+constexpr int16_t stuffSize=sizeof(compileTimeSequenceList)/sizeof(int16_t) - 1;
+
+
+// Compile time function to check for sequence nos.
+constexpr bool hasseq(const int16_t value, const uint16_t pos=0 ) {
+    return pos>=stuffSize? false :
+          compileTimeSequenceList[pos]==value 
+       || hasseq(value,pos+1); 
+}
+
+// Compile time function to check for duplicate sequence nos.
+constexpr bool hasdup(const int16_t value, const uint16_t pos ) {
+    return pos>=stuffSize? false :
+          compileTimeSequenceList[pos]==value 
+       || hasseq(value,pos+1) 
+       || hasdup(compileTimeSequenceList[pos],pos+1);
+}
+
+
+static_assert(!hasdup(compileTimeSequenceList[0],1),"Duplicate SEQUENCE/ROUTE/AUTOMATION detected");
+
+//pass 1s static asserts to
+//  - check call and follows etc for existing sequence numbers
+//  - check range on LATCH/UNLATCH
+// This pass generates no runtime data or code 
+#include "EXRAIL2MacroReset.h"
+#undef CALL
+#define CALL(id) static_assert(hasseq(id),"Sequence not found");
+#undef FOLLOW
+#define FOLLOW(id)  static_assert(hasseq(id),"Sequence not found");
+#undef START
+#define START(id)  static_assert(hasseq(id),"Sequence not found");
+#undef SENDLOCO
+#define SENDLOCO(cab,id) static_assert(hasseq(id),"Sequence not found");
+#undef LATCH
+#define LATCH(id) static_assert(id>=0 && id<MAX_FLAGS,"Id out of valid range 0-255" );
+#undef UNLATCH
+#define UNLATCH(id) static_assert(id>=0 && id<MAX_FLAGS,"Id out of valid range 0-255" );
+#undef RESERVE
+#define RESERVE(id) static_assert(id>=0 && id<MAX_FLAGS,"Id out of valid range 0-255" );
+#undef FREE
+#define FREE(id) static_assert(id>=0 && id<MAX_FLAGS,"Id out of valid range 0-255" );
+#undef SPEED
+#define SPEED(speed) static_assert(speed>=0 && speed<128,"Speed out of valid range 0-127");
+#undef FWD
+#define FWD(speed) static_assert(speed>=0 && speed<128,"Speed out of valid range 0-127");
+#undef REV
+#define REV(speed) static_assert(speed>=0 && speed<128,"Speed out of valid range 0-127");
+
+#include "myAutomation.h"
+
 // Pass 1h Implements HAL macro by creating exrailHalSetup function
 // Also allows creating EXTurntable object
 #include "EXRAIL2MacroReset.h"
 #undef HAL
 #define HAL(haltype,params...)  haltype::create(params);
-void exrailHalSetup() {
+#undef HAL_IGNORE_DEFAULTS
+#define HAL_IGNORE_DEFAULTS ignore_defaults=true;
+bool exrailHalSetup() {
+   bool ignore_defaults=false;
    #include "myAutomation.h"
+   return ignore_defaults;
 }
 
 // Pass 1c detect compile time featurtes
@@ -396,6 +464,7 @@ int RMFT2::onLCCLookup[RMFT2::countLCCLookup];
 #define FWD(speed) OPCODE_FWD,V(speed),
 #define GREEN(signal_id) OPCODE_GREEN,V(signal_id),
 #define HAL(haltype,params...)
+#define HAL_IGNORE_DEFAULTS
 #define IF(sensor_id) OPCODE_IF,V(sensor_id),
 #define IFAMBER(signal_id) OPCODE_IFAMBER,V(signal_id),
 #define IFCLOSED(turnout_id) OPCODE_IFCLOSED,V(turnout_id),

EthernetInterface.cpp

@@ -47,6 +47,10 @@ void EthernetInterface::setup()
 };
 
 
+#ifdef IP_ADDRESS
+static IPAddress myIP(IP_ADDRESS);
+#endif
+
 /**
  * @brief Aquire IP Address from DHCP and start server
  * 
@@ -59,15 +63,15 @@ EthernetInterface::EthernetInterface()
     DCCTimer::getSimulatedMacAddress(mac);
     connected=false;
    
-    #ifdef IP_ADDRESS
+#ifdef IP_ADDRESS
-    Ethernet.begin(mac, IP_ADDRESS);
+    Ethernet.begin(mac, myIP);
-    #else
+#else
     if (Ethernet.begin(mac) == 0)
     {
         DIAG(F("Ethernet.begin FAILED"));
         return;
     } 
-    #endif
+#endif
     if (Ethernet.hardwareStatus() == EthernetNoHardware) {
       DIAG(F("Ethernet shield not found or W5100"));
     }
@@ -136,7 +140,7 @@ bool EthernetInterface::checkLink() {
       DIAG(F("Ethernet cable connected"));
       connected=true;
       #ifdef IP_ADDRESS
-      Ethernet.setLocalIP(IP_ADDRESS);      // for static IP, set it again
+      Ethernet.setLocalIP(myIP);      // for static IP, set it again
       #endif
       IPAddress ip = Ethernet.localIP();    // look what IP was obtained (dynamic or static)
       server = new EthernetServer(IP_PORT); // Ethernet Server listening on default port IP_PORT

GITHUB_SHA.h

@@ -1 +1 @@
-#define GITHUB_SHA "devel-202401030135Z"
+#define GITHUB_SHA "devel-202401212011Z"

I2CManager_STM32.h

@@ -110,7 +110,6 @@ void I2CManagerClass::I2C_setClock(uint32_t i2cClockSpeed) {
   // Calculate a rise time appropriate to the requested bus speed
   // Use 10x the rise time spec to enable integer divide of 50ns clock period
   uint16_t t_rise;
-  uint32_t ccr_freq;
 
   while (s->CR1 & I2C_CR1_STOP);  // Prevents lockup by guarding further
                                   // writes to CR1 while STOP is being executed!

IODevice.cpp

@@ -33,7 +33,7 @@
 
 // Link to halSetup function.  If not defined, the function reference will be NULL.
 extern __attribute__((weak)) void halSetup();
-extern __attribute__((weak)) void exrailHalSetup();
+extern __attribute__((weak)) bool exrailHalSetup();
 
 //==================================================================================================================
 // Static methods
@@ -60,34 +60,31 @@ void IODevice::begin() {
     halSetup();
 
   // include any HAL devices defined in exrail. 
+  bool ignoreDefaults=false;
   if (exrailHalSetup)
-    exrailHalSetup();
+    ignoreDefaults=exrailHalSetup();
-
+  if (ignoreDefaults) return;
+  
   // Predefine two PCA9685 modules 0x40-0x41 if no conflicts
   // Allocates 32 pins 100-131
-  if (checkNoOverlap(100, 16, 0x40)) {
+  const bool silent=true; // no message if these conflict
+  if (checkNoOverlap(100, 16, 0x40, silent)) {
     PCA9685::create(100, 16, 0x40);
-  } else {
+  } 
-    DIAG(F("Default PCA9685 at I2C 0x40 disabled due to configured user device"));
+
-  }
+  if (checkNoOverlap(116, 16, 0x41, silent)) {
-  if (checkNoOverlap(116, 16, 0x41)) {
     PCA9685::create(116, 16, 0x41);
-  } else {
+  } 
-    DIAG(F("Default PCA9685 at I2C 0x41 disabled due to configured user device"));
-  }
   
   // Predefine two MCP23017 module 0x20/0x21 if no conflicts
   // Allocates 32 pins 164-195
-  if (checkNoOverlap(164, 16, 0x20)) {
+  if (checkNoOverlap(164, 16, 0x20, silent)) {
     MCP23017::create(164, 16, 0x20);
-  } else {
+  } 
-    DIAG(F("Default MCP23017 at I2C 0x20 disabled due to configured user device"));
+
-  }
+  if (checkNoOverlap(180, 16, 0x21, silent)) {
-  if (checkNoOverlap(180, 16, 0x21)) {
     MCP23017::create(180, 16, 0x21);
-  } else {
+  } 
-    DIAG(F("Default MCP23017 at I2C 0x21 disabled due to configured user device"));
-  }
 }
 
 // reset() function to reinitialise all devices
@@ -339,7 +336,10 @@ IODevice *IODevice::findDeviceFollowing(VPIN vpin) {
 // returns true if pins DONT overlap with existing device
 // TODO: Move the I2C address reservation and checks into the I2CManager code.
 // That will enable non-HAL devices to reserve I2C addresses too.
-bool IODevice::checkNoOverlap(VPIN firstPin, uint8_t nPins, I2CAddress i2cAddress) {
+// Silent is used by the default setup so that there is no message if the default 
+// device has already been handled by the user setup.
+bool IODevice::checkNoOverlap(VPIN firstPin, uint8_t nPins, 
+      I2CAddress i2cAddress, bool silent) {
 #ifdef DIAG_IO
   DIAG(F("Check no overlap %u %u %s"), firstPin,nPins,i2cAddress.toString());
 #endif
@@ -352,14 +352,14 @@ bool IODevice::checkNoOverlap(VPIN firstPin, uint8_t nPins, I2CAddress i2cAddres
       VPIN lastDevPin=firstDevPin+dev->_nPins-1;
       bool noOverlap= firstPin>lastDevPin || lastPin<firstDevPin;
       if (!noOverlap) {
-          DIAG(F("WARNING HAL Overlap, redefinition of Vpins %u to %u ignored."),
+          if (!silent) DIAG(F("WARNING HAL Overlap, redefinition of Vpins %u to %u ignored."),
               firstPin, lastPin);
           return false;
       } 
     }
     // Check for overlapping I2C address
     if (i2cAddress && dev->_I2CAddress==i2cAddress) {
-      DIAG(F("WARNING HAL Overlap. i2c Addr %s ignored."),i2cAddress.toString());
+      if (!silent) DIAG(F("WARNING HAL Overlap. i2c Addr %s ignored."),i2cAddress.toString());
       return false;
     } 
   }

IODevice.h

@@ -166,7 +166,8 @@ public:
   void setGPIOInterruptPin(int16_t pinNumber);
 
   // Method to check if pins will overlap before creating new device. 
-  static bool checkNoOverlap(VPIN firstPin, uint8_t nPins=1, I2CAddress i2cAddress=0);
+  static bool checkNoOverlap(VPIN firstPin, uint8_t nPins=1, 
+                  I2CAddress i2cAddress=0, bool silent=false);
 
   // Method used by IODevice filters to locate slave pins that may be overlayed by their own
   // pin range.  

IO_EXIOExpander.h

@@ -1,5 +1,6 @@
 /*
  *  © 2022, Peter Cole. All rights reserved.
+ *  © 2024, Harald Barth. All rights reserved.
  *
  *  This file is part of EX-CommandStation
  *
@@ -100,8 +101,14 @@ private:
             if (_digitalPinBytes < digitalBytesNeeded) {
               // Not enough space, free any existing buffer and allocate a new one
               if (_digitalPinBytes > 0) free(_digitalInputStates);
-              _digitalInputStates = (byte*) calloc(_digitalPinBytes, 1);
+              if ((_digitalInputStates = (byte*) calloc(digitalBytesNeeded, 1)) != NULL) {
-              _digitalPinBytes = digitalBytesNeeded;
+                _digitalPinBytes = digitalBytesNeeded;
+              } else {
+                DIAG(F("EX-IOExpander I2C:%s ERROR alloc %d bytes"), _I2CAddress.toString(), digitalBytesNeeded);
+                _deviceState = DEVSTATE_FAILED;
+                _digitalPinBytes = 0;
+                return;
+              }
             }
           }
           
@@ -117,7 +124,16 @@ private:
               _analogueInputStates = (uint8_t*) calloc(analogueBytesNeeded, 1);
               _analogueInputBuffer = (uint8_t*) calloc(analogueBytesNeeded, 1);
               _analoguePinMap = (uint8_t*) calloc(_numAnaloguePins, 1);
-              _analoguePinBytes = analogueBytesNeeded;
+	      if (_analogueInputStates  != NULL &&
+		  _analogueInputBuffer != NULL &&
+		  _analoguePinMap != NULL) {
+		_analoguePinBytes = analogueBytesNeeded;
+	      } else {
+		DIAG(F("EX-IOExpander I2C:%s ERROR alloc analog pin bytes"), _I2CAddress.toString());
+		_deviceState = DEVSTATE_FAILED;
+		_analoguePinBytes = 0;
+		return;
+	      }
             }
           }
         } else {
@@ -241,7 +257,7 @@ private:
 
     // If we're not doing anything now, check to see if a new input transfer is due.
     if (_readState == RDS_IDLE) {
-      if (currentMicros - _lastDigitalRead > _digitalRefresh && _numDigitalPins>0) { // Delay for digital read refresh
+      if (_numDigitalPins>0 && currentMicros - _lastDigitalRead > _digitalRefresh) { // Delay for digital read refresh
         // Issue new read request for digital states.  As the request is non-blocking, the buffer has to
         // be allocated from heap (object state).
         _readCommandBuffer[0] = EXIORDD;
@@ -249,7 +265,7 @@ private:
                                                                 // non-blocking read
         _lastDigitalRead = currentMicros;
         _readState = RDS_DIGITAL;
-      } else if (currentMicros - _lastAnalogueRead > _analogueRefresh && _numAnaloguePins>0) { // Delay for analogue read refresh
+      } else if (_numAnaloguePins>0 && currentMicros - _lastAnalogueRead > _analogueRefresh) { // Delay for analogue read refresh
         // Issue new read for analogue input states
         _readCommandBuffer[0] = EXIORDAN;
         I2CManager.read(_I2CAddress, _analogueInputBuffer,
@@ -364,14 +380,14 @@ private:
   uint8_t _minorVer = 0;
   uint8_t _patchVer = 0;
 
-  uint8_t* _digitalInputStates;
+  uint8_t* _digitalInputStates  = NULL;
-  uint8_t* _analogueInputStates;
+  uint8_t* _analogueInputStates = NULL;
-  uint8_t* _analogueInputBuffer;  // buffer for I2C input transfers
+  uint8_t* _analogueInputBuffer = NULL;  // buffer for I2C input transfers
   uint8_t _readCommandBuffer[1];
 
-  uint8_t _digitalPinBytes = 0;  // Size of allocated memory buffer (may be longer than needed)
+  uint8_t _digitalPinBytes = 0;   // Size of allocated memory buffer (may be longer than needed)
-  uint8_t _analoguePinBytes = 0;  // Size of allocated memory buffers (may be longer than needed)
+  uint8_t _analoguePinBytes = 0;  // Size of allocated memory buffer (may be longer than needed)
-  uint8_t* _analoguePinMap;
+  uint8_t* _analoguePinMap = NULL;
   I2CRB _i2crb;
 
   enum {RDS_IDLE, RDS_DIGITAL, RDS_ANALOGUE};  // Read operation states

KeywordHasher.h

@@ -0,0 +1,57 @@
+/*
+ *  © 2024 Vincent Hamp and Chris Harlow
+ *  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/>.
+ */
+
+
+/* Reader be aware: 
+ This function implements the _hk data type so that a string keyword
+ is hashed to the same value as the DCCEXParser uses to hash incoming 
+ keywords. 
+ Thus  "MAIN"_hk  generates exactly the same run time vakue 
+ as   const int16_t HASH_KEYWORD_MAIN=11339  
+*/
+#ifndef KeywordHAsher_h
+#define KeywordHasher_h
+
+#include <Arduino.h>
+constexpr uint16_t CompiletimeKeywordHasher(const char *  sv, uint16_t running=0) {
+    return (*sv==0) ? running : CompiletimeKeywordHasher(sv+1,
+          (*sv >= '0' && *sv <= '9') 
+            ? (10*running+*sv-'0')  // Numeric hash  
+            : ((running << 5) + running) ^ *sv
+            );  // 
+}
+
+constexpr int16_t operator""_hk(const char * keyword, size_t len) 
+{
+    return (int16_t) CompiletimeKeywordHasher(keyword,len*0);
+}
+
+/* Some historical values for testing:
+const int16_t HASH_KEYWORD_MAIN = 11339;
+const int16_t HASH_KEYWORD_SLOW = -17209;
+const int16_t HASH_KEYWORD_SPEED28 = -17064;
+const int16_t HASH_KEYWORD_SPEED128 = 25816;
+*/
+
+static_assert("MAIN"_hk == 11339,"Keyword hasher error");
+static_assert("SLOW"_hk == -17209,"Keyword hasher error");
+static_assert("SPEED28"_hk == -17064,"Keyword hasher error");
+static_assert("SPEED128"_hk == 25816,"Keyword hasher error");
+#endif

TrackManager.cpp

@@ -28,6 +28,7 @@
 #include "DIAG.h"
 #include "CommandDistributor.h"
 #include "DCCEXParser.h"
+#include "KeywordHasher.h"
 // Virtualised Motor shield multi-track hardware Interface
 #define FOR_EACH_TRACK(t) for (byte t=0;t<=lastTrack;t++)
     
@@ -35,21 +36,6 @@
         FOR_EACH_TRACK(t) \
 	    if (track[t]->getMode()==findmode)	\
                 track[t]->function;
-#ifndef DISABLE_PROG
-const int16_t HASH_KEYWORD_PROG = -29718;
-#endif
-const int16_t HASH_KEYWORD_MAIN = 11339;
-const int16_t HASH_KEYWORD_OFF = 22479;  
-const int16_t HASH_KEYWORD_NONE = -26550;
-const int16_t HASH_KEYWORD_DC = 2183;  
-const int16_t HASH_KEYWORD_DCX = 6463; // DC reversed polarity 
-const int16_t HASH_KEYWORD_EXT = 8201; // External DCC signal
-const int16_t HASH_KEYWORD_A = 65; // parser makes single chars the ascii.   
-const int16_t HASH_KEYWORD_AUTO = -5457;
-#ifdef BOOSTER_INPUT
-const int16_t HASH_KEYWORD_BOOST = 11269;
-#endif
-const int16_t HASH_KEYWORD_INV = 11857;
 
 MotorDriver * TrackManager::track[MAX_TRACKS];
 int16_t TrackManager::trackDCAddr[MAX_TRACKS];
@@ -362,38 +348,38 @@ bool TrackManager::parseEqualSign(Print *stream, int16_t params, int16_t p[])
         
     }
     
-    p[0]-=HASH_KEYWORD_A;  // convert A... to 0.... 
+    p[0]-="A"_hk;  // convert A... to 0.... 
 
     if (params>1 && (p[0]<0 || p[0]>=MAX_TRACKS)) 
         return false;
     
-    if (params==2  && p[1]==HASH_KEYWORD_MAIN) // <= id MAIN>
+    if (params==2  && p[1]=="MAIN"_hk) // <= id MAIN>
         return setTrackMode(p[0],TRACK_MODE_MAIN);
     
 #ifndef DISABLE_PROG
-    if (params==2  && p[1]==HASH_KEYWORD_PROG) // <= id PROG>
+    if (params==2  && p[1]=="PROG"_hk) // <= id PROG>
         return setTrackMode(p[0],TRACK_MODE_PROG);
 #endif
     
-    if (params==2  && (p[1]==HASH_KEYWORD_OFF || p[1]==HASH_KEYWORD_NONE)) // <= id OFF> <= id NONE>
+    if (params==2  && (p[1]=="OFF"_hk || p[1]=="NONE"_hk)) // <= id OFF> <= id NONE>
         return setTrackMode(p[0],TRACK_MODE_NONE);
 
-    if (params==2  && p[1]==HASH_KEYWORD_EXT) // <= id EXT>
+    if (params==2  && p[1]=="EXT"_hk) // <= id EXT>
         return setTrackMode(p[0],TRACK_MODE_EXT);
 #ifdef BOOSTER_INPUT
-    if (params==2  && p[1]==HASH_KEYWORD_BOOST) // <= id BOOST>
+    if (params==2  && p[1]=="BOOST"_hk) // <= id BOOST>
         return setTrackMode(p[0],TRACK_MODE_BOOST);
 #endif
-    if (params==2  && p[1]==HASH_KEYWORD_AUTO) // <= id AUTO>
+    if (params==2  && p[1]=="AUTO"_hk) // <= id AUTO>
       return setTrackMode(p[0], track[p[0]]->getMode() | TRACK_MODE_AUTOINV);
 
-    if (params==2  && p[1]==HASH_KEYWORD_INV) // <= id AUTO>
+    if (params==2  && p[1]=="INV"_hk) // <= id AUTO>
       return setTrackMode(p[0], track[p[0]]->getMode() | TRACK_MODE_INV);
 
-    if (params==3  && p[1]==HASH_KEYWORD_DC && p[2]>0) // <= id DC cab>
+    if (params==3  && p[1]=="DC"_hk && p[2]>0) // <= id DC cab>
         return setTrackMode(p[0],TRACK_MODE_DC,p[2]);
     
-    if (params==3  && p[1]==HASH_KEYWORD_DCX && p[2]>0) // <= id DCX cab>
+    if (params==3  && p[1]=="DCX"_hk && p[2]>0) // <= id DCX cab>
         return setTrackMode(p[0],TRACK_MODE_DC|TRACK_MODE_INV,p[2]);
 
     return false;

WifiESP32.cpp

@@ -164,6 +164,8 @@ bool WifiESP::setup(const char *SSid,
   if (haveSSID && havePassword && !forceAP) {
     WiFi.setHostname(hostname); // Strangely does not work unless we do it HERE!
     WiFi.mode(WIFI_STA);
+    WiFi.setScanMethod(WIFI_ALL_CHANNEL_SCAN); // Scan all channels so we find strongest
+                                               // (default in Wifi library is first match)
 #ifdef SERIAL_BT_COMMANDS
     WiFi.setSleep(true);
 #else
@@ -204,7 +206,7 @@ bool WifiESP::setup(const char *SSid,
   if (!haveSSID || forceAP) {
     // prepare all strings
     String strSSID(forceAP ? SSid : "DCCEX_");
-    String strPass(forceAP ? password : "PASS_");
+    String strPass( (forceAP && havePassword) ? password : "PASS_");
     if (!forceAP) {
       String strMac = WiFi.macAddress();
       strMac.remove(0,9);
@@ -228,7 +230,8 @@ bool WifiESP::setup(const char *SSid,
       // DIAG(F("Wifi AP SSID %s PASS %s"),strSSID.c_str(),havePassword ? password : strPass.c_str());
       DIAG(F("Wifi in AP mode"));
       LCD(5, F("Wifi: %s"), strSSID.c_str());
-      LCD(6, F("PASS: %s"),havePassword ? password : strPass.c_str());
+      if (!havePassword)
+	LCD(6, F("PASS: %s"),strPass.c_str());
       // DIAG(F("Wifi AP IP %s"),WiFi.softAPIP().toString().c_str());
       LCD(7, F("IP: %s"),WiFi.softAPIP().toString().c_str());
       wifiUp = true;

config.example.h

@@ -222,6 +222,14 @@ The configuration file for DCC-EX Command Station
 // We do not support to use the same address, for example 100(long) and 100(short)
 // at the same time, there must be a border.
 
+/////////////////////////////////////////////////////////////////////////////////////
+// Some newer 32bit microcontrollers boot very quickly, so powering on I2C and other
+// peripheral devices at the same time may result in the CommandStation booting too
+// quickly to detect them.
+// To work around this, uncomment the STARTUP_DELAY line below and set a value in
+// milliseconds that works for your environment, default is 3000 (3 seconds).
+// #define STARTUP_DELAY 3000
+
 /////////////////////////////////////////////////////////////////////////////////////
 //
 // DEFINE TURNOUTS/ACCESSORIES FOLLOW NORM RCN-213

version.h

@@ -3,7 +3,22 @@
 
 #include "StringFormatter.h"
 
-#define VERSION "5.2.18"
+#define VERSION "5.2.28"
+// 5.2.28 - ESP32: Can all Wifi channels.
+//        - ESP32: Only write Wifi password to display if it is a well known one
+// 5.2.27 - Bugfix: IOExpander memory allocation
+// 5.2.26 - Silently ignore overridden HAL defaults
+//        - include HAL_IGNORE_DEFAULTS macro in EXRAIL 
+// 5.2.25 - Fix bug causing <X> after working <D commands 
+// 5.2.24 - Exrail macro asserts to catch 
+//            : duplicate/missing automation/route/sequence/call ids
+//            : latches and reserves out of range
+//            : speeds out of range
+// 5.2.23 - KeywordHasher _hk (no functional change) 
+// 5.2.22 - Bugfixes: Empty turnout descriptions ok; negative route numbers valid.
+// 5.2.21 - Add STARTUP_DELAY config option to delay CS bootup
+// 5.2.20 - Check return of Ethernet.begin()
+// 5.2.19 - ESP32: Determine if the RMT hardware can handle DCC
 // 5.2.18 - Display network IP fix
 // 5.2.17 - ESP32 simplify network logic
 // 5.2.16 - Bugfix to allow for devices using the EX-IOExpander protocol to have no analogue or no digital pins