DC via power pin 3rd part

Fix myHal example for EX-IOExpander

GITHUB_SHA.h

@@ -1 +1 @@
-#define GITHUB_SHA "devel-202301290750Z"
+#define GITHUB_SHA "devel-202302131946Z"

IO_EXIOExpander.h

@@ -1,5 +1,5 @@
 /*
- *  © 2021, Peter Cole. All rights reserved.
+ *  © 2022, Peter Cole. All rights reserved.
  *
  *  This file is part of EX-CommandStation
  *
@@ -26,19 +26,14 @@
 * (Note the device driver is included by default)
 *
 * void halSetup() {
-*   // EXIOExpander::create(vpin, num_vpins, i2c_address, digitalPinCount, analoguePinCount);
-*   EXIOExpander::create(800, 18, 0x65, 12, 8);
+*   // EXIOExpander::create(vpin, num_vpins, i2c_address);
+*   EXIOExpander::create(800, 18, 0x65);
 * }
 * 
-* Note when defining the number of digital and analogue pins, there is no way to sanity check
-* this from the device driver, and it is up to the user to define the correct values here.
-*
-* All pins available on the EX-IOExpander device must be accounted for.
-* 
-* Vpins are allocated to digital pins first, and then analogue pins, so digital pins will
-* populate the first part of the specified vpin range, with the analogue pins populating the
-* last part of the vpin range.
-* Eg. for a default Nano, 800 - 811 are digital (D2 - D13), 812 to 817 are analogue (A0 - A3, A6/A7).
+* All pins on an EX-IOExpander device are allocated according to the pin map for the specific
+* device in use. There is no way for the device driver to sanity check pins are used for the
+* correct purpose, however the EX-IOExpander device's pin map will prevent pins being used
+* incorrectly (eg. A6/7 on Nano cannot be used for digital input/output).
 */
 
 #ifndef IO_EX_IOEXPANDER_H
@@ -54,22 +49,27 @@
  */
 class EXIOExpander : public IODevice {
 public:
-  static void create(VPIN vpin, int nPins, uint8_t i2cAddress, int numDigitalPins, int numAnaloguePins) {
-    if (checkNoOverlap(vpin, nPins, i2cAddress)) new EXIOExpander(vpin, nPins, i2cAddress, numDigitalPins, numAnaloguePins);
+
+  enum ProfileType : uint8_t {
+    Instant = 0,  // Moves immediately between positions (if duration not specified)
+    UseDuration = 0, // Use specified duration
+    Fast = 1,     // Takes around 500ms end-to-end
+    Medium = 2,   // 1 second end-to-end
+    Slow = 3,     // 2 seconds end-to-end
+    Bounce = 4,   // For semaphores/turnouts with a bit of bounce!!
+    NoPowerOff = 0x80, // Flag to be ORed in to suppress power off after move.
+  };
+
+  static void create(VPIN vpin, int nPins, uint8_t i2cAddress) {
+    if (checkNoOverlap(vpin, nPins, i2cAddress)) new EXIOExpander(vpin, nPins, i2cAddress);
   }
 
 private:  
   // Constructor
-  EXIOExpander(VPIN firstVpin, int nPins, uint8_t i2cAddress, int numDigitalPins, int numAnaloguePins) {
+  EXIOExpander(VPIN firstVpin, int nPins, uint8_t i2cAddress) {
     _firstVpin = firstVpin;
     _nPins = nPins;
     _i2cAddress = i2cAddress;
-    _numDigitalPins = numDigitalPins;
-    _numAnaloguePins = numAnaloguePins;
-    _digitalPinBytes = (numDigitalPins+7)/8;
-    _analoguePinBytes = numAnaloguePins * 2;
-    _digitalInputStates=(byte*) calloc(_digitalPinBytes,1);
-    _analogueInputStates=(byte*) calloc(_analoguePinBytes,1);
     addDevice(this);
   }
 
@@ -77,20 +77,31 @@ private:
     // Initialise EX-IOExander device
     I2CManager.begin();
     if (I2CManager.exists(_i2cAddress)) {
-      _digitalOutBuffer[0] = EXIOINIT;
-      _digitalOutBuffer[1] = _numDigitalPins;
-      _digitalOutBuffer[2] = _numAnaloguePins;
-      // Send config, if EXIORDY returned, we're good, otherwise go offline
-      I2CManager.read(_i2cAddress, _commandBuffer, 1, _digitalOutBuffer, 3);
-      if (_commandBuffer[0] != EXIORDY) {
+      _command4Buffer[0] = EXIOINIT;
+      _command4Buffer[1] = _nPins;
+      _command4Buffer[2] = _firstVpin & 0xFF;
+      _command4Buffer[3] = _firstVpin >> 8;
+      // Send config, if EXIOPINS returned, we're good, setup pin buffers, otherwise go offline
+      I2CManager.read(_i2cAddress, _receive3Buffer, 3, _command4Buffer, 4);
+      if (_receive3Buffer[0] == EXIOPINS) {
+        _numDigitalPins = _receive3Buffer[1];
+        _numAnaloguePins = _receive3Buffer[2];
+        _digitalPinBytes = (_numDigitalPins + 7)/8;
+        _digitalInputStates=(byte*) calloc(_digitalPinBytes,1);
+        _analoguePinBytes = _numAnaloguePins * 2;
+        _analogueInputStates = (byte*) calloc(_analoguePinBytes, 1);
+        _analoguePinMap = (uint8_t*) calloc(_numAnaloguePins, 1);
+      } else {
         DIAG(F("ERROR configuring EX-IOExpander device, I2C:x%x"), _i2cAddress);
         _deviceState = DEVSTATE_FAILED;
         return;
       }
+      // We now need to retrieve the analogue pin map
+      _command1Buffer[0] = EXIOINITA;
+      I2CManager.read(_i2cAddress, _analoguePinMap, _numAnaloguePins, _command1Buffer, 1);
       // Attempt to get version, if we don't get it, we don't care, don't go offline
-      // Using digital in buffer in reverse to save RAM
-      _commandBuffer[0] = EXIOVER;
-      I2CManager.read(_i2cAddress, _versionBuffer, 3, _commandBuffer, 1);
+      _command1Buffer[0] = EXIOVER;
+      I2CManager.read(_i2cAddress, _versionBuffer, 3, _command1Buffer, 1);
       _majorVer = _versionBuffer[0];
       _minorVer = _versionBuffer[1];
       _patchVer = _versionBuffer[2];
@@ -105,88 +116,117 @@ private:
     }
   }
 
+  // Digital input pin configuration, used to enable on EX-IOExpander device and set pullups if in use
   bool _configure(VPIN vpin, ConfigTypeEnum configType, int paramCount, int params[]) override {
-    if (configType != CONFIGURE_INPUT) return false;
     if (paramCount != 1) return false;
-    if (vpin >= _firstVpin + _numDigitalPins) {
-      DIAG(F("EX-IOExpander ERROR: Vpin %d is an analogue pin, cannot use as a digital pin"), vpin);
+    int pin = vpin - _firstVpin;
+    if (configType == CONFIGURE_INPUT) {
+      bool pullup = params[0];
+      _digitalOutBuffer[0] = EXIODPUP;
+      _digitalOutBuffer[1] = pin;
+      _digitalOutBuffer[2] = pullup;
+      I2CManager.read(_i2cAddress, _command1Buffer, 1, _digitalOutBuffer, 3);
+      if (_command1Buffer[0] == EXIORDY) {
+        return true;
+      } else {
+        DIAG(F("Vpin %d cannot be used as a digital input pin"), (int)vpin);
+        return false;
+      }
+    } else {
       return false;
     }
-    bool pullup = params[0];
-    int pin = vpin - _firstVpin;
-    _digitalOutBuffer[0] = EXIODPUP;
-    _digitalOutBuffer[1] = pin;
-    _digitalOutBuffer[2] = pullup;
-    I2CManager.write(_i2cAddress, _digitalOutBuffer, 3);
-    return true;
   }
 
-  // We only use this to detect incorrect use of analogue pins
+  // Analogue input pin configuration, used to enable on EX-IOExpander device
   int _configureAnalogIn(VPIN vpin) override {
-    if (vpin < _firstVpin + _numDigitalPins) {
-      DIAG(F("EX-IOExpander ERROR: Vpin %d is a digital pin, cannot use as an analogue pin"), vpin);
+    int pin = vpin - _firstVpin;
+    _command2Buffer[0] = EXIOENAN;
+    _command2Buffer[1] = pin;
+    I2CManager.read(_i2cAddress, _command1Buffer, 1, _command2Buffer, 2);
+    if (_command1Buffer[0] == EXIORDY) {
+      return true;
+    } else {
+      DIAG(F("Vpin %d cannot be used as an analogue input pin"), (int)vpin);
       return false;
     }
-    int pin = vpin - _firstVpin;
-    _analogueOutBuffer[0] = EXIOENAN;
-    _analogueOutBuffer[1] = pin;
-    I2CManager.write(_i2cAddress, _analogueOutBuffer, 2);
     return true;
   }
 
+  // Main loop, collect both digital and analogue pin states continuously (faster sensor/input reads)
   void _loop(unsigned long currentMicros) override {
     (void)currentMicros; // remove warning
-    _commandBuffer[0] = EXIORDD;
-    I2CManager.read(_i2cAddress, _digitalInputStates, _digitalPinBytes, _commandBuffer, 1);
-    _commandBuffer[0] = EXIORDAN;
-    I2CManager.read(_i2cAddress, _analogueInputStates, _analoguePinBytes, _commandBuffer, 1);
+    if (_deviceState == DEVSTATE_FAILED) return;
+    _command1Buffer[0] = EXIORDD;
+    I2CManager.read(_i2cAddress, _digitalInputStates, _digitalPinBytes, _command1Buffer, 1);
+    _command1Buffer[0] = EXIORDAN;
+    I2CManager.read(_i2cAddress, _analogueInputStates, _analoguePinBytes, _command1Buffer, 1);
   }
 
+  // Obtain the correct analogue input value
   int _readAnalogue(VPIN vpin) override {
-    if (vpin < _firstVpin + _numDigitalPins) return false;
-    int pin = vpin - _firstVpin - _numDigitalPins;
-    uint8_t _pinLSBByte = pin * 2;
+    if (_deviceState == DEVSTATE_FAILED) return 0;
+    int pin = vpin - _firstVpin;
+    uint8_t _pinLSBByte;
+    for (uint8_t aPin = 0; aPin < _numAnaloguePins; aPin++) {
+      if (_analoguePinMap[aPin] == pin) {
+        _pinLSBByte = aPin * 2;
+      }
+    }
     uint8_t _pinMSBByte = _pinLSBByte + 1;
     return (_analogueInputStates[_pinMSBByte] << 8) + _analogueInputStates[_pinLSBByte];
   }
 
+  // Obtain the correct digital input value
   int _read(VPIN vpin) override {
-    if (vpin >= _firstVpin + _numDigitalPins) return false;
+    if (_deviceState == DEVSTATE_FAILED) return 0;
     int pin = vpin - _firstVpin;
     uint8_t pinByte = pin / 8;
-    bool value = _digitalInputStates[pinByte] >> (pin - pinByte * 8);
+    bool value = bitRead(_digitalInputStates[pinByte], pin - pinByte * 8);
     return value;
   }
 
   void _write(VPIN vpin, int value) override {
-    if (vpin >= _firstVpin + _numDigitalPins) return;
+    if (_deviceState == DEVSTATE_FAILED) return;
     int pin = vpin - _firstVpin;
     _digitalOutBuffer[0] = EXIOWRD;
     _digitalOutBuffer[1] = pin;
     _digitalOutBuffer[2] = value;
-    I2CManager.write(_i2cAddress, _digitalOutBuffer, 3);
+    I2CManager.read(_i2cAddress, _command1Buffer, 1, _digitalOutBuffer, 3);
+    if (_command1Buffer[0] != EXIORDY) {
+      DIAG(F("Vpin %d cannot be used as a digital output pin"), (int)vpin);
+    }
+  }
+
+  void _writeAnalogue(VPIN vpin, int value, uint8_t profile, uint16_t duration) override {
+    if (_deviceState == DEVSTATE_FAILED) return;
+    int pin = vpin - _firstVpin;
+#ifdef DIAG_IO
+    DIAG(F("Servo: WriteAnalogue Vpin:%d Value:%d Profile:%d Duration:%d %S"), 
+      vpin, value, profile, duration, _deviceState == DEVSTATE_FAILED?F("DEVSTATE_FAILED"):F(""));
+#endif
+    _servoBuffer[0] = EXIOWRAN;
+    _servoBuffer[1] = pin;
+    _servoBuffer[2] = value & 0xFF;
+    _servoBuffer[3] = value >> 8;
+    _servoBuffer[4] = profile;
+    _servoBuffer[5] = duration & 0xFF;
+    _servoBuffer[6] = duration >> 8;
+    I2CManager.read(_i2cAddress, _command1Buffer, 1, _servoBuffer, 7);
+    if (_command1Buffer[0] != EXIORDY) {
+      DIAG(F("Vpin %d cannot be used as a servo/PWM pin"), (int)vpin);
+    }
   }
 
   void _display() override {
-    int _firstAnalogue, _lastAnalogue;
-    if (_numAnaloguePins == 0) {
-      _firstAnalogue = 0;
-      _lastAnalogue = 0;
-    } else {
-      _firstAnalogue = _firstVpin + _numDigitalPins;
-      _lastAnalogue = _firstVpin + _nPins - 1;
-    }
-    DIAG(F("EX-IOExpander I2C:x%x v%d.%d.%d: %d Digital Vpins %d-%d, %d Analogue Vpins %d-%d %S"),
+    DIAG(F("EX-IOExpander I2C:x%x v%d.%d.%d Vpins %d-%d %S"),
               _i2cAddress, _majorVer, _minorVer, _patchVer,
-              _numDigitalPins, _firstVpin, _firstVpin + _numDigitalPins - 1,
-              _numAnaloguePins, _firstAnalogue, _lastAnalogue,
+              (int)_firstVpin, (int)_firstVpin+_nPins-1,
               _deviceState == DEVSTATE_FAILED ? F("OFFLINE") : F(""));
   }
 
   uint8_t _i2cAddress;
-  uint8_t _numDigitalPins;
-  uint8_t _numAnaloguePins;
-  byte _analogueOutBuffer[2];
+  uint8_t _numDigitalPins = 0;
+  uint8_t _numAnaloguePins = 0;
   byte _digitalOutBuffer[3];
   uint8_t _versionBuffer[3];
   uint8_t _majorVer = 0;
@@ -196,8 +236,14 @@ private:
   byte* _analogueInputStates;
   uint8_t _digitalPinBytes = 0;
   uint8_t _analoguePinBytes = 0;
-  byte _commandBuffer[1];
+  byte _command1Buffer[1];
+  byte _command2Buffer[2];
+  byte _command4Buffer[4];
+  byte _receive3Buffer[3];
+  byte _servoBuffer[7];
+  uint8_t* _analoguePinMap;
 
+  // EX-IOExpander protocol flags
   enum {
     EXIOINIT = 0xE0,    // Flag to initialise setup procedure
     EXIORDY = 0xE1,     // Flag we have completed setup procedure, also for EX-IO to ACK setup
@@ -206,7 +252,11 @@ private:
     EXIORDAN = 0xE4,    // Flag to read an analogue input
     EXIOWRD = 0xE5,     // Flag for digital write
     EXIORDD = 0xE6,     // Flag to read digital input
-    EXIOENAN = 0xE7,    // Flag eo enable an analogue pin
+    EXIOENAN = 0xE7,    // Flag to enable an analogue pin
+    EXIOINITA = 0xE8,   // Flag we're receiving analogue pin mappings
+    EXIOPINS = 0xE9,    // Flag we're receiving pin counts for buffers
+    EXIOWRAN = 0xEA,   // Flag we're sending an analogue write (PWM)
+    EXIOERR = 0xEF,     // Flag we've received an error
   };
 };
 

LCN.cpp

@@ -43,7 +43,7 @@ void LCN::loop() {
   
   while (stream->available()) {
     int ch = stream->read();
-    if (ch >= 0 && ch <= '9') {  // accumulate id value
+    if (ch >= '0' && ch <= '9') {  // accumulate id value
       id = 10 * id + ch - '0';
     }
     else if (ch == 't' || ch == 'T') { // Turnout opcodes

MotorDriver.cpp

@@ -85,7 +85,6 @@ MotorDriver::MotorDriver(int16_t power_pin, byte signal_pin, byte signal_pin2, i
     getFastPin(F("BRAKE"),brakePin,fastBrakePin);
     // if brake is used for railcom  cutout we need to do PORTX register trick here as well
     pinMode(brakePin, OUTPUT);
-    setBrake(true);  // start with brake on in case we hace DC stuff going on
   }
   else brakePin=UNUSED_PIN;
   
@@ -147,6 +146,8 @@ void MotorDriver::setPower(POWERMODE mode) {
     noInterrupts();
     IODevice::write(powerPin,invertPower ? LOW : HIGH);
     interrupts();
+    if (DCinuse)
+      setDCSignal(curSpeedCode);
     if (isProgTrack)
       DCCWaveform::progTrack.clearResets();
   }
@@ -154,6 +155,13 @@ void MotorDriver::setPower(POWERMODE mode) {
       noInterrupts();
       IODevice::write(powerPin,invertPower ? HIGH : LOW);
       interrupts();
+      if (DCinuse) {
+	// remember current (DC) speed
+	// but set PWM to zero/stop
+	byte s = curSpeedCode;
+	setDCSignal(128);
+	curSpeedCode = s;
+      }
   }
   powerMode=mode; 
 }
@@ -238,26 +246,51 @@ void MotorDriver::startCurrentFromHW() {
 #if defined(ARDUINO_ARCH_ESP32)
 uint16_t taurustones[28] = { 165, 175, 196, 220,
 			     247, 262, 294, 330,
-			     249, 392, 440, 494,
+			     349, 392, 440, 494,
 			     523, 587, 659, 698,
 			     494, 440, 392, 249,
 			     330, 284, 262, 247,
 			     220, 196, 175, 165 };
 #endif
 void MotorDriver::setDCSignal(byte speedcode) {
-  if (brakePin == UNUSED_PIN)
-    return;
+  curSpeedCode = speedcode;
+  DCinuse = true;
+
 #if defined(ARDUINO_AVR_UNO)
-  TCCR2B = (TCCR2B & B11111000) | B00000110; // set divisor on timer 2 to result in (approx) 122.55Hz
+  if (powerPin == 3 || powerPin == 11)
+    TCCR2B = (TCCR2B & B11111000) | B00000110; // D3, D11: set divisor on timer 2 to result in (approx) 122.55Hz
 #endif
 #if defined(ARDUINO_AVR_MEGA) || defined(ARDUINO_AVR_MEGA2560)
-  TCCR2B = (TCCR2B & B11111000) | B00000110; // set divisor on timer 2 to result in (approx) 122.55Hz
-  TCCR4B = (TCCR4B & B11111000) | B00000100; // same for timer 4 but maxcount and thus divisor differs
+// As timer 0 is the system timer, we leave it alone
+//TCCR0B = (TCCR0B & B11111000) | B00000100; // D4, D13    : 122 or 244Hz?
+// As we use timer 1 for DCC we leave it alone
+//TCCR1B = (TCCR1B & B11111000) | B00000100; // D11, D12   : 122Hz
+  switch(powerPin) {
+  case 9:
+  case 10:
+    TCCR2B = (TCCR2B & B11111000) | B00000110; // D9, D10    : 122Hz
+    break;
+  case 2:
+  case 3:
+  case 5:
+    TCCR3B = (TCCR3B & B11111000) | B00000100; // D2, D3, D5 : 122Hz but maxcount and thus divisor differs
+    break;
+  case 6:
+  case 7:
+  case 8:
+    TCCR4B = (TCCR4B & B11111000) | B00000100; // D6, D7, D8 : 122Hz but maxcount and thus divisor differs
+    break;
+  case 44:
+  case 45:
+  case 46:
+    TCCR5B = (TCCR5B & B11111000) | B00000100; // D44,D45,D46: 122Hz but maxcount and thus divisor differs
+    break;
+  }
 #endif
   // spedcoode is a dcc speed & direction
   byte tSpeed=speedcode & 0x7F; // DCC Speed with 0,1 stop and speed steps 2 to 127
   byte tDir=speedcode & 0x80;
-  byte brake;
+  byte pwmratio;
 #if defined(ARDUINO_ARCH_ESP32)
   {
     int f = 131;
@@ -266,18 +299,18 @@ void MotorDriver::setDCSignal(byte speedcode) {
 	f = taurustones[ (tSpeed-2)/2 ] ;
       }
     }
-    DCCEXanalogWriteFrequency(brakePin, f); // set DC PWM frequency to 100Hz XXX May move to setup
+    DCCEXanalogWriteFrequency(powerPin, f); // set DC PWM frequency to 100Hz XXX May move to setup
   }
 #endif
-  if (tSpeed <= 1) brake = 255;
-  else if (tSpeed >= 127) brake = 0;
-  else  brake = 2 * (128-tSpeed);
-  if (invertBrake)
-    brake=255-brake;
+  if (tSpeed <= 1) pwmratio = 0;
+  else if (tSpeed >= 127) pwmratio = 255;
+  else  pwmratio = 2 * tSpeed;
+  if (invertPower)
+    pwmratio =255-pwmratio;
 #if defined(ARDUINO_ARCH_ESP32)
-  DCCEXanalogWrite(brakePin,brake);
+  DCCEXanalogWrite(powerPin,pwmratio);
 #else
-  analogWrite(brakePin,brake);
+  analogWrite(powerPin,pwmratio);
 #endif
   //DIAG(F("DCSignal %d"), speedcode);
   if (HAVE_PORTA(fastSignalPin.shadowinout == &PORTA)) {

MotorDriver.h

@@ -146,25 +146,27 @@ class MotorDriver {
     void setDCSignal(byte speedByte);
     inline void detachDCSignal() {
 #if defined(__arm__)
-      pinMode(brakePin, OUTPUT);
+      pinMode(powerPin, OUTPUT);
 #elif defined(ARDUINO_ARCH_ESP32)
-      ledcDetachPin(brakePin);
+      ledcDetachPin(powerPin);
 #else
       setDCSignal(128);
 #endif
+      DCinuse = false;
     };
     int  getCurrentRaw(bool fromISR=false);
     unsigned int raw2mA( int raw);
     unsigned int mA2raw( unsigned int mA);
-    inline bool brakeCanPWM() {
+    inline bool powerPinCanPWM() {
 #if defined(ARDUINO_ARCH_ESP32) || defined(__arm__)
       // TODO: on ARM we can use digitalPinHasPWM, and may wish/need to
       return true;
 #else
-#ifdef digitalPinToTimer
-      return ((brakePin!=UNUSED_PIN) && (digitalPinToTimer(brakePin)));
+#ifdef digitalPinHasPWM
+      return digitalPinHasPWM(powerPin);
 #else
-      return (brakePin<14 && brakePin >1);
+#warning No good digitalPinHasPWM doing approximation
+      return (powerPin<14 && powerPin >1);
 #endif //digitalPinToTimer
 #endif //ESP32/ARM
     }
@@ -232,6 +234,7 @@ class MotorDriver {
     static const int TRIP_CURRENT_PROG=250;
     unsigned long power_sample_overload_wait = POWER_SAMPLE_OVERLOAD_WAIT;
     unsigned int power_good_counter = 0;
-
+    bool DCinuse = false;
+    byte curSpeedCode = 0;
 };
 #endif

TrackManager.cpp

@@ -177,10 +177,10 @@ bool TrackManager::setTrackMode(byte trackToSet, TRACK_MODE mode, int16_t dcAddr
     if (trackToSet>lastTrack || track[trackToSet]==NULL) return false;
 
     //DIAG(F("Track=%c"),trackToSet+'A');
-    // DC tracks require a motorDriver that can set brake!
+    // DC tracks require a motorDriver that can set power pin PWM
     if ((mode==TRACK_MODE_DC || mode==TRACK_MODE_DCX)
-         && !track[trackToSet]->brakeCanPWM()) {
-             DIAG(F("Brake pin can't PWM: No DC"));
+         && !track[trackToSet]->powerPinCanPWM()) {
+             DIAG(F("Power pin can't PWM: No DC"));
              return false; 
          }
 
@@ -218,7 +218,6 @@ bool TrackManager::setTrackMode(byte trackToSet, TRACK_MODE mode, int16_t dcAddr
     if (!(mode==TRACK_MODE_DC || mode==TRACK_MODE_DCX)) {
       // DCC tracks need to have set the PWM to zero or they will not work.
       track[trackToSet]->detachDCSignal();
-      track[trackToSet]->setBrake(false);
     }
 
     // EXT is a special case where the signal pin is
@@ -396,7 +395,6 @@ void TrackManager::setPower2(bool setProg,POWERMODE mode) {
             case TRACK_MODE_DC:
             case TRACK_MODE_DCX:
                 if (setProg) break; 
-                driver->setBrake(true); // DC starts with brake on
                 applyDCSpeed(t);        // speed match DCC throttles
                 driver->setPower(mode);
                 break;  

installer.sh

@@ -37,6 +37,10 @@ function need () {
 
 
 need git
+if test -d `basename "$DCCEXGITURL"` ; then
+    : assume we are almost there
+    cd `basename "$DCCEXGITURL"` || exit 255
+fi
 if test -d .git ; then
     : assume we are right here
     git pull
@@ -44,6 +48,21 @@ else
     git clone "$DCCEXGITURL"
     cd `basename "$DCCEXGITURL"` || exit 255
 fi
+
+# prepare versions
+VERSIONS=/tmp/versions.$$
+git tag --sort=v:refname | grep Prod  | tail -1  >  $VERSIONS
+echo master                                      >> $VERSIONS
+git tag --sort=v:refname | grep Devel | tail -1  >> $VERSIONS
+echo devel                                       >> $VERSIONS
+
+# ask user what version to use
+echo "What version to use? (give line number) If in doubt, use 1"
+cat -n $VERSIONS
+echo -n "> "
+LINE=`awk 'BEGIN {getline A < "/dev/tty"} ; A == NR {print}' $VERSIONS`
+git checkout $LINE
+
 if test -f config.h ; then
     : all well
 else
@@ -63,7 +82,14 @@ $ACLI core update-index || exit 255
 
 # Board discovery
 BOARDS=/tmp/boards.$$
-$ACLI board list | grep serial > $BOARDS
+$ACLI board list > /dev/null               # download missing components
+$ACLI board list | grep serial > $BOARDS   # real run
+if test -s $BOARDS ; then
+    : all well
+else
+    echo "$ACLI: No boards found"
+    exit 255
+fi
 if test x`< $BOARDS wc -l` = 'x1' ; then
     LINE=`cat $BOARDS`
 else
@@ -96,6 +122,6 @@ echo FQBN is $FQBN
 
 # Install phase
 $ACLI core install `echo $FQBN | sed 's,:[^:]*$,,1'` # remove last component to get package
-$ACLI board attach -p $PORT --fqbn $FQBN $PWD
-$ACLI compile --fqbn $FQBN $PWD
-$ACLI upload -v -t -p $PORT $PWD
+$ACLI board attach -p $PORT --fqbn $FQBN "$PWD"
+$ACLI compile --fqbn $FQBN "$PWD"
+$ACLI upload -v -t -p $PORT "$PWD"

myHal.cpp_example.txt

@@ -179,19 +179,17 @@ void halSetup() {
   //=======================================================================
   // The following directive defines an EX-IOExpander instance.
   //=======================================================================
-  // EXIOExpander::create(VPIN, Number of VPINs, I2C Address, Digital pin count, Analogue pin count)
+  // EXIOExpander::create(VPIN, Number of VPINs, I2C Address)
   //
   // The parameters are:
   //   VPIN=an available Vpin
-  //   Number of VPINs=Digital pin count + Analogue pin count (must match device in use as per documentation)
+  //   Number of VPINs=pin count (must match device in use as per documentation)
   //   I2C address=an available I2C address (default 0x65)
   //
   // Note that the I2C address is defined in the EX-IOExpander code, and 0x65 is the default.
-  // The first example is for an Arduino Nano with the default pin allocations.
-  // The second example is for an Arduino Uno using all pins as digital only.
+  // The example is for an Arduino Nano.
 
-  //EXIOExpander::create(800, 18, 0x65, 12, 6);
-  //EXIOExpander::create(820, 16, 0x66, 16, 0);
+  //EXIOExpander::create(800, 18, 0x65);
 
 
   //=======================================================================

version.h

@@ -4,7 +4,11 @@
 #include "StringFormatter.h"
 
 
-#define VERSION "4.2.14"
+#define VERSION "4.2.17"
+// 4.2.17 LCN bugfix
+// 4.2.16 Move EX-IOExpander servo support to the EX-IOExpander software
+// 4.2.15 Add basic experimental PWM support to EX-IOExpander
+//        EX-IOExpander 0.0.14 minimum required
 // 4.2.14 STM32F4xx fast ADC read implementation
 // 4.2.13 Broadcast power for <s> again
 // 4.2.12 Bugfix for issue #299 TurnoutDescription NULL