uploaded project

src/DallasTemperature/DallasTemperature.h

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+#ifndef DallasTemperature_h
+#define DallasTemperature_h
+
+#define DALLASTEMPLIBVERSION "3.8.1" // To be deprecated -> TODO remove in 4.0.0
+
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+
+// set to true to include code for new and delete operators
+#ifndef REQUIRESNEW
+#define REQUIRESNEW false
+#endif
+
+// set to true to include code implementing alarm search functions
+#ifndef REQUIRESALARMS
+#define REQUIRESALARMS true
+#endif
+
+#include <inttypes.h>
+#ifdef __STM32F1__
+#include <OneWireSTM.h>
+#else
+#include "../OneWire/OneWire.h"
+#endif
+
+// Model IDs
+#define DS18S20MODEL 0x10  // also DS1820
+#define DS18B20MODEL 0x28  // also MAX31820
+#define DS1822MODEL  0x22
+#define DS1825MODEL  0x3B
+#define DS28EA00MODEL 0x42
+
+// Error Codes
+#define DEVICE_DISCONNECTED_C -127
+#define DEVICE_DISCONNECTED_F -196.6
+#define DEVICE_DISCONNECTED_RAW -7040
+
+// For readPowerSupply on oneWire bus
+// definition of nullptr for C++ < 11, using official workaround:
+// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2431.pdf
+#if __cplusplus < 201103L
+const class
+{
+public:
+	template <class T>
+	operator T *() const
+	{
+		return 0;
+	}
+	template <class C, class T>
+	operator T C::*() const
+	{
+		return 0;
+	}
+
+private:
+	void operator&() const;
+} nullptr = {};
+#endif
+
+typedef uint8_t DeviceAddress[8];
+
+class DallasTemperature {
+public:
+
+	DallasTemperature();
+	DallasTemperature(OneWire*);
+	DallasTemperature(OneWire*, uint8_t);
+
+	void setOneWire(OneWire*);
+
+    void setPullupPin(uint8_t);
+
+	// initialise bus
+	void begin(void);
+
+	// returns the number of devices found on the bus
+	uint8_t getDeviceCount(void);
+
+	// returns the number of DS18xxx Family devices on bus
+	uint8_t getDS18Count(void);
+
+	// returns true if address is valid
+	bool validAddress(const uint8_t*);
+
+	// returns true if address is of the family of sensors the lib supports.
+	bool validFamily(const uint8_t* deviceAddress);
+
+	// finds an address at a given index on the bus
+	bool getAddress(uint8_t*, uint8_t);
+
+	// attempt to determine if the device at the given address is connected to the bus
+	bool isConnected(const uint8_t*);
+
+	// attempt to determine if the device at the given address is connected to the bus
+	// also allows for updating the read scratchpad
+	bool isConnected(const uint8_t*, uint8_t*);
+
+	// read device's scratchpad
+	bool readScratchPad(const uint8_t*, uint8_t*);
+
+	// write device's scratchpad
+	void writeScratchPad(const uint8_t*, const uint8_t*);
+
+	// read device's power requirements
+	bool readPowerSupply(const uint8_t* deviceAddress = nullptr);
+
+	// get global resolution
+	uint8_t getResolution();
+
+	// set global resolution to 9, 10, 11, or 12 bits
+	void setResolution(uint8_t);
+
+	// returns the device resolution: 9, 10, 11, or 12 bits
+	uint8_t getResolution(const uint8_t*);
+
+	// set resolution of a device to 9, 10, 11, or 12 bits
+	bool setResolution(const uint8_t*, uint8_t,
+			bool skipGlobalBitResolutionCalculation = false);
+
+	// sets/gets the waitForConversion flag
+	void setWaitForConversion(bool);
+	bool getWaitForConversion(void);
+
+	// sets/gets the checkForConversion flag
+	void setCheckForConversion(bool);
+	bool getCheckForConversion(void);
+
+	// sends command for all devices on the bus to perform a temperature conversion
+	void requestTemperatures(void);
+
+	// sends command for one device to perform a temperature conversion by address
+	bool requestTemperaturesByAddress(const uint8_t*);
+
+	// sends command for one device to perform a temperature conversion by index
+	bool requestTemperaturesByIndex(uint8_t);
+
+	// returns temperature raw value (12 bit integer of 1/128 degrees C)
+	int16_t getTemp(const uint8_t*);
+
+	// returns temperature in degrees C
+	float getTempC(const uint8_t*);
+
+	// returns temperature in degrees F
+	float getTempF(const uint8_t*);
+
+	// Get temperature for device index (slow)
+	float getTempCByIndex(uint8_t);
+
+	// Get temperature for device index (slow)
+	float getTempFByIndex(uint8_t);
+
+	// returns true if the bus requires parasite power
+	bool isParasitePowerMode(void);
+
+	// Is a conversion complete on the wire? Only applies to the first sensor on the wire.
+	bool isConversionComplete(void);
+
+  int16_t millisToWaitForConversion(uint8_t);
+  
+  // Sends command to one device to save values from scratchpad to EEPROM by index
+  // Returns true if no errors were encountered, false indicates failure
+  bool saveScratchPadByIndex(uint8_t);
+  
+  // Sends command to one or more devices to save values from scratchpad to EEPROM
+  // Returns true if no errors were encountered, false indicates failure
+  bool saveScratchPad(const uint8_t* = nullptr);
+  
+  // Sends command to one device to recall values from EEPROM to scratchpad by index
+  // Returns true if no errors were encountered, false indicates failure
+  bool recallScratchPadByIndex(uint8_t);
+  
+  // Sends command to one or more devices to recall values from EEPROM to scratchpad
+  // Returns true if no errors were encountered, false indicates failure
+  bool recallScratchPad(const uint8_t* = nullptr);
+  
+  // Sets the autoSaveScratchPad flag
+  void setAutoSaveScratchPad(bool);
+  
+  // Gets the autoSaveScratchPad flag
+  bool getAutoSaveScratchPad(void);
+
+#if REQUIRESALARMS
+
+	typedef void AlarmHandler(const uint8_t*);
+
+	// sets the high alarm temperature for a device
+	// accepts a int8_t.  valid range is -55C - 125C
+	void setHighAlarmTemp(const uint8_t*, int8_t);
+
+	// sets the low alarm temperature for a device
+	// accepts a int8_t.  valid range is -55C - 125C
+	void setLowAlarmTemp(const uint8_t*, int8_t);
+
+	// returns a int8_t with the current high alarm temperature for a device
+	// in the range -55C - 125C
+	int8_t getHighAlarmTemp(const uint8_t*);
+
+	// returns a int8_t with the current low alarm temperature for a device
+	// in the range -55C - 125C
+	int8_t getLowAlarmTemp(const uint8_t*);
+
+	// resets internal variables used for the alarm search
+	void resetAlarmSearch(void);
+
+	// search the wire for devices with active alarms
+	bool alarmSearch(uint8_t*);
+
+	// returns true if ia specific device has an alarm
+	bool hasAlarm(const uint8_t*);
+
+	// returns true if any device is reporting an alarm on the bus
+	bool hasAlarm(void);
+
+	// runs the alarm handler for all devices returned by alarmSearch()
+	void processAlarms(void);
+
+	// sets the alarm handler
+	void setAlarmHandler(const AlarmHandler *);
+
+	// returns true if an AlarmHandler has been set
+	bool hasAlarmHandler();
+
+#endif
+
+	// if no alarm handler is used the two bytes can be used as user data
+	// example of such usage is an ID.
+	// note if device is not connected it will fail writing the data.
+	// note if address cannot be found no error will be reported.
+	// in short use carefully
+	void setUserData(const uint8_t*, int16_t);
+	void setUserDataByIndex(uint8_t, int16_t);
+	int16_t getUserData(const uint8_t*);
+	int16_t getUserDataByIndex(uint8_t);
+
+	// convert from Celsius to Fahrenheit
+	static float toFahrenheit(float);
+
+	// convert from Fahrenheit to Celsius
+	static float toCelsius(float);
+
+	// convert from raw to Celsius
+	static float rawToCelsius(int16_t);
+
+	// convert from raw to Fahrenheit
+	static float rawToFahrenheit(int16_t);
+
+#if REQUIRESNEW
+
+	// initialize memory area
+	void* operator new (unsigned int);
+
+	// delete memory reference
+	void operator delete(void*);
+
+#endif
+
+private:
+	typedef uint8_t ScratchPad[9];
+
+	// parasite power on or off
+	bool parasite;
+
+	// external pullup
+	bool useExternalPullup;
+	uint8_t pullupPin;
+
+	// used to determine the delay amount needed to allow for the
+	// temperature conversion to take place
+	uint8_t bitResolution;
+
+	// used to requestTemperature with or without delay
+	bool waitForConversion;
+
+	// used to requestTemperature to dynamically check if a conversion is complete
+	bool checkForConversion;
+
+  // used to determine if values will be saved from scratchpad to EEPROM on every scratchpad write
+  bool autoSaveScratchPad;
+
+	// count of devices on the bus
+	uint8_t devices;
+
+	// count of DS18xxx Family devices on bus
+	uint8_t ds18Count;
+
+	// Take a pointer to one wire instance
+	OneWire* _wire;
+
+	// reads scratchpad and returns the raw temperature
+	int16_t calculateTemperature(const uint8_t*, uint8_t*);
+
+	void blockTillConversionComplete(uint8_t);
+
+	// Returns true if all bytes of scratchPad are '\0'
+	bool isAllZeros(const uint8_t* const scratchPad, const size_t length = 9);
+
+    // External pullup control
+    void activateExternalPullup(void);
+    void deactivateExternalPullup(void);
+
+#if REQUIRESALARMS
+
+	// required for alarmSearch
+	uint8_t alarmSearchAddress[8];
+	int8_t alarmSearchJunction;
+	uint8_t alarmSearchExhausted;
+
+	// the alarm handler function pointer
+	AlarmHandler *_AlarmHandler;
+
+#endif
+
+};
+#endif

src/DallasTemperature/README.md

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+# Arduino Library for Maxim Temperature Integrated Circuits
+
+## Usage
+
+This library supports the following devices :
+
+
+* DS18B20
+* DS18S20 - Please note there appears to be an issue with this series.
+* DS1822
+* DS1820
+* MAX31820
+
+
+You will need a pull-up resistor of about 5 KOhm between the 1-Wire data line
+and your 5V power. If you are using the DS18B20, ground pins 1 and 3. The
+centre pin is the data line '1-wire'.
+
+In case of temperature conversion problems (result is `-85`), strong pull-up setup may be necessary. See section 
+_Powering the DS18B20_ in 
+[DS18B20 datasheet](https://datasheets.maximintegrated.com/en/ds/DS18B20.pdf) (page 7)
+and use `DallasTemperature(OneWire*, uint8_t)` constructor.
+
+We have included a "REQUIRESNEW" and "REQUIRESALARMS" definition. If you 
+want to slim down the code feel free to use either of these by including
+
+
+
+	#define REQUIRESNEW 
+
+or 
+
+	#define REQUIRESALARMS
+
+
+at the top of DallasTemperature.h
+
+Finally, please include OneWire from Paul Stoffregen in the library manager before you begin.
+
+## Credits
+
+The OneWire code has been derived from
+http://www.arduino.cc/playground/Learning/OneWire.
+Miles Burton <miles@mnetcs.com> originally developed this library.
+Tim Newsome <nuisance@casualhacker.net> added support for multiple sensors on
+the same bus.
+Guil Barros [gfbarros@bappos.com] added getTempByAddress (v3.5)
+   Note: these are implemented as getTempC(address) and getTempF(address)
+Rob Tillaart [rob.tillaart@gmail.com] added async modus (v3.7.0)
+
+
+## Website
+
+
+You can find the latest version of the library at
+https://www.milesburton.com/Dallas_Temperature_Control_Library
+
+# License
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License as published by the Free Software Foundation; either
+version 2.1 of the License, or (at your option) any later version.
+
+This library 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
+Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public
+License along with this library; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

src/DallasTemperature/keywords.txt

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+#######################################
+# Syntax Coloring Map For DallasTemperature
+#######################################
+
+#######################################
+# Datatypes (KEYWORD1)
+#######################################
+DallasTemperature	KEYWORD1
+OneWire	KEYWORD1
+AlarmHandler	KEYWORD1
+DeviceAddress	KEYWORD1
+
+#######################################
+# Methods and Functions (KEYWORD2)
+#######################################
+
+setOneWire	KEYWORD2
+setPullupPin	KEYWORD2
+setResolution	KEYWORD2
+getResolution	KEYWORD2
+getTemp	KEYWORD2
+getTempC	KEYWORD2
+toFahrenheit	KEYWORD2
+getTempF	KEYWORD2
+getTempCByIndex	KEYWORD2
+getTempFByIndex	KEYWORD2
+rawToCelsius	KEYWORD2
+rawToFahrenheit	KEYWORD2
+setWaitForConversion	KEYWORD2
+getWaitForConversion	KEYWORD2
+requestTemperatures	KEYWORD2
+requestTemperaturesByAddress	KEYWORD2
+requestTemperaturesByIndex	KEYWORD2
+setCheckForConversion	KEYWORD2
+getCheckForConversion	KEYWORD2
+isConversionComplete	KEYWORD2
+millisToWaitForConversion	KEYWORD2
+isParasitePowerMode	KEYWORD2
+begin	KEYWORD2
+getDeviceCount	KEYWORD2
+getDS18Count	KEYWORD2
+getAddress	KEYWORD2
+validAddress	KEYWORD2
+validFamily	KEYWORD2
+isConnected	KEYWORD2
+readScratchPad	KEYWORD2
+writeScratchPad	KEYWORD2
+readPowerSupply	KEYWORD2
+saveScratchPadByIndex	KEYWORD2
+saveScratchPad	KEYWORD2
+recallScratchPadByIndex	KEYWORD2
+recallScratchPad	KEYWORD2
+setAutoSaveScratchPad	KEYWORD2
+getAutoSaveScratchPad	KEYWORD2
+setHighAlarmTemp	KEYWORD2
+setLowAlarmTemp	KEYWORD2
+getHighAlarmTemp	KEYWORD2
+getLowAlarmTemp	KEYWORD2
+resetAlarmSearch	KEYWORD2
+alarmSearch	KEYWORD2
+hasAlarm	KEYWORD2
+toCelsius	KEYWORD2
+processAlarms	KEYWORD2
+setAlarmHandler	KEYWORD2
+hasAlarmHandler	KEYWORD2
+setUserData	KEYWORD2
+setUserDataByIndex	KEYWORD2
+getUserData	KEYWORD2
+getUserDataByIndex	KEYWORD2
+calculateTemperature	KEYWORD2
+
+#######################################
+# Constants (LITERAL1)
+#######################################
+
+DEVICE_DISCONNECTED_C	LITERAL1
+DEVICE_DISCONNECTED_F	LITERAL1
+DEVICE_DISCONNECTED_RAW	LITERAL1

src/DallasTemperature/library.json

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+{
+  "name": "DallasTemperature",
+  "keywords": "onewire, 1-wire, bus, sensor, temperature",
+  "description": "Arduino Library for Dallas Temperature ICs (DS18B20, DS18S20, DS1822, DS1820)",
+  "repository":
+  {
+    "type": "git",
+    "url": "https://github.com/milesburton/Arduino-Temperature-Control-Library.git"
+  },
+  "authors": 
+  [
+    {
+      "name": "Miles Burton",
+      "email": "miles@mnetcs.com",
+      "url": "http://www.milesburton.com",
+      "maintainer": true
+    },
+    {
+      "name": "Tim Newsome",
+      "email": "nuisance@casualhacker.net"
+    },
+    {
+      "name": "Guil Barros",
+      "email": "gfbarros@bappos.com"
+    },
+    {
+      "name": "Rob Tillaart",
+      "email": "rob.tillaart@gmail.com"
+    }
+  ],
+  "dependencies":
+  {
+    "name": "OneWire",
+    "authors": "Paul Stoffregen",
+    "frameworks": "arduino"
+  },
+  "version": "3.9.0",
+  "frameworks": "arduino",
+  "platforms": "*"
+}

src/DallasTemperature/library.properties

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+name=DallasTemperature
+version=3.9.0
+author=Miles Burton <miles@mnetcs.com>, Tim Newsome <nuisance@casualhacker.net>, Guil Barros <gfbarros@bappos.com>, Rob Tillaart <rob.tillaart@gmail.com>
+maintainer=Miles Burton <miles@mnetcs.com>
+sentence=Arduino Library for Dallas Temperature ICs
+paragraph=Supports DS18B20, DS18S20, DS1822, DS1820
+category=Sensors
+url=https://github.com/milesburton/Arduino-Temperature-Control-Library
+architectures=*
+depends=OneWire

src/OneWire/OneWire.cpp

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+/*
+Copyright (c) 2007, Jim Studt  (original old version - many contributors since)
+
+The latest version of this library may be found at:
+  http://www.pjrc.com/teensy/td_libs_OneWire.html
+
+OneWire has been maintained by Paul Stoffregen (paul@pjrc.com) since
+January 2010.
+
+DO NOT EMAIL for technical support, especially not for ESP chips!
+All project support questions must be posted on public forums
+relevant to the board or chips used.  If using Arduino, post on
+Arduino's forum.  If using ESP, post on the ESP community forums.
+There is ABSOLUTELY NO TECH SUPPORT BY PRIVATE EMAIL!
+
+Github's issue tracker for OneWire should be used only to report
+specific bugs.  DO NOT request project support via Github.  All
+project and tech support questions must be posted on forums, not
+github issues.  If you experience a problem and you are not
+absolutely sure it's an issue with the library, ask on a forum
+first.  Only use github to report issues after experts have
+confirmed the issue is with OneWire rather than your project.
+
+Back in 2010, OneWire was in need of many bug fixes, but had
+been abandoned the original author (Jim Studt).  None of the known
+contributors were interested in maintaining OneWire.  Paul typically
+works on OneWire every 6 to 12 months.  Patches usually wait that
+long.  If anyone is interested in more actively maintaining OneWire,
+please contact Paul (this is pretty much the only reason to use
+private email about OneWire).
+
+OneWire is now very mature code.  No changes other than adding
+definitions for newer hardware support are anticipated.
+
+Version 2.3:
+  Unknown chip fallback mode, Roger Clark
+  Teensy-LC compatibility, Paul Stoffregen
+  Search bug fix, Love Nystrom
+
+Version 2.2:
+  Teensy 3.0 compatibility, Paul Stoffregen, paul@pjrc.com
+  Arduino Due compatibility, http://arduino.cc/forum/index.php?topic=141030
+  Fix DS18B20 example negative temperature
+  Fix DS18B20 example's low res modes, Ken Butcher
+  Improve reset timing, Mark Tillotson
+  Add const qualifiers, Bertrik Sikken
+  Add initial value input to crc16, Bertrik Sikken
+  Add target_search() function, Scott Roberts
+
+Version 2.1:
+  Arduino 1.0 compatibility, Paul Stoffregen
+  Improve temperature example, Paul Stoffregen
+  DS250x_PROM example, Guillermo Lovato
+  PIC32 (chipKit) compatibility, Jason Dangel, dangel.jason AT gmail.com
+  Improvements from Glenn Trewitt:
+  - crc16() now works
+  - check_crc16() does all of calculation/checking work.
+  - Added read_bytes() and write_bytes(), to reduce tedious loops.
+  - Added ds2408 example.
+  Delete very old, out-of-date readme file (info is here)
+
+Version 2.0: Modifications by Paul Stoffregen, January 2010:
+http://www.pjrc.com/teensy/td_libs_OneWire.html
+  Search fix from Robin James
+    http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1238032295/27#27
+  Use direct optimized I/O in all cases
+  Disable interrupts during timing critical sections
+    (this solves many random communication errors)
+  Disable interrupts during read-modify-write I/O
+  Reduce RAM consumption by eliminating unnecessary
+    variables and trimming many to 8 bits
+  Optimize both crc8 - table version moved to flash
+
+Modified to work with larger numbers of devices - avoids loop.
+Tested in Arduino 11 alpha with 12 sensors.
+26 Sept 2008 -- Robin James
+http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1238032295/27#27
+
+Updated to work with arduino-0008 and to include skip() as of
+2007/07/06. --RJL20
+
+Modified to calculate the 8-bit CRC directly, avoiding the need for
+the 256-byte lookup table to be loaded in RAM.  Tested in arduino-0010
+-- Tom Pollard, Jan 23, 2008
+
+Jim Studt's original library was modified by Josh Larios.
+
+Tom Pollard, pollard@alum.mit.edu, contributed around May 20, 2008
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Much of the code was inspired by Derek Yerger's code, though I don't
+think much of that remains.  In any event that was..
+    (copyleft) 2006 by Derek Yerger - Free to distribute freely.
+
+The CRC code was excerpted and inspired by the Dallas Semiconductor
+sample code bearing this copyright.
+//---------------------------------------------------------------------------
+// Copyright (C) 2000 Dallas Semiconductor Corporation, All Rights Reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY,  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+// IN NO EVENT SHALL DALLAS SEMICONDUCTOR BE LIABLE FOR ANY CLAIM, DAMAGES
+// OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+// OTHER DEALINGS IN THE SOFTWARE.
+//
+// Except as contained in this notice, the name of Dallas Semiconductor
+// shall not be used except as stated in the Dallas Semiconductor
+// Branding Policy.
+//--------------------------------------------------------------------------
+*/
+
+#include <Arduino.h>
+#include "OneWire.h"
+#include "util/OneWire_direct_gpio.h"
+
+
+void OneWire::begin(uint8_t pin)
+{
+	pinMode(pin, INPUT);
+	bitmask = PIN_TO_BITMASK(pin);
+	baseReg = PIN_TO_BASEREG(pin);
+#if ONEWIRE_SEARCH
+	reset_search();
+#endif
+}
+
+
+// Perform the onewire reset function.  We will wait up to 250uS for
+// the bus to come high, if it doesn't then it is broken or shorted
+// and we return a 0;
+//
+// Returns 1 if a device asserted a presence pulse, 0 otherwise.
+//
+uint8_t OneWire::reset(void)
+{
+	IO_REG_TYPE mask IO_REG_MASK_ATTR = bitmask;
+	volatile IO_REG_TYPE *reg IO_REG_BASE_ATTR = baseReg;
+	uint8_t r;
+	uint8_t retries = 125;
+
+	noInterrupts();
+	DIRECT_MODE_INPUT(reg, mask);
+	interrupts();
+	// wait until the wire is high... just in case
+	do {
+		if (--retries == 0) return 0;
+		delayMicroseconds(2);
+	} while ( !DIRECT_READ(reg, mask));
+
+	noInterrupts();
+	DIRECT_WRITE_LOW(reg, mask);
+	DIRECT_MODE_OUTPUT(reg, mask);	// drive output low
+	interrupts();
+	delayMicroseconds(480);
+	noInterrupts();
+	DIRECT_MODE_INPUT(reg, mask);	// allow it to float
+	delayMicroseconds(70);
+	r = !DIRECT_READ(reg, mask);
+	interrupts();
+	delayMicroseconds(410);
+	return r;
+}
+
+//
+// Write a bit. Port and bit is used to cut lookup time and provide
+// more certain timing.
+//
+void OneWire::write_bit(uint8_t v)
+{
+	IO_REG_TYPE mask IO_REG_MASK_ATTR = bitmask;
+	volatile IO_REG_TYPE *reg IO_REG_BASE_ATTR = baseReg;
+
+	if (v & 1) {
+		noInterrupts();
+		DIRECT_WRITE_LOW(reg, mask);
+		DIRECT_MODE_OUTPUT(reg, mask);	// drive output low
+		delayMicroseconds(10);
+		DIRECT_WRITE_HIGH(reg, mask);	// drive output high
+		interrupts();
+		delayMicroseconds(55);
+	} else {
+		noInterrupts();
+		DIRECT_WRITE_LOW(reg, mask);
+		DIRECT_MODE_OUTPUT(reg, mask);	// drive output low
+		delayMicroseconds(65);
+		DIRECT_WRITE_HIGH(reg, mask);	// drive output high
+		interrupts();
+		delayMicroseconds(5);
+	}
+}
+
+//
+// Read a bit. Port and bit is used to cut lookup time and provide
+// more certain timing.
+//
+uint8_t OneWire::read_bit(void)
+{
+	IO_REG_TYPE mask IO_REG_MASK_ATTR = bitmask;
+	volatile IO_REG_TYPE *reg IO_REG_BASE_ATTR = baseReg;
+	uint8_t r;
+
+	noInterrupts();
+	DIRECT_MODE_OUTPUT(reg, mask);
+	DIRECT_WRITE_LOW(reg, mask);
+	delayMicroseconds(3);
+	DIRECT_MODE_INPUT(reg, mask);	// let pin float, pull up will raise
+	delayMicroseconds(10);
+	r = DIRECT_READ(reg, mask);
+	interrupts();
+	delayMicroseconds(53);
+	return r;
+}
+
+//
+// Write a byte. The writing code uses the active drivers to raise the
+// pin high, if you need power after the write (e.g. DS18S20 in
+// parasite power mode) then set 'power' to 1, otherwise the pin will
+// go tri-state at the end of the write to avoid heating in a short or
+// other mishap.
+//
+void OneWire::write(uint8_t v, uint8_t power /* = 0 */) {
+    uint8_t bitMask;
+
+    for (bitMask = 0x01; bitMask; bitMask <<= 1) {
+	OneWire::write_bit( (bitMask & v)?1:0);
+    }
+    if ( !power) {
+	noInterrupts();
+	DIRECT_MODE_INPUT(baseReg, bitmask);
+	DIRECT_WRITE_LOW(baseReg, bitmask);
+	interrupts();
+    }
+}
+
+void OneWire::write_bytes(const uint8_t *buf, uint16_t count, bool power /* = 0 */) {
+  for (uint16_t i = 0 ; i < count ; i++)
+    write(buf[i]);
+  if (!power) {
+    noInterrupts();
+    DIRECT_MODE_INPUT(baseReg, bitmask);
+    DIRECT_WRITE_LOW(baseReg, bitmask);
+    interrupts();
+  }
+}
+
+//
+// Read a byte
+//
+uint8_t OneWire::read() {
+    uint8_t bitMask;
+    uint8_t r = 0;
+
+    for (bitMask = 0x01; bitMask; bitMask <<= 1) {
+	if ( OneWire::read_bit()) r |= bitMask;
+    }
+    return r;
+}
+
+void OneWire::read_bytes(uint8_t *buf, uint16_t count) {
+  for (uint16_t i = 0 ; i < count ; i++)
+    buf[i] = read();
+}
+
+//
+// Do a ROM select
+//
+void OneWire::select(const uint8_t rom[8])
+{
+    uint8_t i;
+
+    write(0x55);           // Choose ROM
+
+    for (i = 0; i < 8; i++) write(rom[i]);
+}
+
+//
+// Do a ROM skip
+//
+void OneWire::skip()
+{
+    write(0xCC);           // Skip ROM
+}
+
+void OneWire::depower()
+{
+	noInterrupts();
+	DIRECT_MODE_INPUT(baseReg, bitmask);
+	interrupts();
+}
+
+#if ONEWIRE_SEARCH
+
+//
+// You need to use this function to start a search again from the beginning.
+// You do not need to do it for the first search, though you could.
+//
+void OneWire::reset_search()
+{
+  // reset the search state
+  LastDiscrepancy = 0;
+  LastDeviceFlag = false;
+  LastFamilyDiscrepancy = 0;
+  for(int i = 7; ; i--) {
+    ROM_NO[i] = 0;
+    if ( i == 0) break;
+  }
+}
+
+// Setup the search to find the device type 'family_code' on the next call
+// to search(*newAddr) if it is present.
+//
+void OneWire::target_search(uint8_t family_code)
+{
+   // set the search state to find SearchFamily type devices
+   ROM_NO[0] = family_code;
+   for (uint8_t i = 1; i < 8; i++)
+      ROM_NO[i] = 0;
+   LastDiscrepancy = 64;
+   LastFamilyDiscrepancy = 0;
+   LastDeviceFlag = false;
+}
+
+//
+// Perform a search. If this function returns a '1' then it has
+// enumerated the next device and you may retrieve the ROM from the
+// OneWire::address variable. If there are no devices, no further
+// devices, or something horrible happens in the middle of the
+// enumeration then a 0 is returned.  If a new device is found then
+// its address is copied to newAddr.  Use OneWire::reset_search() to
+// start over.
+//
+// --- Replaced by the one from the Dallas Semiconductor web site ---
+//--------------------------------------------------------------------------
+// Perform the 1-Wire Search Algorithm on the 1-Wire bus using the existing
+// search state.
+// Return TRUE  : device found, ROM number in ROM_NO buffer
+//        FALSE : device not found, end of search
+//
+bool OneWire::search(uint8_t *newAddr, bool search_mode /* = true */)
+{
+   uint8_t id_bit_number;
+   uint8_t last_zero, rom_byte_number;
+   bool    search_result;
+   uint8_t id_bit, cmp_id_bit;
+
+   unsigned char rom_byte_mask, search_direction;
+
+   // initialize for search
+   id_bit_number = 1;
+   last_zero = 0;
+   rom_byte_number = 0;
+   rom_byte_mask = 1;
+   search_result = false;
+
+   // if the last call was not the last one
+   if (!LastDeviceFlag) {
+      // 1-Wire reset
+      if (!reset()) {
+         // reset the search
+         LastDiscrepancy = 0;
+         LastDeviceFlag = false;
+         LastFamilyDiscrepancy = 0;
+         return false;
+      }
+
+      // issue the search command
+      if (search_mode == true) {
+        write(0xF0);   // NORMAL SEARCH
+      } else {
+        write(0xEC);   // CONDITIONAL SEARCH
+      }
+
+      // loop to do the search
+      do
+      {
+         // read a bit and its complement
+         id_bit = read_bit();
+         cmp_id_bit = read_bit();
+
+         // check for no devices on 1-wire
+         if ((id_bit == 1) && (cmp_id_bit == 1)) {
+            break;
+         } else {
+            // all devices coupled have 0 or 1
+            if (id_bit != cmp_id_bit) {
+               search_direction = id_bit;  // bit write value for search
+            } else {
+               // if this discrepancy if before the Last Discrepancy
+               // on a previous next then pick the same as last time
+               if (id_bit_number < LastDiscrepancy) {
+                  search_direction = ((ROM_NO[rom_byte_number] & rom_byte_mask) > 0);
+               } else {
+                  // if equal to last pick 1, if not then pick 0
+                  search_direction = (id_bit_number == LastDiscrepancy);
+               }
+               // if 0 was picked then record its position in LastZero
+               if (search_direction == 0) {
+                  last_zero = id_bit_number;
+
+                  // check for Last discrepancy in family
+                  if (last_zero < 9)
+                     LastFamilyDiscrepancy = last_zero;
+               }
+            }
+
+            // set or clear the bit in the ROM byte rom_byte_number
+            // with mask rom_byte_mask
+            if (search_direction == 1)
+              ROM_NO[rom_byte_number] |= rom_byte_mask;
+            else
+              ROM_NO[rom_byte_number] &= ~rom_byte_mask;
+
+            // serial number search direction write bit
+            write_bit(search_direction);
+
+            // increment the byte counter id_bit_number
+            // and shift the mask rom_byte_mask
+            id_bit_number++;
+            rom_byte_mask <<= 1;
+
+            // if the mask is 0 then go to new SerialNum byte rom_byte_number and reset mask
+            if (rom_byte_mask == 0) {
+                rom_byte_number++;
+                rom_byte_mask = 1;
+            }
+         }
+      }
+      while(rom_byte_number < 8);  // loop until through all ROM bytes 0-7
+
+      // if the search was successful then
+      if (!(id_bit_number < 65)) {
+         // search successful so set LastDiscrepancy,LastDeviceFlag,search_result
+         LastDiscrepancy = last_zero;
+
+         // check for last device
+         if (LastDiscrepancy == 0) {
+            LastDeviceFlag = true;
+         }
+         search_result = true;
+      }
+   }
+
+   // if no device found then reset counters so next 'search' will be like a first
+   if (!search_result || !ROM_NO[0]) {
+      LastDiscrepancy = 0;
+      LastDeviceFlag = false;
+      LastFamilyDiscrepancy = 0;
+      search_result = false;
+   } else {
+      for (int i = 0; i < 8; i++) newAddr[i] = ROM_NO[i];
+   }
+   return search_result;
+  }
+
+#endif
+
+#if ONEWIRE_CRC
+// The 1-Wire CRC scheme is described in Maxim Application Note 27:
+// "Understanding and Using Cyclic Redundancy Checks with Maxim iButton Products"
+//
+
+#if ONEWIRE_CRC8_TABLE
+// Dow-CRC using polynomial X^8 + X^5 + X^4 + X^0
+// Tiny 2x16 entry CRC table created by Arjen Lentz
+// See http://lentz.com.au/blog/calculating-crc-with-a-tiny-32-entry-lookup-table
+static const uint8_t PROGMEM dscrc2x16_table[] = {
+	0x00, 0x5E, 0xBC, 0xE2, 0x61, 0x3F, 0xDD, 0x83,
+	0xC2, 0x9C, 0x7E, 0x20, 0xA3, 0xFD, 0x1F, 0x41,
+	0x00, 0x9D, 0x23, 0xBE, 0x46, 0xDB, 0x65, 0xF8,
+	0x8C, 0x11, 0xAF, 0x32, 0xCA, 0x57, 0xE9, 0x74
+};
+
+// Compute a Dallas Semiconductor 8 bit CRC. These show up in the ROM
+// and the registers.  (Use tiny 2x16 entry CRC table)
+uint8_t OneWire::crc8(const uint8_t *addr, uint8_t len)
+{
+	uint8_t crc = 0;
+
+	while (len--) {
+		crc = *addr++ ^ crc;  // just re-using crc as intermediate
+		crc = pgm_read_byte(dscrc2x16_table + (crc & 0x0f)) ^
+		pgm_read_byte(dscrc2x16_table + 16 + ((crc >> 4) & 0x0f));
+	}
+
+	return crc;
+}
+#else
+//
+// Compute a Dallas Semiconductor 8 bit CRC directly.
+// this is much slower, but a little smaller, than the lookup table.
+//
+uint8_t OneWire::crc8(const uint8_t *addr, uint8_t len)
+{
+	uint8_t crc = 0;
+
+	while (len--) {
+#if defined(__AVR__)
+		crc = _crc_ibutton_update(crc, *addr++);
+#else
+		uint8_t inbyte = *addr++;
+		for (uint8_t i = 8; i; i--) {
+			uint8_t mix = (crc ^ inbyte) & 0x01;
+			crc >>= 1;
+			if (mix) crc ^= 0x8C;
+			inbyte >>= 1;
+		}
+#endif
+	}
+	return crc;
+}
+#endif
+
+#if ONEWIRE_CRC16
+bool OneWire::check_crc16(const uint8_t* input, uint16_t len, const uint8_t* inverted_crc, uint16_t crc)
+{
+    crc = ~crc16(input, len, crc);
+    return (crc & 0xFF) == inverted_crc[0] && (crc >> 8) == inverted_crc[1];
+}
+
+uint16_t OneWire::crc16(const uint8_t* input, uint16_t len, uint16_t crc)
+{
+#if defined(__AVR__)
+    for (uint16_t i = 0 ; i < len ; i++) {
+        crc = _crc16_update(crc, input[i]);
+    }
+#else
+    static const uint8_t oddparity[16] =
+        { 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0 };
+
+    for (uint16_t i = 0 ; i < len ; i++) {
+      // Even though we're just copying a byte from the input,
+      // we'll be doing 16-bit computation with it.
+      uint16_t cdata = input[i];
+      cdata = (cdata ^ crc) & 0xff;
+      crc >>= 8;
+
+      if (oddparity[cdata & 0x0F] ^ oddparity[cdata >> 4])
+          crc ^= 0xC001;
+
+      cdata <<= 6;
+      crc ^= cdata;
+      cdata <<= 1;
+      crc ^= cdata;
+    }
+#endif
+    return crc;
+}
+#endif
+
+#endif

src/OneWire/OneWire.h

@@ -0,0 +1,182 @@
+#ifndef OneWire_h
+#define OneWire_h
+
+#ifdef __cplusplus
+
+#include <stdint.h>
+
+#if defined(__AVR__)
+#include <util/crc16.h>
+#endif
+
+#if ARDUINO >= 100
+#include <Arduino.h>       // for delayMicroseconds, digitalPinToBitMask, etc
+#else
+#include "WProgram.h"      // for delayMicroseconds
+#include "pins_arduino.h"  // for digitalPinToBitMask, etc
+#endif
+
+// You can exclude certain features from OneWire.  In theory, this
+// might save some space.  In practice, the compiler automatically
+// removes unused code (technically, the linker, using -fdata-sections
+// and -ffunction-sections when compiling, and Wl,--gc-sections
+// when linking), so most of these will not result in any code size
+// reduction.  Well, unless you try to use the missing features
+// and redesign your program to not need them!  ONEWIRE_CRC8_TABLE
+// is the exception, because it selects a fast but large algorithm
+// or a small but slow algorithm.
+
+// you can exclude onewire_search by defining that to 0
+#ifndef ONEWIRE_SEARCH
+#define ONEWIRE_SEARCH 1
+#endif
+
+// You can exclude CRC checks altogether by defining this to 0
+#ifndef ONEWIRE_CRC
+#define ONEWIRE_CRC 1
+#endif
+
+// Select the table-lookup method of computing the 8-bit CRC
+// by setting this to 1.  The lookup table enlarges code size by
+// about 250 bytes.  It does NOT consume RAM (but did in very
+// old versions of OneWire).  If you disable this, a slower
+// but very compact algorithm is used.
+#ifndef ONEWIRE_CRC8_TABLE
+#define ONEWIRE_CRC8_TABLE 1
+#endif
+
+// You can allow 16-bit CRC checks by defining this to 1
+// (Note that ONEWIRE_CRC must also be 1.)
+#ifndef ONEWIRE_CRC16
+#define ONEWIRE_CRC16 1
+#endif
+
+// Board-specific macros for direct GPIO
+#include "util/OneWire_direct_regtype.h"
+
+class OneWire
+{
+  private:
+    IO_REG_TYPE bitmask;
+    volatile IO_REG_TYPE *baseReg;
+
+#if ONEWIRE_SEARCH
+    // global search state
+    unsigned char ROM_NO[8];
+    uint8_t LastDiscrepancy;
+    uint8_t LastFamilyDiscrepancy;
+    bool LastDeviceFlag;
+#endif
+
+  public:
+    OneWire() { }
+    OneWire(uint8_t pin) { begin(pin); }
+    void begin(uint8_t pin);
+
+    // Perform a 1-Wire reset cycle. Returns 1 if a device responds
+    // with a presence pulse.  Returns 0 if there is no device or the
+    // bus is shorted or otherwise held low for more than 250uS
+    uint8_t reset(void);
+
+    // Issue a 1-Wire rom select command, you do the reset first.
+    void select(const uint8_t rom[8]);
+
+    // Issue a 1-Wire rom skip command, to address all on bus.
+    void skip(void);
+
+    // Write a byte. If 'power' is one then the wire is held high at
+    // the end for parasitically powered devices. You are responsible
+    // for eventually depowering it by calling depower() or doing
+    // another read or write.
+    void write(uint8_t v, uint8_t power = 0);
+
+    void write_bytes(const uint8_t *buf, uint16_t count, bool power = 0);
+
+    // Read a byte.
+    uint8_t read(void);
+
+    void read_bytes(uint8_t *buf, uint16_t count);
+
+    // Write a bit. The bus is always left powered at the end, see
+    // note in write() about that.
+    void write_bit(uint8_t v);
+
+    // Read a bit.
+    uint8_t read_bit(void);
+
+    // Stop forcing power onto the bus. You only need to do this if
+    // you used the 'power' flag to write() or used a write_bit() call
+    // and aren't about to do another read or write. You would rather
+    // not leave this powered if you don't have to, just in case
+    // someone shorts your bus.
+    void depower(void);
+
+#if ONEWIRE_SEARCH
+    // Clear the search state so that if will start from the beginning again.
+    void reset_search();
+
+    // Setup the search to find the device type 'family_code' on the next call
+    // to search(*newAddr) if it is present.
+    void target_search(uint8_t family_code);
+
+    // Look for the next device. Returns 1 if a new address has been
+    // returned. A zero might mean that the bus is shorted, there are
+    // no devices, or you have already retrieved all of them.  It
+    // might be a good idea to check the CRC to make sure you didn't
+    // get garbage.  The order is deterministic. You will always get
+    // the same devices in the same order.
+    bool search(uint8_t *newAddr, bool search_mode = true);
+#endif
+
+#if ONEWIRE_CRC
+    // Compute a Dallas Semiconductor 8 bit CRC, these are used in the
+    // ROM and scratchpad registers.
+    static uint8_t crc8(const uint8_t *addr, uint8_t len);
+
+#if ONEWIRE_CRC16
+    // Compute the 1-Wire CRC16 and compare it against the received CRC.
+    // Example usage (reading a DS2408):
+    //    // Put everything in a buffer so we can compute the CRC easily.
+    //    uint8_t buf[13];
+    //    buf[0] = 0xF0;    // Read PIO Registers
+    //    buf[1] = 0x88;    // LSB address
+    //    buf[2] = 0x00;    // MSB address
+    //    WriteBytes(net, buf, 3);    // Write 3 cmd bytes
+    //    ReadBytes(net, buf+3, 10);  // Read 6 data bytes, 2 0xFF, 2 CRC16
+    //    if (!CheckCRC16(buf, 11, &buf[11])) {
+    //        // Handle error.
+    //    }     
+    //          
+    // @param input - Array of bytes to checksum.
+    // @param len - How many bytes to use.
+    // @param inverted_crc - The two CRC16 bytes in the received data.
+    //                       This should just point into the received data,
+    //                       *not* at a 16-bit integer.
+    // @param crc - The crc starting value (optional)
+    // @return True, iff the CRC matches.
+    static bool check_crc16(const uint8_t* input, uint16_t len, const uint8_t* inverted_crc, uint16_t crc = 0);
+
+    // Compute a Dallas Semiconductor 16 bit CRC.  This is required to check
+    // the integrity of data received from many 1-Wire devices.  Note that the
+    // CRC computed here is *not* what you'll get from the 1-Wire network,
+    // for two reasons:
+    //   1) The CRC is transmitted bitwise inverted.
+    //   2) Depending on the endian-ness of your processor, the binary
+    //      representation of the two-byte return value may have a different
+    //      byte order than the two bytes you get from 1-Wire.
+    // @param input - Array of bytes to checksum.
+    // @param len - How many bytes to use.
+    // @param crc - The crc starting value (optional)
+    // @return The CRC16, as defined by Dallas Semiconductor.
+    static uint16_t crc16(const uint8_t* input, uint16_t len, uint16_t crc = 0);
+#endif
+#endif
+};
+
+// Prevent this name from leaking into Arduino sketches
+#ifdef IO_REG_TYPE
+#undef IO_REG_TYPE
+#endif
+
+#endif // __cplusplus
+#endif // OneWire_h

src/OneWire/docs/issue_template.md

@@ -0,0 +1,64 @@
+Please use this form only to report code defects or bugs.
+
+For any question, even questions directly pertaining to this code, post your question on the forums related to the board you are using.
+
+Arduino: forum.arduino.cc
+Teensy: forum.pjrc.com
+ESP8266: www.esp8266.com
+ESP32: www.esp32.com
+Adafruit Feather/Metro/Trinket: forums.adafruit.com
+Particle Photon: community.particle.io
+
+If you are experiencing trouble but not certain of the cause, or need help using this code, ask on the appropriate forum.  This is not the place to ask for support or help, even directly related to this code.  Only use this form you are certain you have discovered a defect in this code!
+
+Please verify the problem occurs when using the very latest version, using the newest version of Arduino and any other related software.
+
+
+----------------------------- Remove above -----------------------------
+
+
+
+### Description
+
+Describe your problem.
+
+
+
+### Steps To Reproduce Problem
+
+Please give detailed instructions needed for anyone to attempt to reproduce the problem.
+
+
+
+### Hardware & Software
+
+Board
+Shields / modules used
+Arduino IDE version
+Teensyduino version (if using Teensy)
+Version info & package name (from Tools > Boards > Board Manager)
+Operating system & version
+Any other software or hardware?
+
+
+### Arduino Sketch
+
+```cpp
+// Change the code below by your sketch (please try to give the smallest code which demonstrates the problem)
+#include <Arduino.h>
+
+// libraries: give links/details so anyone can compile your code for the same result
+
+void setup() {
+}
+
+void loop() {
+}
+```
+
+
+### Errors or Incorrect Output
+
+If you see any errors or incorrect output, please show it here.  Please use copy & paste to give an exact copy of the message.  Details matter, so please show (not merely describe) the actual message or error exactly as it appears.
+
+

src/OneWire/keywords.txt

@@ -0,0 +1,38 @@
+#######################################
+# Syntax Coloring Map For OneWire
+#######################################
+
+#######################################
+# Datatypes (KEYWORD1)
+#######################################
+
+OneWire	KEYWORD1
+
+#######################################
+# Methods and Functions (KEYWORD2)
+#######################################
+
+reset	KEYWORD2
+write_bit	KEYWORD2
+read_bit	KEYWORD2
+write	KEYWORD2
+write_bytes	KEYWORD2
+read	KEYWORD2
+read_bytes	KEYWORD2
+select	KEYWORD2
+skip	KEYWORD2
+depower	KEYWORD2
+reset_search	KEYWORD2
+search	KEYWORD2
+crc8	KEYWORD2
+crc16	KEYWORD2
+check_crc16	KEYWORD2
+
+#######################################
+# Instances (KEYWORD2)
+#######################################
+
+
+#######################################
+# Constants (LITERAL1)
+#######################################

src/OneWire/library.json

@@ -0,0 +1,61 @@
+{
+    "name": "OneWire",
+    "description": "Control 1-Wire protocol (DS18S20, DS18B20, DS2408 and etc)",
+    "keywords": "onewire, 1-wire, bus, sensor, temperature, ibutton",
+    "authors": [
+        {
+            "name": "Paul Stoffregen",
+            "email": "paul@pjrc.com",
+            "url": "http://www.pjrc.com",
+            "maintainer": true
+        },
+        {
+            "name": "Jim Studt"
+        },
+        {
+            "name": "Tom Pollard",
+            "email": "pollard@alum.mit.edu"
+        },
+        {
+            "name": "Derek Yerger"
+        },
+        {
+            "name": "Josh Larios"
+        },
+        {
+            "name": "Robin James"
+        },
+        {
+            "name": "Glenn Trewitt"
+        },
+        {
+            "name": "Jason Dangel",
+            "email": "dangel.jason AT gmail.com"
+        },
+        {
+            "name": "Guillermo Lovato"
+        },
+        {
+            "name": "Ken Butcher"
+        },
+        {
+            "name": "Mark Tillotson"
+        },
+        {
+            "name": "Bertrik Sikken"
+        },
+        {
+            "name": "Scott Roberts"
+        }
+    ],
+    "repository": {
+        "type": "git",
+        "url": "https://github.com/PaulStoffregen/OneWire"
+    },
+    "version": "2.3.5",
+    "homepage": "https://www.pjrc.com/teensy/td_libs_OneWire.html",
+    "frameworks": "Arduino",
+    "examples": [
+        "examples/*/*.pde"
+    ]
+}

src/OneWire/library.properties

@@ -0,0 +1,10 @@
+name=OneWire
+version=2.3.5
+author=Jim Studt, Tom Pollard, Robin James, Glenn Trewitt, Jason Dangel, Guillermo Lovato, Paul Stoffregen, Scott Roberts, Bertrik Sikken, Mark Tillotson, Ken Butcher, Roger Clark, Love Nystrom
+maintainer=Paul Stoffregen
+sentence=Access 1-wire temperature sensors, memory and other chips.
+paragraph=
+category=Communication
+url=http://www.pjrc.com/teensy/td_libs_OneWire.html
+architectures=*
+

src/OneWire/util/OneWire_direct_gpio.h

@@ -0,0 +1,420 @@
+#ifndef OneWire_Direct_GPIO_h
+#define OneWire_Direct_GPIO_h
+
+// This header should ONLY be included by OneWire.cpp.  These defines are
+// meant to be private, used within OneWire.cpp, but not exposed to Arduino
+// sketches or other libraries which may include OneWire.h.
+
+#include <stdint.h>
+
+// Platform specific I/O definitions
+
+#if defined(__AVR__)
+#define PIN_TO_BASEREG(pin)             (portInputRegister(digitalPinToPort(pin)))
+#define PIN_TO_BITMASK(pin)             (digitalPinToBitMask(pin))
+#define IO_REG_TYPE uint8_t
+#define IO_REG_BASE_ATTR asm("r30")
+#define IO_REG_MASK_ATTR
+#if defined(__AVR_ATmega4809__)
+#define DIRECT_READ(base, mask)         (((*(base)) & (mask)) ? 1 : 0)
+#define DIRECT_MODE_INPUT(base, mask)   ((*((base)-8)) &= ~(mask))
+#define DIRECT_MODE_OUTPUT(base, mask)  ((*((base)-8)) |= (mask))
+#define DIRECT_WRITE_LOW(base, mask)    ((*((base)-4)) &= ~(mask))
+#define DIRECT_WRITE_HIGH(base, mask)   ((*((base)-4)) |= (mask))
+#else
+#define DIRECT_READ(base, mask)         (((*(base)) & (mask)) ? 1 : 0)
+#define DIRECT_MODE_INPUT(base, mask)   ((*((base)+1)) &= ~(mask))
+#define DIRECT_MODE_OUTPUT(base, mask)  ((*((base)+1)) |= (mask))
+#define DIRECT_WRITE_LOW(base, mask)    ((*((base)+2)) &= ~(mask))
+#define DIRECT_WRITE_HIGH(base, mask)   ((*((base)+2)) |= (mask))
+#endif
+
+#elif defined(__MK20DX128__) || defined(__MK20DX256__) || defined(__MK66FX1M0__) || defined(__MK64FX512__)
+#define PIN_TO_BASEREG(pin)             (portOutputRegister(pin))
+#define PIN_TO_BITMASK(pin)             (1)
+#define IO_REG_TYPE uint8_t
+#define IO_REG_BASE_ATTR
+#define IO_REG_MASK_ATTR __attribute__ ((unused))
+#define DIRECT_READ(base, mask)         (*((base)+512))
+#define DIRECT_MODE_INPUT(base, mask)   (*((base)+640) = 0)
+#define DIRECT_MODE_OUTPUT(base, mask)  (*((base)+640) = 1)
+#define DIRECT_WRITE_LOW(base, mask)    (*((base)+256) = 1)
+#define DIRECT_WRITE_HIGH(base, mask)   (*((base)+128) = 1)
+
+#elif defined(__MKL26Z64__)
+#define PIN_TO_BASEREG(pin)             (portOutputRegister(pin))
+#define PIN_TO_BITMASK(pin)             (digitalPinToBitMask(pin))
+#define IO_REG_TYPE uint8_t
+#define IO_REG_BASE_ATTR
+#define IO_REG_MASK_ATTR
+#define DIRECT_READ(base, mask)         ((*((base)+16) & (mask)) ? 1 : 0)
+#define DIRECT_MODE_INPUT(base, mask)   (*((base)+20) &= ~(mask))
+#define DIRECT_MODE_OUTPUT(base, mask)  (*((base)+20) |= (mask))
+#define DIRECT_WRITE_LOW(base, mask)    (*((base)+8) = (mask))
+#define DIRECT_WRITE_HIGH(base, mask)   (*((base)+4) = (mask))
+
+#elif defined(__IMXRT1052__) || defined(__IMXRT1062__)
+#define PIN_TO_BASEREG(pin)             (portOutputRegister(pin))
+#define PIN_TO_BITMASK(pin)             (digitalPinToBitMask(pin))
+#define IO_REG_TYPE uint32_t
+#define IO_REG_BASE_ATTR
+#define IO_REG_MASK_ATTR
+#define DIRECT_READ(base, mask)         ((*((base)+2) & (mask)) ? 1 : 0)
+#define DIRECT_MODE_INPUT(base, mask)   (*((base)+1) &= ~(mask))
+#define DIRECT_MODE_OUTPUT(base, mask)  (*((base)+1) |= (mask))
+#define DIRECT_WRITE_LOW(base, mask)    (*((base)+34) = (mask))
+#define DIRECT_WRITE_HIGH(base, mask)   (*((base)+33) = (mask))
+
+#elif defined(__SAM3X8E__) || defined(__SAM3A8C__) || defined(__SAM3A4C__)
+// Arduino 1.5.1 may have a bug in delayMicroseconds() on Arduino Due.
+// http://arduino.cc/forum/index.php/topic,141030.msg1076268.html#msg1076268
+// If you have trouble with OneWire on Arduino Due, please check the
+// status of delayMicroseconds() before reporting a bug in OneWire!
+#define PIN_TO_BASEREG(pin)             (&(digitalPinToPort(pin)->PIO_PER))
+#define PIN_TO_BITMASK(pin)             (digitalPinToBitMask(pin))
+#define IO_REG_TYPE uint32_t
+#define IO_REG_BASE_ATTR
+#define IO_REG_MASK_ATTR
+#define DIRECT_READ(base, mask)         (((*((base)+15)) & (mask)) ? 1 : 0)
+#define DIRECT_MODE_INPUT(base, mask)   ((*((base)+5)) = (mask))
+#define DIRECT_MODE_OUTPUT(base, mask)  ((*((base)+4)) = (mask))
+#define DIRECT_WRITE_LOW(base, mask)    ((*((base)+13)) = (mask))
+#define DIRECT_WRITE_HIGH(base, mask)   ((*((base)+12)) = (mask))
+#ifndef PROGMEM
+#define PROGMEM
+#endif
+#ifndef pgm_read_byte
+#define pgm_read_byte(addr) (*(const uint8_t *)(addr))
+#endif
+
+#elif defined(__PIC32MX__)
+#define PIN_TO_BASEREG(pin)             (portModeRegister(digitalPinToPort(pin)))
+#define PIN_TO_BITMASK(pin)             (digitalPinToBitMask(pin))
+#define IO_REG_TYPE uint32_t
+#define IO_REG_BASE_ATTR
+#define IO_REG_MASK_ATTR
+#define DIRECT_READ(base, mask)         (((*(base+4)) & (mask)) ? 1 : 0)  //PORTX + 0x10
+#define DIRECT_MODE_INPUT(base, mask)   ((*(base+2)) = (mask))            //TRISXSET + 0x08
+#define DIRECT_MODE_OUTPUT(base, mask)  ((*(base+1)) = (mask))            //TRISXCLR + 0x04
+#define DIRECT_WRITE_LOW(base, mask)    ((*(base+8+1)) = (mask))          //LATXCLR  + 0x24
+#define DIRECT_WRITE_HIGH(base, mask)   ((*(base+8+2)) = (mask))          //LATXSET + 0x28
+
+#elif defined(ARDUINO_ARCH_ESP8266)
+// Special note: I depend on the ESP community to maintain these definitions and
+// submit good pull requests.  I can not answer any ESP questions or help you
+// resolve any problems related to ESP chips.  Please do not contact me and please
+// DO NOT CREATE GITHUB ISSUES for ESP support.  All ESP questions must be asked
+// on ESP community forums.
+#define PIN_TO_BASEREG(pin)             ((volatile uint32_t*) GPO)
+#define PIN_TO_BITMASK(pin)             (1 << pin)
+#define IO_REG_TYPE uint32_t
+#define IO_REG_BASE_ATTR
+#define IO_REG_MASK_ATTR
+#define DIRECT_READ(base, mask)         ((GPI & (mask)) ? 1 : 0)    //GPIO_IN_ADDRESS
+#define DIRECT_MODE_INPUT(base, mask)   (GPE &= ~(mask))            //GPIO_ENABLE_W1TC_ADDRESS
+#define DIRECT_MODE_OUTPUT(base, mask)  (GPE |= (mask))             //GPIO_ENABLE_W1TS_ADDRESS
+#define DIRECT_WRITE_LOW(base, mask)    (GPOC = (mask))             //GPIO_OUT_W1TC_ADDRESS
+#define DIRECT_WRITE_HIGH(base, mask)   (GPOS = (mask))             //GPIO_OUT_W1TS_ADDRESS
+
+#elif defined(ARDUINO_ARCH_ESP32)
+#include <driver/rtc_io.h>
+#define PIN_TO_BASEREG(pin)             (0)
+#define PIN_TO_BITMASK(pin)             (pin)
+#define IO_REG_TYPE uint32_t
+#define IO_REG_BASE_ATTR
+#define IO_REG_MASK_ATTR
+
+static inline __attribute__((always_inline))
+IO_REG_TYPE directRead(IO_REG_TYPE pin)
+{
+    if ( pin < 32 )
+        return (GPIO.in >> pin) & 0x1;
+    else if ( pin < 40 )
+        return (GPIO.in1.val >> (pin - 32)) & 0x1;
+
+    return 0;
+}
+
+static inline __attribute__((always_inline))
+void directWriteLow(IO_REG_TYPE pin)
+{
+    if ( pin < 32 )
+        GPIO.out_w1tc = ((uint32_t)1 << pin);
+    else if ( pin < 34 )
+        GPIO.out1_w1tc.val = ((uint32_t)1 << (pin - 32));
+}
+
+static inline __attribute__((always_inline))
+void directWriteHigh(IO_REG_TYPE pin)
+{
+    if ( pin < 32 )
+        GPIO.out_w1ts = ((uint32_t)1 << pin);
+    else if ( pin < 34 )
+        GPIO.out1_w1ts.val = ((uint32_t)1 << (pin - 32));
+}
+
+static inline __attribute__((always_inline))
+void directModeInput(IO_REG_TYPE pin)
+{
+    if ( digitalPinIsValid(pin) )
+    {
+        uint32_t rtc_reg(rtc_gpio_desc[pin].reg);
+
+        if ( rtc_reg ) // RTC pins PULL settings
+        {
+            ESP_REG(rtc_reg) = ESP_REG(rtc_reg) & ~(rtc_gpio_desc[pin].mux);
+            ESP_REG(rtc_reg) = ESP_REG(rtc_reg) & ~(rtc_gpio_desc[pin].pullup | rtc_gpio_desc[pin].pulldown);
+        }
+
+        if ( pin < 32 )
+            GPIO.enable_w1tc = ((uint32_t)1 << pin);
+        else
+            GPIO.enable1_w1tc.val = ((uint32_t)1 << (pin - 32));
+
+        uint32_t pinFunction((uint32_t)2 << FUN_DRV_S); // what are the drivers?
+        pinFunction |= FUN_IE; // input enable but required for output as well?
+        pinFunction |= ((uint32_t)2 << MCU_SEL_S);
+
+        ESP_REG(DR_REG_IO_MUX_BASE + esp32_gpioMux[pin].reg) = pinFunction;
+
+        GPIO.pin[pin].val = 0;
+    }
+}
+
+static inline __attribute__((always_inline))
+void directModeOutput(IO_REG_TYPE pin)
+{
+    if ( digitalPinIsValid(pin) && pin <= 33 ) // pins above 33 can be only inputs
+    {
+        uint32_t rtc_reg(rtc_gpio_desc[pin].reg);
+
+        if ( rtc_reg ) // RTC pins PULL settings
+        {
+            ESP_REG(rtc_reg) = ESP_REG(rtc_reg) & ~(rtc_gpio_desc[pin].mux);
+            ESP_REG(rtc_reg) = ESP_REG(rtc_reg) & ~(rtc_gpio_desc[pin].pullup | rtc_gpio_desc[pin].pulldown);
+        }
+
+        if ( pin < 32 )
+            GPIO.enable_w1ts = ((uint32_t)1 << pin);
+        else // already validated to pins <= 33
+            GPIO.enable1_w1ts.val = ((uint32_t)1 << (pin - 32));
+
+        uint32_t pinFunction((uint32_t)2 << FUN_DRV_S); // what are the drivers?
+        pinFunction |= FUN_IE; // input enable but required for output as well?
+        pinFunction |= ((uint32_t)2 << MCU_SEL_S);
+
+        ESP_REG(DR_REG_IO_MUX_BASE + esp32_gpioMux[pin].reg) = pinFunction;
+
+        GPIO.pin[pin].val = 0;
+    }
+}
+
+#define DIRECT_READ(base, pin)          directRead(pin)
+#define DIRECT_WRITE_LOW(base, pin)     directWriteLow(pin)
+#define DIRECT_WRITE_HIGH(base, pin)    directWriteHigh(pin)
+#define DIRECT_MODE_INPUT(base, pin)    directModeInput(pin)
+#define DIRECT_MODE_OUTPUT(base, pin)   directModeOutput(pin)
+// https://github.com/PaulStoffregen/OneWire/pull/47
+// https://github.com/stickbreaker/OneWire/commit/6eb7fc1c11a15b6ac8c60e5671cf36eb6829f82c
+#ifdef  interrupts
+#undef  interrupts
+#endif
+#ifdef  noInterrupts
+#undef  noInterrupts
+#endif
+#define noInterrupts() {portMUX_TYPE mux = portMUX_INITIALIZER_UNLOCKED;portENTER_CRITICAL(&mux)
+#define interrupts() portEXIT_CRITICAL(&mux);}
+//#warning "ESP32 OneWire testing"
+
+#elif defined(ARDUINO_ARCH_STM32)
+#define PIN_TO_BASEREG(pin)             (0)
+#define PIN_TO_BITMASK(pin)             ((uint32_t)digitalPinToPinName(pin))
+#define IO_REG_TYPE uint32_t
+#define IO_REG_BASE_ATTR
+#define IO_REG_MASK_ATTR
+#define DIRECT_READ(base, pin)          digitalReadFast((PinName)pin)
+#define DIRECT_WRITE_LOW(base, pin)     digitalWriteFast((PinName)pin, LOW)
+#define DIRECT_WRITE_HIGH(base, pin)    digitalWriteFast((PinName)pin, HIGH)
+#define DIRECT_MODE_INPUT(base, pin)    pin_function((PinName)pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0))
+#define DIRECT_MODE_OUTPUT(base, pin)   pin_function((PinName)pin, STM_PIN_DATA(STM_MODE_OUTPUT_PP, GPIO_NOPULL, 0))
+
+#elif defined(__SAMD21G18A__)
+#define PIN_TO_BASEREG(pin)             portModeRegister(digitalPinToPort(pin))
+#define PIN_TO_BITMASK(pin)             (digitalPinToBitMask(pin))
+#define IO_REG_TYPE uint32_t
+#define IO_REG_BASE_ATTR
+#define IO_REG_MASK_ATTR
+#define DIRECT_READ(base, mask)         (((*((base)+8)) & (mask)) ? 1 : 0)
+#define DIRECT_MODE_INPUT(base, mask)   ((*((base)+1)) = (mask))
+#define DIRECT_MODE_OUTPUT(base, mask)  ((*((base)+2)) = (mask))
+#define DIRECT_WRITE_LOW(base, mask)    ((*((base)+5)) = (mask))
+#define DIRECT_WRITE_HIGH(base, mask)   ((*((base)+6)) = (mask))
+
+#elif defined(RBL_NRF51822)
+#define PIN_TO_BASEREG(pin)             (0)
+#define PIN_TO_BITMASK(pin)             (pin)
+#define IO_REG_TYPE uint32_t
+#define IO_REG_BASE_ATTR
+#define IO_REG_MASK_ATTR
+#define DIRECT_READ(base, pin)          nrf_gpio_pin_read(pin)
+#define DIRECT_WRITE_LOW(base, pin)     nrf_gpio_pin_clear(pin)
+#define DIRECT_WRITE_HIGH(base, pin)    nrf_gpio_pin_set(pin)
+#define DIRECT_MODE_INPUT(base, pin)    nrf_gpio_cfg_input(pin, NRF_GPIO_PIN_NOPULL)
+#define DIRECT_MODE_OUTPUT(base, pin)   nrf_gpio_cfg_output(pin)
+
+#elif defined(__arc__) /* Arduino101/Genuino101 specifics */
+
+#include "scss_registers.h"
+#include "portable.h"
+#include "avr/pgmspace.h"
+
+#define GPIO_ID(pin)			(g_APinDescription[pin].ulGPIOId)
+#define GPIO_TYPE(pin)			(g_APinDescription[pin].ulGPIOType)
+#define GPIO_BASE(pin)			(g_APinDescription[pin].ulGPIOBase)
+#define DIR_OFFSET_SS			0x01
+#define DIR_OFFSET_SOC			0x04
+#define EXT_PORT_OFFSET_SS		0x0A
+#define EXT_PORT_OFFSET_SOC		0x50
+
+/* GPIO registers base address */
+#define PIN_TO_BASEREG(pin)		((volatile uint32_t *)g_APinDescription[pin].ulGPIOBase)
+#define PIN_TO_BITMASK(pin)		pin
+#define IO_REG_TYPE			uint32_t
+#define IO_REG_BASE_ATTR
+#define IO_REG_MASK_ATTR
+
+static inline __attribute__((always_inline))
+IO_REG_TYPE directRead(volatile IO_REG_TYPE *base, IO_REG_TYPE pin)
+{
+    IO_REG_TYPE ret;
+    if (SS_GPIO == GPIO_TYPE(pin)) {
+        ret = READ_ARC_REG(((IO_REG_TYPE)base + EXT_PORT_OFFSET_SS));
+    } else {
+        ret = MMIO_REG_VAL_FROM_BASE((IO_REG_TYPE)base, EXT_PORT_OFFSET_SOC);
+    }
+    return ((ret >> GPIO_ID(pin)) & 0x01);
+}
+
+static inline __attribute__((always_inline))
+void directModeInput(volatile IO_REG_TYPE *base, IO_REG_TYPE pin)
+{
+    if (SS_GPIO == GPIO_TYPE(pin)) {
+        WRITE_ARC_REG(READ_ARC_REG((((IO_REG_TYPE)base) + DIR_OFFSET_SS)) & ~(0x01 << GPIO_ID(pin)),
+			((IO_REG_TYPE)(base) + DIR_OFFSET_SS));
+    } else {
+        MMIO_REG_VAL_FROM_BASE((IO_REG_TYPE)base, DIR_OFFSET_SOC) &= ~(0x01 << GPIO_ID(pin));
+    }
+}
+
+static inline __attribute__((always_inline))
+void directModeOutput(volatile IO_REG_TYPE *base, IO_REG_TYPE pin)
+{
+    if (SS_GPIO == GPIO_TYPE(pin)) {
+        WRITE_ARC_REG(READ_ARC_REG(((IO_REG_TYPE)(base) + DIR_OFFSET_SS)) | (0x01 << GPIO_ID(pin)),
+			((IO_REG_TYPE)(base) + DIR_OFFSET_SS));
+    } else {
+        MMIO_REG_VAL_FROM_BASE((IO_REG_TYPE)base, DIR_OFFSET_SOC) |= (0x01 << GPIO_ID(pin));
+    }
+}
+
+static inline __attribute__((always_inline))
+void directWriteLow(volatile IO_REG_TYPE *base, IO_REG_TYPE pin)
+{
+    if (SS_GPIO == GPIO_TYPE(pin)) {
+        WRITE_ARC_REG(READ_ARC_REG(base) & ~(0x01 << GPIO_ID(pin)), base);
+    } else {
+        MMIO_REG_VAL(base) &= ~(0x01 << GPIO_ID(pin));
+    }
+}
+
+static inline __attribute__((always_inline))
+void directWriteHigh(volatile IO_REG_TYPE *base, IO_REG_TYPE pin)
+{
+    if (SS_GPIO == GPIO_TYPE(pin)) {
+        WRITE_ARC_REG(READ_ARC_REG(base) | (0x01 << GPIO_ID(pin)), base);
+    } else {
+        MMIO_REG_VAL(base) |= (0x01 << GPIO_ID(pin));
+    }
+}
+
+#define DIRECT_READ(base, pin)		directRead(base, pin)
+#define DIRECT_MODE_INPUT(base, pin)	directModeInput(base, pin)
+#define DIRECT_MODE_OUTPUT(base, pin)	directModeOutput(base, pin)
+#define DIRECT_WRITE_LOW(base, pin)	directWriteLow(base, pin)
+#define DIRECT_WRITE_HIGH(base, pin)	directWriteHigh(base, pin)
+
+#elif defined(__riscv)
+
+/*
+ * Tested on highfive1
+ *
+ * Stable results are achieved operating in the
+ * two high speed modes of the highfive1.  It
+ * seems to be less reliable in slow mode.
+ */
+#define PIN_TO_BASEREG(pin)             (0)
+#define PIN_TO_BITMASK(pin)             digitalPinToBitMask(pin)
+#define IO_REG_TYPE uint32_t
+#define IO_REG_BASE_ATTR
+#define IO_REG_MASK_ATTR
+
+static inline __attribute__((always_inline))
+IO_REG_TYPE directRead(IO_REG_TYPE mask)
+{
+    return ((GPIO_REG(GPIO_INPUT_VAL) & mask) != 0) ? 1 : 0;
+}
+
+static inline __attribute__((always_inline))
+void directModeInput(IO_REG_TYPE mask)
+{
+    GPIO_REG(GPIO_OUTPUT_XOR)  &= ~mask;
+    GPIO_REG(GPIO_IOF_EN)      &= ~mask;
+
+    GPIO_REG(GPIO_INPUT_EN)  |=  mask;
+    GPIO_REG(GPIO_OUTPUT_EN) &= ~mask;
+}
+
+static inline __attribute__((always_inline))
+void directModeOutput(IO_REG_TYPE mask)
+{
+    GPIO_REG(GPIO_OUTPUT_XOR)  &= ~mask;
+    GPIO_REG(GPIO_IOF_EN)      &= ~mask;
+
+    GPIO_REG(GPIO_INPUT_EN)  &= ~mask;
+    GPIO_REG(GPIO_OUTPUT_EN) |=  mask;
+}
+
+static inline __attribute__((always_inline))
+void directWriteLow(IO_REG_TYPE mask)
+{
+    GPIO_REG(GPIO_OUTPUT_VAL) &= ~mask;
+}
+
+static inline __attribute__((always_inline))
+void directWriteHigh(IO_REG_TYPE mask)
+{
+    GPIO_REG(GPIO_OUTPUT_VAL) |= mask;
+}
+
+#define DIRECT_READ(base, mask)          directRead(mask)
+#define DIRECT_WRITE_LOW(base, mask)     directWriteLow(mask)
+#define DIRECT_WRITE_HIGH(base, mask)    directWriteHigh(mask)
+#define DIRECT_MODE_INPUT(base, mask)    directModeInput(mask)
+#define DIRECT_MODE_OUTPUT(base, mask)   directModeOutput(mask)
+
+#else
+#define PIN_TO_BASEREG(pin)             (0)
+#define PIN_TO_BITMASK(pin)             (pin)
+#define IO_REG_TYPE unsigned int
+#define IO_REG_BASE_ATTR
+#define IO_REG_MASK_ATTR
+#define DIRECT_READ(base, pin)          digitalRead(pin)
+#define DIRECT_WRITE_LOW(base, pin)     digitalWrite(pin, LOW)
+#define DIRECT_WRITE_HIGH(base, pin)    digitalWrite(pin, HIGH)
+#define DIRECT_MODE_INPUT(base, pin)    pinMode(pin,INPUT)
+#define DIRECT_MODE_OUTPUT(base, pin)   pinMode(pin,OUTPUT)
+#warning "OneWire. Fallback mode. Using API calls for pinMode,digitalRead and digitalWrite. Operation of this library is not guaranteed on this architecture."
+
+#endif
+
+#endif

src/OneWire/util/OneWire_direct_regtype.h

@@ -0,0 +1,52 @@
+#ifndef OneWire_Direct_RegType_h
+#define OneWire_Direct_RegType_h
+
+#include <stdint.h>
+
+// Platform specific I/O register type
+
+#if defined(__AVR__)
+#define IO_REG_TYPE uint8_t
+
+#elif defined(__MK20DX128__) || defined(__MK20DX256__) || defined(__MK66FX1M0__) || defined(__MK64FX512__)
+#define IO_REG_TYPE uint8_t
+
+#elif defined(__IMXRT1052__) || defined(__IMXRT1062__)
+#define IO_REG_TYPE uint32_t
+
+#elif defined(__MKL26Z64__)
+#define IO_REG_TYPE uint8_t
+
+#elif defined(__SAM3X8E__) || defined(__SAM3A8C__) || defined(__SAM3A4C__)
+#define IO_REG_TYPE uint32_t
+
+#elif defined(__PIC32MX__)
+#define IO_REG_TYPE uint32_t
+
+#elif defined(ARDUINO_ARCH_ESP8266)
+#define IO_REG_TYPE uint32_t
+
+#elif defined(ARDUINO_ARCH_ESP32)
+#define IO_REG_TYPE uint32_t
+#define IO_REG_MASK_ATTR
+
+#elif defined(ARDUINO_ARCH_STM32)
+#define IO_REG_TYPE uint32_t
+
+#elif defined(__SAMD21G18A__)
+#define IO_REG_TYPE uint32_t
+
+#elif defined(RBL_NRF51822)
+#define IO_REG_TYPE uint32_t
+
+#elif defined(__arc__) /* Arduino101/Genuino101 specifics */
+#define IO_REG_TYPE uint32_t
+
+#elif defined(__riscv)
+#define IO_REG_TYPE uint32_t
+
+#else
+#define IO_REG_TYPE unsigned int
+
+#endif
+#endif

src/common.h

@@ -0,0 +1,138 @@
+#ifndef _MY_STUFF_H_INCLUDED
+#define _MY_STUFF_H_INCLUDED
+
+#include "./DallasTemperature/DallasTemperature.h"
+// #include <math.h> // NAN
+
+#define _VERSION_MAJOR 0
+#define _VERSION_MINOR 0
+#define _VERSION_MICRO 1
+#define _VERSION_NUMBER _VERSION_MICRO | (_VERSION_MINOR << 6) | (_VERSION_MAJOR << 12)
+#define _VERSION_STRING "v0.0.1"
+
+#define _DEBUG 1
+#define _DEBUG_SENSORS 0
+#define _MODBUS 1
+
+#if _DEBUG == 1
+#define _print(x) Serial.print(x)
+#define _println(x) Serial.println(x)
+#if _DEBUG_SENSORS == 1
+#define _prints(x) Serial.print(x)
+#define _printsln(x) Serial.println(x)
+#else
+#define _prints(x)
+#define _printsln(x)
+#endif
+#else
+#define _print(x)
+#define _println(x)
+#define _prints(x)
+#define _printsln(x)
+#endif
+
+#define _REGS_INFRONTOF_EVENTS 6
+#define _MODBUS_MAX_EVENTS 234 // Ergibt sich aus 0xF0 - 0x06
+
+#if _MODBUS == 1
+#include "modbus/ModbusRTUSlave.h"
+extern bool timeStampOverflow;
+extern unsigned long timeStamp;
+extern u8 &valves;
+extern u16 &eventCounter;
+extern u16 modbusData[];
+#define _setModbusValve(index, val)\
+    if (bitRead(valves, index) != val) {\
+        bitWrite(valves, index, val);\
+        bitWrite(modbusData[1], index+8, val);\
+        if (eventCounter < _MODBUS_MAX_EVENTS) {\
+            /* Die ersten 12 Bits beinhalten den relativen Zeitstempel in Zehntelsekunden */\
+            /* Dieser Stempel ist immer 0xFFF, falls schon zuviel Zeit seit der letzten Referenzierung vergangen ist */\
+            u16 result = (timeStampOverflow) ? 0xFFF : ((millis() - timeStamp) / 100) & 0xFFF;\
+            /* Die Bits 12...14 beinhalten die Nr des geschalteten Ausgangs */\
+            result |= index << 12;\
+            /* Das MSB gibt an, ob der Ausgang ein- oder ausgeschaltet wurde */\
+            result |= val << 15;\
+            modbusData[_REGS_INFRONTOF_EVENTS + eventCounter] = result;\
+            eventCounter++;\
+        }\
+    }
+#define _setModbusValue(index, val) modbusData[index] = val
+#else
+#define _setModbusValve(index, val)
+#define _setModbusValue(index, val)
+#endif // _MODBUS ==
+
+#define _MODBUS_ADDR_MIN 1
+#define _MODBUS_ADDR_MAX 247  // Laut QModMaster letzte Adresse
+#define _MODBUS_DELAY_MIN 0   // 1/10 Millisekunden
+#define _MODBUS_DELAY_MAX 250 // 1/10 Millisekunden
+#define _MODBUS_INVALID_BAUDRATE 4294967295
+
+#define _MODBUS_VALVE_T1_INDEX 0
+#define _MODBUS_VALVE_T2_INDEX 1
+#define _MODBUS_VALVE_PR_INDEX 2
+#define _MODBUS_VALVE_PF_INDEX 3
+#define _MODBUS_T1_INDEX       2
+#define _MODBUS_T2_INDEX       3
+#define _MODBUS_P_INDEX        4
+
+#define _SENSOR_FAULT 0xFFFF
+
+#define _STD_TEMP_SETPOINT   400  // Hundertstel
+#define _STD_TEMP_HYSTERESIS 10   // Hundertstel
+#define _STD_P_SETPOINT      100  // Hundertstel
+#define _STD_P_HYSTERESIS    5    // Hundertstel
+#define _STD_P_EN_INC        1
+#define _STD_P_EN_DEC        1
+#define _STD_T_EN            1
+#define _STD_C_EN            0
+#define _MIN_TEMP_SETPOINT   10   // Hundertstel
+#define _MAX_TEMP_SETPOINT   3000 // Hundertstel
+#define _MIN_TEMP_HYSTERESIS 1    // Hundertstel
+#define _MAX_TEMP_HYSTERESIS 100  // Hundertstel
+#define _MIN_P_SETPOINT      0    // Hundertstel
+#define _MAX_P_SETPOINT      300  // Hundertstel
+#define _MIN_P_HYSTERESIS    1    // Hundertstel
+#define _MAX_P_HYSTERESIS    50   // Hundertstel
+
+#define _P_SENSOR_1_5V_0_5BAR 1
+#define _P_SENSOR_0_5V_0_6BAR 2
+
+enum PSensor : uint8_t {
+    SMC_1_5V_0_5BAR=1, // Sensor mit Kabel
+    GEMS_0_5V_0_6BAR   // Sensor mit Würfelstecker
+};
+
+struct parameters {               // Prozesswerte
+    int16_t ts1  = _SENSOR_FAULT; // Soll-Temperatur 1 in 1/100 °C
+    int16_t th1  = _SENSOR_FAULT; // Hysterese für Temperatur 1 (1/100)
+    int16_t ts2  = _SENSOR_FAULT; // Soll-Temperatur 2 in 1/100 °C
+    int16_t th2  = _SENSOR_FAULT; // Hysterese für Temperatur 2 (1/100)
+    int16_t ps   = _SENSOR_FAULT; // Druck in bar
+    int16_t ph   = _SENSOR_FAULT; // Hysterese für Druck
+    uint8_t tEn  = 255;           // Kühlung (de)aktiviert
+    uint8_t pInc = 255;           // Drucksteigerung (de)aktiviert
+    uint8_t pDec = 255;           // Druckabfall (de)aktiviert
+    uint8_t cEn  = 255;           // Controller (de)aktiviert
+};
+
+struct values {                 // aktuelle Messwerte
+    int16_t t1 = _SENSOR_FAULT; // Temperatur in 1/100 °C
+    int16_t p  = _SENSOR_FAULT; // Druck in 1/100 bar
+};
+
+struct modbusParameters {           // Parameter für Modbus
+    uint32_t baudrate = _MODBUS_INVALID_BAUDRATE; // Modbus-Baudrate
+    uint8_t address   = 255;        // Modbus-Adresse
+    uint8_t delay     = 255;        // delay in 1/10 ms vor der Antwort
+};
+
+struct valveStates {
+    bool t1;
+    bool t2;
+    bool pInc;
+    bool pDec;
+};
+
+#endif // _MY_STUFF_H_INCLUDED

src/controller/controller.cpp

@@ -0,0 +1,219 @@
+#include "controller.h"
+
+Controller::Controller(const uint8_t pAnalaogPin,
+                       const uint8_t oneWirePin,
+                       parameters *p,
+                       values *v,
+                       Display *d,
+                       PSensor *s,
+                       valveStates *vStates,
+                       const uint8_t t1Pin,
+                       const uint8_t t2Pin,
+                       const uint8_t pRisePin,
+                       const uint8_t pFallPin)
+    : _aPin(pAnalaogPin)
+    , _oneWire(oneWirePin)
+    , _params(p)
+    , _vals(v)
+    , _display(d)
+    , _pSensor(s)
+    , _vStates(vStates)
+    , _prPin(pRisePin)
+    , _pfPin(pFallPin)
+    , _t1Pin(t1Pin)
+    , _t2Pin(t2Pin)
+    , _dallas(&_oneWire)
+{
+    pinMode(_prPin, OUTPUT);
+    pinMode(_pfPin, OUTPUT);
+    pinMode(_t1Pin, OUTPUT);
+    pinMode(_t2Pin, OUTPUT);
+    digitalWrite(_prPin, 0);
+    digitalWrite(_pfPin, 0);
+    digitalWrite(_t1Pin, 0);
+    digitalWrite(_t2Pin, 0);
+    _vStates->pInc = false;
+    _vStates->pDec = false;
+    _vStates->t1 = false;
+}
+
+void Controller::init(bool startup=false)
+{
+    _dallas.begin();
+    _dallas.setWaitForConversion(false);
+    const uint8_t maxDevices = 1;
+    uint8_t deviceCount = _dallas.getDS18Count();
+    if (deviceCount > maxDevices) {
+        _display->tooMuchOneWireDevicesDetected(deviceCount, maxDevices);
+    } else if (!deviceCount) {
+        _display->noOneWireDevicesDetected();
+    } else {
+        _initOk = true;
+        _dallas.getAddress(_tempAddr1, 0);
+        _dallas.setResolution(12);
+        if (!startup)
+            _display->oneWireDevicesDetected(deviceCount);
+    }
+}
+
+void Controller::process()
+{
+    if (_initOk && millis() - _lastConversion > _CONVERSION_DELAY) {
+        _lastConversion = millis();
+        _requestConversion = true;
+        float temp = _dallas.getTempC(_tempAddr1);
+        if (temp == DEVICE_DISCONNECTED_C)
+            _vals->t1 = _SENSOR_FAULT;
+        else
+            _vals->t1 = temp * 100;
+        _prints("Temp: "); _prints(_vals->t1);
+        if (_vals->t1 != _SENSOR_FAULT && _params->tEn && _params->cEn) {
+            switch (_tState) {
+            case stateIdle:
+                _printsln(", case stateIdle");
+                if (_vals->t1 < _params->ts1 - _params->th1) {
+                    _setT1Valve(0, stateRising);
+                    _prints(" -> rising");
+                } else if (_vals->t1 > _params->ts1 + _params->th1) {
+                    _setT1Valve(1, stateFalling);
+                     _prints(" -> falling");
+                }
+                _printsln();
+                break;
+            case stateRising:
+                _prints(", case stateRising");
+                if (_vals->t1 > _params->ts1 + _params->th1) {
+                    _setT1Valve(1, stateIdle);
+                     _prints(" -> idle");
+                }
+                _printsln();
+                break;
+            case stateFalling:
+                _prints(", case stateFalling");
+                if (_vals->t1 < _params->ts1 - _params->th1) {
+                    _setT1Valve(0, stateIdle);
+                     _prints(" -> idle");
+                }
+                _printsln();
+                break;
+            }
+        } else {
+            _setT1Valve(0, stateIdle);
+            _printsln();
+        }
+        _setModbusValue(_MODBUS_T1_INDEX, _vals->t1);
+    } else if (_requestConversion) {
+        _requestConversion = false;
+        _dallas.requestTemperatures();
+    }
+    if (millis() - _lastAnalogRead > _ANALOG_READ_DELAY) {
+        _lastAnalogRead = millis();
+        _rawP = analogRead(_aPin);
+        _prints("_rawP: "); _prints(_rawP);
+        switch (*_pSensor) {
+        case SMC_1_5V_0_5BAR:
+            float p = (float) _rawP / 2.046f; // 1023 / 5 * 100 (0-5 1/100 bar)
+            p = (p - 1) * 1.25f; // 1...5 V Sensor
+            _prints(" (Gems), p: "); _prints(p);
+            if (p < -0.5f) // Sensor ist definitiv nicht angeschlossen
+                _vals->p = _SENSOR_FAULT;
+            else if (p < 0) // Bei kleiner Toleranz ein bisschen schwindeln ;-)
+                _vals->p = 0;
+            else
+                _vals->p = p;
+            break;
+        case GEMS_0_5V_0_6BAR:
+            _vals->p = (float) _rawP / 1.705f; // 1023 / 6 * 100 (0-5 1/100 bar)
+            _prints(" (Gems), p: "); _prints(_vals->p);
+        }
+        _setModbusValue(_MODBUS_P_INDEX, _vals->p);
+        if (_vals->p != _SENSOR_FAULT && _params->cEn) {
+            switch (_pState) {
+            case stateIdle:
+                _prints(", case stateIdle");
+                if (_vals->p < _params->ps - _params->ph) {
+                    if (_params->pInc) {
+                        _printsln(" -> stateRising");
+                        _setPValves(stateRising);
+                    } else {
+                        _printsln();
+                        _setPValves(stateIdle);
+                    }
+                } else if (_vals->p > _params->ps + _params->ph) {
+                    if (_params->pDec) {
+                        _printsln(" -> stateFalling");
+                        _setPValves(stateFalling);
+                    } else {
+                        _printsln();
+                        _setPValves(stateIdle);
+                    }
+                } else _printsln();
+                break;
+            case stateRising:
+                _prints(", case stateRising");
+                if ((_params->pInc && _vals->p > _params->ps) || !_params->pInc) {
+                    _prints(" -> stateIdle");
+                    _setPValves(stateIdle);
+                }
+                _printsln();
+                break;
+            case stateFalling:
+                _prints(", case stateFalling");
+                if ((_params->pDec && _vals->p < _params->ps) || !_params->pDec) {
+                    _prints(" -> stateIdle");
+                    _setPValves(stateIdle);
+                }
+                _printsln();
+                break;
+            }
+        } else {
+            _printsln();
+            _setPValves(stateIdle);
+        }
+        _prints("_vStates->pInc: "); _prints(_vStates->pInc);
+        _prints(", _vStates->pDec: "); _printsln(_vStates->pDec);
+    }
+}
+
+void Controller::_setT1Valve(uint8_t val, States state)
+{
+    _tState = state;
+    digitalWrite(_t1Pin, val);
+    _vStates->t1 = val;
+    _setModbusValve(_MODBUS_VALVE_T1_INDEX, val);
+}
+
+void Controller::_setPValves(States state)
+{
+    _pState = state;
+    switch (state) {
+    case stateRising:
+        digitalWrite(_prPin, 1);
+        _vStates->pInc = true;
+        _setModbusValve(_MODBUS_VALVE_PR_INDEX, 1);
+        digitalWrite(_pfPin, 0);
+        _vStates->pDec = false;
+        _setModbusValve(_MODBUS_VALVE_PF_INDEX, 0);
+        break;
+    case stateFalling:
+        digitalWrite(_pfPin, 1);
+        _vStates->pDec = true;
+        _setModbusValve(_MODBUS_VALVE_PF_INDEX, 1);
+        digitalWrite(_prPin, 0);
+        _vStates->pInc = false;
+        _setModbusValve(_MODBUS_VALVE_PR_INDEX, 0);
+        break;
+    default: // idle valves
+        digitalWrite(_pfPin, 0);
+        _vStates->pDec = false;
+        _setModbusValve(_MODBUS_VALVE_PF_INDEX, 0);
+        digitalWrite(_prPin, 0);
+        _vStates->pInc = false;
+        _setModbusValve(_MODBUS_VALVE_PR_INDEX, 0);
+    }
+}
+
+// uint16_t Controller::_convertFloat(const float &x)
+// {
+//     return (uint16_t) (x * 100);
+// }

src/controller/controller.h

@@ -0,0 +1,66 @@
+#ifndef MY_CONTROLLER_H_INCLUDED
+#define MY_CONTROLLER_H_INCLUDED
+
+#include "../OneWire/OneWire.h"
+#include "../DallasTemperature/DallasTemperature.h"
+#include "../display/display.h"
+#include "../common.h"
+
+#define _CONVERSION_DELAY 800
+#define _ANALOG_READ_DELAY 500
+
+class Controller
+{
+private:
+    const uint8_t _aPin;
+    parameters *_params;
+    values *_vals;
+    Display *_display;
+    PSensor *_pSensor;
+    valveStates *_vStates;
+    uint8_t _prPin;
+    uint8_t _pfPin;
+    uint8_t _t1Pin;
+    uint8_t _t2Pin;
+
+    OneWire _oneWire;
+    DallasTemperature _dallas;
+    DeviceAddress _tempAddr1;
+
+    enum States : uint8_t {
+        stateIdle, stateRising, stateFalling
+    };
+    States _tState = stateIdle;
+    States _pState = stateIdle;
+
+    bool _initOk = false;
+    bool _requestConversion;
+    unsigned long _lastConversion;
+    unsigned long _lastAnalogRead;
+    uint16_t _rawP;
+
+    // void _setTState(States curr, States next);
+    // void _setPState(States curr, States next);
+    void _setT1Valve(uint8_t, States);
+    void _setPValves(States);
+    // uint16_t _convertFloat(const float &x);
+
+ public:
+    Controller(const uint8_t pAnalaogPin,
+               const uint8_t oneWirePin,
+               parameters *p,
+               values *vals,
+               Display *d,
+               PSensor *s,
+               valveStates *vStates,
+               const uint8_t pRisePin,
+               const uint8_t t1Pin,
+               const uint8_t t2Pin,
+               const uint8_t pFallPin
+               );
+
+    void init(bool startup=false);
+    void process();
+};
+
+#endif // MY_CONTROLLER_H_INCLUDED

src/display/display.cpp

@@ -0,0 +1,753 @@
+#include <Arduino.h>
+#include "../DallasTemperature/DallasTemperature.h"
+#include "display.h"
+
+Display::Display(
+    uint8_t cs,
+    uint8_t btnNext,
+    uint8_t btnPrev,
+    uint8_t btnSelect,
+    uint8_t btnCancel,
+    uint8_t bgLED,
+    parameters *params,
+    values *vals,
+    modbusParameters *modbus,
+    PSensor *sensor,
+    valveStates *vStates)
+        : U8G2_ST7920_128X64_2_HW_SPI(U8G2_R0, cs)
+        , btnNext(btnNext)
+        , btnPrev(btnPrev)
+        , btnSelect(btnSelect)
+        , btnCancel(btnCancel)
+        , bgLed(bgLED)
+        , _params(params)
+        , _vals(vals)
+        , _modbusParams(modbus)
+        , _pSensor(sensor)
+        , _vStates(vStates)
+{
+}
+
+void Display::process()
+{
+    switch (_event()) {
+        case _BACK_TO_HOME_SCREEN:
+            _selection = 0;
+            _home();
+            return;
+        case U8X8_MSG_GPIO_MENU_NEXT:
+            _nextEvent();
+            _select();
+            break;
+        case U8X8_MSG_GPIO_MENU_PREV:
+            _prevEvent();
+            _select();
+            break;
+        case U8X8_MSG_GPIO_MENU_SELECT:
+            if (_selection) {
+                parameters params;
+                modbusParameters modbus;
+                switch (_selection) {
+                case _MENU_MAIN:
+                    _saveCursorPosForLevel(MenuLevel_1);
+                    switch (_prevCursor) {
+                    case _POS_TEMPERATURE_MENU:
+                        _select(_MENU_TEMPERATURE);
+                        break;
+                    case _POS_PRESSURE_MENU:
+                        _select(_MENU_PRESSURE);
+                        break;
+                    case _POS_SYSTEM:
+                        _restrictInputValue(0, 255);
+                        _select(_VERIFY_ADMIN);
+                        break;
+                    case _POS_RESET:
+                        _select(_SELECTION_RESET);
+                        break;
+                    }
+                    break;
+                case _MENU_TEMPERATURE:
+                    _saveCursorPosForLevel(MenuLevel_2);
+                    switch (_prevCursor) {
+                    case _POS_TEMPERATURE_ENABLED:
+                        _cursor = _params->tEn;
+                        _select(_SELECTION_TEMPERATURE_ENABLED);
+                        break;
+                    case _POS_TEMPERATURE_SETPOINT:
+                        _val = _params->ts1;
+                        _restrictInputValue(_MIN_TEMP_SETPOINT, _MAX_TEMP_SETPOINT, Precision_2);
+                        _select(_SELECTION_TEMPERATURE_SETPOINT);
+                        break;
+                    case _POS_TEMPERATURE_HYSTERESIS:
+                        _val = _params->th1;
+                        _restrictInputValue(_MIN_TEMP_HYSTERESIS, _MAX_TEMP_HYSTERESIS, Precision_2);
+                        _select(_SELECTION_TEMPERATURE_HYSTERESIS);
+                        break;
+                    }
+                    break;
+                case _MENU_PRESSURE:
+                    _saveCursorPosForLevel(MenuLevel_2);
+                    switch (_prevCursor) {
+                    case _POS_PRESSURE_ENABLE_INCREASE:
+                        _cursor = _params->pInc;
+                        _select(_SELECTION_PRESSURE_ENABLE_INCREASE);
+                        break;
+                    case _POS_PRESSURE_ENABLE_DECREASE:
+                        _cursor = _params->pDec;
+                        _select(_SELECTION_PRESSURE_ENABLE_DECREASE);
+                        break;
+                    case _POS_PRESSURE_SETPOINT:
+                        _val = _params->ps;
+                        _restrictInputValue(_MIN_P_SETPOINT, _MAX_P_SETPOINT, Precision_2);
+                        _select(_SELECTION_PRESSURE_SETPOINT);
+                        break;
+                    case _POS_PRESSURE_HYSTERESIS:
+                        _val = _params->ph;
+                        _restrictInputValue(_MIN_P_HYSTERESIS, _MAX_P_HYSTERESIS, Precision_2);
+                        _select(_SELECTION_PRESSURE_HYSTERESIS);
+                        break;
+                    }
+                    break;
+                case _MENU_SYSTEM:
+                    _saveCursorPosForLevel(MenuLevel_2);
+                    switch (_prevCursor) {
+                    case _POS_MODBUS_MENU:
+                        _select(_MENU_SETTINGS_MODBUS);
+                        break;
+                    case _POS_P_SENSOR_SELECTION:
+                        _cursor = (*_pSensor) - 1;
+                        _select(_SELECTION_P_SENSOR);
+                        break;
+                    }
+                    break;
+                case _MENU_SETTINGS_MODBUS:
+                    _saveCursorPosForLevel(MenuLevel_3);
+                    switch (_prevCursor) {
+                    case _POS_MODBUS_ADDRESS:
+                        _val = _modbusParams->address;
+                        _restrictInputValue(_MODBUS_ADDR_MIN, _MODBUS_ADDR_MAX);
+                        _select(_SELECTION_MODBUS_ADDRESS);
+                        break;
+                    case _POS_MODBUS_BAUDRATE:
+                        _baudrateCursorPos();
+                        _select(_SELECTION_MODBUS_BAUDRATE);
+                        break;
+                    case _POS_MODBUS_DELAY:
+                        _val = _modbusParams->delay;
+                        _restrictInputValue(_MODBUS_DELAY_MIN, _MODBUS_DELAY_MAX, Precision_1);
+                        _select(_SELECTION_MODBUS_DELAY);
+                        break;
+                    }
+                    break;
+                case _SELECTION_TEMPERATURE_ENABLED:
+                    params.tEn = _cursor;
+                    setParams(params);
+                    _select(_MENU_TEMPERATURE, true);
+                    break;
+                case _SELECTION_TEMPERATURE_SETPOINT:
+                    // Serial.print("\n_val      : "); Serial.println((float) _val);
+                    // Serial.print("_val / 100: "); Serial.println(((float) _val) / 100);
+                    params.ts1 = _val;
+                    setParams(params);
+                    _select(_MENU_TEMPERATURE, true);
+                    break;
+                case _SELECTION_TEMPERATURE_HYSTERESIS:
+                    params.th1 = _val;
+                    setParams(params);
+                    _select(_MENU_TEMPERATURE, true);
+                    break;
+                case _SELECTION_PRESSURE_ENABLE_INCREASE:
+                    params.pInc = _cursor;
+                    setParams(params);
+                    _select(_MENU_PRESSURE, true);
+                    break;
+                case _SELECTION_PRESSURE_ENABLE_DECREASE:
+                    params.pDec = _cursor;
+                    setParams(params);
+                    _select(_MENU_PRESSURE, true);
+                    break;
+                case _SELECTION_PRESSURE_SETPOINT:
+                    params.ps = _val;
+                    setParams(params);
+                    _select(_MENU_PRESSURE, true);
+                    break;
+                case _SELECTION_PRESSURE_HYSTERESIS:
+                    params.ph = _val;
+                    setParams(params);
+                    _select(_MENU_PRESSURE, true);
+                    break;
+                case _SELECTION_MODBUS_BAUDRATE:
+                    _setModbusBaudrate();
+                    _select(_MENU_SETTINGS_MODBUS, true);
+                    break;
+                case _SELECTION_MODBUS_ADDRESS:
+                    modbus.address = _val;
+                    setModbusParams(modbus);
+                    _select(_MENU_SETTINGS_MODBUS, true);
+                    break;
+                case _SELECTION_MODBUS_DELAY:
+                    modbus.delay = _val;
+                    setModbusParams(modbus);
+                    _select(_MENU_SETTINGS_MODBUS, true);
+                    break;
+                case _SELECTION_P_SENSOR:
+                    switch (_cursor) {
+                    case _POS_P_SMC_1_5V_0_5BAR:
+                        setPSensor(SMC_1_5V_0_5BAR);
+                        break;
+                    case _POS_P_GEMS_0_5V_0_6BAR:
+                        setPSensor(GEMS_0_5V_0_6BAR);
+                        break;
+                    }
+                    _restoreCursor();
+                    _select(_MENU_SYSTEM);
+                    break;
+                case _VERIFY_ADMIN:
+                    if (_val == _ADMIN_CODE) {
+                        _select(_MENU_SYSTEM);
+                    } else {
+                        _restoreCursor();
+                        _select(_MENU_MAIN);
+                    }
+                    _val = 0;
+                    break;
+                case _SELECTION_RESET:
+                    if (_cursor == 1) {
+                        reset();
+                    } else {
+                        _restoreCursor();
+                        _select(_MENU_MAIN);
+                    }
+                    break;
+                }
+            }
+            break;
+        case U8X8_MSG_GPIO_MENU_HOME:
+            if (_selection) {
+                _val = 0;
+                if (!_restoreCursor()) {
+                    _home();
+                    return;
+                }
+                switch (_selection) {
+                case _MENU_MAIN:
+                    _selection = 0;
+                    _home();
+                    return;
+                case _SELECTION_TEMPERATURE_ENABLED:
+                case _SELECTION_TEMPERATURE_SETPOINT:
+                case _SELECTION_TEMPERATURE_HYSTERESIS:
+                    _select(_MENU_TEMPERATURE);
+                    break;
+                case _SELECTION_PRESSURE_ENABLE_INCREASE:
+                case _SELECTION_PRESSURE_ENABLE_DECREASE:
+                case _SELECTION_PRESSURE_SETPOINT:
+                case _SELECTION_PRESSURE_HYSTERESIS:
+                    _select(_MENU_PRESSURE);
+                    break;
+                case _MENU_SETTINGS_MODBUS:
+                case _SELECTION_P_SENSOR:
+                    _select(_MENU_SYSTEM);
+                    break;
+                case _SELECTION_MODBUS_ADDRESS:
+                case _SELECTION_MODBUS_BAUDRATE:
+                case _SELECTION_MODBUS_DELAY:
+                    _select(_MENU_SETTINGS_MODBUS);
+                    break;
+                default:
+                    _select(_MENU_MAIN);
+                }
+            }
+            break;
+    }
+    if (millis() - _prevT > 250) {
+        _prevT = millis();
+        if (!_selection) {
+            _home();
+        }
+    }
+}
+
+void Display::_select(const uint8_t selection, const bool restoreCursor=false)
+{
+    if (restoreCursor)
+        _restoreCursor();
+    _selection = selection;
+    _select();
+}
+
+void Display::_select()
+{
+    setFont(_SEL_FONT);
+    setFontRefHeightAll();
+    _inputValueActive = false;
+    _stepSize = 1;
+    switch (_selection) {
+    case _MENU_MAIN:
+        _menu_depth = 0;
+        sprintf(_text, "Hauptmenü (%s)", _VERSION_STRING);
+        _selCnt = my_UserInterfaceSelectionList(&u8g2, _text, _cursor, "Temperatur\nDruck\nSystem\nReset");
+        break;
+    case _MENU_TEMPERATURE:
+        _menu_depth = 1;
+        _selCnt = my_UserInterfaceSelectionList(&u8g2, "Temperatur", _cursor, "Kühlung de/aktivieren\nSollwert\nHysterese");
+        break;
+        case _SELECTION_TEMPERATURE_ENABLED:
+            _menu_depth = 2;
+            _selCnt = my_UserInterfaceMessage(&u8g2, "Kühlung", nullptr, "aktivieren", " nein \n ja ", _cursor);
+            break;
+        case _SELECTION_TEMPERATURE_SETPOINT:
+            _menu_depth = 2;
+            _inputValue(5, "Temperatur\nSollwert", "__float__");
+            break;
+        case _SELECTION_TEMPERATURE_HYSTERESIS:
+            _menu_depth = 2;
+            _inputValue(5, "Temperatur\nHysterese", "__float__");
+            break;
+    case _MENU_PRESSURE:
+        _menu_depth = 1;
+        _selCnt = my_UserInterfaceSelectionList(&u8g2, "Druck", _cursor, "Drucksteigerung\nDruckabfall\nSollwert\nHysterese");
+        break;
+        case _SELECTION_PRESSURE_ENABLE_INCREASE:
+            _menu_depth = 2;
+            _selCnt = my_UserInterfaceMessage(&u8g2, "Drucksteigerung", nullptr, "aktivieren", " nein \n ja ", _cursor);
+            break;
+        case _SELECTION_PRESSURE_ENABLE_DECREASE:
+            _menu_depth = 2;
+            _selCnt = my_UserInterfaceMessage(&u8g2, "Druckabfall", nullptr, "aktivieren", " nein \n ja ", _cursor);
+            break;
+        case _SELECTION_PRESSURE_SETPOINT:
+            _menu_depth = 2;
+            _inputValue(5, "Druck\nSollwert", "__float__");
+            break;
+        case _SELECTION_PRESSURE_HYSTERESIS:
+            _menu_depth = 2;
+            _inputValue(5, "Druck\nHysterese", "__float__");
+            break;
+    case _VERIFY_ADMIN:
+        _menu_depth = 1;
+        _inputValueActive = true;
+        sprintf(_text, "%d", _val);
+        my_UserInterfaceInputValueString(&u8g2, "Systemeinstellungen\nBerechtigung\nnachweisen:", nullptr, _text);
+        break;
+    case _MENU_SYSTEM:
+        _menu_depth = 1;
+        _selCnt = my_UserInterfaceSelectionList(&u8g2, "System", _cursor, "Modbus\nDrucksensor");
+        break;
+        case _MENU_SETTINGS_MODBUS:
+            _menu_depth = 2;
+            _selCnt = my_UserInterfaceSelectionList(&u8g2, "Modbus", _cursor, "Adresse\nBaudrate\nAntwort-Delay");
+            break;
+            case _SELECTION_MODBUS_BAUDRATE:
+                _menu_depth = 3;
+                _selCnt = my_UserInterfaceSelectionList(&u8g2, "Baudrate", _cursor, "300\n1200\n2400\n4800\n9600\n19200\n38400\n57600\n115200");
+                break;
+            case _SELECTION_MODBUS_ADDRESS:
+                _menu_depth = 3;
+                sprintf(_text, "Dezimal: %d", _val);
+                _inputValue(1, "Modbus Adresse");
+                break;
+            case _SELECTION_MODBUS_DELAY:
+                _menu_depth = 3;
+                sprintf(_text, "%d.%.d", _val / 10, _val % 10);
+                _inputValue(1, "Modbus\nAntwort-Verzögerung\nin Millisekunden");
+                break;
+        case _SELECTION_P_SENSOR:
+            _menu_depth = 2;
+            _selCnt = my_UserInterfaceSelectionList(&u8g2, "Drucksensor", _cursor, "SMC: 1-5V,0-5 bar\nGems: 0-5V,0-6 bar");
+            break;
+    case _SELECTION_RESET:
+        _menu_depth = 1;
+        _selCnt = my_UserInterfaceMessage(&u8g2, "Controller neustarten", "--------------------", "Wirklich neustarten?", " nein \n ja ", _cursor);
+        break;
+    default:
+        _menu_depth = 0;
+    }
+}
+
+void Display::_home()
+{
+    // Das Display hat eine Auflösung von 128 x 64 Pixel
+    // Mit der Schriftart u8g2_font_ncenB10_te stellt \xb0 das °-Zeichen dar
+    int ts1a = _params->ts1 / 100;
+    int ts1b = _params->ts1 % 100;
+    int th1a = _params->th1 / 100;
+    int th1b = _params->th1 % 100;
+    int psa = _params->ps / 100;
+    int psb = _params->ps % 100;
+    int pha = _params->ph / 100;
+    int phb = _params->ph % 100;
+    bool cEn = _params->cEn;
+    bool tEn = (!cEn) ? false : _params->tEn;
+    bool pInc = (!cEn) ? false : _params->pInc;
+    bool pDec = (!cEn) ? false : _params->pDec;
+    bool pEn = pInc || pDec;
+    uint8_t pState = (_vStates->pInc) ? 1 : (_vStates->pDec) ? 2 : 0;
+    bool tState = _vStates->t1;
+    // %u in sprintf() geht nur bis uint16_t
+    String baudStr(_modbusParams->baudrate);
+    firstPage();
+    do {
+        setFont(u8g2_font_fub20_tf);
+        if (_vals->t1 == _SENSOR_FAULT)
+            sprintf(_text, "--.-- \xb0\C");
+        else
+            sprintf(_text, "%d.%.2d \xb0\C", _vals->t1 / 100, _vals->t1 % 100);
+        drawStr(0, 27, _text);
+        if (_vals->p == _SENSOR_FAULT)
+            sprintf(_text, "--.-- bar");
+        else
+            sprintf(_text, "%d.%.2d bar", _vals->p / 100, _vals->p % 100);
+        drawStr(0, 57, _text);
+        //drawHLine(0, 57, 128);
+        setFont(u8g2_font_micro_tr);
+        //setFont(u8g2_font_5x7_tr);
+        sprintf(_text, "%d.%.2d+-%d.%.2d  Regelung %saktiv", ts1a, ts1b, th1a, th1b, (tEn) ? "": "in");
+        drawStr(0, 5, _text);
+        sprintf(_text, "%d.%.2d+-%d.%.2d  P+ %s  P- %s", psa, psb, pha, phb, (pInc) ? "ein": "aus", (pDec) ? "ein": "aus");
+        drawStr(0, 35, _text);
+        // sprintf(_text, "Modbus Adr. %u, Baudr. %u", _modbusParams->address, _modbusParams->baudrate);
+        sprintf(_text, "Modbus Adr. %u, Baudr. %s", _modbusParams->address, baudStr.c_str());
+        drawStr(0, 64, _text);
+        if (cEn) {
+            if (tEn) {
+                if (tState) {
+                    setFont(u8g2_font_open_iconic_arrow_2x_t);
+                    drawStr(112, 25, "\x58"); // Kreislaufsymbol
+                }
+            } else {
+                setFont(u8g2_font_open_iconic_check_2x_t);
+                drawStr(112, 25, "\x42"); // X in schwarzem Kreis
+            }
+            if (!pEn) {
+                setFont(u8g2_font_open_iconic_check_2x_t);
+                drawStr(112, 55, "\x42"); // X in schwarzem Kreis
+            } else if (pState == 1) {
+                setFont(u8g2_font_open_iconic_arrow_2x_t);
+                drawStr(112, 55, "\x4b"); // Pfeil rauf
+            } else if (pState == 2) {
+                setFont(u8g2_font_open_iconic_arrow_2x_t);
+                drawStr(112, 55, "\x48"); // Pfeil runter
+            }
+        } else {
+            setFont(u8g2_font_open_iconic_check_2x_t);
+            // drawStr(112, 25, "\x42"); // X in schwarzem Kreis
+            // drawStr(112, 55, "\x42"); // X in schwarzem Kreis
+            drawStr(112, 22, "\x42"); // X in schwarzem Kreis
+            drawStr(112, 58, "\x42"); // X in schwarzem Kreis
+            setFont(u8g2_font_open_iconic_embedded_2x_t);
+            drawStr(113, 40, "\x4e"); // Power-Symbol
+            // drawLine(0, 0, 128, 64);
+            // drawLine(128, 0, 0, 64);
+        }
+
+    } while (nextPage());
+}
+
+void Display::init()
+{
+    pinMode(bgLed, OUTPUT);
+    digitalWrite(bgLed, true);
+    begin(btnSelect, btnNext, btnPrev, U8X8_PIN_NONE, U8X8_PIN_NONE, btnCancel);
+}
+
+void Display::modbusProblem()
+{
+    firstPage();
+    do {
+        setFont(_STD_FONT);
+        uint8_t y = _FIRS_LINE_Y;
+        drawStr(0, y, "Problem:");
+        y += _STD_LINEHEIGHT;
+        drawStr(0, y, "Fehler Modbus");
+    } while (nextPage());
+}
+
+void Display::oneWireDevicesDetected(uint8_t count)
+{
+    setFont(_SEL_FONT);
+    setFontRefHeightAll();
+    sprintf(_text, "%u", count);
+    userInterfaceMessage("OneWire-Sensoren", "Erfolgreich erkannt:", _text, " OK ");
+}
+
+void Display::tooMuchOneWireDevicesDetected(uint8_t actual, uint8_t max)
+{
+    setFont(_SEL_FONT);
+    setFontRefHeightAll();
+    sprintf(_text, "%u (max: %u)", actual, max);
+    userInterfaceMessage("Fehler OneWire", "Zu viele Sensoren:", _text, " OK ");
+}
+
+void Display::noOneWireDevicesDetected()
+{
+    setFont(_SEL_FONT);
+    setFontRefHeightAll();
+    userInterfaceMessage("Fehler OneWire", "Keine Sensoren", "erkannt", " OK ");
+}
+
+void Display::greeting()
+{
+    firstPage();
+    do {
+        setFont(_STD_FONT);
+        uint8_t y = _FIRS_LINE_Y;
+        drawStr(0, y, "Dreher");
+        y += _STD_LINEHEIGHT;
+        drawStr(0, y, "Brauanlagen");
+    } while (nextPage());
+}
+
+void Display::bgLight(uint8_t value)
+{
+    _bgLightAnalog = value;
+    _bgLightBool = (value > 0) ? true : false;
+    analogWrite(bgLed, value);
+}
+
+void Display::bgLight(bool state)
+{
+    _bgLightAnalog = (state) ? 255 : 0;
+    _bgLightBool = state;
+    digitalWrite(bgLed, state);
+}
+
+bool Display::bgLightIncrease(uint8_t step)
+{
+    _bgLightBool = true;
+    if (_bgLightAnalog == 255) {
+        return true;
+    }
+    int val = (int) _bgLightAnalog;
+    if (val + step >= 255) {
+        _bgLightAnalog = 255;
+        digitalWrite(bgLed, true);
+        return true;
+    } else {
+        _bgLightAnalog += step;
+        analogWrite(bgLed, _bgLightAnalog);
+    }
+    return false;
+}
+
+bool Display::bgLightDecrease(uint8_t step)
+{
+    if (_bgLightAnalog == 0) {
+        _bgLightBool = false;
+        return true;
+    }
+    int val = (int) _bgLightAnalog;
+    if (val - step <= 0) {
+        _bgLightAnalog = 0;
+        _bgLightBool = false;
+        digitalWrite(bgLed, false);
+        return true;
+    } else {
+        _bgLightBool = true;
+        _bgLightAnalog -= step;
+        analogWrite(bgLed, _bgLightAnalog);
+    }
+    return false;
+}
+
+uint8_t Display::bgLightAnalog()
+{
+    return _bgLightAnalog;
+}
+
+bool Display::bgLightState()
+{
+    return _bgLightBool;
+}
+
+void Display::_baudrateCursorPos()
+{
+    switch (_modbusParams->baudrate) {
+    case 300: _cursor = _POS_BAUDRATE_300; break;
+    case 1200: _cursor = _POS_BAUDRATE_1200; break;
+    case 2400: _cursor = _POS_BAUDRATE_2400; break;
+    case 4800: _cursor = _POS_BAUDRATE_4800; break;
+    case 19200: _cursor = _POS_BAUDRATE_19200; break;
+    case 38400: _cursor = _POS_BAUDRATE_38400; break;
+    case 57600: _cursor = _POS_BAUDRATE_57600; break;
+    case 115200: _cursor = _POS_BAUDRATE_115200; break;
+    default: _cursor = _POS_BAUDRATE_9600;
+    }
+}
+
+void Display::_setModbusBaudrate()
+{
+    modbusParameters params;
+    switch (_cursor) {
+    case _POS_BAUDRATE_300: params.baudrate = 300; break;
+    case _POS_BAUDRATE_1200: params.baudrate = 1200; break;
+    case _POS_BAUDRATE_2400: params.baudrate = 2400; break;
+    case _POS_BAUDRATE_4800: params.baudrate = 4800; break;
+    case _POS_BAUDRATE_19200: params.baudrate = 19200; break;
+    case _POS_BAUDRATE_38400: params.baudrate = 38400; break;
+    case _POS_BAUDRATE_57600: params.baudrate = 57600; break;
+    case _POS_BAUDRATE_115200: params.baudrate = 115200; break;
+    default: params.baudrate = 9600;
+    }
+    setModbusParams(params);
+}
+
+uint8_t Display::_event()
+{
+    uint8_t event = getMenuEvent();
+    if (event)
+        return event;
+    bool next = !digitalRead(btnNext);
+    bool prev = !digitalRead(btnPrev);
+    bool cancel = !digitalRead(btnCancel);
+    if (next || prev || cancel) {
+        if (millis() - _checkFastStepTime > _BEGIN_FAST_STEPS_DELAY) {
+            if (millis() - _lastFastStep > _FAST_STEP_MS) {
+                _lastFastStep = millis();
+                if (next)
+                    event = U8X8_MSG_GPIO_MENU_NEXT;
+                else if (prev)
+                    event = U8X8_MSG_GPIO_MENU_PREV;
+                else if (cancel)
+                    event = _BACK_TO_HOME_SCREEN;
+                if (millis() - _checkFastStepTime > _BEGIN_BIG_STEPS_DELAY)
+                    _enableBigSteps = true;
+            }
+        }
+    } else {
+        _checkFastStepTime = millis();
+        _enableBigSteps = false;
+    }
+    return event;
+}
+
+void Display::_nextEvent()
+{
+    if (_selection) {
+        if (_inputValueActive) {
+            if (_val > _valMin) {
+                int step = (_enableBigSteps) ? _BIG_STEP * _stepSize : _stepSize;
+                if (_val - step > _valMin)
+                    _val -= step;
+                else
+                    _val = _valMin;
+            }
+        } else {
+            _cursor++;
+            if (_cursor >= _selCnt) {
+                _cursor = 0;
+            }
+        }
+    } else {
+        _selection = _MENU_MAIN;
+    }
+}
+
+void Display::_prevEvent()
+{
+    if (_selection) {
+        if (_inputValueActive) {
+            if (_val < _valMax) {
+                int step = (_enableBigSteps) ? _BIG_STEP * _stepSize : _stepSize;
+                if (_val < step)
+                    _val = step;
+                else if (_val + step < _valMax)
+                    _val += step;
+                else
+                    _val = _valMax;
+            }
+        } else {
+            if (_cursor == 0) {
+                _cursor = _selCnt;
+            }
+            _cursor--;
+        }
+    } else {
+        _selection = _MENU_MAIN;
+    }
+}
+
+void Display::_saveCursorPosForLevel(MenuLevel level)
+{
+    switch (level) {
+    case MenuLevel_1:
+        _cur_l1 = _cursor;
+        break;
+    case MenuLevel_2:
+        _cur_l2 = _cursor;
+        break;
+    case MenuLevel_3:
+        _cur_l3 = _cursor;
+        break;
+    }
+    _prevCursor = _cursor;
+    _cursor = 0;
+}
+
+void Display::_restrictInputValue(int min, int max, Precision p=Precision_0)
+{
+    char s1[10];
+    char s2[10];
+    switch (p) {
+    case Precision_1:
+        if (min % 10 == 0)
+            sprintf(s1, "%d", min / 10);
+        else
+            sprintf(s1, "%d.%.1d", min / 10, min % 10);
+        if (max % 10 == 0)
+            sprintf(s2, "%d", max / 10);
+        else
+            sprintf(s2, "%d.%.1d", max / 10, max % 10);
+        break;
+    case Precision_2:
+        if (min % 100 == 0)
+            sprintf(s1, "%d", min / 100);
+        else
+            sprintf(s1, "%d.%.2d", min / 100, min % 100);
+        if (max % 100 == 0)
+            sprintf(s2, "%d", max / 100);
+        else
+            sprintf(s2, "%d.%.2d", max / 100, max % 100);
+        break;
+    default:
+        sprintf(s1, "%d", min);
+        sprintf(s2, "%d", max);
+    }
+    _valMin = min;
+    _valMax = max;
+    sprintf(_text2, "min: %s, max: %s", s1, s2);
+}
+
+void Display::_inputValue(const uint8_t stepSize, const char *title, const char *val=nullptr, const char *text=nullptr)
+{
+    if (!val) {
+        val = _text;
+    } else if (val == "__float__") {
+        sprintf(_text, "%d.%.2d", _val / 100, _val % 100);
+        val = _text;
+    }
+    if (!text)
+        text = _text2;
+    _inputValueActive = true;
+    _stepSize = stepSize;
+    my_UserInterfaceInputValueString(&u8g2, title, text, val);
+}
+
+uint8_t Display::_restoreCursor()
+{
+    switch (_menu_depth) {
+    case 1:
+        _cursor = _cur_l1;
+        break;
+    case 2:
+        _cursor = _cur_l2;
+        break;
+    case 3:
+        _cursor = _cur_l3;
+        break;
+    default:
+        _cursor = 0;
+        _selection = 0;
+    }
+    return _menu_depth;
+}

src/display/display.h

@@ -0,0 +1,178 @@
+#ifndef MY_DISPLAY_H_INCLUDED
+#define MY_DISPLAY_H_INCLUDED
+
+#include <U8g2lib.h>
+#include "../common.h"
+
+//#define _STD_FONT u8g2_font_ncenB10_te
+//#define _FIRS_LINE_Y 11
+//#define _STD_LINEHEIGHT 12
+#define _STD_FONT u8g2_font_fub11_tf
+#define _FIRS_LINE_Y 12
+#define _STD_LINEHEIGHT 13
+#define _SEL_FONT u8g2_font_6x10_tf
+#define _FIRS_LINE_Y 12
+#define _STD_LINEHEIGHT 13
+// Mit der Schriftart u8g2_font_ncenB10_te stellt \xb0 das °-Zeichen dar
+
+#define _BEGIN_FAST_STEPS_DELAY 500
+#define _BEGIN_BIG_STEPS_DELAY 3000
+#define _FAST_STEP_MS 50
+#define _BIG_STEP 10
+
+#define _BACK_TO_HOME_SCREEN 1
+
+#define _MENU_MAIN 1
+#define _MENU_SYSTEM 10
+#define _MENU_SETTINGS_MODBUS 11
+#define _MENU_TEMPERATURE 12
+#define _MENU_PRESSURE 13
+#define _SELECTION_TEMPERATURE_ENABLED 100
+#define _SELECTION_TEMPERATURE_SETPOINT 101
+#define _SELECTION_TEMPERATURE_HYSTERESIS 102
+#define _SELECTION_PRESSURE_ENABLE_INCREASE 110
+#define _SELECTION_PRESSURE_ENABLE_DECREASE 111
+#define _SELECTION_PRESSURE_SETPOINT 115
+#define _SELECTION_PRESSURE_HYSTERESIS 116
+#define _SELECTION_MODBUS_BAUDRATE 150
+#define _SELECTION_MODBUS_ADDRESS 151
+#define _SELECTION_MODBUS_DELAY 152
+#define _SELECTION_P_SENSOR 200
+#define _SELECTION_RESET 255
+
+#define _VERIFY_ADMIN 253
+#define _ADMIN_CODE 42
+
+#define _POS_TEMPERATURE_MENU 0
+#define _POS_TEMPERATURE_ENABLED 0
+#define _POS_TEMPERATURE_SETPOINT 1
+#define _POS_TEMPERATURE_HYSTERESIS 2
+#define _POS_PRESSURE_MENU 1
+#define _POS_PRESSURE_ENABLE_INCREASE 0
+#define _POS_PRESSURE_ENABLE_DECREASE 1
+#define _POS_PRESSURE_SETPOINT 2
+#define _POS_PRESSURE_HYSTERESIS 3
+#define _POS_SYSTEM 2
+#define _POS_MODBUS_MENU 0
+#define _POS_MODBUS_ADDRESS 0
+#define _POS_MODBUS_BAUDRATE 1
+#define _POS_MODBUS_DELAY 2
+#define _POS_P_SENSOR_SELECTION 1
+#define _POS_P_SMC_1_5V_0_5BAR 0
+#define _POS_P_GEMS_0_5V_0_6BAR 1
+#define _POS_RESET 3
+
+#define _POS_BAUDRATE_300 0
+#define _POS_BAUDRATE_1200 1
+#define _POS_BAUDRATE_2400 2
+#define _POS_BAUDRATE_4800 3
+#define _POS_BAUDRATE_9600 4
+#define _POS_BAUDRATE_19200 5
+#define _POS_BAUDRATE_38400 6
+#define _POS_BAUDRATE_57600 7
+#define _POS_BAUDRATE_115200 8
+
+extern "C" uint8_t my_UserInterfaceMessage(u8g2_t *u8g2, const char *title1, const char *title2, const char *title3, const char *buttons, uint8_t cursor);
+extern "C" uint8_t my_UserInterfaceSelectionList(u8g2_t *u8g2, const char *title, uint8_t start_pos, const char *sl);
+// extern "C" void my_UserInterfaceInputValue(u8g2_t *u8g2, const char *title, const char *pre, uint8_t value, uint8_t digits, const char *post);
+extern "C" void my_UserInterfaceInputValueString(u8g2_t *u8g2, const char *title, const char *sub, const char *text);
+
+class Display : public U8G2_ST7920_128X64_2_HW_SPI
+{
+
+private:
+    enum MenuLevel : int8_t {
+        MenuLevel_1, MenuLevel_2, MenuLevel_3
+    };
+    enum Precision : int8_t {
+        Precision_0, Precision_1, Precision_2
+    };
+
+    uint8_t _bgLightAnalog = 255; // Wie stark die Displaybeleuchtung ist
+    bool _bgLightBool = true; // Ob die Displaybeleuchtung an ist (egal wie stark)
+    char _text[50]; // Buffer für Texte
+    char _text2[30]; // Buffer für Texte
+    uint8_t _selection; // welche Auswahl gerendert werden soll
+    uint8_t _cursor; // aktuelle Auswahl-Cursorposition
+    uint8_t _prevCursor; // letzte Auswahl-Cursorposition
+    uint8_t _cur_l1; // Cursorposition in Ebene 1
+    uint8_t _cur_l2; // Cursorposition in Ebene 2
+    uint8_t _cur_l3; // Cursorposition in Ebene 3
+    uint8_t _menu_depth; // Im wievielten Untermenü man gerade ist
+    uint8_t _selCnt; // Anzahl der Auswahlmöglichkeiten
+    bool _inputValueActive; // Ob gerade ein Wert eingegeben wird
+    int _val; // Der eingegebene Wert
+    int _valMin; // Der kleinstmögliche einzugebende Wert
+    int _valMax; // Der größtmögliche einzugebende Wert
+    unsigned long _prevT;
+    bool _enableBigSteps; // Ob große Schritte (_BIG_STEP) durchgeführt werden sollen
+    unsigned long _checkFastStepTime; // letzte Zeit, zu der ein entsprechender Button NICHT gedrückt war
+    unsigned long _lastFastStep; // letzte Zeit, zu der ein schneller Schritt ausgeführt wurde
+    int _stepSize; // Um wieviel der entsprechende Wert auf einmal geändert werden soll
+    // String _str1, _str2;
+
+    parameters *_params;
+    values *_vals;
+    modbusParameters *_modbusParams;
+    PSensor *_pSensor;
+    valveStates *_vStates;
+
+    void _saveCursorPosForLevel(MenuLevel);
+    uint8_t _restoreCursor();
+    void _baudrateCursorPos();
+    void _setModbusBaudrate();
+    void _select();
+    void _select(const uint8_t, const bool restoreCursor=false);
+    uint8_t _event();
+    void _nextEvent();
+    void _prevEvent();
+    void _home();
+    void _inputValue(const uint8_t stepSize, const char *title, const char *text=nullptr, const char *val=nullptr);
+    void _restrictInputValue(int min, int max, Precision p=Precision_0);
+
+public:
+
+    const uint8_t btnNext;
+    const uint8_t btnPrev;
+    const uint8_t btnSelect;
+    const uint8_t btnCancel;
+    const uint8_t bgLed;
+
+    Display(uint8_t cs,
+            uint8_t btnNext,
+            uint8_t btnPrev,
+            uint8_t btnSelect,
+            uint8_t btnCancel,
+            uint8_t bgLED,
+            parameters*,
+            values*,
+            modbusParameters*,
+            PSensor*,
+            valveStates*);
+
+    void init();
+    void process();
+
+    void modbusProblem();
+    void oneWireDevicesDetected(uint8_t count);
+    void tooMuchOneWireDevicesDetected(uint8_t actual, uint8_t max);
+    void noOneWireDevicesDetected();
+    void greeting();
+
+    void bgLight(uint8_t);
+    void bgLight(int val) {bgLight((uint8_t) val);};
+    void bgLight(bool);
+    bool bgLightIncrease(uint8_t step=1);
+    bool bgLightDecrease(uint8_t step=1);
+    uint8_t bgLightAnalog();
+    bool bgLightState();
+
+    void (*reset)() = 0;
+
+    /* Callback-Funktionen */
+    void(*setParams)(const parameters&);
+    void(*setModbusParams)(const modbusParameters&);
+    void(*setPSensor)(const PSensor&);
+};
+
+#endif // MY_DISPLAY_H_INCLUDED

src/display/nonblockingUserinterface.cpp

@@ -0,0 +1,340 @@
+/*
+
+  nonblockingUserinterface.cpp
+
+  These original files were modified to this file by brunotic:
+    U8g2/src/clib/u8g2_message.c
+    U8g2/src/clib/u8g2_selection_list.c
+    U8g2/src/clib/u8g2_input_value.c
+
+  |----------------
+  | ORIGINAL TEXT:
+  |----------------
+  
+  Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+  Copyright (c) 2016, olikraus@gmail.com
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification, 
+  are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice, this list 
+    of conditions and the following disclaimer.
+    
+  * Redistributions in binary form must reproduce the above copyright notice, this 
+    list of conditions and the following disclaimer in the documentation and/or other 
+    materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
+  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
+  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+  
+*/
+
+#include <U8g2lib.h>
+
+extern "C" {
+
+#define SPACE_BETWEEN_BUTTONS_IN_PIXEL 6
+#define SPACE_BETWEEN_TEXT_AND_BUTTONS_IN_PIXEL 3
+
+static uint8_t my_draw_button_line(u8g2_t *u8g2, u8g2_uint_t y, u8g2_uint_t w, uint8_t cursor, const char *s)
+{
+  u8g2_uint_t button_line_width;
+  uint8_t i;
+  uint8_t cnt;
+  uint8_t is_invert;
+  u8g2_uint_t d;
+  u8g2_uint_t x;
+  cnt = u8x8_GetStringLineCnt(s);
+  /* calculate the width of the button line */
+  button_line_width = 0;
+  for( i = 0; i < cnt; i++ ) {
+    button_line_width += u8g2_GetUTF8Width(u8g2, u8x8_GetStringLineStart(i, s));
+  }
+  button_line_width += (cnt-1)*SPACE_BETWEEN_BUTTONS_IN_PIXEL;	/* add some space between the buttons */
+  /* calculate the left offset */
+  d = 0;
+  if ( button_line_width < w ) {
+    d = w;
+    d -= button_line_width;
+    d /= 2;
+  }
+  /* draw the buttons */
+  x = d;
+  for( i = 0; i < cnt; i++ ) {
+    is_invert = 0;
+    if ( i == cursor )
+      is_invert = 1;
+    u8g2_DrawUTF8Line(u8g2, x, y, 0, u8x8_GetStringLineStart(i, s), 1, is_invert);
+    x += u8g2_GetUTF8Width(u8g2, u8x8_GetStringLineStart(i, s));
+    x += SPACE_BETWEEN_BUTTONS_IN_PIXEL;
+  }
+  /* return the number of buttons */
+  return cnt;
+}
+
+/*
+  title1:	Multiple lines,separated by '\n'
+  title2:	A single line/string which is terminated by '\0' or '\n' . "title2" accepts the return value from u8x8_GetStringLineStart()
+  title3:	Multiple lines,separated by '\n'
+  buttons:	one more more buttons separated by '\n' and terminated with '\0'
+  cursor: highlighted cursor position
+  returns the number of buttons
+  side effects:
+    u8g2_SetFontDirection(u8g2, 0);
+    u8g2_SetFontPosBaseline(u8g2);
+*/
+
+uint8_t my_UserInterfaceMessage(u8g2_t *u8g2, const char *title1, const char *title2, const char *title3, const char *buttons, uint8_t cursor)
+{
+  uint8_t height;
+  uint8_t line_height;
+  u8g2_uint_t pixel_height;
+  u8g2_uint_t y, yy;
+  uint8_t button_cnt;
+  /* only horizontal strings are supported, so force this here */
+  u8g2_SetFontDirection(u8g2, 0);
+  /* force baseline position */
+  u8g2_SetFontPosBaseline(u8g2);
+  /* calculate line height */
+  line_height = u8g2_GetAscent(u8g2);
+  line_height -= u8g2_GetDescent(u8g2);
+  /* calculate overall height of the message box in lines*/
+  height = 1;	/* button line */
+  height += u8x8_GetStringLineCnt(title1);
+  if ( title2 != NULL )
+    height++;
+  height += u8x8_GetStringLineCnt(title3);
+  /* calculate the height in pixel */
+  pixel_height = height;
+  pixel_height *= line_height;
+  /* ... and add the space between the text and the buttons */
+  pixel_height += SPACE_BETWEEN_TEXT_AND_BUTTONS_IN_PIXEL;
+  /* calculate offset from top */
+  y = 0;
+  if ( pixel_height < u8g2_GetDisplayHeight(u8g2) ) {
+    y = u8g2_GetDisplayHeight(u8g2);
+    y -= pixel_height;
+    y /= 2;
+  }
+  y += u8g2_GetAscent(u8g2);  
+  u8g2_FirstPage(u8g2);
+  do {
+	  yy = y;
+	  /* draw message box */
+	  yy += u8g2_DrawUTF8Lines(u8g2, 0, yy, u8g2_GetDisplayWidth(u8g2), line_height, title1);
+	  if ( title2 != NULL ) {
+	    u8g2_DrawUTF8Line(u8g2, 0, yy, u8g2_GetDisplayWidth(u8g2), title2, 0, 0);
+	    yy+=line_height;
+	  }
+	  yy += u8g2_DrawUTF8Lines(u8g2, 0, yy, u8g2_GetDisplayWidth(u8g2), line_height, title3);
+	  yy += SPACE_BETWEEN_TEXT_AND_BUTTONS_IN_PIXEL;
+	  button_cnt = my_draw_button_line(u8g2, yy, u8g2_GetDisplayWidth(u8g2), cursor, buttons);
+  } while( u8g2_NextPage(u8g2) );
+  return button_cnt;
+}
+
+#define MY_BORDER_SIZE 1
+
+/*
+  selection list with string line
+  returns line height
+*/
+// static u8g2_uint_t my_draw_selection_list_line(u8g2_t *u8g2, u8sl_t *u8sl, u8g2_uint_t y, uint8_t idx, const char *s) U8G2_NOINLINE;
+static u8g2_uint_t my_draw_selection_list_line(u8g2_t *u8g2, u8sl_t *u8sl, u8g2_uint_t y, uint8_t idx, const char *s)
+{
+  u8g2_uint_t yy;
+  uint8_t border_size = 0;
+  uint8_t is_invert = 0;
+  u8g2_uint_t line_height = u8g2_GetAscent(u8g2) - u8g2_GetDescent(u8g2) + MY_BORDER_SIZE;
+  /* calculate offset from display upper border */
+  yy = idx;
+  yy -= u8sl->first_pos;
+  yy *= line_height;
+  yy += y;
+  /* check whether this is the current cursor line */
+  if ( idx == u8sl->current_pos )
+  {
+    border_size = MY_BORDER_SIZE;
+    is_invert = 1;
+  }
+  /* get the line from the array */
+  s = u8x8_GetStringLineStart(idx, s);
+  /* draw the line */
+  if ( s == NULL )
+    s = "";
+  u8g2_DrawUTF8Line(u8g2, MY_BORDER_SIZE, y, u8g2_GetDisplayWidth(u8g2) - 2 * MY_BORDER_SIZE, s, border_size, is_invert);
+  return line_height;
+}
+
+static void my_DrawSelectionList(u8g2_t *u8g2, u8sl_t *u8sl, u8g2_uint_t y, const char *s)
+{
+  uint8_t i;
+  for( i = 0; i < u8sl->visible; i++ )
+  {
+    y += my_draw_selection_list_line(u8g2, u8sl, y, i + u8sl->first_pos, s);
+  }
+}
+
+
+/*
+  title: 		NULL for no title, valid str for title line. Can contain mutliple lines, separated by '\n'
+  start_pos: 	default position for the cursor, first line is 1.
+  sl:			string list (list of strings separated by \n)
+  returns the number of options (depending on sl)
+  side effects:
+    u8g2_SetFontDirection(u8g2, 0);
+    u8g2_SetFontPosBaseline(u8g2);
+	
+*/
+uint8_t my_UserInterfaceSelectionList(u8g2_t *u8g2, const char *title, uint8_t start_pos, const char *sl)
+{
+  u8sl_t u8sl;
+  u8g2_uint_t yy;
+  u8g2_uint_t line_height = u8g2_GetAscent(u8g2) - u8g2_GetDescent(u8g2) + MY_BORDER_SIZE;
+  uint8_t title_lines = u8x8_GetStringLineCnt(title);
+  uint8_t display_lines;
+  // if ( start_pos > 0 )	/* issue 112 */
+  //   start_pos--;		/* issue 112 */
+  if ( title_lines > 0 )
+  {
+	display_lines = (u8g2_GetDisplayHeight(u8g2) - 3) / line_height;
+	u8sl.visible = display_lines;
+	u8sl.visible -= title_lines;
+  }
+  else
+  {
+	display_lines = u8g2_GetDisplayHeight(u8g2) / line_height;
+	u8sl.visible = display_lines;
+  }
+  u8sl.total = u8x8_GetStringLineCnt(sl);
+  u8sl.first_pos = 0;
+  u8sl.current_pos = start_pos;
+  if ( u8sl.current_pos >= u8sl.total )
+    u8sl.current_pos = u8sl.total - 1;
+  if ( u8sl.first_pos + u8sl.visible <= u8sl.current_pos )
+    u8sl.first_pos = u8sl.current_pos - u8sl.visible + 1;
+  u8g2_SetFontPosBaseline(u8g2);
+  u8g2_FirstPage(u8g2);
+  do {
+    yy = u8g2_GetAscent(u8g2);
+    if ( title_lines > 0 )
+    {
+      yy += u8g2_DrawUTF8Lines(u8g2, 0, yy, u8g2_GetDisplayWidth(u8g2), line_height, title);
+      u8g2_DrawHLine(u8g2, 0, yy-line_height- u8g2_GetDescent(u8g2) + 1, u8g2_GetDisplayWidth(u8g2));
+      yy += 3;
+    }
+    my_DrawSelectionList(u8g2, &u8sl, yy, sl);
+  } while( u8g2_NextPage(u8g2) );
+  return u8sl.total;
+}
+
+void my_UserInterfaceInputValueString(u8g2_t *u8g2, const char *title, const char *sub, const char *text)
+{
+  uint8_t line_height;
+  uint8_t height;
+  u8g2_uint_t pixel_height;
+  u8g2_uint_t  x, y, yy;
+  u8g2_uint_t  pixel_width;
+  /* only horizontal strings are supported, so force this here */
+  u8g2_SetFontDirection(u8g2, 0);
+  /* force baseline position */
+  u8g2_SetFontPosBaseline(u8g2);
+  /* calculate line height */
+  line_height = u8g2_GetAscent(u8g2);
+  line_height -= u8g2_GetDescent(u8g2);
+  /* calculate overall height of the input value box */
+  height = 1;	/* value input line */
+  height += u8x8_GetStringLineCnt(title);
+  height += u8x8_GetStringLineCnt(sub);
+  /* calculate the height in pixel */
+  pixel_height = height;
+  pixel_height *= line_height;
+  /* calculate offset from top */
+  y = 0;
+  if ( pixel_height < u8g2_GetDisplayHeight(u8g2)  )
+  {
+    y = u8g2_GetDisplayHeight(u8g2);
+    y -= pixel_height;
+    y /= 2;
+  }
+  /* calculate offset from left for the label */
+  x = 0;
+  pixel_width = u8g2_GetUTF8Width(u8g2, text);
+  if ( pixel_width < u8g2_GetDisplayWidth(u8g2) ) {
+    x = u8g2_GetDisplayWidth(u8g2);
+    x -= pixel_width;
+    x /= 2;
+  }
+  u8g2_FirstPage(u8g2);
+  do {
+    yy = y;
+    yy += u8g2_DrawUTF8Lines(u8g2, 0, yy, u8g2_GetDisplayWidth(u8g2), line_height, title);
+    yy += u8g2_DrawUTF8Lines(u8g2, 0, yy, u8g2_GetDisplayWidth(u8g2), line_height, sub);
+    u8g2_DrawUTF8(u8g2, x, yy, text);
+  } while( u8g2_NextPage(u8g2) );
+}
+
+// void my_UserInterfaceInputValue(u8g2_t *u8g2, const char *title, const char *pre, uint8_t value, uint8_t digits, const char *post)
+// {
+//   uint8_t line_height;
+//   uint8_t height;
+//   u8g2_uint_t pixel_height;
+//   u8g2_uint_t  y, yy;
+//   u8g2_uint_t  pixel_width;
+//   u8g2_uint_t  x, xx;
+//   /* only horizontal strings are supported, so force this here */
+//   u8g2_SetFontDirection(u8g2, 0);
+//   /* force baseline position */
+//   u8g2_SetFontPosBaseline(u8g2);
+//   /* calculate line height */
+//   line_height = u8g2_GetAscent(u8g2);
+//   line_height -= u8g2_GetDescent(u8g2);
+//   /* calculate overall height of the input value box */
+//   height = 1;	/* value input line */
+//   height += u8x8_GetStringLineCnt(title);
+//   /* calculate the height in pixel */
+//   pixel_height = height;
+//   pixel_height *= line_height;
+//   /* calculate offset from top */
+//   y = 0;
+//   if ( pixel_height < u8g2_GetDisplayHeight(u8g2)  )
+//   {
+//     y = u8g2_GetDisplayHeight(u8g2);
+//     y -= pixel_height;
+//     y /= 2;
+//   }
+//   /* calculate offset from left for the label */
+//   x = 0;
+//   pixel_width = u8g2_GetUTF8Width(u8g2, pre);
+//   pixel_width += u8g2_GetUTF8Width(u8g2, "0") * digits;
+//   pixel_width += u8g2_GetUTF8Width(u8g2, post);
+//   if ( pixel_width < u8g2_GetDisplayWidth(u8g2) ) {
+//     x = u8g2_GetDisplayWidth(u8g2);
+//     x -= pixel_width;
+//     x /= 2;
+//   }
+//   u8g2_FirstPage(u8g2);
+//   do {
+//     yy = y;
+//     yy += u8g2_DrawUTF8Lines(u8g2, 0, yy, u8g2_GetDisplayWidth(u8g2), line_height, title);
+//     xx = x;
+//     xx += u8g2_DrawUTF8(u8g2, xx, yy, pre);
+//     xx += u8g2_DrawUTF8(u8g2, xx, yy, u8x8_u8toa(value, digits));
+//     u8g2_DrawUTF8(u8g2, xx, yy, post);
+//   } while( u8g2_NextPage(u8g2) );
+// }
+
+} //extern "C"

src/modbus/LICENSE

@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+  To protect your rights, we need to prevent others from denying you
+these rights or asking you to surrender the rights.  Therefore, you have
+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must pass on to the recipients the same
+freedoms that you received.  You must make sure that they, too, receive
+or can get the source code.  And you must show them these terms so they
+know their rights.
+
+  Developers that use the GNU GPL protect your rights with two steps:
+(1) assert copyright on the software, and (2) offer you this License
+giving you legal permission to copy, distribute and/or modify it.
+
+  For the developers' and authors' protection, the GPL clearly explains
+that there is no warranty for this free software.  For both users' and
+authors' sake, the GPL requires that modified versions be marked as
+changed, so that their problems will not be attributed erroneously to
+authors of previous versions.
+
+  Some devices are designed to deny users access to install or run
+modified versions of the software inside them, although the manufacturer
+can do so.  This is fundamentally incompatible with the aim of
+protecting users' freedom to change the software.  The systematic
+pattern of such abuse occurs in the area of products for individuals to
+use, which is precisely where it is most unacceptable.  Therefore, we
+have designed this version of the GPL to prohibit the practice for those
+products.  If such problems arise substantially in other domains, we
+stand ready to extend this provision to those domains in future versions
+of the GPL, as needed to protect the freedom of users.
+
+  Finally, every program is threatened constantly by software patents.
+States should not allow patents to restrict development and use of
+software on general-purpose computers, but in those that do, we wish to
+avoid the special danger that patents applied to a free program could
+make it effectively proprietary.  To prevent this, the GPL assures that
+patents cannot be used to render the program non-free.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                       TERMS AND CONDITIONS
+
+  0. Definitions.
+
+  "This License" refers to version 3 of the GNU General Public License.
+
+  "Copyright" also means copyright-like laws that apply to other kinds of
+works, such as semiconductor masks.
+
+  "The Program" refers to any copyrightable work licensed under this
+License.  Each licensee is addressed as "you".  "Licensees" and
+"recipients" may be individuals or organizations.
+
+  To "modify" a work means to copy from or adapt all or part of the work
+in a fashion requiring copyright permission, other than the making of an
+exact copy.  The resulting work is called a "modified version" of the
+earlier work or a work "based on" the earlier work.
+
+  A "covered work" means either the unmodified Program or a work based
+on the Program.
+
+  To "propagate" a work means to do anything with it that, without
+permission, would make you directly or secondarily liable for
+infringement under applicable copyright law, except executing it on a
+computer or modifying a private copy.  Propagation includes copying,
+distribution (with or without modification), making available to the
+public, and in some countries other activities as well.
+
+  To "convey" a work means any kind of propagation that enables other
+parties to make or receive copies.  Mere interaction with a user through
+a computer network, with no transfer of a copy, is not conveying.
+
+  An interactive user interface displays "Appropriate Legal Notices"
+to the extent that it includes a convenient and prominently visible
+feature that (1) displays an appropriate copyright notice, and (2)
+tells the user that there is no warranty for the work (except to the
+extent that warranties are provided), that licensees may convey the
+work under this License, and how to view a copy of this License.  If
+the interface presents a list of user commands or options, such as a
+menu, a prominent item in the list meets this criterion.
+
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src/modbus/ModbusRTUSlave.cpp

@@ -0,0 +1,491 @@
+#include "ModbusRTUSlave.h"
+#include "utility/LinkedList.h"
+
+
+ModbusRTUSlave::ModbusRTUSlave(HardwareSerial* serialport, const uint8_t controlPinArg)
+  : ser(serialport)
+  , controlPin(controlPinArg)
+  , isReading(true)
+  , rWords(new wordsList())
+  , rBits(new bitsList())
+  , rwWords(new wordsList())
+  , rwBits(new bitsList())
+{
+  pinMode(controlPin, OUTPUT);
+  digitalWrite(controlPin, LOW);
+}
+
+void ModbusRTUSlave::begin(byte address, uint32_t baudrate) 
+{
+	if (connected) {
+		ser->end();
+	}
+	slaveAddress = address;
+	ser->begin(baudrate);
+	ResCnt=0;
+	connected = true;
+}
+
+void ModbusRTUSlave::end()
+{
+	if (connected) {
+		ser->end();
+		connected = false;
+	}
+}
+
+bool ModbusRTUSlave::addCoilArea(u16 address, u8* values, int cnt)
+{
+	if(getBitAddress(rwBits, address)==NULL)
+	{
+		rwBits->add(new ModbusRTUSlaveBitAddress(address, values, cnt));
+		return true;
+	}
+	return false;
+}
+
+bool ModbusRTUSlave::addDiscreteInputArea(u16 address, u8* values, int cnt)
+{
+	if(getBitAddress(rBits, address)==NULL)
+	{
+		rBits->add(new ModbusRTUSlaveBitAddress(address, values, cnt));
+		return true;
+	}
+	return false;
+}
+
+bool ModbusRTUSlave::addHoldingRegisterArea(u16 address, u16* values, int cnt)
+{
+	if(getWordAddress(rwWords, address)==NULL)
+	{
+		rwWords->add(new ModbusRTUSlaveWordAddress(address, values, cnt));
+		return true;
+	}
+	return false;
+}
+
+bool ModbusRTUSlave::addInputRegisterArea(u16 address, u16* values, int cnt)
+{
+	if(getWordAddress(rWords, address)==NULL)
+	{
+		rWords->add(new ModbusRTUSlaveWordAddress(address, values, cnt));
+		return true;
+	}
+	return false;
+}
+
+ModbusRTUSlaveWordAddress* ModbusRTUSlave::getWordAddress(wordsList *words, u16 Addr)
+{
+	ModbusRTUSlaveWordAddress* ret=NULL;
+	for(int i = 0; i < words->size(); i++)
+	{
+		ModbusRTUSlaveWordAddress* a = words->get(i);
+		if(a!=NULL && Addr >= a->addr && Addr < a->addr + a->len) ret=a;
+	}
+	return ret;
+}
+ModbusRTUSlaveBitAddress* ModbusRTUSlave::getBitAddress(bitsList *bits, u16 Addr)
+{
+	ModbusRTUSlaveBitAddress* ret=NULL;
+	for(int i = 0; i < bits->size(); i++)
+	{
+		ModbusRTUSlaveBitAddress* a = bits->get(i);
+		if(a!=NULL && Addr >= a->addr && Addr < a->addr + (a->len*8)) ret=a;
+	}
+	return ret;
+}
+
+ModbusRTUSlaveWordAddress* ModbusRTUSlave::getWordAddress(wordsList *words, u16 Addr, u16 Len)
+{
+	ModbusRTUSlaveWordAddress* ret=NULL;
+	for(int i = 0; i < words->size(); i++)
+	{
+		ModbusRTUSlaveWordAddress* a = words->get(i);
+		if(a!=NULL && Addr >= a->addr && Addr+Len <= a->addr + a->len) ret=a;
+	}
+	return ret;
+}
+ModbusRTUSlaveBitAddress* ModbusRTUSlave::getBitAddress(bitsList *bits, u16 Addr, u16 Len)
+{
+	ModbusRTUSlaveBitAddress* ret=NULL;
+	for(int i = 0; i < bits->size(); i++)
+	{
+		ModbusRTUSlaveBitAddress* a = bits->get(i);
+		if(a!=NULL && Addr >= a->addr && Addr+Len <= a->addr + (a->len*8)) ret=a;
+	}
+	return ret;
+}
+
+
+void ModbusRTUSlave::process()
+{
+	bool bvalid = true;
+	while(isDataAvail()) 
+	{
+		byte d = doRead();
+
+		lstResponse[ResCnt++]=d;
+		if(ResCnt>=4)
+		{
+			requestedSlave = lstResponse[0];
+			if(requestedSlave == slaveAddress)
+			{
+				fnCode = lstResponse[1];
+	            requestedRegister = (lstResponse[2] << 8) | lstResponse[3];
+				receivedLastRequest = micros();
+				switch(fnCode)
+				{
+					case 1: // read coils
+						if(ResCnt >= 8)
+						{
+							readCoilOrDiscreteInput(rwBits, bvalid);
+						}
+						break;
+					case 2: // read discrete inputs
+						if(ResCnt >= 8)
+						{
+							readCoilOrDiscreteInput(rBits, bvalid);
+						}
+						break;
+					case 3: // read holding registers
+						if(ResCnt >= 8)
+						{
+							readHoldingOrInputRegister(rwWords, bvalid);
+						}
+						break;
+					case 4: // read input registers
+						if(ResCnt >= 8)
+						{
+							readHoldingOrInputRegister(rWords, bvalid);
+						}
+						break;
+					case 5: // write single coil
+						if(ResCnt >= 8)
+						{
+							u16 Data = (lstResponse[4] << 8) | lstResponse[5];
+							byte hi = 0xFF, lo = 0xFF;
+							getCRC(lstResponse,300, 0, 6, &hi, &lo);
+							ModbusRTUSlaveBitAddress *a = getBitAddress(rwBits, requestedRegister);
+							if (a != NULL && lstResponse[6] == hi && lstResponse[7] == lo)
+							{
+								u16 stidx = (requestedRegister - a->addr) / 8;
+
+								bitWrite(a->values[stidx], (requestedRegister - a->addr)%8, Data==0xFF00);
+
+								byte ret[8];
+								ret[0]=requestedSlave;	
+								ret[1]=fnCode;	
+								ret[2]=((requestedRegister&0xFF00)>>8);
+								ret[3]=((requestedRegister&0x00FF));
+								ret[4]=((Data&0xFF00)>>8);
+								ret[5]=((Data&0x00FF));
+  							    byte hi = 0xFF, lo = 0xFF;
+								getCRC(ret, 8, 0, 6, &hi, &lo);
+								ret[6]=hi;
+								ret[7]=lo;
+								doWrite(ret, 8);
+								
+								ResCnt=0;
+							}
+							else bvalid = false;
+						}
+						break;
+					case 6: // write single register
+						if(ResCnt >= 8)
+						{
+							u16 Data = (lstResponse[4] << 8) | lstResponse[5];
+							byte hi = 0xFF, lo = 0xFF;
+							getCRC(lstResponse,300, 0, 6, &hi, &lo);
+							ModbusRTUSlaveWordAddress *a = getWordAddress(rwWords, requestedRegister);
+							if (a != NULL && lstResponse[6] == hi && lstResponse[7] == lo)
+							{
+								u16 stidx = requestedRegister - a->addr;
+
+								a->values[stidx] = Data;
+
+								byte ret[8];
+								ret[0]=requestedSlave;	
+								ret[1]=fnCode;	
+								ret[2]=((requestedRegister&0xFF00)>>8);
+								ret[3]=((requestedRegister&0x00FF));
+								ret[4]=((Data&0xFF00)>>8);
+								ret[5]=((Data&0x00FF));
+  							    byte hi = 0xFF, lo = 0xFF;
+								getCRC(ret, 8, 0, 6, &hi, &lo);
+								ret[6]=hi;
+								ret[7]=lo;
+								doWrite(ret, 8);
+
+								ResCnt=0;
+							}
+							else bvalid = false;
+						}
+						break;
+					case 15: // write multiple coils
+						if(ResCnt >= 7)
+						{
+							u16 Length = (lstResponse[4] << 8) | lstResponse[5];
+							u8 ByteCount = lstResponse[6];
+							if(ResCnt >= 9+ByteCount)
+							{
+								byte hi = 0xFF, lo = 0xFF;
+								getCRC(lstResponse,300, 0, 7 + ByteCount, &hi, &lo);
+								if(lstResponse[(9 + ByteCount - 2)] == hi && lstResponse[(9 + ByteCount - 1)] == lo)
+								{
+									ModbusRTUSlaveBitAddress *a = getBitAddress(rwBits, requestedRegister, Length);
+									if (a != NULL) 
+									{
+										u16 stidx = (requestedRegister - a->addr) / 8;
+										int ng=(requestedRegister - a->addr) % 8;
+										int ns=stidx;
+
+										for(int i=7; i<7+ByteCount;i++)
+										{
+											byte val = lstResponse[i];
+											for(int j=0;j<8;j++)
+											{
+												bitWrite(a->values[ns], ng++, bitRead(val,j));
+												if(ng==8){ns++;ng=0;}
+											}
+										}
+
+										if(bvalid)
+										{
+											byte ret[8];
+											ret[0]=requestedSlave;	
+											ret[1]=fnCode;	
+											ret[2]=((requestedRegister&0xFF00)>>8);
+											ret[3]=((requestedRegister&0x00FF));
+											ret[4]=((Length&0xFF00)>>8);
+											ret[5]=((Length&0x00FF));
+											byte hi = 0xFF, lo = 0xFF;
+											getCRC(ret, 8, 0, 6, &hi, &lo);
+											ret[6]=hi;
+											ret[7]=lo;
+											doWrite(ret, 8);
+
+											ResCnt=0;
+										}
+									}
+								}
+								else bvalid=false;
+							}
+						}
+						break; 
+					case 16: // write multiple registers
+						if(ResCnt >= 7)
+						{
+							u16 Length = (lstResponse[4] << 8) | lstResponse[5];
+							u8 ByteCount = lstResponse[6];
+							if(ResCnt >= 9+ByteCount)
+							{
+								byte hi = 0xFF, lo = 0xFF;
+								getCRC(lstResponse,300, 0, 7 + ByteCount, &hi, &lo);
+								if(lstResponse[(9 + ByteCount - 2)] == hi && lstResponse[(9 + ByteCount - 1)] == lo)
+								{
+									for(int i=7; i<7+ByteCount;i+=2)
+									{
+										u16 data = lstResponse[i] << 8 | lstResponse[i+1];
+										ModbusRTUSlaveWordAddress *a = getWordAddress(rwWords, requestedRegister + ((i-7)/2));
+										if (a != NULL) { a->values[(requestedRegister + ((i-7)/2)) - a->addr] = data;	}
+										else { bvalid=false; break; }
+									}
+									if(bvalid)
+									{
+										byte ret[8];
+										ret[0]=requestedSlave;	
+										ret[1]=fnCode;	
+										ret[2]=((requestedRegister&0xFF00)>>8);
+										ret[3]=((requestedRegister&0x00FF));
+										ret[4]=((Length&0xFF00)>>8);
+										ret[5]=((Length&0x00FF));
+										byte hi = 0xFF, lo = 0xFF;
+										getCRC(ret, 8, 0, 6, &hi, &lo);
+										ret[6]=hi;
+										ret[7]=lo;
+										doWrite(ret, 8);
+
+										ResCnt=0;
+									}
+								}
+								else bvalid=false;
+							}
+						}
+						break;
+				}
+			}
+			else bvalid = false;
+		}
+		lastrecv = millis();
+	}
+	if(!bvalid && ResCnt>0) ResCnt=0;
+	if(ResCnt>0 && (millis()-lastrecv > 200 || millis() < lastrecv)) ResCnt=0;
+}
+/*
+void ModbusRTUSlave::getCRC(LinkedList<byte>* pby, int startindex, int nSize, byte* byFirstReturn, byte* bySecondReturn)
+{
+	int uIndex;
+	byte uchCRCHi = 0xff;
+	byte uchCRCLo = 0xff;
+	for (int i = startindex; i < startindex + nSize && i<pby->size(); i++)
+	{
+		uIndex = uchCRCHi ^ pby->get(i);
+		uchCRCHi = uchCRCLo ^ auchCRCHi[uIndex];
+		uchCRCLo = auchCRCLo[uIndex];
+	}
+	(*byFirstReturn) = uchCRCHi;
+	(*bySecondReturn) = uchCRCLo;
+}
+*/
+void ModbusRTUSlave::getCRC(byte* pby, int arsize, int startindex, int nSize, byte* byFirstReturn, byte* bySecondReturn)
+{
+	int uIndex;
+	byte uchCRCHi = 0xff;
+	byte uchCRCLo = 0xff;
+	for (int i = startindex; i < startindex + nSize && i<arsize; i++)
+	{
+		uIndex = uchCRCHi ^ pby[i];
+		uchCRCHi = uchCRCLo ^ auchCRCHi[uIndex];
+		uchCRCLo = auchCRCLo[uIndex];
+	}
+	(*byFirstReturn) = uchCRCHi;
+	(*bySecondReturn) = uchCRCLo;
+}
+
+void ModbusRTUSlave::switchToReadingIfNotReadingNow()
+{
+  if (!isReading)
+	{
+	  ser->flush();
+	  digitalWrite(controlPin, LOW);
+	  isReading = true;
+	}
+}
+
+bool ModbusRTUSlave::isDataAvail()
+{
+  switchToReadingIfNotReadingNow();
+  return ser->available();
+}
+
+int ModbusRTUSlave::doRead()
+{
+  switchToReadingIfNotReadingNow();
+  return ser->read();
+}
+
+void ModbusRTUSlave::doWrite(byte* buffer, int const length)
+{
+	if (isReading)
+	{
+		digitalWrite(controlPin, HIGH);
+		isReading = false;
+	}
+	if (waitWithAnswerMicroS) {
+		unsigned long t = micros() - receivedLastRequest;
+		if (t < waitWithAnswerMicroS)
+			delayMicroseconds(waitWithAnswerMicroS - t);
+	}
+	ser->write(buffer, length);
+}
+
+void ModbusRTUSlave::readCoilOrDiscreteInput(bitsList *bits, bool &valid)
+{
+	u16 Length = (lstResponse[4] << 8) | lstResponse[5];
+	byte hi = 0xFF, lo = 0xFF;
+	getCRC(lstResponse,300, 0, 6, &hi, &lo);
+	ModbusRTUSlaveBitAddress *a = getBitAddress(bits, requestedRegister, Length);
+	if (Length > 0 && a != NULL && lstResponse[6] == hi && lstResponse[7] == lo)
+	{
+		u16 stidx = (requestedRegister - a->addr) / 8;
+		u16 nlen = ((Length-1) / 8)+1;
+
+		byte dat[nlen];
+		memset(dat,0,nlen);
+
+		int ng=(requestedRegister - a->addr) % 8;
+		int ns=stidx;
+		for(int i=0;i<nlen;i++)
+		{
+			byte val=0;
+			for(int j=0;j<8;j++)
+			{
+				if(bitRead(a->values[ns], ng++)) bitSet(val,j);
+				if(ng==8){ns++;ng=0;}
+			}
+			dat[i]=val;
+		}
+		
+		byte ret[3+nlen+2];
+		ret[0]=requestedSlave;
+		ret[1]=fnCode;
+		ret[2]=nlen;
+		for(int i=0;i<nlen;i++) ret[3+i]=dat[i];
+		byte hi = 0xFF, lo = 0xFF;
+		getCRC(ret, 3+nlen+2, 0, 3+nlen, &hi, &lo);
+		ret[3+nlen]=hi;
+		ret[3+nlen+1]=lo;
+		doWrite(ret, 3+nlen+2);
+
+		ResCnt=0;
+	}
+	else valid = false;
+}
+
+void ModbusRTUSlave::readHoldingOrInputRegister(wordsList *words, bool &valid)
+{
+	u16 Length = (lstResponse[4] << 8) | lstResponse[5];
+	byte hi = 0xFF, lo = 0xFF;
+	getCRC(lstResponse,300, 0, 6, &hi, &lo);
+	ModbusRTUSlaveWordAddress *a = getWordAddress(words, requestedRegister, Length);
+	if (Length > 0 && a != NULL && lstResponse[6] == hi && lstResponse[7] == lo)
+	{
+		u16 stidx = requestedRegister - a->addr;
+		u16 nlen = Length * 2;
+
+		byte ret[3+nlen+2];
+		ret[0]=requestedSlave;
+		ret[1]=fnCode;
+		ret[2]=nlen;
+		for(int i=stidx;i<stidx+Length;i++)
+		{
+			ret[3+((i-stidx)*2)+0]=((a->values[i] & 0xFF00) >> 8);
+			ret[3+((i-stidx)*2)+1]=((a->values[i] & 0xFF));
+		}
+		byte hi = 0xFF, lo = 0xFF;
+		getCRC(ret, 3+nlen+2, 0, 3+nlen, &hi, &lo);
+		ret[3+nlen]=hi;
+		ret[3+nlen+1]=lo;
+		doWrite(ret, 3+nlen+2);
+
+		ResCnt=0;
+	}
+	else valid = false;
+}
+
+
+bool getBit(u8* area, int index)
+{
+	u16 stidx = index / 8;
+	return bitRead(area[stidx], index%8);
+}
+
+void setBit(u8* area, int index, bool value)
+{
+	u16 stidx = index / 8;
+	bitWrite(area[stidx], index%8, value);
+}
+
+ModbusRTUSlaveBitAddress::ModbusRTUSlaveBitAddress(u16 address, u8* value, int cnt)
+{
+	addr = address;
+	values = value;
+	len = cnt;
+}
+
+ModbusRTUSlaveWordAddress::ModbusRTUSlaveWordAddress(u16 address, u16* value, int cnt)
+{
+	addr = address;
+	values = value;
+	len = cnt;
+}

src/modbus/ModbusRTUSlave.h

@@ -0,0 +1,117 @@
+#ifndef _MODBUS_RTU_SLAVE_H
+#define _MODBUS_RTU_SLAVE_H
+
+#include "Arduino.h"
+#include "utility/LinkedList.h"
+
+class ModbusRTUSlaveWordAddress
+{
+	public : 
+		u16 addr;
+		byte len;
+		u16 *values;
+		ModbusRTUSlaveWordAddress(u16 Address, u16* value, int cnt);
+};
+
+class ModbusRTUSlaveBitAddress
+{
+	public : 
+		u16 addr;
+		byte len;
+		u8 *values;
+		ModbusRTUSlaveBitAddress(u16 Address, u8* value, int cnt);
+};
+
+using wordsList = LinkedList<ModbusRTUSlaveWordAddress*>;
+using bitsList = LinkedList<ModbusRTUSlaveBitAddress*>;
+
+class ModbusRTUSlave
+{
+	public : 
+		ModbusRTUSlave(HardwareSerial*, const uint8_t);
+		void begin(byte address, uint32_t baudrate);
+		void end();
+		bool addCoilArea(u16 Address, u8* values, int cnt);
+		bool addDiscreteInputArea(u16 Address, u8* values, int cnt);
+		bool addHoldingRegisterArea(u16 Address, u16* values, int cnt);
+		bool addInputRegisterArea(u16 Address, u16* values, int cnt);
+		void process();
+		unsigned long waitWithAnswerMicroS = 0;
+
+	private:
+		byte slaveAddress;
+		byte requestedSlave;
+		u16 requestedRegister;
+		bool connected = false;
+		HardwareSerial * const ser;
+		u8 const controlPin;
+		bool isReading;
+		unsigned long receivedLastRequest;
+
+		// LinkedList<ModbusRTUSlaveWordAddress*>  *rWords;
+		// LinkedList<ModbusRTUSlaveBitAddress*>  *rBits;
+		wordsList *rWords;
+		bitsList *rBits;
+		wordsList *rwWords;
+		bitsList *rwBits;
+		ModbusRTUSlaveWordAddress* getWordAddress(wordsList*, u16 Addr);
+		ModbusRTUSlaveBitAddress* getBitAddress(bitsList*, u16 Addr);
+		ModbusRTUSlaveWordAddress* getWordAddress(wordsList*, u16 Addr,u16 Len);
+		ModbusRTUSlaveBitAddress* getBitAddress(bitsList*, u16 Addr,u16 Len);
+		byte lstResponse[300];
+		byte fnCode;
+		int ResCnt=0;
+		unsigned long lastrecv;
+		void getCRC(byte* pby, int arsize, int startindex, int nSize, byte* byFirstReturn, byte* bySecondReturn);
+
+		void switchToReadingIfNotReadingNow();
+		bool isDataAvail();
+		int doRead();
+		void doWrite(byte*, int);
+		void readCoilOrDiscreteInput(bitsList*, bool&);
+		void readHoldingOrInputRegister(wordsList*, bool&);
+};
+
+const byte auchCRCHi[] = {
+						0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,
+						0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,
+						0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01,
+						0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
+						0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81,
+						0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,
+						0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01,
+						0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
+						0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,
+						0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,
+						0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01,
+						0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
+						0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,
+						0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,
+						0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01,
+						0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
+						0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,
+						0x40};
+
+const byte auchCRCLo[] = {
+						0x00, 0xC0, 0xC1, 0x01, 0xC3, 0x03, 0x02, 0xC2, 0xC6, 0x06, 0x07, 0xC7, 0x05, 0xC5, 0xC4,
+						0x04, 0xCC, 0x0C, 0x0D, 0xCD, 0x0F, 0xCF, 0xCE, 0x0E, 0x0A, 0xCA, 0xCB, 0x0B, 0xC9, 0x09,
+						0x08, 0xC8, 0xD8, 0x18, 0x19, 0xD9, 0x1B, 0xDB, 0xDA, 0x1A, 0x1E, 0xDE, 0xDF, 0x1F, 0xDD,
+						0x1D, 0x1C, 0xDC, 0x14, 0xD4, 0xD5, 0x15, 0xD7, 0x17, 0x16, 0xD6, 0xD2, 0x12, 0x13, 0xD3,
+						0x11, 0xD1, 0xD0, 0x10, 0xF0, 0x30, 0x31, 0xF1, 0x33, 0xF3, 0xF2, 0x32, 0x36, 0xF6, 0xF7,
+						0x37, 0xF5, 0x35, 0x34, 0xF4, 0x3C, 0xFC, 0xFD, 0x3D, 0xFF, 0x3F, 0x3E, 0xFE, 0xFA, 0x3A,
+						0x3B, 0xFB, 0x39, 0xF9, 0xF8, 0x38, 0x28, 0xE8, 0xE9, 0x29, 0xEB, 0x2B, 0x2A, 0xEA, 0xEE,
+						0x2E, 0x2F, 0xEF, 0x2D, 0xED, 0xEC, 0x2C, 0xE4, 0x24, 0x25, 0xE5, 0x27, 0xE7, 0xE6, 0x26,
+						0x22, 0xE2, 0xE3, 0x23, 0xE1, 0x21, 0x20, 0xE0, 0xA0, 0x60, 0x61, 0xA1, 0x63, 0xA3, 0xA2,
+						0x62, 0x66, 0xA6, 0xA7, 0x67, 0xA5, 0x65, 0x64, 0xA4, 0x6C, 0xAC, 0xAD, 0x6D, 0xAF, 0x6F,
+						0x6E, 0xAE, 0xAA, 0x6A, 0x6B, 0xAB, 0x69, 0xA9, 0xA8, 0x68, 0x78, 0xB8, 0xB9, 0x79, 0xBB,
+						0x7B, 0x7A, 0xBA, 0xBE, 0x7E, 0x7F, 0xBF, 0x7D, 0xBD, 0xBC, 0x7C, 0xB4, 0x74, 0x75, 0xB5,
+						0x77, 0xB7, 0xB6, 0x76, 0x72, 0xB2, 0xB3, 0x73, 0xB1, 0x71, 0x70, 0xB0, 0x50, 0x90, 0x91,
+						0x51, 0x93, 0x53, 0x52, 0x92, 0x96, 0x56, 0x57, 0x97, 0x55, 0x95, 0x94, 0x54, 0x9C, 0x5C,
+						0x5D, 0x9D, 0x5F, 0x9F, 0x9E, 0x5E, 0x5A, 0x9A, 0x9B, 0x5B, 0x99, 0x59, 0x58, 0x98, 0x88,
+						0x48, 0x49, 0x89, 0x4B, 0x8B, 0x8A, 0x4A, 0x4E, 0x8E, 0x8F, 0x4F, 0x8D, 0x4D, 0x4C, 0x8C,
+						0x44, 0x84, 0x85, 0x45, 0x87, 0x47, 0x46, 0x86, 0x82, 0x42, 0x43, 0x83, 0x41, 0x81, 0x80,
+						0x40};
+
+bool getBit(u8* area, int index);
+void setBit(u8* area, int index, bool value);
+#endif

src/modbus/README.md

@@ -0,0 +1,7 @@
+# ModbusRTU_Slave
+This is a modified version of ModbusRTU_Slave_RS485 version 1.0.2 by Łukasz Ślusarczyk <lukasz.slusarczyk@gmail.com>
+
+https://github.com/lucasso/ModbusRTUSlaveArduino
+
+## License
+See ./LICENSE file (GNU GPL v3.0 or later)

src/modbus/utility/HashMap.h

@@ -0,0 +1,112 @@
+/*
+||
+|| @file HashMap.h
+|| @version 1.0 Beta
+|| @author Alexander Brevig
+|| @contact alexanderbrevig@gmail.com
+||
+|| @description
+|| | This library provides a simple interface for storing data with an associate key
+|| #
+||
+|| @license
+|| | This library is free software; you can redistribute it and/or
+|| | modify it under the terms of the GNU Lesser General Public
+|| | License as published by the Free Software Foundation; version
+|| | 2.1 of the License.
+|| |
+|| | This library 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
+|| | Lesser General Public License for more details.
+|| |
+|| | You should have received a copy of the GNU Lesser General Public
+|| | License along with this library; if not, write to the Free Software
+|| | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+|| #
+||
+*/
+
+#ifndef HASHMAP_H
+#define HASHMAP_H
+
+#include "Arduino.h"
+
+/* Handle association */
+template<typename hash,typename map>
+class HashType {
+public:
+	HashType(){ reset(); }
+	
+	HashType(hash code,map value):hashCode(code),mappedValue(value){}
+	
+	void reset(){ hashCode = 0; mappedValue = 0; }
+	hash getHash(){ return hashCode; }
+	void setHash(hash code){ hashCode = code; }
+	map getValue(){ return mappedValue; }
+	void setValue(map value){ mappedValue = value; }
+	
+	HashType& operator()(hash code, map value){
+		setHash( code );
+		setValue( value );
+	}
+private:
+	hash hashCode;
+	map mappedValue;
+};
+
+/*
+Handle indexing and searches
+TODO - extend API
+*/
+template<typename hash, typename map>
+class HashMap {
+public:
+	HashMap(HashType<hash,map>* newMap,byte newSize){
+		hashMap = newMap;
+		size = newSize;
+		for (byte i=0; i<size; i++){
+			hashMap[i].reset();
+		}
+	}
+	
+	HashType<hash,map>& operator[](int x){
+		//TODO - bounds
+		return hashMap[x];
+	}
+	
+	byte getIndexOf( hash key ){
+		for (byte i=0; i<size; i++){
+			if (hashMap[i].getHash()==key){
+				return i;
+			}
+		}
+	}
+	map getValueOf( hash key ){
+		for (byte i=0; i<size; i++){
+			if (hashMap[i].getHash()==key){
+				return hashMap[i].getValue();
+			}
+		}
+	}
+	
+	void debug(){
+		for (byte i=0; i<size; i++){
+			Serial.print(hashMap[i].getHash());
+			Serial.print(" - ");
+			Serial.println(hashMap[i].getValue());
+		}
+	}
+
+private:
+	HashType<hash,map>* hashMap;
+	byte size;
+};
+
+#endif
+
+/*
+|| @changelog
+|| | 1.0 2009-07-13 - Alexander Brevig : Initial Release
+|| #
+*/

src/modbus/utility/HashMap.h.bak

@@ -0,0 +1,113 @@
+/*
+||
+|| @file HashMap.h
+|| @version 1.0 Beta
+|| @author Alexander Brevig
+|| @contact alexanderbrevig@gmail.com
+||
+|| @description
+|| | This library provides a simple interface for storing data with an associate key
+|| #
+||
+|| @license
+|| | This library is free software; you can redistribute it and/or
+|| | modify it under the terms of the GNU Lesser General Public
+|| | License as published by the Free Software Foundation; version
+|| | 2.1 of the License.
+|| |
+|| | This library 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
+|| | Lesser General Public License for more details.
+|| |
+|| | You should have received a copy of the GNU Lesser General Public
+|| | License along with this library; if not, write to the Free Software
+|| | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+|| #
+||
+*/
+
+#ifndef HASHMAP_H
+#define HASHMAP_H
+
+#include "Arduino.h"
+
+/* Handle association */
+template<typename hash,typename map>
+class HashType {
+public:
+	HashType(){ reset(); }
+	
+	HashType(hash code,map value):hashCode(code),mappedValue(value){}
+	
+	void reset(){ hashCode = 0; mappedValue = 0; }
+	hash getHash(){ return hashCode; }
+	void setHash(hash code){ hashCode = code; }
+	map getValue(){ return mappedValue; }
+	void setValue(map value){ mappedValue = value; }
+	
+	HashType& operator()(hash code, map value){
+		setHash( code );
+		setValue( value );
+	}
+private:
+	hash hashCode;
+	map mappedValue;
+};
+
+/*
+Handle indexing and searches
+TODO - extend API
+*/
+template<typename hash, typename map>
+
+class HashMap {
+public:
+	HashMap(HashType<hash,map>* newMap,byte newSize){
+		hashMap = newMap;
+		size = newSize;
+		for (byte i=0; i<size; i++){
+			hashMap[i].reset();
+		}
+	}
+	
+	HashType<hash,map>& operator[](int x){
+		//TODO - bounds
+		return hashMap[x];
+	}
+	
+	byte getIndexOf( hash key ){
+		for (byte i=0; i<size; i++){
+			if (hashMap[i].getHash()==key){
+				return i;
+			}
+		}
+	}
+	map getValueOf( hash key ){
+		for (byte i=0; i<size; i++){
+			if (hashMap[i].getHash()==key){
+				return hashMap[i].getValue();
+			}
+		}
+	}
+	
+	void debug(){
+		for (byte i=0; i<size; i++){
+			Serial.print(hashMap[i].getHash());
+			Serial.print(" - ");
+			Serial.println(hashMap[i].getValue());
+		}
+	}
+
+private:
+	HashType<hash,map>* hashMap;
+	byte size;
+};
+
+#endif
+
+/*
+|| @changelog
+|| | 1.0 2009-07-13 - Alexander Brevig : Initial Release
+|| #
+*/

src/modbus/utility/LinkedList.h

@@ -0,0 +1,417 @@
+/*
+	LinkedList.h - V1.1 - Generic LinkedList implementation
+	Works better with FIFO, because LIFO will need to
+	search the entire List to find the last one;
+	For instructions, go to https://github.com/ivanseidel/LinkedList
+	Created by Ivan Seidel Gomes, March, 2013.
+	Released into the public domain.
+*/
+
+
+#ifndef LinkedList_h
+#define LinkedList_h
+
+#include <stddef.h>
+
+template<class T>
+struct ListNode
+{
+	T data;
+	ListNode<T> *next;
+};
+
+template <typename T>
+class LinkedList{
+
+protected:
+	int _size;
+	ListNode<T> *root;
+	ListNode<T>	*last;
+
+	// Helps "get" method, by saving last position
+	ListNode<T> *lastNodeGot;
+	int lastIndexGot;
+	// isCached should be set to FALSE
+	// everytime the list suffer changes
+	bool isCached;
+
+	ListNode<T>* getNode(int index);
+
+	ListNode<T>* findEndOfSortedString(ListNode<T> *p, int (*cmp)(T &, T &));
+
+public:
+	LinkedList();
+	LinkedList(int sizeIndex, T _t); //initiate list size and default value
+	~LinkedList();
+
+	/*
+		Returns current size of LinkedList
+	*/
+	virtual int size();
+	/*
+		Adds a T object in the specified index;
+		Unlink and link the LinkedList correcly;
+		Increment _size
+	*/
+	virtual bool add(int index, T);
+	/*
+		Adds a T object in the end of the LinkedList;
+		Increment _size;
+	*/
+	virtual bool add(T);
+	/*
+		Adds a T object in the start of the LinkedList;
+		Increment _size;
+	*/
+	virtual bool unshift(T);
+	/*
+		Set the object at index, with T;
+	*/
+	virtual bool set(int index, T);
+	/*
+		Remove object at index;
+		If index is not reachable, returns false;
+		else, decrement _size
+	*/
+	virtual T remove(int index);
+	/*
+		Remove last object;
+	*/
+	virtual T pop();
+	/*
+		Remove first object;
+	*/
+	virtual T shift();
+	/*
+		Get the index'th element on the list;
+		Return Element if accessible,
+		else, return false;
+	*/
+	virtual T get(int index);
+
+	/*
+		Clear the entire array
+	*/
+	virtual void clear();
+
+	/*
+		Sort the list, given a comparison function
+	*/
+	virtual void sort(int (*cmp)(T &, T &));
+
+		// add support to array brakets [] operator
+	inline T& operator[](int index); 
+	inline T& operator[](size_t& i) { return this->get(i); }
+  	inline const T& operator[](const size_t& i) const { return this->get(i); }
+
+};
+
+// Initialize LinkedList with false values
+template<typename T>
+LinkedList<T>::LinkedList()
+{
+	root=NULL;
+	last=NULL;
+	_size=0;
+
+	lastNodeGot = root;
+	lastIndexGot = 0;
+	isCached = false;
+}
+
+// Clear Nodes and free Memory
+template<typename T>
+LinkedList<T>::~LinkedList()
+{
+	ListNode<T>* tmp;
+	while(root!=NULL)
+	{
+		tmp=root;
+		root=root->next;
+		delete tmp;
+	}
+	last = NULL;
+	_size=0;
+	isCached = false;
+}
+
+/*
+	Actualy "logic" coding
+*/
+
+template<typename T>
+ListNode<T>* LinkedList<T>::getNode(int index){
+
+	int _pos = 0;
+	ListNode<T>* current = root;
+
+	// Check if the node trying to get is
+	// immediatly AFTER the previous got one
+	if(isCached && lastIndexGot <= index){
+		_pos = lastIndexGot;
+		current = lastNodeGot;
+	}
+
+	while(_pos < index && current){
+		current = current->next;
+
+		_pos++;
+	}
+
+	// Check if the object index got is the same as the required
+	if(_pos == index){
+		isCached = true;
+		lastIndexGot = index;
+		lastNodeGot = current;
+
+		return current;
+	}
+
+	return NULL;
+}
+
+template<typename T>
+int LinkedList<T>::size(){
+	return _size;
+}
+
+template<typename T>
+LinkedList<T>::LinkedList(int sizeIndex, T _t){
+	for (int i = 0; i < sizeIndex; i++){
+		add(_t);
+	}
+}
+
+template<typename T>
+bool LinkedList<T>::add(int index, T _t){
+
+	if(index >= _size)
+		return add(_t);
+
+	if(index == 0)
+		return unshift(_t);
+
+	ListNode<T> *tmp = new ListNode<T>(),
+				 *_prev = getNode(index-1);
+	tmp->data = _t;
+	tmp->next = _prev->next;
+	_prev->next = tmp;
+
+	_size++;
+	isCached = false;
+
+	return true;
+}
+
+template<typename T>
+bool LinkedList<T>::add(T _t){
+
+	ListNode<T> *tmp = new ListNode<T>();
+	tmp->data = _t;
+	tmp->next = NULL;
+	
+	if(root){
+		// Already have elements inserted
+		last->next = tmp;
+		last = tmp;
+	}else{
+		// First element being inserted
+		root = tmp;
+		last = tmp;
+	}
+
+	_size++;
+	isCached = false;
+
+	return true;
+}
+
+template<typename T>
+bool LinkedList<T>::unshift(T _t){
+
+	if(_size == 0)
+		return add(_t);
+
+	ListNode<T> *tmp = new ListNode<T>();
+	tmp->next = root;
+	tmp->data = _t;
+	root = tmp;
+	
+	_size++;
+	isCached = false;
+	
+	return true;
+}
+
+
+template<typename T>
+T& LinkedList<T>::operator[](int index) {
+	return getNode(index)->data;
+}
+
+template<typename T>
+bool LinkedList<T>::set(int index, T _t){
+	// Check if index position is in bounds
+	if(index < 0 || index >= _size)
+		return false;
+
+	getNode(index)->data = _t;
+	return true;
+}
+
+template<typename T>
+T LinkedList<T>::pop(){
+	if(_size <= 0)
+		return T();
+	
+	isCached = false;
+
+	if(_size >= 2){
+		ListNode<T> *tmp = getNode(_size - 2);
+		T ret = tmp->next->data;
+		delete(tmp->next);
+		tmp->next = NULL;
+		last = tmp;
+		_size--;
+		return ret;
+	}else{
+		// Only one element left on the list
+		T ret = root->data;
+		delete(root);
+		root = NULL;
+		last = NULL;
+		_size = 0;
+		return ret;
+	}
+}
+
+template<typename T>
+T LinkedList<T>::shift(){
+	if(_size <= 0)
+		return T();
+
+	if(_size > 1){
+		ListNode<T> *_next = root->next;
+		T ret = root->data;
+		delete(root);
+		root = _next;
+		_size --;
+		isCached = false;
+
+		return ret;
+	}else{
+		// Only one left, then pop()
+		return pop();
+	}
+
+}
+
+template<typename T>
+T LinkedList<T>::remove(int index){
+	if (index < 0 || index >= _size)
+	{
+		return T();
+	}
+
+	if(index == 0)
+		return shift();
+	
+	if (index == _size-1)
+	{
+		return pop();
+	}
+
+	ListNode<T> *tmp = getNode(index - 1);
+	ListNode<T> *toDelete = tmp->next;
+	T ret = toDelete->data;
+	tmp->next = tmp->next->next;
+	delete(toDelete);
+	_size--;
+	isCached = false;
+	return ret;
+}
+
+
+template<typename T>
+T LinkedList<T>::get(int index){
+	ListNode<T> *tmp = getNode(index);
+
+	return (tmp ? tmp->data : T());
+}
+
+template<typename T>
+void LinkedList<T>::clear(){
+	while(size() > 0)
+		shift();
+}
+
+template<typename T>
+void LinkedList<T>::sort(int (*cmp)(T &, T &)){
+	if(_size < 2) return; // trivial case;
+
+	for(;;) {	
+
+		ListNode<T> **joinPoint = &root;
+
+		while(*joinPoint) {
+			ListNode<T> *a = *joinPoint;
+			ListNode<T> *a_end = findEndOfSortedString(a, cmp);
+	
+			if(!a_end->next	) {
+				if(joinPoint == &root) {
+					last = a_end;
+					isCached = false;
+					return;
+				}
+				else {
+					break;
+				}
+			}
+
+			ListNode<T> *b = a_end->next;
+			ListNode<T> *b_end = findEndOfSortedString(b, cmp);
+
+			ListNode<T> *tail = b_end->next;
+
+			a_end->next = NULL;
+			b_end->next = NULL;
+
+			while(a && b) {
+				if(cmp(a->data, b->data) <= 0) {
+					*joinPoint = a;
+					joinPoint = &a->next;
+					a = a->next;	
+				}
+				else {
+					*joinPoint = b;
+					joinPoint = &b->next;
+					b = b->next;	
+				}
+			}
+
+			if(a) {
+				*joinPoint = a;
+				while(a->next) a = a->next;
+				a->next = tail;
+				joinPoint = &a->next;
+			}
+			else {
+				*joinPoint = b;
+				while(b->next) b = b->next;
+				b->next = tail;
+				joinPoint = &b->next;
+			}
+		}
+	}
+}
+
+template<typename T>
+ListNode<T>* LinkedList<T>::findEndOfSortedString(ListNode<T> *p, int (*cmp)(T &, T &)) {
+	while(p->next && cmp(p->data, p->next->data) <= 0) {
+		p = p->next;
+	}
+	
+	return p;
+}
+
+#endif

tank_controller.ino

@@ -0,0 +1,510 @@
+#include <EEPROM.h>
+#include "src/OneWire/OneWire.h"
+#include "src/DallasTemperature/DallasTemperature.h"
+#include "src/display/display.h"
+#include "src/controller/controller.h"
+
+const uint8_t BTN_PWR = 7;
+
+modbusParameters modbusParams;
+parameters params;   // Prozessparameter
+values vals;         // aktuelle Messwerte
+PSensor pSensor;     // verwendeter Drucksensor
+valveStates vStates; // Zustände der Ausgänge
+bool paramsChangedByUI; // true, außer ein Wert wurde über Modbus geändert
+bool timeStampOverflow = false; // true, wenn mehr als 0xFFF Zehntelsekunden vergangen sind
+unsigned long timeStamp;
+u16 lastRefTime = 0xFFFF;
+
+#if _MODBUS == 1
+#include "src/modbus/ModbusRTUSlave.h"
+
+u8 modbusStates[1]; // Bit0: tEn, Bit1: pInc, Bit2: pDec, Bit3: cEn
+u8 modbusValves[1]; // Bit0: Temp1, Bit1: Temp2, Bit2: Druck
+// 0: Event-Counter, 1: high: modbusValves[0], low: modbusStates[0], 2...4: Temp 1, 2, Druck, ab5: gespeicherte Schaltvorgänge
+u16 modbusData[_REGS_INFRONTOF_EVENTS + _MODBUS_MAX_EVENTS];
+u16 modbusMiscReadable[2]; // Version, Kühlzonen
+u16 modbusSetpoints[6]; // Temp1, 2, Druck jeweils Sollwert + Hysterese
+u16 modbusRefTime[1]; // setzt bei Änderung Event-Counter und -Timer zurück
+
+u8 &states = modbusStates[0];
+u8 &valves = modbusValves[0];
+u16 &eventCounter = modbusData[0];
+u16 &refTime = modbusRefTime[0];
+
+ModbusRTUSlave mb(&Serial1, 2);
+
+void checkParamINT16(int *source, int *target, const int &std, const int &min, const int &max) {
+  _print("source: "); _print(*source);
+  if (*source == _SENSOR_FAULT) {
+    *source = *target = std;
+  } else if (*source > max) {
+    *source = *target = max;
+  } else if (*source < min) {
+    *source = *target = min;
+  } else if (*source == min || *source == max) {
+    *target = *source;
+  } else {
+    u8 mod = *source % 5;
+    _print(", modulo: "); _print(mod);
+    if (mod == 0)
+      *target = *source;
+    else {
+      int tempVal = *source - mod;
+      _print(", tempVal: "); _print(tempVal);
+      if (mod > 2) { // runde auf den nächsten 5er Schritt bzw. setze auf max
+        if ((tempVal + 5) > max) {
+          *source = *target = max;
+          _print(" ... auf max setzen");
+        } else {
+          *source = *target = tempVal + 5;
+          _print(" ... aufrunden");
+        }
+      } else { // runde auf den vorigen 5er Schritt bzw. setze auf min
+        if (tempVal < min) {
+          *source = *target = min;
+          _print(" ... auf min setzen");
+        } else {
+          *source = *target = tempVal;
+          _print(" ... abrunden");
+        }
+      }
+    }
+  }
+  _print(", target: "); _print(*target); _print(", source: "); _println(*source);
+}
+
+void checkParamUINT8(u8 *source, u8 *target, const u8 &std) {
+  _print("checkParamUINT8 source vorher: "); _print(*source);
+  if (*source > 1) {
+    *source = *target = std;
+  } else {
+    *target = *source;
+  }
+  _print(", target: "); _print(*target); _print(", source: "); _println(*source);
+}
+
+void checkParamBool(u8 &p, const u8 &bitNr, u8 *p2=nullptr) {
+  u8 *p_ = (p2) ? p2 : &p;
+  if (paramsChangedByUI) {
+    _print("UI -> Modbus - vorher: "); _print(bitRead(modbusStates[0], bitNr));
+    bitWrite(modbusStates[0], bitNr, *p_);
+    _print(", nachher: "); _println(bitRead(modbusStates[0], bitNr));
+  } else {
+    _print("Modbus -> UI - vorher: "); _print(*p_);
+    p = bitRead(modbusStates[0], bitNr);
+    _print(", nachher: "); _println(p);
+  }
+  bitWrite(modbusData[1], bitNr, bitRead(modbusStates[0], bitNr));
+}
+
+void checkModbusParams() {
+  parameters p;
+  if (modbusSetpoints[0] != params.ts1) {
+    if (paramsChangedByUI) {
+      _print("ts1 - UI -> Modbus - ");
+      checkParamINT16(&params.ts1, &modbusSetpoints[0], _STD_TEMP_SETPOINT, _MIN_TEMP_SETPOINT, _MAX_TEMP_SETPOINT);
+    } else {
+      _print("ts1 - Modbus -> UI - ");
+      checkParamINT16(&modbusSetpoints[0], &params.ts1, _STD_TEMP_SETPOINT, _MIN_TEMP_SETPOINT, _MAX_TEMP_SETPOINT);
+      p.ts1 = params.ts1;
+    }
+  }
+  if (modbusSetpoints[1] != params.th1) {
+    if (paramsChangedByUI) {
+      _print("th1 - UI -> Modbus - ");
+      checkParamINT16(&params.th1, &modbusSetpoints[1], _STD_TEMP_HYSTERESIS, _MIN_TEMP_HYSTERESIS, _MAX_TEMP_HYSTERESIS);
+    } else {
+      _print("th1 - Modbus -> UI - ");
+      checkParamINT16(&modbusSetpoints[1], &params.th1, _STD_TEMP_HYSTERESIS, _MIN_TEMP_HYSTERESIS, _MAX_TEMP_HYSTERESIS);
+      p.th1 = params.th1;
+    }
+  }
+  if (modbusSetpoints[4] != params.ps) {
+    if (paramsChangedByUI) {
+      _print("ps  - UI -> Modbus - ");
+      checkParamINT16(&params.ps, &modbusSetpoints[4], _STD_P_SETPOINT, _MIN_P_SETPOINT, _MAX_P_SETPOINT);
+    } else {
+      _print("ps  - Modbus -> UI - ");
+      checkParamINT16(&modbusSetpoints[4], &params.ps, _STD_P_SETPOINT, _MIN_P_SETPOINT, _MAX_P_SETPOINT);
+      p.ps = params.ps;
+    }
+  }
+  if (modbusSetpoints[5] != params.ph) {
+    if (paramsChangedByUI) {
+      _print("ph  - UI -> Modbus - ");
+      checkParamINT16(&params.ph, &modbusSetpoints[5], _STD_P_HYSTERESIS, _MIN_P_HYSTERESIS, _MAX_P_HYSTERESIS);
+    } else {
+      _print("ph  - Modbus -> UI - ");
+      checkParamINT16(&modbusSetpoints[5], &params.ph, _STD_P_HYSTERESIS, _MIN_P_HYSTERESIS, _MAX_P_HYSTERESIS);
+      p.ph = params.ph;
+    }
+  }
+  u8 bitNr = 0;
+  if (bitRead(modbusStates[0], bitNr) != params.tEn) {
+    _print("tEn  - ");
+    checkParamBool(p.tEn, bitNr, &params.tEn);
+  }
+  bitNr++;
+  if (bitRead(modbusStates[0], bitNr) != params.pInc) {
+    _print("pInc - ");
+    checkParamBool(p.pInc, bitNr, &params.pInc);
+  }
+  bitNr++;
+  if (bitRead(modbusStates[0], bitNr) != params.pDec) {
+    _print("pDec - ");
+    checkParamBool(p.pDec, bitNr, &params.pDec);
+  }
+  bitNr++;
+  if (bitRead(modbusStates[0], bitNr) != params.cEn) {
+    _print("cEn  - ");
+    checkParamBool(p.cEn, bitNr, &params.cEn);
+  }
+  if (!paramsChangedByUI) {
+    setParams(p);
+  }
+  paramsChangedByUI = false;
+}
+#endif // _MODBUS ==
+
+// EEPROM Adressen:
+
+#define _EEPROM_OFFSET           0 // Falls sich die Register nicht mehr beschreiben lassen
+#define _EEPROM_MODBUS_ADDRESS   0 + _EEPROM_OFFSET // 1 byte
+#define _EEPROM_MODBUS_BAUDRATE  1 + _EEPROM_OFFSET // 4 bytes
+#define _EEPROM_MODBUS_DELAY     5 + _EEPROM_OFFSET // 1 byte
+#define _EEPROM_TEMP_SETPOINT    6 + _EEPROM_OFFSET // 4 bytes
+#define _EEPROM_TEMP_HYSTERESIS 10 + _EEPROM_OFFSET // 4 bytes
+#define _EEPROM_P_SETPOINT      14 + _EEPROM_OFFSET // 4 bytes
+#define _EEPROM_P_HYSTERESIS    18 + _EEPROM_OFFSET // 4 bytes
+#define _EEPROM_P_EN_INC        22 + _EEPROM_OFFSET // 1 byte
+#define _EEPROM_P_EN_DEC        23 + _EEPROM_OFFSET // 1 byte
+#define _EEPROM_P_SENSOR        24 + _EEPROM_OFFSET // 1 byte
+#define _EEPROM_BG_LIGHT        25 + _EEPROM_OFFSET // 1 byte
+#define _EEPROM_T_EN            26 + _EEPROM_OFFSET // 1 byte
+#define _EEPROM_CONTROL_EN      27 + _EEPROM_OFFSET // 1 byte
+
+// cs, btnNext, btnPrev, btnSelect, btnCancel, bgLed, Parameter, Messwerte, Modbus, Drucksensor
+Display d(10, 3, 4, 5, 6, 9, &params, &vals, &modbusParams, &pSensor, &vStates);
+// Analogeingang Druck, OneWire-Pin, Parameter, Messwerte, Display, Drucksensor, Ausgangszustände
+// nach vStates: t1Pin, t2Pin, pRisePin, pFallPin
+Controller c(A0, 8, &params, &vals, &d, &pSensor, &vStates, 55, 56, 57, 58);
+
+#if _MODBUS == 1
+void beginModbus() {
+  mb.begin(modbusParams.address, modbusParams.baudrate);
+  mb.waitWithAnswerMicroS = modbusParams.delay * 100; // 1/10 ms -> us
+}
+#endif
+
+void getParams() {
+  parameters p;
+  EEPROM.get(_EEPROM_TEMP_SETPOINT, p.ts1);
+  EEPROM.get(_EEPROM_TEMP_HYSTERESIS, p.th1);
+  EEPROM.get(_EEPROM_P_SETPOINT, p.ps);
+  EEPROM.get(_EEPROM_P_HYSTERESIS, p.ph);
+  EEPROM.get(_EEPROM_P_EN_INC, p.pInc);
+  EEPROM.get(_EEPROM_P_EN_DEC, p.pDec);
+  EEPROM.get(_EEPROM_T_EN, p.tEn);
+  EEPROM.get(_EEPROM_CONTROL_EN, p.cEn);
+  _println("getParams() vor Validierung:");
+  _print("    Temperatur Sollwert:   "); _println(p.ts1);
+  _print("    Temperatur Hysterese:  "); _println(p.th1);
+  _print("    Druck Sollwert:        "); _println(p.ps);
+  _print("    Druck Hysterese:       "); _println(p.ph);
+  _print("    Temp-Regelung aktiv:   "); _println(p.tEn);
+  _print("    Drucksteigerung aktiv: "); _println(p.pInc);
+  _print("    Druckabfall aktiv:     "); _println(p.pDec);
+  _print("    Regler aktiv:          "); _println(p.cEn);
+  _print("ts1 - UI -> Modbus - ");
+  checkParamINT16(&p.ts1, &params.ts1, _STD_TEMP_SETPOINT, _MIN_TEMP_SETPOINT, _MAX_TEMP_SETPOINT);
+  _print("th1 - UI -> Modbus - ");
+  checkParamINT16(&p.th1, &params.th1, _STD_TEMP_HYSTERESIS, _MIN_TEMP_HYSTERESIS, _MAX_TEMP_HYSTERESIS);
+  _print("ps  - UI -> Modbus - ");
+  checkParamINT16(&p.ps, &params.ps, _STD_P_SETPOINT, _MIN_P_SETPOINT, _MAX_P_SETPOINT);
+  _print("ph  - UI -> Modbus - ");
+  checkParamINT16(&p.ph, &params.ph, _STD_P_HYSTERESIS, _MIN_P_HYSTERESIS, _MAX_P_HYSTERESIS);
+  _print("tEn  - ");
+  checkParamUINT8(&p.tEn, &params.tEn, _STD_T_EN);
+  _print("pInc - ");
+  checkParamUINT8(&p.pInc, &params.pInc, _STD_P_EN_INC);
+  _print("pDec - ");
+  checkParamUINT8(&p.pDec, &params.pDec, _STD_P_EN_DEC);
+  _print("cEn  - ");
+  checkParamUINT8(&p.cEn, &params.cEn, _STD_C_EN);
+  _println("getParams() nach Validierung:");
+  _print("    Temperatur Sollwert:   "); _println(params.ts1);
+  _print("    Temperatur Hysterese:  "); _println(params.th1);
+  _print("    Druck Sollwert:        "); _println(params.ps);
+  _print("    Druck Hysterese:       "); _println(params.ph);
+  _print("    Temp-Regelung aktiv:   "); _println(params.tEn);
+  _print("    Drucksteigerung aktiv: "); _println(params.pInc);
+  _print("    Druckabfall aktiv:     "); _println(params.pDec);
+  _print("    Regler aktiv:          "); _println(params.cEn);
+}
+
+void setParams(parameters &p) {
+  if (p.ts1 != _SENSOR_FAULT) {
+    _print("ts1 alt: "); _print(params.ts1); _print(", neu: "); _println(p.ts1);
+    checkParamINT16(&p.ts1, &params.ts1, _STD_TEMP_SETPOINT, _MIN_TEMP_SETPOINT, _MAX_TEMP_SETPOINT);
+    EEPROM.put(_EEPROM_TEMP_SETPOINT, params.ts1);
+}
+  if (p.th1 != _SENSOR_FAULT) {
+    _print("th1 alt: "); _print(params.th1); _print(", neu: "); _println(p.th1);
+    checkParamINT16(&p.th1, &params.th1, _STD_TEMP_HYSTERESIS, _MIN_TEMP_HYSTERESIS, _MAX_TEMP_HYSTERESIS);
+    EEPROM.put(_EEPROM_TEMP_HYSTERESIS, params.th1);
+  }
+  if (p.ps != _SENSOR_FAULT) {
+    _print("ps alt: "); _print(params.ps); _print(", neu: "); _println(p.ps);
+    checkParamINT16(&p.ps, &params.ps, _STD_P_SETPOINT, _MIN_P_SETPOINT, _MAX_P_SETPOINT);
+    EEPROM.put(_EEPROM_P_SETPOINT, params.ps);
+  }
+  if (p.ph != _SENSOR_FAULT) {
+    _print("ph alt: "); _print(params.ph); _print(", neu: "); _println(p.ph);
+    checkParamINT16(&p.ph, &params.ph, _STD_P_HYSTERESIS, _MIN_P_HYSTERESIS, _MAX_P_HYSTERESIS);
+    EEPROM.put(_EEPROM_P_HYSTERESIS, params.ph);
+  }
+  if (p.pInc < 2) {
+    _print("pInc alt: "); _print(params.pInc); _print(", neu: "); _println(p.pInc);
+    params.pInc = p.pInc;
+    EEPROM.put(_EEPROM_P_EN_INC, params.pInc);
+  }
+  if (p.pDec < 2) {
+    _print("pDec alt: "); _print(params.pDec); _print(", neu: "); _println(p.pDec);
+    params.pDec = p.pDec;
+    EEPROM.put(_EEPROM_P_EN_DEC, params.pDec);
+  }
+  if (p.tEn < 2) {
+    _print("tEn alt: "); _print(params.tEn); _print(", neu: "); _println(p.tEn);
+    params.tEn = p.tEn;
+    EEPROM.put(_EEPROM_T_EN, params.tEn);
+  }
+  if (p.cEn < 2) {
+    _print("cEn alt: "); _print(params.cEn); _print(", neu: "); _println(p.cEn);
+    params.cEn = p.cEn;
+    EEPROM.put(_EEPROM_CONTROL_EN, params.cEn);
+  }
+  paramsChangedByUI = true;
+}
+
+void getModbusParams() {
+  uint8_t addr = EEPROM.read(_EEPROM_MODBUS_ADDRESS);
+  if (addr < _MODBUS_ADDR_MIN || addr > _MODBUS_ADDR_MAX)
+    modbusParams.address = _MODBUS_ADDR_MIN;
+  else
+    modbusParams.address = addr;
+  uint32_t baudrate;
+  EEPROM.get(_EEPROM_MODBUS_BAUDRATE, baudrate);
+  switch (baudrate) {
+    case 115200: break;
+    case 57600: break;
+    case 38400: break;
+    case 19200: break;
+    case 9600: break;
+    case 4800: break;
+    case 2400: break;
+    case 1200: break;
+    case 300: break;
+    default: baudrate = 9600;
+  }
+  modbusParams.baudrate = baudrate;
+  uint8_t delay_ = EEPROM.read(_EEPROM_MODBUS_DELAY);
+  if (delay_ < _MODBUS_DELAY_MIN)
+    modbusParams.delay = _MODBUS_DELAY_MIN;
+  else if (delay_ > _MODBUS_DELAY_MAX)
+    modbusParams.delay = _MODBUS_DELAY_MAX;
+  else
+    modbusParams.delay = delay_;  
+}
+
+void setModbusParams(const modbusParameters &p) {
+  bool changed = false;
+  if (p.address <= _MODBUS_ADDR_MAX) {
+    EEPROM.put(_EEPROM_MODBUS_ADDRESS, p.address);
+    modbusParams.address = p.address;
+    changed = true;
+  }
+  if (p.baudrate != _MODBUS_INVALID_BAUDRATE) {
+    EEPROM.put(_EEPROM_MODBUS_BAUDRATE, p.baudrate);
+    modbusParams.baudrate = p.baudrate;
+    changed = true;
+  }
+  if (p.delay <= _MODBUS_DELAY_MAX) {
+    EEPROM.put(_EEPROM_MODBUS_DELAY, p.delay);
+    modbusParams.delay = p.delay;
+    changed = true;
+  }
+  if (changed) {
+#if _MODBUS == 1
+    beginModbus();
+#endif
+  }
+}
+
+PSensor getPSensor() {
+  uint8_t val;
+  EEPROM.get(_EEPROM_P_SENSOR, val);
+  switch (val) {
+  case SMC_1_5V_0_5BAR:
+    pSensor = SMC_1_5V_0_5BAR;
+    break;
+  case GEMS_0_5V_0_6BAR:
+    pSensor = GEMS_0_5V_0_6BAR;
+    break;
+  default:
+    pSensor = SMC_1_5V_0_5BAR;
+    EEPROM.put(_EEPROM_P_SENSOR, pSensor);
+  }
+  return pSensor;
+}
+
+void setPSensor(const PSensor &sensor) {
+  EEPROM.put(_EEPROM_P_SENSOR, sensor);
+  pSensor = sensor;
+}
+
+void setup() {
+#if _DEBUG == 1
+  Serial.begin(19200);
+  // char test[60];
+  // sprintf(test, "test: %u, %u, %u", 115200, 57600, 38400);
+  // Serial.println(test);
+#endif
+  pinMode(53, OUTPUT); // Mega CS-Pin (um Slave-Betrieb zu vermeiden)
+
+  paramsChangedByUI = true;
+
+  d.init();
+  d.bgLight(true);
+  d.setModbusParams = setModbusParams;
+  d.setPSensor = setPSensor;
+  d.setParams = setParams;
+
+  getModbusParams();
+  _print("ModbusAddress:  ");
+  _println(modbusParams.address);
+  _print("ModbusBaudrate: ");
+  _println(modbusParams.baudrate);
+  getPSensor();
+  getParams();
+
+  pinMode(BTN_PWR, INPUT_PULLUP);
+
+#if _MODBUS == 1
+  bool modbusFail = false;
+  if (!mb.addDiscreteInputArea(0xD0, modbusValves, 1))
+    modbusFail = true;
+  if (!modbusFail && !mb.addHoldingRegisterArea(0xA0, modbusSetpoints, 6))
+    modbusFail = true;
+  if (!modbusFail && !mb.addCoilArea(0xB0, modbusStates, 1))
+    modbusFail = true;
+  if (!modbusFail && !mb.addHoldingRegisterArea(0xC0, modbusRefTime, 1))
+    modbusFail = true;
+  if (!modbusFail && !mb.addInputRegisterArea(0x00, modbusData, _REGS_INFRONTOF_EVENTS + _MODBUS_MAX_EVENTS))
+    modbusFail = true;
+  if (!modbusFail && !mb.addInputRegisterArea(0xF0, modbusMiscReadable, 2))
+    modbusFail = true;
+  if (modbusFail) {
+    d.modbusProblem();
+    while(1);
+  }
+  modbusData[0] = 0; // EventCounter
+  modbusData[1] = 0x8000; // setze das MSB. Das Bit wird durch setzen von modbusRefTime[0] zurückgesetzt
+  modbusData[2] = _SENSOR_FAULT; // Temp1 in 100stel-°C
+  modbusData[3] = _SENSOR_FAULT; // Temp2 in 100stel-°C, noch nicht implementiert
+  modbusData[4] = _SENSOR_FAULT; // Druck in 100stel bar
+  modbusData[5] = 0; // Zehntelsekunden seit Reglerstart / letzter Referenzierung
+  modbusMiscReadable[0] = _VERSION_NUMBER;
+  modbusMiscReadable[1] = 1; // Aktuell ist nur eine Kühlzone implementiert
+  modbusRefTime[0] = 0xFFFF;
+  beginModbus();
+#endif
+
+  d.greeting();
+
+  delay(1000);
+  c.init(true);
+  if (params.cEn)
+    d.bgLight(true);
+  else
+    d.bgLight(100);
+
+  timeStamp = millis();
+}
+
+bool readPwrBtn() {
+  const uint8_t debounceDelay = 20;
+  static unsigned long lastDebounceTime;
+  static bool lastBounceState;
+  static bool steadyState;
+  bool currentState = !digitalRead(BTN_PWR);
+  if (currentState != lastBounceState) {
+    lastDebounceTime = millis();
+    lastBounceState = currentState;
+  }
+  if ((millis() - lastDebounceTime) > debounceDelay)
+    steadyState = currentState;
+  if (steadyState && (millis() - lastDebounceTime) > 3000)
+    d.reset();
+  return steadyState;
+}
+
+void loop() {
+  static bool pwrBtnPressed;
+  bool currentPwrBtnState = readPwrBtn();
+  if (!pwrBtnPressed && currentPwrBtnState) {
+    _println("pwrButton pressed");
+    pwrBtnPressed = true;
+  } else if(pwrBtnPressed && !currentPwrBtnState) {
+    _println("pwrButton released");
+    pwrBtnPressed = false;
+    parameters p;
+    p.cEn = !params.cEn;
+    if (p.cEn)
+      d.bgLight(true);
+    else
+      d.bgLight(100);
+    setParams(p);
+  }
+
+#if _MODBUS == 1
+  mb.process();
+  checkModbusParams();
+  if (refTime != lastRefTime) {
+    lastRefTime = refTime;
+    timeStamp = millis();
+    modbusData[5] = 0;
+    eventCounter = 0;
+    timeStampOverflow = false;
+    // Setze das 'Timer-Überlauf'-Bit zurück (falls es gesetzt war)
+    bitClear(modbusData[1], 14);
+    // Nachden die 'ReferenzZeit' erstmalig gesetzt wurde, wird dieses Bit gelöscht
+    bitClear(modbusData[1], 15);
+    _println("Der 12 Bit Timer wurde zurückgesetzt");
+  }
+  if (!timeStampOverflow && (millis() - timeStamp) / 100 > 0xFFF) {
+#if _DEBUG == 1
+    u16 passed = (millis() - timeStamp) / 100;
+    _print("Der 12 Bit Timer ist übergelaufen. Vergangene Sekunden: ");
+    _print(passed / 10); _print("."); _println(passed % 10);
+#endif //  _DEBUG ==
+    timeStampOverflow = true;
+    bitSet(modbusData[1], 14);
+  }
+  modbusData[5] = (millis() - timeStamp) / 100;
+#endif //  _MODBUS ==
+  c.process();
+  d.process();
+
+#if 0
+  static unsigned long counter = 0;
+  static unsigned long tl = millis();
+  if (millis() - tl > 1000) {
+    tl = millis();
+    _print("Loops: "); _println(counter);
+    counter = 0;
+  } else {
+    counter++;
+  }
+#endif
+}