automatically updated release notes for mega-20181007

Merge pull request #1861 from TD-er/feature/debug_esp32_wrover_kit
Move stack to user memory space and close file handles + Add WROVER dev kit debug support
2026-07-28 12:17:05 +00:00 · 2018-10-07 04:00:09 +02:00 · 2018-10-06 23:19:18 +02:00 · 2018-10-06 22:56:47 +02:00 · 2018-10-06 22:56:37 +02:00 · 2018-10-06 22:55:57 +02:00
56 changed files with 2198 additions and 765 deletions
@@ -18,3 +18,7 @@ lib/readme.txt
 src/Custom.h
 /ESPEasy
 test/output_export.cpp
+.vscode
+.vscode/.browse.c_cpp.db*
+.vscode/c_cpp_properties.json
+.vscode/launch.json
@@ -1,8 +1,8 @@
-|Latest Nightly  | Build Status | Patreon | Ko-Fi |
-|-------|-------|-------|-------|
-| [![GitHub version](https://img.shields.io/github/release/letscontrolit/ESPEasy/all.svg)](https://github.com/letscontrolit/ESPEasy/releases/latest) | [![Build Status](https://travis-ci.org/letscontrolit/ESPEasy.svg?branch=mega)](https://travis-ci.org/letscontrolit/ESPEasy) | [![donate](https://img.shields.io/badge/donate-Patreon-blue.svg)](https://www.patreon.com/GrovkillenTDer) | [![donate](https://img.shields.io/badge/donate-KoFi-blue.svg)](https://ko-fi.com/grovkillentder) |
+|Latest Nightly  | Build Status | Patreon | Ko-Fi | PayPal |
+|-------|-------|-------|-------|-------|
+| [![GitHub version](https://img.shields.io/github/release/letscontrolit/ESPEasy/all.svg)](https://github.com/letscontrolit/ESPEasy/releases/latest) | [![Build Status](https://travis-ci.org/letscontrolit/ESPEasy.svg?branch=mega)](https://travis-ci.org/letscontrolit/ESPEasy) | [![donate](https://img.shields.io/badge/donate-Patreon-blue.svg)](https://www.patreon.com/GrovkillenTDer) | [![donate](https://img.shields.io/badge/donate-KoFi-blue.svg)](https://ko-fi.com/grovkillentder) | [![donate](https://img.shields.io/badge/donate-PayPal-blue.svg)](https://www.paypal.me/espeasy) |

-For ways to *support* us, see [this announcement on the forum](https://www.letscontrolit.com/forum/viewtopic.php?f=14&t=5787), or have a look at the [Patreon](https://www.patreon.com/GrovkillenTDer) or [Ko-Fi](https://ko-fi.com/grovkillentder) links above.
+For ways to *support* us, see [this announcement on the forum](https://www.letscontrolit.com/forum/viewtopic.php?f=14&t=5787), or have a look at the [Patreon](https://www.patreon.com/GrovkillenTDer), [Ko-Fi](https://ko-fi.com/grovkillentder) or [PayPal](https://www.paypal.me/espeasy) links above.

 # ESPEasy (development branch)

@@ -22,7 +22,8 @@ for ENV in \
  dev_ESP8266PUYA_1024_VCC\
  hard_SONOFF_POW\
  hard_Shelly_1\
-  esp32dev;\
+  esp32dev\
+  esp32test_1M8_partition;\
 do
  echo
  echo "### Deploying environment $ENV for version $VERSION"
@@ -0,0 +1,61 @@
+  _____ ____  ____
+ | ____/ ___||  _ \ ___  __ _ ___ _   _
+ |  _| \___ \| |_) / _ \/ _` / __| | | |
+ | |___ ___) |  __/  __/ (_| \__ \ |_| |
+ |_____|____/|_|   \___|\__,_|___/\__, |
+                                  |___/
+
+
+This is the distribution folder for ESPeasy.
+In here you will find a flash tool to program the ESP module.
+
+Also a number of binary images is included.
+
+The filename is quite descriptive:
+  ESP_Easy_mega-<date>_<buildType>_<chip>_<memorySize>.bin
+
+Build type can be:  (differ in included plugins)
+- normal  => Only Stable plugins and controllers
+- test    => Stable + Testing
+- dev     => Stable + Testing + Development
+
+There is also a number of special builds:
+- normal_IR => "Normal" + IR receiver/transmitter plugins and library
+- hard_xxxxx => Special builds for some off-the-shelf hardware.
+
+Chip can be:
+- ESP8266      => Most likely option
+- ESP8285      => Used in some Sonoff modules
+- ESP32        => Experimental support at this moment
+- ESP8266PUYA  => For ESP modules with a flash chip labeled "PUYA" (often 1 MB)
+
+The "PUYA" version deserves a bit more attention.
+If you cannot save settings, better try to see if the flash chip has "PUYA" written on it.
+If so, try the "PUYA" build.
+
+MemorySize can be:
+- 1024  => 1 MB flash modules (e.g. almost all Sonoff modules)
+- 2048  => 2 MB flash modules (e.g. Shelly1/WROOM02)
+- 4096  => 4 MB flash modules (e.g. NodeMCU/ESP32)
+
+ESP32 now has 2 builds:
+- esp32dev   Using the default partition layout (1.4 MB for the sketch)
+- esp32test_1M8_partition   Larger sketch partition (1.8MB) smaller SPIFFS (316 kB)
+
+Please note that changing between those versions will destroy the settings!
+The SPIFFS partition will be lost and that contains all settings.
+
+
+To help recover from a bad flash, there are also blank images included.
+- blank_1MB.bin
+- blank_2MB.bin
+- blank_4MB.bin
+
+When the wrong image is flashed, or the module behaves unstable, or is in a reboot loop,
+flash these images first and then the right image for the module.
+
+Another great flash tool can be found here: (Windows only)
+  https://github.com/Grovkillen/ESP_Easy_Flasher
+
+For more information, see: https://github.com/letscontrolit/ESPEasy
+Or our forum: https://www.letscontrolit.com/forum/
@@ -1,3 +1,273 @@
+-------------------------------------------------
+Changes in release mega-20181007 (since mega-20181006)
+-------------------------------------------------
+
+Release date: Sun Oct  7 04:00:09 CEST 2018
+
+Max (2):
+      Force slash to be converted in htmlEscape
+      Fix XSS-Vulnerabilites on wifi configuration pages
+
+Plebs (3):
+      Add three new TOGGLE commands
+      fixed float to int conversion
+      added "mcpgpiotoggle" command
+
+TD-er (3):
+      [ESP32] Allow Wrover dev kit to be used for PIO debug
+      [Stack] Move Arduino 'cont' stack into user RAM
+      [SPIFFS] Make sure to close open files on SPIFFS
+
+
+-------------------------------------------------
+Changes in release mega-20181006 (since mega-20181004)
+-------------------------------------------------
+
+Release date: Sat Oct  6 04:00:13 CEST 2018
+
+TD-er (3):
+      [Stack] Increase stack to 5k and reduce stack allocations in rules
+      [WiFi] Add delay to connection attempts in ControllerSettings
+      [Build flags] Remove NO_EXTRA_4K_HEAP
+
+
+-------------------------------------------------
+Changes in release mega-20181004 (since mega-20181003)
+-------------------------------------------------
+
+Release date: Thu Oct  4 04:00:08 CEST 2018
+
+Bartlomiej Zimon (1):
+      - partial fix for #1723
+
+JojoS (1):
+      added error checking and logging
+
+JojoS62 (5):
+      added float calculation for time to distance conversion
+      added more settings: unit, filtertype and size
+      max distance depends on measurement unit
+      code clean up
+      fixed 'unused variable' warning
+
+TD-er (3):
+      [sendHttp] #1830 Set timeout and early exit on timeout reached
+      [WiFiClient] Set timeout and make it configurable for controllers
+      [Core 2.4.1] Move back to core 2.4.1 from 2.4.2
+
+Thomas (1):
+      Update _P075_Nextion.ino (#1)
+
+
+-------------------------------------------------
+Changes in release mega-20181003 (since mega-20181002)
+-------------------------------------------------
+
+Release date: Wed Oct  3 04:00:18 CEST 2018
+
+David Conran (2):
+      Acknowledge credit & origin of code used in IRTX
+      Acknowledge credit & origin of code used in _P016IR.ino
+
+
+-------------------------------------------------
+Changes in release mega-20181002 (since mega-20181001)
+-------------------------------------------------
+
+Release date: Tue Oct  2 04:00:29 CEST 2018
+
+Plebs (1):
+      split parseTemplate function
+
+TD-er (4):
+      [#1798] Bugfix Sonoff Si7021 stability
+      [ESP32] Add default partition table for reference
+      [ESP32] Update to PIO espressif32@1.4.0
+      [Stack] Report stack usage on ESP32 and increase stack for ESP8266normal
+
+
+-------------------------------------------------
+Changes in release mega-20181001 (since mega-20180930)
+-------------------------------------------------
+
+Release date: Mon Oct  1 13:13:13 CEST 2018
+
+TD-er (4):
+      [#1824] Show stack size on main page
+      [Heap] Use NO_EXTRA_4K_HEAP to get old stack address space
+      [Stack] Check if a block sent to save on SPIFFS is stack allocated
+      [Stack] Revert move Settings from stack to heap
+
+
+-------------------------------------------------
+Changes in release mega-20180930 (since mega-20180927)
+-------------------------------------------------
+
+Release date: Sun Sep 30 04:00:24 CEST 2018
+
+JojoS (5):
+      fixed distance reading
+      on INIT, delete sensordef before adding new
+      removed sensordefs helper structure
+      changed implementation to use shared_ptr instead of helper structure
+      minor change: unit was missing for threshold in 'state' mode
+
+TD-er (2):
+      [Default Settings] Properly clear settings when reset to default
+      [Defaults] Other default initializations
+
+
+-------------------------------------------------
+Changes in release mega-20180927 (since mega-20180924)
+-------------------------------------------------
+
+Release date: Thu Sep 27 04:00:17 CEST 2018
+
+TD-er (7):
+      [ESP32] Change partition size (will clear all settings) and add plugins
+      [Travis] Uninitialized variable in P073_7DGT
+      [Stack] Move Settings from stack to heap
+      [ESP32] RTOS move handle_schedule() to core1 and increase stack
+      [Info] Add board name to the sysinfo page.
+      [ESP32] Split new partition layout to separate build
+      [Build] Add esp32test_1M8_partition build and warning on ESP32 partition
+
+
+-------------------------------------------------
+Changes in release mega-20180924 (since mega-20180923)
+-------------------------------------------------
+
+Release date: Mon Sep 24 04:00:20 CEST 2018
+
+Benno Eigenmann (1):
+      Fix platformio
+
+TD-er (2):
+      [MQTT] Work around for lost MQTT connection
+      [ESP32] Fix I2C handling to allow I2C devices to work
+
+sakinit (1):
+      change to platform version core_esp32_1_3_0
+
+stefan (1):
+      Change type of sensor for MCP and PCF devices
+
+
+-------------------------------------------------
+Changes in release mega-20180923 (since mega-20180922)
+-------------------------------------------------
+
+Release date: Sun Sep 23 04:00:12 CEST 2018
+
+TD-er (2):
+      [MQTT import] Fix crash at boot when plugin is enabled
+      [BME280] Fix slow reading of BME280 causing watchdog resets
+
+sakinit (5):
+      ESP32 build issues fixed
+      Fix ESP32 stack overflow in addPinSelect when called from P1WifiGateway
+      ESP32: Split webserver spiffs filelist into pages
+      Reverted Webserver change
+      ESP32 platform updated to 1.2.0; Webserver replaced by platform one
+
+
+-------------------------------------------------
+Changes in release mega-20180922 (since mega-20180916)
+-------------------------------------------------
+
+Release date: Sat Sep 22 04:00:22 CEST 2018
+
+Gijs Noorlander (1):
+      Revert "Revert "Added 2 new operators in Calculate() function""
+
+TD-er (2):
+      Revert "[Scheduler] Disable command scheduler"
+      Revert "Revert "Fix elseif & Add if-elseif-else nesting levels""
+
+
+-------------------------------------------------
+Changes in release mega-20180916 (since mega-20180915)
+-------------------------------------------------
+
+Release date: Sun Sep 16 04:00:11 CEST 2018
+
+Gijs Noorlander (3):
+      Revert "Added 2 new operators in Calculate() function"
+      Revert "Fix elseif & Add if-elseif-else nesting levels"
+      Added warning to release notes 20180915
+
+TD-er (1):
+      [HW Watchdog] Backgroundtasks instead of yield during rules handling
+
+
+-------------------------------------------------
+Changes in release mega-20180915 (since mega-20180914)
+-------------------------------------------------
+
+Release date: Sat Sep 15 04:00:15 CEST 2018
+Known issue:
+      Causes reboots. (see [#1748](https://github.com/letscontrolit/ESPEasy/issues/1748) )
+
+
+Plebs (1):
+      Added 2 new operators in Calculate
+
+TD-er (4):
+      [Scheduler] Disable command scheduler
+      [Controller settings] Validate settings on load/save
+      [#1713] Make hostname-unitnumber optional & validate settings
+      [#1698] Incorrect sunrise value southern hemisphere
+
+svmac (4):
+      Fix elseif & Add if-elseif-else nesting levels
+      reenabled code about !
+      some code optimization
+      fix mistake
+
+
+-------------------------------------------------
+Changes in release mega-20180914 (since mega-20180910)
+-------------------------------------------------
+
+Release date: Fri Sep 14 04:00:17 CEST 2018
+
+Gijs Noorlander (1):
+      Added PayPal link
+
+giddyhup (1):
+      Fix IR plugin passing received code
+
+Plebs (7):
+      Use parameters inside rules when calling commands
+      few changes
+      fixed ESP32 compatibility issue
+      fixed calls to F-macro
+      adding more parameters to EVENT
+      final version with '=' sign as a prefix to identify the formula in rules
+      added %eventvalue4%
+
+TD-er (2):
+      [Flash tools] Add blank files and README.txt
+      [CrashRecover] Disable failing step based on failed boot count
+
+sakinit (1):
+      Feature: Split webserver spiffs filelist into pages
+
+
+-------------------------------------------------
+Changes in release mega-20180910 (since mega-20180909)
+-------------------------------------------------
+
+Release date: Mon Sep 10 04:00:22 CEST 2018
+
+TD-er (2):
+      [HTTP] Command SendToHttp cannot connect
+      [Domoticz IDX] Allow for IDX of > 9999
+
+sakinit (1):
+      Reduced buffer size to prevent stack overflow
+
+
 -------------------------------------------------
 Changes in release mega-20180909 (since mega-20180908)
 -------------------------------------------------
@@ -0,0 +1,7 @@
+# Name,   Type, SubType, Offset,  Size, Flags
+nvs,      data, nvs,     0x9000,  0x5000,
+otadata,  data, ota,     0xe000,  0x2000,
+app0,     app,  ota_0,   0x10000, 0x140000,
+app1,     app,  ota_1,   0x150000,0x140000,
+eeprom,   data, 0x99,    0x290000,0x1000,
+spiffs,   data, spiffs,  0x291000,0x16F000,
@@ -0,0 +1,7 @@
+# Name,   Type, SubType, Offset,  Size, Flags
+nvs,      data, nvs,     0x9000,  0x5000,
+otadata,  data, ota,     0xe000,  0x2000,
+app0,     app,  ota_0,   0x10000, 0x1D0000,
+app1,     app,  ota_1,   0x1E0000,0x1D0000,
+eeprom,   data, 0x99,    0x3B0000,0x1000,
+spiffs,   data, spiffs,  0x3B1000,0x4F000,
@@ -6,12 +6,13 @@
 // ---------------------------------------------------------------------------

 #include "NewPingESP8266.h"
-
+//#include "ESPEasy-Globals.h"
 // ---------------------------------------------------------------------------
 // NewPingESP8266 constructor
 // ---------------------------------------------------------------------------

 NewPingESP8266::NewPingESP8266(uint32_t trigger_pin, uint32_t echo_pin, unsigned int max_cm_distance) {
+	_errorState = STATUS_SENSOR_READY;
 #if DO_BITWISE == true
 	_triggerBit = digitalPinToBitMask(trigger_pin); // Get the port register bitmask for the trigger pin.
 	_echoBit = digitalPinToBitMask(echo_pin);       // Get the port register bitmask for the echo pin.
@@ -58,7 +59,10 @@ unsigned int NewPingESP8266::ping(unsigned int max_cm_distance) {
 		while (!digitalRead(_echoPin))                // Wait for the ping echo.
 	#endif
 	  {
-			if (micros() > _max_time) return NO_ECHO; // Stop the loop and return NO_ECHO (false) if we're beyond the set maximum distance.
+			if ((_max_cm_distance > 0) && (micros() > _max_time)) {
+				_errorState = STATUS_MAX_DISTANCE_EXCEEDED;
+				return NO_ECHO; // Stop the loop and return NO_ECHO (false) if we're beyond the set maximum distance.
+			}
 	  }
 #else
 	#if DO_BITWISE == true
@@ -67,10 +71,14 @@ unsigned int NewPingESP8266::ping(unsigned int max_cm_distance) {
 		while (digitalRead(_echoPin))                 // Wait for the ping echo.
 	#endif
 		{
-			if (micros() > _max_time) return NO_ECHO; // Stop the loop and return NO_ECHO (false) if we're beyond the set maximum distance.
+			if ((_max_cm_distance > 0) && (micros() > _max_time)) {
+				_errorState = STATUS_MAX_DISTANCE_EXCEEDED;
+				return NO_ECHO; // Stop the loop and return NO_ECHO (false) if we're beyond the set maximum distance.
+			}
 		}
 #endif

+	_errorState = STATUS_MEASUREMENT_VALID;
 	return (micros() - (_max_time - _maxEchoTime) - PING_OVERHEAD); // Calculate ping time, include overhead.
 }

@@ -144,15 +152,39 @@ boolean NewPingESP8266::ping_trigger() {
 	#endif

 	#if URM37_ENABLED == true
-		if (!(*_echoInput & _echoBit)) return false;            // Previous ping hasn't finished, abort.
+		if (!(*_echoInput & _echoBit)) {								      	// Previous ping hasn't finished, abort.{
+			_errorState = STATUS_ECHO_STATE_ERROR;
+			return false;
+		}
 		_max_time = micros() + _maxEchoTime + MAX_SENSOR_DELAY; // Maximum time we'll wait for ping to start (most sensors are <450uS, the SRF06 can take up to 34,300uS!)
 		while (*_echoInput & _echoBit)                          // Wait for ping to start.
-			if (micros() > _max_time) return false;             // Took too long to start, abort.
+		{
+			if (millis() > (start + 50)) {
+				_errorState = STATUS_ECHO_START_TIMEOUT_50ms;
+				return false;
+			}
+			if ((_max_cm_distance > 0) && (micros() > _max_time)) {	// check max. distance if != 0 cm
+				_errorState = STATUS_ECHO_START_TIMEOUT_DISTANCE;
+				return false;             													// echo too late, max distance exceeded
+			}
+		}
 	#else
-		if (*_echoInput & _echoBit) return false;               // Previous ping hasn't finished, abort.
+		if (*_echoInput & _echoBit) { 				              		// Previous ping hasn't finished, abort.
+			_errorState = STATUS_ECHO_STATE_ERROR;
+			return false;
+		}
 		_max_time = micros() + _maxEchoTime + MAX_SENSOR_DELAY; // Maximum time we'll wait for ping to start (most sensors are <450uS, the SRF06 can take up to 34,300uS!)
 		while (!(*_echoInput & _echoBit))                       // Wait for ping to start.
-			if (micros() > _max_time) return false;             // Took too long to start, abort.
+		{
+			if (millis() > (start + 50)) {
+				_errorState = STATUS_ECHO_START_TIMEOUT_50ms;
+				return false;
+			}
+			if ((_max_cm_distance > 0) && (micros() > _max_time)) {	// check max. distance if != 0 cm
+				_errorState = STATUS_ECHO_START_TIMEOUT_DISTANCE;
+				return false;             													// echo too late, max distance exceeded
+			}
+		}
 	#endif
 #else
 	#if ONE_PIN_ENABLED == true
@@ -170,30 +202,51 @@ boolean NewPingESP8266::ping_trigger() {
 	#endif

 	#if URM37_ENABLED == true
-		if (!digitalRead(_echoPin)) return false;               // Previous ping hasn't finished, abort.
+		if (!digitalRead(_echoPin)) {
+			_errorState = STATUS_ECHO_STATE_ERROR;
+			return false;                // Previous ping hasn't finished, abort.
+		}
 		_max_time = micros() + _maxEchoTime + MAX_SENSOR_DELAY; // Maximum time we'll wait for ping to start (most sensors are <450uS, the SRF06 can take up to 34,300uS!)
 		while (digitalRead(_echoPin))                           // Wait for ping to start.
 		{
-			if (millis() > (start + 50)) return false;
-			if (micros() > _max_time) return false;             // Took too long to start, abort.
+			if (millis() > (start + 50)) {
+				_errorState = STATUS_ECHO_START_TIMEOUT_50ms;
+				return false;
+			}
+			if ((_max_cm_distance > 0) && (micros() > _max_time)) {	// check max. distance if != 0 cm
+				_errorState = STATUS_ECHO_START_TIMEOUT_DISTANCE;
+				return false;             													// echo too late, max distance exceeded
+			}
 		}
 	#else
-		if (digitalRead(_echoPin)) return false;                // Previous ping hasn't finished, abort.
+		if (digitalRead(_echoPin)) {
+			_errorState = STATUS_ECHO_STATE_ERROR;
+			return false;                // Previous ping hasn't finished, abort.
+		}
 		_max_time = micros() + _maxEchoTime + MAX_SENSOR_DELAY; // Maximum time we'll wait for ping to start (most sensors are <450uS, the SRF06 can take up to 34,300uS!)
 		while (!digitalRead(_echoPin))                          // Wait for ping to start.
 		{
-			if (millis() > (start + 50)) return false;
-			if (micros() > _max_time) return false;             // Took too long to start, abort.
+			if (millis() > (start + 50)) {
+				_errorState = STATUS_ECHO_START_TIMEOUT_50ms;
+				return false;
+			}
+			if ((_max_cm_distance > 0) && (micros() > _max_time)) {	// check max. distance if != 0 cm
+				_errorState = STATUS_ECHO_START_TIMEOUT_DISTANCE;
+				return false;             													// echo too late, max distance exceeded
+			}
  	}
 	#endif
 #endif

 	_max_time = micros() + _maxEchoTime; // Ping started, set the time-out.
+	_errorState = STATUS_ECHO_TRIGGERED;
+
 	return true;                         // Ping started successfully.
 }


 void NewPingESP8266::set_max_distance(unsigned int max_cm_distance) {
+	_max_cm_distance = max_cm_distance;
 #if ROUNDING_ENABLED == false
 	_maxEchoTime = min(max_cm_distance + 1, (unsigned int) MAX_SENSOR_DISTANCE + 1) * US_ROUNDTRIP_CM; // Calculate the maximum distance in uS (no rounding).
 #else
@@ -222,3 +275,12 @@ unsigned int NewPingESP8266::convert_in(unsigned int echoTime) {
 	return NewPingESP8266Convert(echoTime, US_ROUNDTRIP_IN); // Convert uS to inches.
 #endif
 }
+
+float NewPingESP8266::convert_cm_F(unsigned int echoTime) {
+	return ((float)echoTime / US_ROUNDTRIP_CM);              // Convert uS to centimeters (no rounding).
+}
+
+
+float NewPingESP8266::convert_in_F(unsigned int echoTime) {
+	return ((float)echoTime / US_ROUNDTRIP_IN);              // Convert uS to inches (no rounding).
+}
@@ -194,15 +194,29 @@

 class NewPingESP8266 {
 	public:
+		enum errorState {
+			STATUS_SENSOR_READY,  								// no error, no measruement started
+			STATUS_MEASUREMENT_VALID, 						// no errors
+			STATUS_ECHO_TRIGGERED,								// echo triggered, intermediate state
+			STATUS_MAX_DISTANCE_EXCEEDED, 				// echo too late, maximum distance exceeded
+			STATUS_ECHO_START_TIMEOUT_50ms, 			// no echo start signal after 50 ms
+			STATUS_ECHO_START_TIMEOUT_DISTANCE,		// no echo start signal after max. distance
+			STATUS_ECHO_STATE_ERROR 				 			// echopin level not low after triggered
+		};
+
 		NewPingESP8266(uint32_t trigger_pin, uint32_t echo_pin, unsigned int max_cm_distance = MAX_SENSOR_DISTANCE);
+		~NewPingESP8266() { };
 		unsigned int ping(unsigned int max_cm_distance = 0);
 		unsigned long ping_cm(unsigned int max_cm_distance = 0);
 		unsigned long ping_in(unsigned int max_cm_distance = 0);
 		unsigned long ping_median(uint32_t it = 5, unsigned int max_cm_distance = 0);
 		static unsigned int convert_cm(unsigned int echoTime);
 		static unsigned int convert_in(unsigned int echoTime);
+		static float convert_cm_F(unsigned int echoTime);
+		static float convert_in_F(unsigned int echoTime);

-		unsigned int getMaxEchoTime() { return _maxEchoTime; }
+		unsigned int getMaxEchoTime() { return _maxEchoTime; };
+		errorState getErrorState() { return _errorState; };
 	private:
 		boolean ping_trigger();
 		void set_max_distance(unsigned int max_cm_distance);
@@ -218,6 +232,8 @@ class NewPingESP8266 {
 #endif
 		unsigned int _maxEchoTime;
 		unsigned long _max_time;
+		errorState _errorState;
+		unsigned int _max_cm_distance;
 };


@@ -65,6 +65,7 @@ platform                  = https://github.com/platformio/platform-espressif8266

 [core_esp32_0_12_0]
 platform                  = espressif32@0.12.0
+lib_deps                  = "ESP32WebServer"

 [core_esp32_1_2_0]
 platform                  = espressif32@1.2.0
@@ -72,20 +73,23 @@ platform                  = espressif32@1.2.0
 [core_esp32_1_3_0]
 platform                  = espressif32@1.3.0

+[core_esp32_1_4_0]
+platform                  = espressif32@1.4.0
+
 [core_esp32_stage]
 platform                  = https://github.com/platformio/platform-espressif32.git#feature/stage

 [core_esp32]
-platform                  = ${core_esp32_0_12_0.platform}
+platform                  = ${core_esp32_1_4_0.platform}
 build_unflags             = -Wall
 build_flags               = -D BUILD_GIT='"${sysenv.TRAVIS_TAG}"'
-                            -lstdc++ -lsupc++
 lib_ignore                = AS_BH1750, ESP8266WiFi, ESP8266Ping, ESP8266WebServer, ESP8266HTTPUpdateServer, ESP8266mDNS, IRremoteESP8266, ESPEasy_ESP8266Ping, SerialSensors, SDM
-lib_deps                  = ESP32WebServer
+lib_deps                  = ""
 monitor_speed             = 115200



+
 ; Build Flags:
 ;  -DUSE_CONFIG_OVERRIDE
 ; lwIP 1.4 (Default)
@@ -100,11 +104,16 @@ monitor_speed             = 115200
 ;  -DVTABLES_IN_DRAM
 ; VTABLES in IRAM
 ;  -DVTABLES_IN_IRAM
-
+; NO_EXTRA_4K_HEAP - this forces the default NONOS-SDK user's heap location
+;     Default currently overlaps cont stack (Arduino) with sys stack (System)
+;     to save up-to 4 kB of heap. (starting core_2.4.2)
+; ESP8266_DISABLE_EXTRA4K  - Calls disable_extra4k_at_link_time() from setup
+;                            to force the linker keep user's stack in user ram.
+; CONT_STACKSIZE to set the 'cont' (Arduino) stack size. Default = 4096

 [common]
 board_build.f_cpu         = 80000000L
-build_unflags             = ""
+build_unflags             =
 build_flags               = -D BUILD_GIT='"${sysenv.TRAVIS_TAG}"'
                   -D NDEBUG
                   -lstdc++ -lsupc++
@@ -119,18 +128,20 @@ lib_archive               = false
 upload_speed              = 460800
 framework                 = arduino
 board                     = esp12e
-platform                  = ${core_2_4_2.platform}
+platform                  = ${core_2_4_1.platform}
 monitor_speed             = 115200

-
 [normal]
 platform                  = ${common.platform}
+build_flags               = -DCONT_STACKSIZE=5120

 [testing]
-platform                  = ${core_2_4_2.platform}
+platform                  = ${core_2_4_1.platform}
+build_flags               = -DCONT_STACKSIZE=5120 -DPLUGIN_BUILD_TESTING

 [dev]
-platform                  = ${core_2_4_2.platform}
+platform                  = ${core_2_4_1.platform}
+build_flags               = -DCONT_STACKSIZE=5120 -DPLUGIN_BUILD_DEV

 [ir]
 lib_ignore                = ESP32_ping, ESP32WebServer
@@ -158,7 +169,7 @@ board_build.flash_mode    = ${esp8266_1M.board_build.flash_mode}
 board_build.f_cpu         = ${esp8266_1M.board_build.f_cpu}
 build_unflags             = ${common.build_unflags}
 build_flags               = ${common.build_flags} -Wl,-Tesp8266.flash.1m128.ld
-platform                  = ${core_2_4_2.platform}
+platform                  = ${core_2_4_1.platform}

 [Sonoff_8285]
 board_upload.maximum_size = ${esp8285_1M.board_upload.maximum_size}
@@ -167,7 +178,7 @@ board_build.f_cpu         = ${esp8285_1M.board_build.f_cpu}
 board                     = ${esp8285_1M.board}
 build_unflags             = ${esp8285_1M.build_unflags}
 build_flags               = ${esp8285_1M.build_flags}
-platform                  = ${core_2_4_2.platform}
+platform                  = ${core_2_4_1.platform}

 [espWroom2M]
 board_build.flash_mode    = dout
@@ -193,6 +204,25 @@ build_flags               = ${common.build_flags} -Wl,-Tesp8266.flash.4m1m.ld
 ; Will probably not work, not tested and guaranteed to take a few hours time of some     ;
 ; still trying to build the version without reading this warning.                        ;
 ; *********************************************************************
+[env:esp-wrover-kit_test_1M8_partition]
+platform                  = ${core_esp32.platform}
+board                     = esp-wrover-kit
+build_unflags             = ${core_esp32.build_unflags}
+build_flags               = ${core_esp32.build_flags}  -DPLUGIN_SET_TEST_ESP32
+lib_deps                  = ${core_esp32.lib_deps}
+lib_ignore                = ${core_esp32.lib_ignore}
+lib_ldf_mode              = ${common.lib_ldf_mode}
+lib_archive               = ${common.lib_archive}
+framework                 = ${common.framework}
+upload_speed              = ${common.upload_speed}
+upload_protocol           = ftdi
+debug_tool                = ftdi
+monitor_speed             = ${common.monitor_speed}
+board_build.partitions    = esp32_partition_app1810k_spiffs316k.csv
+board_upload.maximum_size = 1900544
+debug_extra_cmds          = break Misc.ino:3011
+
+
 [env:esp32dev]
 platform                  = ${core_esp32.platform}
 board                     = esp32dev
@@ -206,6 +236,21 @@ framework                 = ${common.framework}
 upload_speed              = ${common.upload_speed}
 monitor_speed             = ${common.monitor_speed}

+[env:esp32test_1M8_partition]
+platform                  = ${core_esp32.platform}
+board                     = esp32dev
+build_unflags             = ${core_esp32.build_unflags}
+build_flags               = ${core_esp32.build_flags}  -DPLUGIN_SET_TEST_ESP32
+lib_deps                  = ${core_esp32.lib_deps}
+lib_ignore                = ${core_esp32.lib_ignore}
+lib_ldf_mode              = ${common.lib_ldf_mode}
+lib_archive               = ${common.lib_archive}
+framework                 = ${common.framework}
+upload_speed              = ${common.upload_speed}
+monitor_speed             = ${common.monitor_speed}
+board_build.partitions    = esp32_partition_app1810k_spiffs316k.csv
+board_upload.maximum_size = 1900544
+

 ;;; NORMAL (STABLE) ; ****; ****; ****; ****; ****; ****; ****; ****; ****; ****; ****;;;;
 ; normal version with stable plugins                                                     ;
@@ -226,7 +271,7 @@ board_upload.maximum_size = ${esp8266_1M.board_upload.maximum_size}
 board_build.f_cpu         = ${esp8266_1M.board_build.f_cpu}
 board_build.flash_mode    = ${esp8266_1M.board_build.flash_mode}
 build_unflags             = ${esp8266_1M.build_unflags}
-build_flags               = ${esp8266_1M.build_flags}
+build_flags               = ${esp8266_1M.build_flags} ${normal.build_flags}

 ; NORMAL: 1024k for esp8285 ----------------------
 [env:normal_ESP8285_1024]
@@ -243,7 +288,7 @@ board_upload.maximum_size = ${esp8285_1M.board_upload.maximum_size}
 board_build.f_cpu         = ${esp8285_1M.board_build.f_cpu}
 board_build.flash_mode    = ${esp8285_1M.board_build.flash_mode}
 build_unflags             = ${esp8285_1M.build_unflags}
-build_flags               = ${esp8285_1M.build_flags}
+build_flags               = ${esp8285_1M.build_flags} ${normal.build_flags}

 ; NORMAL: 2048k version --------------------------
 [env:normal_WROOM02_2048]
@@ -259,7 +304,7 @@ board                     = ${espWroom2M.board}
 board_build.f_cpu         = ${espWroom2M.board_build.f_cpu}
 board_build.flash_mode    = ${espWroom2M.board_build.flash_mode}
 build_unflags             = ${espWroom2M.build_unflags}
-build_flags               = ${espWroom2M.build_flags}
+build_flags               = ${espWroom2M.build_flags} ${normal.build_flags}

 ; NORMAL: 4096k version --------------------------
 [env:normal_ESP8266_4096]
@@ -275,7 +320,7 @@ board                     = ${common.board}
 board_build.f_cpu         = ${esp8266_4M.board_build.f_cpu}
 board_build.flash_mode    = ${esp8266_4M.board_build.flash_mode}
 build_unflags             = ${esp8266_4M.build_unflags}
-build_flags               = ${esp8266_4M.build_flags}
+build_flags               = ${esp8266_4M.build_flags} ${normal.build_flags}


 ; NORMAL IR: 4096k version --------------------------
@@ -293,7 +338,7 @@ board                     = ${common.board}
 board_build.f_cpu         = ${esp8266_4M.board_build.f_cpu}
 board_build.flash_mode    = ${esp8266_4M.board_build.flash_mode}
 build_unflags             = ${esp8266_4M.build_unflags}
-build_flags               = ${esp8266_4M.build_flags} -DPLUGIN_BUILD_NORMAL_IR
+build_flags               = ${esp8266_4M.build_flags} ${normal.build_flags} -DPLUGIN_BUILD_NORMAL_IR


 ;;; TESTING ; ****; ****; ****; ****; ****; ****; ****; ****; ****; ****; ****; ****; ****
@@ -315,7 +360,7 @@ board_upload.maximum_size = ${esp8266_1M.board_upload.maximum_size}
 board_build.flash_mode    = ${esp8266_1M.board_build.flash_mode}
 board_build.f_cpu         = ${esp8266_1M.board_build.f_cpu}
 build_unflags             = ${esp8266_1M.build_unflags}
-build_flags               = ${esp8266_1M.build_flags} -D PLUGIN_BUILD_TESTING
+build_flags               = ${esp8266_1M.build_flags} ${testing.build_flags}

 ; TEST: 1024k for esp8285 ------------------------
 [env:test_ESP8285_1024]
@@ -332,7 +377,7 @@ board_build.f_cpu         = ${esp8285_1M.board_build.f_cpu}
 board_build.flash_mode    = ${esp8285_1M.board_build.flash_mode}
 board                     = ${esp8285_1M.board}
 build_unflags             = ${esp8285_1M.build_unflags}
-build_flags               = ${esp8285_1M.build_flags} -D PLUGIN_BUILD_TESTING
+build_flags               = ${esp8285_1M.build_flags} ${testing.build_flags}

 ; TEST: 2048k version ----------------------------
 [env:test_WROOM02_2048]
@@ -348,7 +393,7 @@ board_build.f_cpu         = ${espWroom2M.board_build.f_cpu}
 board_build.flash_mode    = ${espWroom2M.board_build.flash_mode}
 board                     = ${espWroom2M.board}
 build_unflags             = ${espWroom2M.build_unflags}
-build_flags               = ${espWroom2M.build_flags} -D PLUGIN_BUILD_TESTING
+build_flags               = ${espWroom2M.build_flags} ${testing.build_flags}

 ; TEST: 4096k version ----------------------------
 [env:test_ESP8266_4096]
@@ -364,7 +409,7 @@ monitor_speed             = ${common.monitor_speed}
 board_build.f_cpu         = ${esp8266_4M.board_build.f_cpu}
 board_build.flash_mode    = ${esp8266_4M.board_build.flash_mode}
 build_unflags             = ${esp8266_4M.build_unflags}
-build_flags               = ${esp8266_4M.build_flags} -D PLUGIN_BUILD_TESTING
+build_flags               = ${esp8266_4M.build_flags} ${testing.build_flags}

 ; TEST: 4096k version + FEATURE_ADC_VCC ----------
 [env:test_ESP8266_4096_VCC]
@@ -380,7 +425,7 @@ monitor_speed             = ${common.monitor_speed}
 board_build.f_cpu         = ${esp8266_4M.board_build.f_cpu}
 board_build.flash_mode    = ${esp8266_4M.board_build.flash_mode}
 build_unflags             = ${esp8266_4M.build_unflags}
-build_flags               = ${esp8266_4M.build_flags} -D PLUGIN_BUILD_TESTING -D FEATURE_ADC_VCC=true
+build_flags               = ${esp8266_4M.build_flags} ${testing.build_flags} -D FEATURE_ADC_VCC=true



@@ -403,7 +448,7 @@ board_build.f_cpu         = ${esp8266_1M.board_build.f_cpu}
 board_build.flash_mode    = ${esp8266_1M.board_build.flash_mode}
 board                     = ${common.board}
 build_unflags             = ${esp8266_1M.build_unflags}
-build_flags               = ${esp8266_1M.build_flags} -D PLUGIN_BUILD_DEV
+build_flags               = ${esp8266_1M.build_flags} ${dev.build_flags}

 ; DEV: 1024k for esp8285 -------------------------
 [env:dev_ESP8285_1024]
@@ -420,7 +465,7 @@ board_build.f_cpu         = ${esp8285_1M.board_build.f_cpu}
 board_build.flash_mode    = ${esp8285_1M.board_build.flash_mode}
 board                     = ${esp8285_1M.board}
 build_unflags             = ${esp8285_1M.build_unflags}
-build_flags               = ${esp8285_1M.build_flags} -D PLUGIN_BUILD_DEV
+build_flags               = ${esp8285_1M.build_flags} ${dev.build_flags}

 ; DEV: 2048k version -----------------------------
 [env:dev_WROOM02_2048]
@@ -436,7 +481,7 @@ board_build.f_cpu         = ${espWroom2M.board_build.f_cpu}
 board_build.flash_mode    = ${espWroom2M.board_build.flash_mode}
 board                     = ${espWroom2M.board}
 build_unflags             = ${espWroom2M.build_unflags}
-build_flags               = ${espWroom2M.build_flags} -D PLUGIN_BUILD_DEV
+build_flags               = ${espWroom2M.build_flags} ${dev.build_flags}

 ; DEV : 4096k version ----------------------------
 [env:dev_ESP8266_4096]
@@ -452,7 +497,7 @@ monitor_speed             = ${common.monitor_speed}
 board_build.f_cpu         = ${esp8266_4M.board_build.f_cpu}
 board_build.flash_mode    = ${esp8266_4M.board_build.flash_mode}
 build_unflags             = ${esp8266_4M.build_unflags}
-build_flags               = ${esp8266_4M.build_flags} -D PLUGIN_BUILD_DEV
+build_flags               = ${esp8266_4M.build_flags} ${dev.build_flags}



@@ -475,7 +520,7 @@ board_upload.maximum_size = ${esp8266_1M.board_upload.maximum_size}
 board_build.f_cpu         = ${esp8266_1M.board_build.f_cpu}
 board_build.flash_mode    = ${esp8266_1M.board_build.flash_mode}
 build_unflags             = ${esp8266_1M.build_unflags}
-build_flags               = ${esp8266_1M.build_flags} -D PLUGIN_BUILD_DEV -D FLASH_QUIRK_WRITE_0_TO_1
+build_flags               = ${esp8266_1M.build_flags} ${dev.build_flags} -D FLASH_QUIRK_WRITE_0_TO_1

 ; DEV+PUYA : 1024k version + FEATURE_ADC_VCC -----
 [env:dev_ESP8266PUYA_1024_VCC]
@@ -492,7 +537,7 @@ board_upload.maximum_size = ${esp8266_1M.board_upload.maximum_size}
 board_build.f_cpu         = ${esp8266_1M.board_build.f_cpu}
 board_build.flash_mode    = ${esp8266_1M.board_build.flash_mode}
 build_unflags             = ${esp8266_1M.build_unflags}
-build_flags               = ${esp8266_1M.build_flags} -D PLUGIN_BUILD_DEV -D FLASH_QUIRK_WRITE_0_TO_1 -D FEATURE_ADC_VCC=true
+build_flags               = ${esp8266_1M.build_flags} ${dev.build_flags} -D FLASH_QUIRK_WRITE_0_TO_1 -D FEATURE_ADC_VCC=true



@@ -131,7 +131,8 @@ String doExecuteCommand(const char * cmd, struct EventStruct *event, const char*
 	  COMMAND_CASE("taskclear"              , Command_Task_Clear);                 // Tasks.h
 	  COMMAND_CASE("taskclearall"           , Command_Task_ClearAll);              // Tasks.h
 	  COMMAND_CASE("taskrun"                , Command_Task_Run);                   // Tasks.h
-	  COMMAND_CASE("taskvalueset"           , Command_Task_ValueSet);              // Tasks.h
+    COMMAND_CASE("taskvalueset"           , Command_Task_ValueSet);              // Tasks.h
+    COMMAND_CASE("taskvaluetoggle"        , Command_Task_ValueToggle);           // Tasks.h
 	  COMMAND_CASE("taskvaluesetandrun"     , Command_Task_ValueSetAndRun);        // Tasks.h
 	  COMMAND_CASE("timerpause"             , Command_Timer_Pause);                // Timers.h
 	  COMMAND_CASE("timerresume"            , Command_Timer_Resume);               // Timers.h
@@ -216,11 +217,11 @@ void ExecuteCommand(byte source, const char *Line)
 	// since commands can originate from anywhere.
 	TempEvent.Source = source;
 	GetArgv(Line, cmd, 1);
-	if (GetArgv(Line, TmpStr1, 2)) TempEvent.Par1 = str2int(TmpStr1);
-	if (GetArgv(Line, TmpStr1, 3)) TempEvent.Par2 = str2int(TmpStr1);
-	if (GetArgv(Line, TmpStr1, 4)) TempEvent.Par3 = str2int(TmpStr1);
-	if (GetArgv(Line, TmpStr1, 5)) TempEvent.Par4 = str2int(TmpStr1);
-	if (GetArgv(Line, TmpStr1, 6)) TempEvent.Par5 = str2int(TmpStr1);
+  if (GetArgv(Line, TmpStr1, 2)) TempEvent.Par1 = CalculateParam(TmpStr1);
+	if (GetArgv(Line, TmpStr1, 3)) TempEvent.Par2 = CalculateParam(TmpStr1);
+	if (GetArgv(Line, TmpStr1, 4)) TempEvent.Par3 = CalculateParam(TmpStr1);
+	if (GetArgv(Line, TmpStr1, 5)) TempEvent.Par4 = CalculateParam(TmpStr1);
+	if (GetArgv(Line, TmpStr1, 6)) TempEvent.Par5 = CalculateParam(TmpStr1);

  if (source == VALUE_SOURCE_WEB_FRONTEND) {
    // Must run immediately, to see result in web frontend
@@ -24,7 +24,8 @@ String Command_HTTP_SendToHTTP(struct EventStruct *event, const char* Line)
 		}
 		WiFiClient client;
 		const int port_int = port.toInt();
-		if (client.connect(host.c_str(), port_int) != 1) {
+		const bool connected = client.connect(host.c_str(), port_int) == 1;
+		if (connected) {
 			String hostportString = host;
 			if (port_int != 0 && port_int != 80) {
 				hostportString += ':';
@@ -30,6 +30,15 @@ String Command_Task_ValueSet(struct EventStruct *event, const char* Line)
 	return return_command_success();
 }

+String Command_Task_ValueToggle(struct EventStruct *event, const char* Line)
+{
+	const int result = round(UserVar[(VARS_PER_TASK * (event->Par1 - 1)) + event->Par2 - 1]);
+	if (result == 0 || result == 1) {
+	  UserVar[(VARS_PER_TASK * (event->Par1 - 1)) + event->Par2 - 1] = !result;
+	}
+	return return_command_success();
+}
+
 String Command_Task_ValueSetAndRun(struct EventStruct *event, const char* Line)
 {
 	char TmpStr1[INPUT_COMMAND_SIZE];
@@ -133,7 +133,7 @@ bool MQTTConnect(int controller_idx)
 {
  ++mqtt_reconnect_count;
  ControllerSettingsStruct ControllerSettings;
-  LoadControllerSettings(controller_idx, (byte*)&ControllerSettings, sizeof(ControllerSettings));
+  LoadControllerSettings(controller_idx, ControllerSettings);
  if (!ControllerSettings.checkHostReachable(true))
    return false;
  if (MQTTclient.connected()) {
@@ -141,6 +141,7 @@ bool MQTTConnect(int controller_idx)
    updateMQTTclient_connected();
  }
  mqtt = WiFiClient(); // workaround see: https://github.com/esp8266/Arduino/issues/4497#issuecomment-373023864
+  mqtt.setTimeout(ControllerSettings.ClientTimeout);
  if (ControllerSettings.UseDNS) {
    MQTTclient.setServer(ControllerSettings.getHost().c_str(), ControllerSettings.Port);
  } else {
@@ -161,6 +162,15 @@ bool MQTTConnect(int controller_idx)
    clientid = F("ESPClient_");
    clientid += WiFi.macAddress();
  }
+  // Work-around for 'lost connections' to the MQTT broker.
+  // If the broker thinks the connection is still alive, a reconnect from the
+  // client will be refused.
+  // To overcome this issue, append the number of reconnects to the client ID to
+  // make it different from the previous one.
+  if (wifi_reconnects >= 1) {
+    clientid += F("_");
+    clientid += wifi_reconnects;
+  }

  String LWTTopic = ControllerSettings.MQTTLwtTopic;
  if(LWTTopic.length() == 0)
@@ -309,7 +319,7 @@ void MQTTStatus(String& status)
  ControllerSettingsStruct ControllerSettings;
  int enabledMqttController = firstEnabledMQTTController();
  if (enabledMqttController >= 0) {
-    LoadControllerSettings(enabledMqttController, (byte*)&ControllerSettings, sizeof(ControllerSettings));
+    LoadControllerSettings(enabledMqttController, ControllerSettings);
    String pubname = ControllerSettings.Subscribe;
    pubname.replace(F("/#"), F("/status"));
    parseSystemVariables(pubname, false);
@@ -68,6 +68,9 @@
 #if defined(ESP32)
  #define USE_RTOS_MULTITASKING
 #endif
+#ifdef M5STACK_ESP
+//  #include <M5Stack.h>
+#endif

 #define DEFAULT_USE_RULES                       false   // (true|false) Enable Rules?

@@ -188,6 +191,8 @@

 #define MAX_FLASHWRITES_PER_DAY           100 // per 24 hour window
 #define INPUT_COMMAND_SIZE                240 // Affects maximum command length in rules and other commands
+// FIXME TD-er: INPUT_COMMAND_SIZE is also used in commands where simply a check for valid parameter is needed
+// and some may need less memory. (which is stack allocated)

 #define NODE_TYPE_ID_ESP_EASY_STD           1
 #define NODE_TYPE_ID_ESP_EASYM_STD         17
@@ -223,6 +228,9 @@
 // N.B. Retries without a connection to wifi do not count as retry.
 #define CONTROLLER_DELAY_QUEUE_RETRY_MAX   10
 #define CONTROLLER_DELAY_QUEUE_RETRY_DFLT  10
+// Timeout of the client in msec.
+#define CONTROLLER_CLIENTTIMEOUT_MAX 1000
+#define CONTROLLER_CLIENTTIMEOUT_DFLT 100


 #define PLUGIN_INIT_ALL                     1
@@ -297,7 +305,11 @@
 #if defined(PLUGIN_BUILD_TESTING) || defined(PLUGIN_BUILD_DEV)
  #define DEVICES_MAX                      75
 #else
-  #define DEVICES_MAX                      50
+  #ifdef ESP32
+    #define DEVICES_MAX                      75
+  #else
+    #define DEVICES_MAX                      50
+  #endif
 #endif

 #if defined(ESP8266)
@@ -325,6 +337,8 @@
 #define RULESETS_MAX                        4
 #define RULES_BUFFER_SIZE                  64
 #define NAME_FORMULA_LENGTH_MAX            40
+#define RULES_IF_MAX_NESTING_LEVEL          4
+
 #define UDP_PACKETSIZE_MAX               2048

 #define PIN_MODE_UNDEFINED                  0
@@ -357,6 +371,9 @@
 #define SENSOR_TYPE_LONG                   20
 #define SENSOR_TYPE_WIND                   21

+#define UNIT_NUMBER_MAX                  9999  // Stored in Settings.Unit
+#define DOMOTICZ_MAX_IDX            999999999  // Looks like it is an unsigned int, so could be up to 4 bln.
+
 #define VALUE_SOURCE_SYSTEM                 1
 #define VALUE_SOURCE_SERIAL                 2
 #define VALUE_SOURCE_HTTP                   3
@@ -393,14 +410,21 @@
 #endif

 // Forward declaration
+struct ControllerSettingsStruct;
 void scheduleNextDelayQueue(unsigned long id, unsigned long nextTime);
-String LoadControllerSettings(int ControllerIndex, byte* memAddress, int datasize);
+String LoadControllerSettings(int ControllerIndex, ControllerSettingsStruct& controller_settings);
 String get_formatted_Controller_number(int controller_index);
 bool loglevelActiveFor(byte logLevel);
 void addToLog(byte loglevel, const String& string);
 void addToLog(byte logLevel, const __FlashStringHelper* flashString);
 void statusLED(boolean traffic);
 void backgroundtasks();
+uint32_t getCurrentFreeStack();
+uint32_t getFreeStackWatermark();
+bool canYield();
+
+bool getBitFromUL(uint32_t number, byte bitnr);
+void setBitToUL(uint32_t& number, byte bitnr, bool value);

 enum SettingsType {
  BasicSettings_Type = 0,
@@ -512,10 +536,10 @@ bool showSettingsFileLayout = false;
  #define FILE_RULES        "/rules1.txt"
  #include <WiFi.h>
  #include  "esp32_ping.h"
-  #include <ESP32WebServer.h>
+  #include <WebServer.h>
  #include "SPIFFS.h"
  #include <rom/rtc.h>
-  ESP32WebServer WebServer(80);
+  WebServer WebServer(80);
  #ifdef FEATURE_MDNS
    #include <ESPmDNS.h>
  #endif
@@ -659,17 +683,42 @@ struct SettingsStruct
    clearAll();
  }

+  // VariousBits1 defaults to 0, keep in mind when adding bit lookups.
+  bool appendUnitToHostname() {  return !getBitFromUL(VariousBits1, 1); }
+  void appendUnitToHostname(bool value) { setBitToUL(VariousBits1, 1, !value); }
+
+  void validate() {
+    if (UDPPort > 65535) UDPPort = 0;
+
+    if (Latitude  < -90.0  || Latitude > 90.0) Latitude = 0.0;
+    if (Longitude < -180.0 || Longitude > 180.0) Longitude = 0.0;
+    if (VariousBits1 > (1 << 30)) VariousBits1 = 0;
+  }
+
+  void clearNetworkSettings() {
+    for (byte i = 0; i < 4; ++i) {
+      IP[i] = 0;
+      Gateway[i] = 0;
+      Subnet[i] = 0;
+      DNS[i] = 0;
+    }
+  }
+
  void clearAll() {
    PID = 0;
    Version = 0;
    Build = 0;
    IP_Octet = 0;
    Unit = 0;
+    Name[0] = 0;
+    NTPHost[0] = 0;
    Delay = 0;
    Pin_i2c_sda = -1;
    Pin_i2c_scl = -1;
    Pin_status_led = -1;
    Pin_sd_cs = -1;
+    for (byte i = 0; i < 17; ++i) { PinBootStates[i] = 0; }
+    for (byte i = 0; i < 4; ++i) {  Syslog_IP[i] = 0; }
    UDPPort = 0;
    SyslogLevel = 0;
    SerialLogLevel = 0;
@@ -694,13 +743,17 @@ struct SettingsStruct
    Pin_status_led_Inversed = false;
    deepSleepOnFail = false;
    UseValueLogger = false;
+    ArduinoOTAEnable = false;
    DST_Start = 0;
    DST_End = 0;
    UseRTOSMultitasking = false;
    Pin_Reset = -1;
    SyslogFacility = DEFAULT_SYSLOG_FACILITY;
-    StructSize = 0;
+    StructSize = sizeof(SettingsStruct);
    MQTTUseUnitNameAsClientId = 0;
+    Latitude = 0.0;
+    Longitude = 0.0;
+    VariousBits1 = 0;

    for (byte i = 0; i < CONTROLLER_MAX; ++i) {
      Protocol[i] = 0;
@@ -713,6 +766,7 @@ struct SettingsStruct
    for (byte task = 0; task < TASKS_MAX; ++task) {
      clearTask(task);
    }
+    clearNetworkSettings();
  }

  void clearTask(byte task) {
@@ -827,6 +881,7 @@ struct SettingsStruct
  //TODO: document config.dat somewhere here
  float         Latitude;
  float         Longitude;
+  uint32_t      VariousBits1;

  // FIXME @TD-er: As discussed in #1292, the CRC for the settings is now disabled.
  // make sure crc is the last value in the struct
@@ -834,7 +889,10 @@ struct SettingsStruct
 //  uint8_t       ProgmemMd5[16]; // crc of the binary that last saved the struct to file.
 //  uint8_t       md5[16];
 } Settings;
-
+/*
+SettingsStruct* SettingsStruct_ptr = new SettingsStruct;
+SettingsStruct& Settings = *SettingsStruct_ptr;
+*/

 /*********************************************************************************************\
 * ControllerSettingsStruct
@@ -842,7 +900,7 @@ struct SettingsStruct
 struct ControllerSettingsStruct
 {
  ControllerSettingsStruct() : UseDNS(false), Port(0),
-      MinimalTimeBetweenMessages(100), MaxQueueDepth(10), MaxRetry(10), DeleteOldest(false) {
+      MinimalTimeBetweenMessages(100), MaxQueueDepth(10), MaxRetry(10), DeleteOldest(false), ClientTimeout(100) {
    for (byte i = 0; i < 4; ++i) {
      IP[i] = 0;
    }
@@ -866,6 +924,17 @@ struct ControllerSettingsStruct
  unsigned int  MaxQueueDepth;
  unsigned int  MaxRetry;
  boolean       DeleteOldest; // Action to perform when buffer full, delete oldest, or ignore newest.
+  unsigned int  ClientTimeout;
+
+  void validate() {
+    if (Port > 65535) Port = 0;
+    if (MinimalTimeBetweenMessages < 1  ||  MinimalTimeBetweenMessages > CONTROLLER_DELAY_QUEUE_DELAY_MAX)
+      MinimalTimeBetweenMessages = CONTROLLER_DELAY_QUEUE_DELAY_DFLT;
+    if (MaxQueueDepth > CONTROLLER_DELAY_QUEUE_DEPTH_MAX) MaxQueueDepth = CONTROLLER_DELAY_QUEUE_DEPTH_DFLT;
+    if (MaxRetry > CONTROLLER_DELAY_QUEUE_RETRY_MAX) MaxRetry = CONTROLLER_DELAY_QUEUE_RETRY_MAX;
+    if (ClientTimeout < 10 || ClientTimeout > CONTROLLER_CLIENTTIMEOUT_MAX)
+      ClientTimeout = CONTROLLER_CLIENTTIMEOUT_DFLT;
+  }

  IPAddress getIP() const {
    IPAddress host(IP[0], IP[1], IP[2], IP[3]);
@@ -888,6 +957,7 @@ struct ControllerSettingsStruct
    if (!WiFiConnected(10)) {
      return false; // Not connected, so no use in wasting time to connect to a host.
    }
+    delay(1); // Make sure the Watchdog will not trigger a reset.
    if (quick && ipSet()) return true;
    if (UseDNS) {
      if (!updateIPcache()) {
@@ -1362,6 +1432,7 @@ std::map<unsigned long, systemTimerStruct> systemTimers;
 \*********************************************************************************************/
 struct pinStatesStruct
 {
+  pinStatesStruct() : plugin(0), index(0), mode(0), value(0) {}
  byte plugin;
  byte index;
  byte mode;
@@ -1379,18 +1450,20 @@ struct pinStatesStruct
 //max 40 bytes: ( 74 - 64 ) * 4
 struct RTCStruct
 {
+  RTCStruct() : ID1(0), ID2(0), unused1(false), factoryResetCounter(0),
+                deepSleepState(0), bootFailedCount(0), flashDayCounter(0),
+                flashCounter(0), bootCounter(0) {}
  byte ID1;
  byte ID2;
  boolean unused1;
  byte factoryResetCounter;
  byte deepSleepState;
-  byte unused2;
+  byte bootFailedCount;
  byte flashDayCounter;
  unsigned long flashCounter;
  unsigned long bootCounter;
 } RTC;

-
 int deviceCount = -1;
 int protocolCount = -1;
 int notificationCount = -1;
@@ -1406,6 +1479,8 @@ float UserVar[VARS_PER_TASK * TASKS_MAX];
 \*********************************************************************************************/
 struct rulesTimerStatus
 {
+  rulesTimerStatus() : timestamp(0), interval(0), paused(false) {}
+
  unsigned long timestamp;
  unsigned int interval; //interval in milliseconds
  boolean paused;
@@ -1413,14 +1488,15 @@ struct rulesTimerStatus

 msecTimerHandlerStruct msecTimerHandler;

-unsigned long timermqtt_interval;
-unsigned long lastSend;
-unsigned long lastWeb;
+unsigned long timermqtt_interval = 250;
+unsigned long lastSend = 0;
+unsigned long lastWeb = 0;
 byte cmd_within_mainloop = 0;
-unsigned long connectionFailures;
+unsigned long connectionFailures = 0;
 unsigned long wdcounter = 0;
 unsigned long timerAPoff = 0;
 unsigned long timerAwakeFromDeepSleep = 0;
+unsigned long last_system_event_run = 0;

 #if FEATURE_ADC_VCC
 float vcc = -1.0;
@@ -1567,15 +1643,18 @@ String eventBuffer = "";

 uint32_t lowestRAM = 0;
 String lowestRAMfunction = "";
+uint32_t lowestFreeStack = 0;
+String lowestFreeStackfunction = "";
+

 bool shouldReboot=false;
 bool firstLoop=true;

 boolean activeRuleSets[RULESETS_MAX];

-boolean       UseRTOSMultitasking;
+boolean UseRTOSMultitasking = false;

-void (*MainLoopCall_ptr)(void);
+// void (*MainLoopCall_ptr)(void); //FIXME TD-er: No idea what this does.

 /*********************************************************************************************\
 * TimingStats
@@ -106,9 +106,14 @@ int firstEnabledBlynkController() {
 \*********************************************************************************************/
 void setup()
 {
+#ifdef ESP8266_DISABLE_EXTRA4K
+  disable_extra4k_at_link_time();
+#endif
  WiFi.persistent(false); // Do not use SDK storage of SSID/WPA parameters
  WiFi.setAutoReconnect(false);
  setWifiMode(WIFI_OFF);
+  lowestFreeStack = getFreeStackWatermark();
+  lowestRAM = FreeMem();

  Plugin_id.resize(PLUGIN_MAX);
  Task_id_to_Plugin_id.resize(TASKS_MAX);
@@ -119,8 +124,6 @@ void setup()
      ledChannelPin[x] = -1;
  #endif

-  lowestRAM = FreeMem();
-
  Serial.begin(115200);
  // Serial.print("\n\n\nBOOOTTT\n\n\n");

@@ -158,6 +161,7 @@ void setup()
  //warm boot
  if (readFromRTC())
  {
+    RTC.bootFailedCount++;
    RTC.bootCounter++;
    readUserVarFromRTC();

@@ -193,6 +197,16 @@ void setup()
  fileSystemCheck();
  progMemMD5check();
  LoadSettings();
+  if (RTC.bootFailedCount > 10 && RTC.bootCounter > 10) {
+    byte toDisable = RTC.bootFailedCount - 10;
+    toDisable = disablePlugin(toDisable);
+    if (toDisable != 0) {
+      toDisable = disableController(toDisable);
+    }
+    if (toDisable != 0) {
+      toDisable = disableNotification(toDisable);
+    }
+  }

 //  setWifiMode(WIFI_STA);
  checkRuleSets();
@@ -304,9 +318,17 @@ void setup()
    if(UseRTOSMultitasking){
      log = F("RTOS : Launching tasks");
      addLog(LOG_LEVEL_INFO, log);
-      xTaskCreatePinnedToCore(RTOS_TaskServers, "RTOS_TaskServers", 8192, NULL, 1, NULL, 1);
+      xTaskCreatePinnedToCore(RTOS_TaskServers, "RTOS_TaskServers", 16384, NULL, 1, NULL, 1);
      xTaskCreatePinnedToCore(RTOS_TaskSerial, "RTOS_TaskSerial", 8192, NULL, 1, NULL, 1);
      xTaskCreatePinnedToCore(RTOS_Task10ps, "RTOS_Task10ps", 8192, NULL, 1, NULL, 1);
+      xTaskCreatePinnedToCore(
+                    RTOS_HandleSchedule,   /* Function to implement the task */
+                    "RTOS_HandleSchedule", /* Name of the task */
+                    16384,      /* Stack size in words */
+                    NULL,       /* Task input parameter */
+                    1,          /* Priority of the task */
+                    NULL,       /* Task handle. */
+                    1);         /* Core where the task should run */
    }
  #endif

@@ -353,6 +375,14 @@ void RTOS_Task10ps( void * parameter )
    run10TimesPerSecond();
 }
 }
+
+void RTOS_HandleSchedule( void * parameter )
+{
+ while (true){
+    handle_schedule();
+ }
+}
+
 #endif

 int firstEnabledMQTTController() {
@@ -435,8 +465,11 @@ int getLoopCountPerSec() {
 \*********************************************************************************************/
 void loop()
 {
+  /*
+  //FIXME TD-er: No idea what this does.
  if(MainLoopCall_ptr)
      MainLoopCall_ptr();
+  */

  updateLoopStats();

@@ -465,7 +498,10 @@ void loop()
     firstLoop = false;
     timerAwakeFromDeepSleep = millis(); // Allow to run for "awake" number of seconds, now we have wifi.
     // schedule_all_task_device_timers(); Disabled for now, since we are now using queues for controllers.
-   }
+
+     RTC.bootFailedCount = 0;
+     saveToRTC();
+  }

  // Deep sleep mode, just run all tasks one (more) time and go back to sleep as fast as possible
  if ((firstLoopConnectionsEstablished || readyForSleep()) && isDeepSleepEnabled())
@@ -480,7 +516,10 @@ void loop()
  //normal mode, run each task when its time
  else
  {
-    handle_schedule();
+    if (!UseRTOSMultitasking) {
+      // On ESP32 the schedule is executed on the 2nd core.
+      handle_schedule();
+    }
  }

  backgroundtasks();
@@ -831,7 +870,7 @@ void backgroundtasks()
 /*
  // Remove this watchdog feed for now.
  // See https://github.com/letscontrolit/ESPEasy/issues/1722#issuecomment-419659193
-  
+
  #ifdef ESP32
  // Have to find a similar function to call ESP32's esp_task_wdt_feed();
  #else
@@ -113,7 +113,7 @@ void fileSystemCheck()
    {
      ResetFactory();
    }
-    f.close();
+    if (f) f.close();
  }
  else
  {
@@ -147,6 +147,7 @@ String SaveSettings(void)
    // Settings have changed, save to file.
    memcpy(Settings.md5, tmp_md5, 16);
 */
+    Settings.validate();
    err=SaveToFile((char*)FILE_CONFIG, 0, (byte*)&Settings, sizeof(Settings));
    if (err.length())
     return(err);
@@ -182,6 +183,7 @@ String LoadSettings()
  err=LoadFromFile((char*)FILE_CONFIG, 0, (byte*)&Settings, sizeof( SettingsStruct));
  if (err.length())
    return(err);
+  Settings.validate();

    // FIXME @TD-er: As discussed in #1292, the CRC for the settings is now disabled.
 /*
@@ -219,6 +221,51 @@ String LoadSettings()
  return(err);
 }

+/********************************************************************************************\
+  Disable Plugin, based on bootFailedCount
+  \*********************************************************************************************/
+byte disablePlugin(byte bootFailedCount) {
+  for (byte i = 0; i < TASKS_MAX && bootFailedCount > 0; ++i) {
+    if (Settings.TaskDeviceEnabled[i]) {
+      --bootFailedCount;
+      if (bootFailedCount == 0) {
+        Settings.TaskDeviceEnabled[i] = false;
+      }
+    }
+  }
+  return bootFailedCount;
+}
+
+/********************************************************************************************\
+  Disable Controller, based on bootFailedCount
+  \*********************************************************************************************/
+byte disableController(byte bootFailedCount) {
+  for (byte i = 0; i < CONTROLLER_MAX && bootFailedCount > 0; ++i) {
+    if (Settings.ControllerEnabled[i]) {
+      --bootFailedCount;
+      if (bootFailedCount == 0) {
+        Settings.ControllerEnabled[i] = false;
+      }
+    }
+  }
+  return bootFailedCount;
+}
+
+/********************************************************************************************\
+  Disable Notification, based on bootFailedCount
+  \*********************************************************************************************/
+byte disableNotification(byte bootFailedCount) {
+  for (byte i = 0; i < NOTIFICATION_MAX && bootFailedCount > 0; ++i) {
+    if (Settings.NotificationEnabled[i]) {
+      --bootFailedCount;
+      if (bootFailedCount == 0) {
+        Settings.NotificationEnabled[i] = false;
+      }
+    }
+  }
+  return bootFailedCount;
+}
+
 /********************************************************************************************\
  Offsets in settings files
  \*********************************************************************************************/
@@ -388,20 +435,25 @@ String LoadCustomTaskSettings(int TaskIndex, byte* memAddress, int datasize)
 /********************************************************************************************\
  Save Controller settings to SPIFFS
  \*********************************************************************************************/
-String SaveControllerSettings(int ControllerIndex, byte* memAddress, int datasize)
+String SaveControllerSettings(int ControllerIndex, ControllerSettingsStruct& controller_settings)
 {
  checkRAM(F("SaveControllerSettings"));
-  return SaveToFile(ControllerSettings_Type, ControllerIndex, (char*)FILE_CONFIG, memAddress, datasize);
+  controller_settings.validate(); // Make sure the saved controller settings have proper values.
+  return SaveToFile(ControllerSettings_Type, ControllerIndex,
+                    (char*)FILE_CONFIG, (byte*)&controller_settings, sizeof(controller_settings));
 }


 /********************************************************************************************\
  Load Controller settings to SPIFFS
  \*********************************************************************************************/
-String LoadControllerSettings(int ControllerIndex, byte* memAddress, int datasize)
-{
+String LoadControllerSettings(int ControllerIndex, ControllerSettingsStruct& controller_settings) {
  checkRAM(F("LoadControllerSettings"));
-  return(LoadFromFile(ControllerSettings_Type, ControllerIndex, (char*)FILE_CONFIG, memAddress, datasize));
+  String result =
+    LoadFromFile(ControllerSettings_Type, ControllerIndex,
+                 (char*)FILE_CONFIG, (byte*)&controller_settings, sizeof(controller_settings));
+  controller_settings.validate(); // Make sure the loaded controller settings have proper values.
+  return result;
 }


@@ -466,13 +518,15 @@ String InitFile(const char* fname, int datasize)
  FLASH_GUARD();

  fs::File f = SPIFFS.open(fname, "w");
-  SPIFFS_CHECK(f, fname);
+  if (f) {
+    SPIFFS_CHECK(f, fname);

-  for (int x = 0; x < datasize ; x++)
-  {
-    SPIFFS_CHECK(f.write(0), fname);
+    for (int x = 0; x < datasize ; x++)
+    {
+      SPIFFS_CHECK(f.write(0), fname);
+    }
+    f.close();
  }
-  f.close();

  //OK
  return String();
@@ -483,6 +537,15 @@ String InitFile(const char* fname, int datasize)
  \*********************************************************************************************/
 String SaveToFile(char* fname, int index, byte* memAddress, int datasize)
 {
+#ifndef ESP32
+  if (allocatedOnStack(memAddress)) {
+    String log = F("SaveToFile: ");
+    log += fname;
+    log += F(" ERROR, Data allocated on stack");
+    addLog(LOG_LEVEL_ERROR, log);
+//    return log;  // FIXME TD-er: Should this be considered a breaking error?
+  }
+#endif
  if (index < 0) {
    String log = F("SaveToFile: ");
    log += fname;
@@ -495,19 +558,27 @@ String SaveToFile(char* fname, int index, byte* memAddress, int datasize)
  FLASH_GUARD();

  fs::File f = SPIFFS.open(fname, "r+");
-  SPIFFS_CHECK(f, fname);
+  if (f) {
+    SPIFFS_CHECK(f, fname);

-  SPIFFS_CHECK(f.seek(index, fs::SeekSet), fname);
-  byte *pointerToByteToSave = memAddress;
-  for (int x = 0; x < datasize ; x++)
-  {
-    SPIFFS_CHECK(f.write(*pointerToByteToSave), fname);
-    pointerToByteToSave++;
+    SPIFFS_CHECK(f.seek(index, fs::SeekSet), fname);
+    byte *pointerToByteToSave = memAddress;
+    for (int x = 0; x < datasize ; x++)
+    {
+      SPIFFS_CHECK(f.write(*pointerToByteToSave), fname);
+      pointerToByteToSave++;
+    }
+    f.close();
+    String log = F("FILE : Saved ");
+    log=log+fname;
+    addLog(LOG_LEVEL_INFO, log);
+  } else {
+    String log = F("SaveToFile: ");
+    log += fname;
+    log += F(" ERROR, Cannot save to file");
+    addLog(LOG_LEVEL_ERROR, log);
+    return log;
  }
-  f.close();
-  String log = F("FILE : Saved ");
-  log=log+fname;
-  addLog(LOG_LEVEL_INFO, log);

  //OK
  return String();
@@ -530,14 +601,22 @@ String ClearInFile(char* fname, int index, int datasize)
  FLASH_GUARD();

  fs::File f = SPIFFS.open(fname, "r+");
-  SPIFFS_CHECK(f, fname);
+  if (f) {
+    SPIFFS_CHECK(f, fname);

-  SPIFFS_CHECK(f.seek(index, fs::SeekSet), fname);
-  for (int x = 0; x < datasize ; x++)
-  {
-    SPIFFS_CHECK(f.write(0), fname);
+    SPIFFS_CHECK(f.seek(index, fs::SeekSet), fname);
+    for (int x = 0; x < datasize ; x++)
+    {
+      SPIFFS_CHECK(f.write(0), fname);
+    }
+    f.close();
+  } else {
+    String log = F("ClearInFile: ");
+    log += fname;
+    log += F(" ERROR, Cannot save to file");
+    addLog(LOG_LEVEL_ERROR, log);
+    return log;
  }
-  f.close();

  //OK
  return String();
@@ -418,8 +418,10 @@ void setWifiMode(WiFiMode_t wifimode) {
 String WifiGetAPssid()
 {
  String ssid(Settings.Name);
-  ssid+=F("_");
-  ssid+=Settings.Unit;
+  if (Settings.appendUnitToHostname()) {
+    ssid+=F("_");
+    ssid+=Settings.Unit;
+  }
  return (ssid);
 }

@@ -676,6 +678,7 @@ void WifiScan()

 String formatScanResult(int i, const String& separator) {
  String result = WiFi.SSID(i);
+  htmlEscape(result);
  #ifndef ESP32
  if (WiFi.isHidden(i)) {
    result += F("#Hidden#");
@@ -11,6 +11,12 @@ bool I2C_read_words(uint8_t i2caddr, I2Cdata_words& data) {
  return size == i2cdev.readWords(i2caddr, data.getRegister(), size, data.get());
 }

+// See https://github.com/platformio/platform-espressif32/issues/126
+#ifdef ESP32
+  #define END_TRANSMISSION_FLAG true
+#else
+  #define END_TRANSMISSION_FLAG false
+#endif

 //**************************************************************************/
 // Wake up I2C device
@@ -66,7 +72,7 @@ uint8_t I2C_read8_reg(uint8_t i2caddr, byte reg, bool * is_ok) {

  Wire.beginTransmission(i2caddr);
  Wire.write((uint8_t)reg);
-  Wire.endTransmission(false);
+  Wire.endTransmission(END_TRANSMISSION_FLAG);
  byte count = Wire.requestFrom(i2caddr, (byte)1);
  if (is_ok != NULL) {
    *is_ok = (count == 1);
@@ -84,7 +90,7 @@ uint16_t I2C_read16_reg(uint8_t i2caddr, byte reg) {

  Wire.beginTransmission(i2caddr);
  Wire.write((uint8_t)reg);
-  Wire.endTransmission(false);
+  Wire.endTransmission(END_TRANSMISSION_FLAG);
  Wire.requestFrom(i2caddr, (byte)2);
  value = (Wire.read() << 8) | Wire.read();

@@ -99,7 +105,7 @@ int32_t I2C_read24_reg(uint8_t i2caddr, byte reg) {

  Wire.beginTransmission(i2caddr);
  Wire.write((uint8_t)reg);
-  Wire.endTransmission(false);
+  Wire.endTransmission(END_TRANSMISSION_FLAG);
  Wire.requestFrom(i2caddr, (byte)3);
  value = (((int32_t)Wire.read()) << 16) | (Wire.read() << 8) | Wire.read();

@@ -114,7 +120,7 @@ int32_t I2C_read32_reg(uint8_t i2caddr, byte reg) {

  Wire.beginTransmission(i2caddr);
  Wire.write((uint8_t)reg);
-  Wire.endTransmission(false);
+  Wire.endTransmission(END_TRANSMISSION_FLAG);
  Wire.requestFrom(i2caddr, (byte)3);
  value = (((int32_t)Wire.read()) <<24) | (((uint32_t)Wire.read()) << 16) | (Wire.read() << 8) | Wire.read();

@@ -139,3 +145,5 @@ int16_t I2C_readS16_reg(uint8_t i2caddr, byte reg) {
 int16_t I2C_readS16_LE_reg(uint8_t i2caddr, byte reg) {
  return (int16_t)I2C_read16_LE_reg(i2caddr, reg);
 }
+
+#undef END_TRANSMISSION_FLAG
@@ -41,19 +41,26 @@ unsigned long getMixedId(unsigned long timerType, unsigned long id) {
 \*********************************************************************************************/
 void handle_schedule() {
  unsigned long timer;
-  const unsigned long mixed_id = msecTimerHandler.getNextId(timer);
+  unsigned long mixed_id = 0;
+  if (timePassedSince(last_system_event_run) < 500) {
+    // Make sure system event queue will be looked at every now and then.
+    mixed_id = msecTimerHandler.getNextId(timer);
+  }
  if (mixed_id == 0) {
    // No id ready to run right now.
    // Events are not that important to run immediately.
    // Make sure normal scheduled jobs run at higher priority.
    backgroundtasks();
    process_system_event_queue();
+    last_system_event_run = millis();
    return;
  }
  const unsigned long timerType = (mixed_id >> TIMER_ID_SHIFT);
  const unsigned long mask = (1 << TIMER_ID_SHIFT) -1;
  const unsigned long id = mixed_id & mask;

+  yield(); // See: https://github.com/letscontrolit/ESPEasy/issues/1818#issuecomment-425351328
+
  switch (timerType) {
    case CONST_INTERVAL_TIMER:
      process_interval_timer(id, timer);
@@ -373,8 +373,31 @@ void htmlEscape(String & html)
  html.replace("'",  F("&#039;"));
  html.replace("<",  F("&lt;"));
  html.replace(">",  F("&gt;"));
+  html.replace("/", F("&#047;"));
 }

+void htmlStrongEscape(String & html)
+{
+  String escaped;
+  for (unsigned i = 0; i < html.length(); ++i)
+  {
+    if ((html[i] >= 'a' && html[i] <= 'z') || (html[i] >= 'A' && html[i] <= 'Z') || (html[i] >= '0' && html[i] <= '9'))
+    {
+      escaped += html[i];
+    }
+    else
+    {
+      char s [4];
+      sprintf(s, "%03d", static_cast<int>(html[i]));
+      escaped += "&#";
+      escaped += s;
+      escaped += ";";
+    }
+  }
+  html = escaped;
+}
+
+
 /********************************************************************************************\
  replace other system variables like %sysname%, %systime%, %ip%
  \*********************************************************************************************/
@@ -61,8 +61,8 @@ void calcSunRiseAndSet() {
 	float eqt = equationOfTime(doy);
 	float dec = sunDeclination(doy);
 	float da = diurnalArc(dec, Settings.Latitude);
-	float rise = 12 - da - eqt - Settings.Longitude / 15.0;
-	float set = 12 + da - eqt - Settings.Longitude / 15.0;
+	float rise = 12 - da - eqt;
+	float set = 12 + da - eqt;
  tsRise.Hour = (int)rise;
  tsRise.Minute = (rise - (int)rise) * 60.0;
  tsSet.Hour = (int)set;
@@ -70,6 +70,10 @@ void calcSunRiseAndSet() {
  tsRise.Day = tsSet.Day = tm.Day;
  tsRise.Month = tsSet.Month = tm.Month;
  tsRise.Year = tsSet.Year = tm.Year;
+  // Now apply the longitude
+	int secOffset_longitude = -1.0 * (Settings.Longitude / 15.0) * 3600;
+	tsSet = addSeconds(tsSet, secOffset_longitude, false);
+	tsRise = addSeconds(tsRise, secOffset_longitude, false);
  breakTime(toLocal(makeTime(tsRise)), sunRise);
  breakTime(toLocal(makeTime(tsSet)), sunSet);
 }
@@ -875,6 +875,13 @@ void handle_root() {
    TXBuffer += F(" - ");
    TXBuffer += String(lowestRAMfunction);
    TXBuffer += F(")");
+    html_TR_TD(); TXBuffer += F("Free Stack:<TD>");
+    TXBuffer += String(getCurrentFreeStack());
+    TXBuffer += F(" (");
+    TXBuffer += String(lowestFreeStack);
+    TXBuffer += F(" - ");
+    TXBuffer += String(lowestFreeStackfunction);
+    TXBuffer += F(")");

    html_TR_TD(); TXBuffer += F("IP:<TD>");
    TXBuffer += formatIP(ip);
@@ -1033,6 +1040,7 @@ void handle_config() {
      MQTTclient_should_reconnect = true;
    }
    strncpy(Settings.Name, name.c_str(), sizeof(Settings.Name));
+    Settings.appendUnitToHostname(isFormItemChecked(F("appendunittohostname")));
    //strncpy(SecuritySettings.Password, password.c_str(), sizeof(SecuritySettings.Password));
    copyFormPassword(F("password"), SecuritySettings.Password, sizeof(SecuritySettings.Password));
    strncpy(SecuritySettings.WifiSSID, ssid.c_str(), sizeof(SecuritySettings.WifiSSID));
@@ -1082,7 +1090,8 @@ void handle_config() {
  Settings.Name[25] = 0;
  SecuritySettings.Password[25] = 0;
  addFormTextBox( F("Unit Name"), F("name"), Settings.Name, 25);
-  addFormNumericBox( F("Unit Number"), F("unit"), Settings.Unit, 0, 9999);
+  addFormNumericBox( F("Unit Number"), F("unit"), Settings.Unit, 0, UNIT_NUMBER_MAX);
+  addFormCheckBox(F("Append Unit Number to hostname"), F("appendunittohostname"), Settings.appendUnitToHostname());
  addFormPasswordBox(F("Admin Password"), F("password"), SecuritySettings.Password, 25);

  addFormSubHeader(F("Wifi Settings"));
@@ -1174,6 +1183,7 @@ void handle_controllers() {
  const int maxqueuedepth = getFormItemInt(F("maxqueuedepth"), 10);
  const int maxretry = getFormItemInt(F("maxretry"), 10);
  String deleteoldest = WebServer.arg(F("deleteoldest"));
+  const int clienttimeout = getFormItemInt(F("clienttimeout"), CONTROLLER_CLIENTTIMEOUT_DFLT);


  //submitted data
@@ -1192,7 +1202,8 @@ void handle_controllers() {
        //reset (some) default-settings
        byte ProtocolIndex = getProtocolIndex(Settings.Protocol[controllerindex]);
        ControllerSettings.Port = Protocol[ProtocolIndex].defaultPort;
-        ControllerSettings.MinimalTimeBetweenMessages = 100;
+        ControllerSettings.MinimalTimeBetweenMessages = CONTROLLER_DELAY_QUEUE_DELAY_DFLT;
+        ControllerSettings.ClientTimeout = CONTROLLER_CLIENTTIMEOUT_DFLT;
 //        ControllerSettings.MaxQueueDepth = 0;
        if (Protocol[ProtocolIndex].usesTemplate)
          CPlugin_ptr[ProtocolIndex](CPLUGIN_PROTOCOL_TEMPLATE, &TempEvent, dummyString);
@@ -1257,12 +1268,13 @@ void handle_controllers() {
        ControllerSettings.MaxQueueDepth = maxqueuedepth;
        ControllerSettings.MaxRetry = maxretry;
        ControllerSettings.DeleteOldest = deleteoldest.toInt();
+        ControllerSettings.ClientTimeout = clienttimeout;


        CPlugin_ptr[ProtocolIndex](CPLUGIN_INIT, &TempEvent, dummyString);
      }
    }
-    addHtmlError(SaveControllerSettings(controllerindex, (byte*)&ControllerSettings, sizeof(ControllerSettings)));
+    addHtmlError(SaveControllerSettings(controllerindex, ControllerSettings));
    addHtmlError(SaveSettings());
  }

@@ -1276,7 +1288,7 @@ void handle_controllers() {
    ControllerSettingsStruct ControllerSettings;
    for (byte x = 0; x < CONTROLLER_MAX; x++)
    {
-      LoadControllerSettings(x, (byte*)&ControllerSettings, sizeof(ControllerSettings));
+      LoadControllerSettings(x, ControllerSettings);
      html_TR_TD();
      TXBuffer += F("<a class='button link' href=\"controllers?index=");
      TXBuffer += x + 1;
@@ -1332,7 +1344,7 @@ void handle_controllers() {
    if (Settings.Protocol[controllerindex])
    {
      ControllerSettingsStruct ControllerSettings;
-      LoadControllerSettings(controllerindex, (byte*)&ControllerSettings, sizeof(ControllerSettings));
+      LoadControllerSettings(controllerindex, ControllerSettings);
      byte choice = ControllerSettings.UseDNS;
      String options[2];
      options[0] = F("Use IP address");
@@ -1364,6 +1376,8 @@ void handle_controllers() {
        addFormNumericBox( F("Max Queue Depth"), F("maxqueuedepth"), ControllerSettings.MaxQueueDepth, 1, CONTROLLER_DELAY_QUEUE_DEPTH_MAX);
        addFormNumericBox( F("Max Retries"), F("maxretry"), ControllerSettings.MaxRetry, 1, CONTROLLER_DELAY_QUEUE_RETRY_MAX);
        addFormSelector(F("Full Queue Action"), F("deleteoldest"), 2, options_delete_oldest, NULL, NULL, choice_delete_oldest, true);
+        addFormNumericBox( F("Client Timeout"), F("clienttimeout"), ControllerSettings.ClientTimeout, 10, CONTROLLER_CLIENTTIMEOUT_MAX);
+        addUnit(F("ms"));


        if (Protocol[ProtocolIndex].usesAccount)
@@ -2283,7 +2297,7 @@ void handle_devices() {
              html_TR_TD(); TXBuffer += F("IDX:<TD>");
              id = F("TDID");   //="taskdeviceid"
              id += controllerNr + 1;
-              addNumericBox(id, Settings.TaskDeviceID[controllerNr][taskIndex], 0, 999999999); // Looks like it is an unsigned int, so could be up to 4 bln.
+              addNumericBox(id, Settings.TaskDeviceID[controllerNr][taskIndex], 0, DOMOTICZ_MAX_IDX);
            }
          }
        }
@@ -2598,8 +2612,8 @@ void addPinSelect(boolean forI2C, String name,  int choice)
 //********************************************************************************
 void addPinSelect(boolean forI2C, String name,  int choice)
 {
-  String options[PIN_D_MAX+1];
-  int optionValues[PIN_D_MAX+1];
+  String * options = new String[PIN_D_MAX+1];
+  int * optionValues = new int[PIN_D_MAX+1];
  options[0] = F("- None -");
  optionValues[0] = -1;
  for(byte x=1; x < PIN_D_MAX+1; x++)
@@ -2609,6 +2623,8 @@ void addPinSelect(boolean forI2C, String name,  int choice)
    optionValues[x] = x;
  }
  renderHTMLForPinSelect(options, optionValues, forI2C, name, choice, PIN_D_MAX+1);
+  delete[] optionValues;
+  delete[] options;
 }
 #endif

@@ -3649,6 +3665,7 @@ void handle_control() {
  }
  else if (command.equalsIgnoreCase(F("taskrun")) ||
           command.equalsIgnoreCase(F("taskvalueset")) ||
+           command.equalsIgnoreCase(F("taskvaluetoggle")) ||
           command.equalsIgnoreCase(F("rules"))) {
    addLog(LOG_LEVEL_INFO,String(F("HTTP : ")) + webrequest);
    ExecuteCommand(VALUE_SOURCE_HTTP,webrequest.c_str());
@@ -4190,6 +4207,7 @@ void handle_download()

  WebServer.sendHeader(F("Content-Disposition"), str);
  WebServer.streamFile(dataFile, F("application/octet-stream"));
+  dataFile.close();
 }


@@ -4569,18 +4587,40 @@ void handle_filelist() {
    checkRuleSets();
  }

+  const int pageSize = 25;
+  int startIdx = 0;

+  String fstart = WebServer.arg(F("start"));
+  if (fstart.length() > 0)
+  {
+    startIdx = atoi(fstart.c_str());
+  }
+  int endIdx = startIdx + pageSize - 1;

  TXBuffer += F("<table class='multirow' border=1px frame='box' rules='all'><TH style='width:50px;'><TH>Filename<TH style='width:80px;'>Size");

  fs::Dir dir = SPIFFS.openDir("");
+
+  int count = -1;
  while (dir.next())
  {
+    ++count;
+
+    if (count < startIdx)
+    {
+      continue;
+    }
+
    html_TR_TD();
    if (dir.fileName() != F(FILE_CONFIG) && dir.fileName() != F(FILE_SECURITY) && dir.fileName() != F(FILE_NOTIFICATION))
    {
      TXBuffer += F("<a class='button link' href=\"filelist?delete=");
      TXBuffer += dir.fileName();
+      if (startIdx > 0)
+      {
+        TXBuffer += F("&start=");
+        TXBuffer += startIdx;
+      }
      TXBuffer += F("\">Del</a>");
    }

@@ -4591,12 +4631,32 @@ void handle_filelist() {
    TXBuffer += F("</a>");
    fs::File f = dir.openFile("r");
    html_TD();
-    TXBuffer += f.size();
+    if (f) {
+      TXBuffer += f.size();
+      f.close();
+    }
+    if (count >= endIdx)
+    {
+      break;
+    }
  }
  TXBuffer += F("</table></form>");
-  TXBuffer += F("<BR><a class='button link' href=\"/upload\">Upload</a><BR><BR>");
-    sendHeadandTail(F("TmplStd"),true);
-    TXBuffer.endStream();
+  TXBuffer += F("<BR><a class='button link' href=\"/upload\">Upload</a>");
+  if (startIdx > 0)
+  {
+    TXBuffer += F("<a class='button link' href=\"/filelist?start=");
+    TXBuffer += max(0, startIdx - pageSize);
+    TXBuffer += F("\">Previous</a>");
+  }
+  if (count >= endIdx and dir.next())
+  {
+    TXBuffer += F("<a class='button link' href=\"/filelist?start=");
+    TXBuffer += endIdx + 1;
+    TXBuffer += F("\">Next</a>");
+  }
+  TXBuffer += F("<BR><BR>");
+  sendHeadandTail(F("TmplStd"),true);
+  TXBuffer.endStream();
 #endif
 #if defined(ESP32)
  String fdelete = WebServer.arg(F("delete"));
@@ -4607,35 +4667,67 @@ void handle_filelist() {
    // flashCount();
  }

+  const int pageSize = 25;
+  int startIdx = 0;

+  String fstart = WebServer.arg(F("start"));
+  if (fstart.length() > 0)
+  {
+    startIdx = atoi(fstart.c_str());
+  }
+  int endIdx = startIdx + pageSize - 1;

  TXBuffer += F("<table class='multirow' border=1px frame='box' rules='all'><TH><TH>Filename<TH>Size");

  File root = SPIFFS.open("/");
  File file = root.openNextFile();
-  while (file)
+  int count = -1;
+  while (file and count < endIdx)
  {
    if(!file.isDirectory()){
-      html_TR_TD();
-      if (strcmp(file.name(), FILE_CONFIG) != 0 && strcmp(file.name(), FILE_SECURITY) != 0 && strcmp(file.name(), FILE_NOTIFICATION) != 0)
-      {
-        TXBuffer += F("<a class='button link' href=\"filelist?delete=");
-        TXBuffer += file.name();
-        TXBuffer += F("\">Del</a>");
-      }
+      ++count;

-      TXBuffer += F("<TD><a href=\"");
-      TXBuffer += file.name();
-      TXBuffer += F("\">");
-      TXBuffer += file.name();
-      TXBuffer += F("</a>");
-      html_TD();
-      TXBuffer += file.size();
-      file = root.openNextFile();
+      if (count >= startIdx)
+      {
+        html_TR_TD();
+        if (strcmp(file.name(), FILE_CONFIG) != 0 && strcmp(file.name(), FILE_SECURITY) != 0 && strcmp(file.name(), FILE_NOTIFICATION) != 0)
+        {
+          TXBuffer += F("<a class='button link' href=\"filelist?delete=");
+          TXBuffer += file.name();
+          if (startIdx > 0)
+          {
+            TXBuffer += F("&start=");
+            TXBuffer += startIdx;
+          }
+          TXBuffer += F("\">Del</a>");
+        }
+
+        TXBuffer += F("<TD><a href=\"");
+        TXBuffer += file.name();
+        TXBuffer += F("\">");
+        TXBuffer += file.name();
+        TXBuffer += F("</a>");
+        html_TD();
+        TXBuffer += file.size();
+      }
    }
+    file = root.openNextFile();
  }
  TXBuffer += F("</table></form>");
-  TXBuffer += F("<BR><a class='button link' href=\"/upload\">Upload</a><BR><BR>");
+  TXBuffer += F("<BR><a class='button link' href=\"/upload\">Upload</a>");
+  if (startIdx > 0)
+  {
+    TXBuffer += F("<a class='button link' href=\"/filelist?start=");
+    TXBuffer += startIdx < pageSize ? 0 : startIdx - pageSize;
+    TXBuffer += F("\">Previous</a>");
+  }
+  if (count >= endIdx and file)
+  {
+    TXBuffer += F("<a class='button link' href=\"/filelist?start=");
+    TXBuffer += endIdx + 1;
+    TXBuffer += F("\">Next</a>");
+  }
+  TXBuffer += F("<BR><BR>");
    sendHeadandTail(F("TmplStd"),true);
    TXBuffer.endStream();
 #endif
@@ -4900,7 +4992,11 @@ void handle_setup() {
      {
        html_TR_TD(); TXBuffer += F("<label class='container2'>");
        TXBuffer += F("<input type='radio' name='ssid' value='");
-        TXBuffer += WiFi.SSID(i);
+        {
+          String escapeBuffer = WiFi.SSID(i);
+          htmlStrongEscape(escapeBuffer);
+          TXBuffer += escapeBuffer;
+        }
        TXBuffer += F("'");
        if (WiFi.SSID(i) == ssid)
          TXBuffer += F(" checked ");
@@ -5039,7 +5135,7 @@ void handle_rules() {
        log += F(" Create new file: ");
        log += fileName;
        fs::File f = SPIFFS.open(fileName, "w");
-        f.close();
+        if (f) f.close();
      }
    }
    addLog(LOG_LEVEL_INFO, log);
@@ -5175,6 +5271,13 @@ void handle_sysinfo() {
   TXBuffer += F(" - ");
   TXBuffer += lowestRAMfunction;
   TXBuffer += F(")");
+   html_TR_TD(); TXBuffer += F("Free Stack<TD>");
+   TXBuffer += getCurrentFreeStack();
+   TXBuffer += F(" (");
+   TXBuffer += lowestFreeStack;
+   TXBuffer += F(" - ");
+   TXBuffer += lowestFreeStackfunction;
+   TXBuffer += F(")");

   html_TR_TD(); TXBuffer += F("Boot<TD>");
   TXBuffer += getLastBootCauseString();
@@ -5342,6 +5445,8 @@ void handle_sysinfo() {
     TXBuffer += ESP.getCpuFreqMHz();
     TXBuffer += F(" MHz");
  #endif
+  html_TR_TD(); TXBuffer += F("ESP Board Name:<TD>");
+  TXBuffer += ARDUINO_BOARD;


   addTableSeparator(F("Storage"), 2, 3);
@@ -34,7 +34,7 @@ boolean CPlugin_001(byte function, struct EventStruct *event, String& string)
    case CPLUGIN_INIT:
      {
        ControllerSettingsStruct ControllerSettings;
-        LoadControllerSettings(event->ControllerIndex, (byte*)&ControllerSettings, sizeof(ControllerSettings));
+        LoadControllerSettings(event->ControllerIndex, ControllerSettings);
        C001_DelayHandler.configureControllerSettings(ControllerSettings);
        break;
      }
@@ -36,7 +36,7 @@ boolean CPlugin_002(byte function, struct EventStruct *event, String& string)
    case CPLUGIN_INIT:
      {
        ControllerSettingsStruct ControllerSettings;
-        LoadControllerSettings(event->ControllerIndex, (byte*)&ControllerSettings, sizeof(ControllerSettings));
+        LoadControllerSettings(event->ControllerIndex, ControllerSettings);
        MQTTDelayHandler.configureControllerSettings(ControllerSettings);
        break;
      }
@@ -146,7 +146,7 @@ boolean CPlugin_002(byte function, struct EventStruct *event, String& string)
        if (event->idx != 0)
        {
          ControllerSettingsStruct ControllerSettings;
-          LoadControllerSettings(event->ControllerIndex, (byte*)&ControllerSettings, sizeof(ControllerSettings));
+          LoadControllerSettings(event->ControllerIndex, ControllerSettings);
 /*
          if (!ControllerSettings.checkHostReachable(true)) {
            success = false;
@@ -33,7 +33,7 @@ boolean CPlugin_003(byte function, struct EventStruct *event, String& string)
    case CPLUGIN_INIT:
      {
        ControllerSettingsStruct ControllerSettings;
-        LoadControllerSettings(event->ControllerIndex, (byte*)&ControllerSettings, sizeof(ControllerSettings));
+        LoadControllerSettings(event->ControllerIndex, ControllerSettings);
        C003_DelayHandler.configureControllerSettings(ControllerSettings);
        break;
      }
@@ -33,7 +33,7 @@ boolean CPlugin_004(byte function, struct EventStruct *event, String& string)
    case CPLUGIN_INIT:
      {
        ControllerSettingsStruct ControllerSettings;
-        LoadControllerSettings(event->ControllerIndex, (byte*)&ControllerSettings, sizeof(ControllerSettings));
+        LoadControllerSettings(event->ControllerIndex, ControllerSettings);
        C004_DelayHandler.configureControllerSettings(ControllerSettings);
        break;
      }
@@ -34,7 +34,7 @@ boolean CPlugin_005(byte function, struct EventStruct *event, String& string)
    case CPLUGIN_INIT:
      {
        ControllerSettingsStruct ControllerSettings;
-        LoadControllerSettings(event->ControllerIndex, (byte*)&ControllerSettings, sizeof(ControllerSettings));
+        LoadControllerSettings(event->ControllerIndex, ControllerSettings);
        MQTTDelayHandler.configureControllerSettings(ControllerSettings);
        break;
      }
@@ -93,7 +93,7 @@ boolean CPlugin_005(byte function, struct EventStruct *event, String& string)
    case CPLUGIN_PROTOCOL_SEND:
      {
        ControllerSettingsStruct ControllerSettings;
-        LoadControllerSettings(event->ControllerIndex, (byte*)&ControllerSettings, sizeof(ControllerSettings));
+        LoadControllerSettings(event->ControllerIndex, ControllerSettings);
        if (!ControllerSettings.checkHostReachable(true)) {
            success = false;
            break;
@@ -34,7 +34,7 @@ boolean CPlugin_006(byte function, struct EventStruct *event, String& string)
    case CPLUGIN_INIT:
      {
        ControllerSettingsStruct ControllerSettings;
-        LoadControllerSettings(event->ControllerIndex, (byte*)&ControllerSettings, sizeof(ControllerSettings));
+        LoadControllerSettings(event->ControllerIndex, ControllerSettings);
        MQTTDelayHandler.configureControllerSettings(ControllerSettings);
        break;
      }
@@ -91,7 +91,7 @@ boolean CPlugin_006(byte function, struct EventStruct *event, String& string)
          break;
        }
        ControllerSettingsStruct ControllerSettings;
-        LoadControllerSettings(event->ControllerIndex, (byte*)&ControllerSettings, sizeof(ControllerSettings));
+        LoadControllerSettings(event->ControllerIndex, ControllerSettings);

        statusLED(true);

@@ -33,7 +33,7 @@ boolean CPlugin_007(byte function, struct EventStruct *event, String& string)
    case CPLUGIN_INIT:
      {
        ControllerSettingsStruct ControllerSettings;
-        LoadControllerSettings(event->ControllerIndex, (byte*)&ControllerSettings, sizeof(ControllerSettings));
+        LoadControllerSettings(event->ControllerIndex, ControllerSettings);
        C007_DelayHandler.configureControllerSettings(ControllerSettings);
        break;
      }
@@ -35,7 +35,7 @@ boolean CPlugin_008(byte function, struct EventStruct *event, String& string)
    case CPLUGIN_INIT:
      {
        ControllerSettingsStruct ControllerSettings;
-        LoadControllerSettings(event->ControllerIndex, (byte*)&ControllerSettings, sizeof(ControllerSettings));
+        LoadControllerSettings(event->ControllerIndex, ControllerSettings);
        C008_DelayHandler.configureControllerSettings(ControllerSettings);
        break;
      }
@@ -56,7 +56,7 @@ boolean CPlugin_008(byte function, struct EventStruct *event, String& string)
          PluginCall(PLUGIN_GET_DEVICEVALUENAMES, event, dummyString);

        ControllerSettingsStruct ControllerSettings;
-        LoadControllerSettings(event->ControllerIndex, (byte*)&ControllerSettings, sizeof(ControllerSettings));
+        LoadControllerSettings(event->ControllerIndex, ControllerSettings);

        for (byte x = 0; x < valueCount; x++)
        {
@@ -24,7 +24,7 @@
 - removed obsolete http get url code
 - v1.04
 - added build options and node_type_id to JSON/device
- /******************************************************************************/
+ ******************************************************************************/

 #define CPLUGIN_009
 #define CPLUGIN_ID_009         9
@@ -46,7 +46,7 @@ boolean CPlugin_010(byte function, struct EventStruct *event, String& string)
          PluginCall(PLUGIN_GET_DEVICEVALUENAMES, event, dummyString);

        ControllerSettingsStruct ControllerSettings;
-        LoadControllerSettings(event->ControllerIndex, (byte*)&ControllerSettings, sizeof(ControllerSettings));
+        LoadControllerSettings(event->ControllerIndex, ControllerSettings);

        for (byte x = 0; x < valueCount; x++)
        {
@@ -148,7 +148,7 @@ boolean Create_schedule_HTTP_C011(struct EventStruct *event)
    return false;
  }
  ControllerSettingsStruct ControllerSettings;
-  LoadControllerSettings(event->ControllerIndex, (byte*)&ControllerSettings, sizeof(ControllerSettings));
+  LoadControllerSettings(event->ControllerIndex, ControllerSettings);

  C011_ConfigStruct customConfig;
  LoadCustomControllerSettings(event->ControllerIndex,(byte*)&customConfig, sizeof(customConfig));
@@ -41,7 +41,7 @@ boolean CPlugin_012(byte function, struct EventStruct *event, String& string)
          PluginCall(PLUGIN_GET_DEVICEVALUENAMES, event, dummyString);

        ControllerSettingsStruct ControllerSettings;
-        LoadControllerSettings(event->ControllerIndex, (byte*)&ControllerSettings, sizeof(ControllerSettings));
+        LoadControllerSettings(event->ControllerIndex, ControllerSettings);

        for (byte x = 0; x < valueCount; x++)
        {
@@ -83,7 +83,7 @@ boolean Blynk_get(const String& command, byte controllerIndex, float *data )
  }

  ControllerSettingsStruct ControllerSettings;
-  LoadControllerSettings(controllerIndex, (byte*)&ControllerSettings, sizeof(ControllerSettings));
+  LoadControllerSettings(controllerIndex, ControllerSettings);

  if ((SecuritySettings.ControllerPassword[controllerIndex][0] == 0)) {
    addLog(LOG_LEVEL_ERROR, F("Blynk : No password set"));
@@ -324,7 +324,7 @@ ControllerDelayHandlerStruct<MQTT_queue_element> MQTTDelayHandler;
                  C##NNN##_queue_element element; \
                  if (!C##NNN##_DelayHandler.getNext(element)) return; \
                  ControllerSettingsStruct ControllerSettings; \
-                  LoadControllerSettings(element.controller_idx, (byte*)&ControllerSettings, sizeof(ControllerSettings)); \
+                  LoadControllerSettings(element.controller_idx, ControllerSettings); \
                  C##NNN##_DelayHandler.configureControllerSettings(ControllerSettings); \
                  if (!WiFiConnected(100)) { \
                    scheduleNextDelayQueue(TIMER_C##NNN##_DELAY_QUEUE, C##NNN##_DelayHandler.getNextScheduleTime()); \
@@ -382,7 +382,7 @@ bool safeReadStringUntil(Stream &input, String &str, char terminator, unsigned i
 	int c;
  const unsigned long start = millis();
 	const unsigned long timer = start + timeout;
-  unsigned long backgroundtasks_timer = start + 100;
+  unsigned long backgroundtasks_timer = start + 10;
 	str = "";

 	do {
@@ -405,7 +405,7 @@ bool safeReadStringUntil(Stream &input, String &str, char terminator, unsigned i
 		}
    // We must run the backgroundtasks every now and then.
    if (timeOutReached(backgroundtasks_timer)) {
-      backgroundtasks_timer += 100;
+      backgroundtasks_timer += 10;
      backgroundtasks();
    } else {
      yield();
@@ -584,6 +584,7 @@ bool count_connection_results(bool success, const String& prefix, int controller
 }

 bool try_connect_host(int controller_number, WiFiUDP& client, ControllerSettingsStruct& ControllerSettings) {
+  client.setTimeout(ControllerSettings.ClientTimeout);
  log_connecting_to(F("UDP  : "), controller_number, ControllerSettings);
  bool success = ControllerSettings.beginPacket(client) != 0;
  return count_connection_results(
@@ -593,6 +594,7 @@ bool try_connect_host(int controller_number, WiFiUDP& client, ControllerSettings

 bool try_connect_host(int controller_number, WiFiClient& client, ControllerSettingsStruct& ControllerSettings) {
  // Use WiFiClient class to create TCP connections
+  client.setTimeout(ControllerSettings.ClientTimeout);
  log_connecting_to(F("HTTP : "), controller_number, ControllerSettings);
  bool success = ControllerSettings.connectToHost(client);
  return count_connection_results(
@@ -613,8 +615,10 @@ bool send_via_http(const String& logIdentifier, WiFiClient& client, const String
  client.print(postStr);

  unsigned long timer = millis() + 200;
-  while (!client.available() && !timeOutReached(timer))
+  while (!client.available()) {
+    if (timeOutReached(timer)) return false;
    delay(1);
+  }

  // Read all the lines of the reply from server and print them to Serial
  while (client_available(client) && !success) {
@@ -73,6 +73,7 @@ boolean NPlugin_001_send(const NotificationSettingsStruct& notificationsettings,

 	// Use WiFiClient class to create TCP connections
 	WiFiClient client;
+	client.setTimeout(CONTROLLER_CLIENTTIMEOUT_DFLT);
 	String aHost = notificationsettings.Server;
 	addLog(LOG_LEVEL_DEBUG, String(F("EMAIL: Connecting to ")) + aHost + notificationsettings.Port);
 	if (client.connect(aHost.c_str(), notificationsettings.Port) != 1) {
@@ -257,6 +257,22 @@ boolean Plugin_001(byte function, struct EventStruct *event, String& string)
          }
        }

+        if (command == F("gpiotoggle"))
+        {
+          success = true;
+          byte mode;
+          uint16_t currentState;
+
+          getPinState(PLUGIN_ID_001, event->Par1, &mode, &currentState);
+          if (mode == PIN_MODE_OUTPUT || mode == PIN_MODE_UNDEFINED) { //toggle only output pins
+            digitalWrite(event->Par1, !currentState);
+            setPinState(PLUGIN_ID_001, event->Par1, PIN_MODE_OUTPUT, !currentState);
+            log = String(F("SW   : Toggle GPIO ")) + String(event->Par1) + String(F(" Set to ")) + String(!currentState);
+            addLog(LOG_LEVEL_INFO, log);
+            SendStatus(event->Source, getPinStateJSON(SEARCH_PIN_STATE, PLUGIN_ID_001, event->Par1, log, 0));
+          }
+        }
+
        if (command == F("pwm"))
        {
          success = true;
@@ -90,7 +90,7 @@ boolean Plugin_004(byte function, struct EventStruct * event, String& string)
                  resolutionChoice = Plugin_004_DS_getResolution(savedAddress);
              else
                  resolutionChoice = 9;
-              String resultsOptions[4] = { "9", "10", "11", "12" };
+              String resultsOptions[4] = { F("9"), F("10"), F("11"), F("12") };
              int resultsOptionValues[4] = { 9, 10, 11, 12 };
              addFormSelector(F("Device Resolution"), F("plugin_004_res"), 4, resultsOptions, resultsOptionValues, resolutionChoice);
              addHtml(F(" Bit"));
@@ -105,7 +105,6 @@ boolean Plugin_004(byte function, struct EventStruct * event, String& string)

            // save the address for selected device and store into extra tasksettings
            Plugin_004_DallasPin = Settings.TaskDevicePin1[event->TaskIndex];
-            // byte devCount =
            if (Plugin_004_DallasPin != -1){
              Plugin_004_DS_scan(getFormItemInt(F("plugin_004_dev")), addr);
              for (byte x = 0; x < 8; x++)
@@ -124,11 +123,12 @@ boolean Plugin_004(byte function, struct EventStruct * event, String& string)
            {
                if (x != 0)
                    string += "-";
-                // string += String(ExtraTaskSettings.TaskDevicePluginConfigLong[x], HEX);
+                string += String(ExtraTaskSettings.TaskDevicePluginConfigLong[x], HEX);
            }
            success = true;
            break;
        }
+
        case PLUGIN_INIT:
        {
            Plugin_004_DallasPin = Settings.TaskDevicePin1[event->TaskIndex];
@@ -169,7 +169,7 @@ boolean Plugin_004(byte function, struct EventStruct * event, String& string)
                for (byte x = 0; x < 8; x++)
                {
                    if (x != 0)
-                        log += "-";
+                        log += '-';
                    log += String(ExtraTaskSettings.TaskDevicePluginConfigLong[x], HEX);
                }

@@ -9,6 +9,19 @@
 #define PLUGIN_VALUENAME1_005 "Temperature"
 #define PLUGIN_VALUENAME2_005 "Humidity"

+#define P005_DHT11    11
+#define P005_DHT12    12
+#define P005_DHT22    22
+#define P005_AM2301   23
+#define P005_SI7021   70
+
+#define P005_error_no_reading          1
+#define P005_error_protocol_timeout    2
+#define P005_error_checksum_error      3
+#define P005_error_invalid_NAN_reading 4
+#define P005_info_temperature          5
+#define P005_info_humidity             6
+
 uint8_t Plugin_005_DHT_Pin;

 boolean Plugin_005(byte function, struct EventStruct *event, String& string)
@@ -49,7 +62,7 @@ boolean Plugin_005(byte function, struct EventStruct *event, String& string)
    case PLUGIN_WEBFORM_LOAD:
      {
        const String options[] = { F("DHT 11"), F("DHT 22"), F("DHT 12"), F("Sonoff am2301"), F("Sonoff si7021") };
-        int indices[] = { 11, 22, 12, 23, 70 };
+        int indices[] = { P005_DHT11, P005_DHT22, P005_DHT12, P005_AM2301, P005_SI7021 };

        addFormSelector(F("DHT Type"), F("plugin_005_dhttype"), 5, options, indices, Settings.TaskDevicePluginConfig[event->TaskIndex][0] );

@@ -67,92 +80,7 @@ boolean Plugin_005(byte function, struct EventStruct *event, String& string)

    case PLUGIN_READ:
      {
-        byte dht_dat[5];
-        byte i;
-        boolean error = false;
-
-        byte Par3 = Settings.TaskDevicePluginConfig[event->TaskIndex][0];
-        Plugin_005_DHT_Pin = Settings.TaskDevicePin1[event->TaskIndex];
-
-        pinMode(Plugin_005_DHT_Pin, OUTPUT);
-        digitalWrite(Plugin_005_DHT_Pin, LOW);              // Pull low
-        if(Par3 == 11 || Par3 == 22 || Par3 == 12)  delay(18);
-        else if (Par3 == 23 )         delayMicroseconds(900);
-        else if (Par3 == 70 )         delayMicroseconds(500);
-        pinMode(Plugin_005_DHT_Pin, INPUT);                 // change pin to input
-        delayMicroseconds(50);
-
-        error = waitState(0);
-        if(error)
-        {   logError(event, F("DHT  : no Reading !"));
-            break;
-        }
-        error = waitState(1);
-        if(error)
-        {   logError(event, F("DHT  : no Reading !"));
-            break;
-        }
-        noInterrupts();
-        error = waitState(0);
-        if(error)
-        {   logError(event, F("DHT  : no Reading !"));
-            break;
-        }
-        for (i = 0; i < 5; i++)
-        {
-            byte data = Plugin_005_read_dht_dat();
-            if(data == -1)
-            {   logError(event, F("DHT  : protocol timeout!"));
-                break;
-            }
-            dht_dat[i] = data;
-        }
-        interrupts();
-
-              // Checksum calculation is a Rollover Checksum by design!
-        byte dht_check_sum = (dht_dat[0] + dht_dat[1] + dht_dat[2] + dht_dat[3]) & 0xFF; // check check_sum
-        if (dht_dat[4] != dht_check_sum)
-        {
-            logError(event, F("DHT  : checksum error!"));
-            break;
-        }
-
-        float temperature = NAN;
-        float humidity = NAN;
-        if (Par3 == 11)
-        {
-          temperature = float(dht_dat[2]); // Temperature
-          humidity = float(dht_dat[0]); // Humidity
-        }
-        else if (Par3 == 12)
-        {
-            temperature = float(dht_dat[2]*10 + (dht_dat[3] & 0x7f)) / 10.0; // Temperature
-            if (dht_dat[3] & 0x80) { temperature = -temperature; } // Negative temperature
-            humidity = float(dht_dat[0]*10+dht_dat[1]) / 10.0; // Humidity
-        }
-        else if (Par3 == 22 || Par3 == 23 || Par3 == 70)
-        {
-          if (dht_dat[2] & 0x80) // negative temperature
-            temperature = -0.1 * word(dht_dat[2] & 0x7F, dht_dat[3]);
-          else
-            temperature = 0.1 * word(dht_dat[2], dht_dat[3]);
-          humidity = 0.1 * word(dht_dat[0], dht_dat[1]); // Humidity
-        }
-
-        if (temperature == NAN || humidity == NAN)
-        {     logError(event, F("DHT  : invalid NAN reading !"));
-              break;
-        }
-
-        UserVar[event->BaseVarIndex] = temperature;
-        UserVar[event->BaseVarIndex + 1] = humidity;
-        String log = F("DHT  : Temperature: ");
-        log += UserVar[event->BaseVarIndex];
-        addLog(LOG_LEVEL_INFO, log);
-        log = F("DHT  : Humidity: ");
-        log += UserVar[event->BaseVarIndex + 1];
-        addLog(LOG_LEVEL_INFO, log);
-        success = true;
+        success = P005_do_plugin_read(event);
        break;
      }
  }
@@ -163,28 +91,144 @@ boolean Plugin_005(byte function, struct EventStruct *event, String& string)
 /*********************************************************************************************\
 * DHT sub to log an error
 \*********************************************************************************************/
-void logError(struct EventStruct *event, String text)
+void P005_log(struct EventStruct *event, int logNr)
 {
+  bool isError = true;
+  String text = F("DHT  : ");
+  switch (logNr) {
+    case P005_error_no_reading:          text += F("No Reading"); break;
+    case P005_error_protocol_timeout:    text += F("Protocol Timeout"); break;
+    case P005_error_checksum_error:      text += F("Checksum Error"); break;
+    case P005_error_invalid_NAN_reading: text += F("Invalid NAN reading"); break;
+    case P005_info_temperature:
+      text += F("Temperature: ");
+      text += UserVar[event->BaseVarIndex];
+      isError = false;
+      break;
+    case P005_info_humidity:
+      text += F("Humidity: ");
+      text += UserVar[event->BaseVarIndex + 1];
+      isError = false;
+      break;
+  }
  addLog(LOG_LEVEL_INFO, text);
-  UserVar[event->BaseVarIndex] = NAN;
-  UserVar[event->BaseVarIndex + 1] = NAN;
+  if (isError) {
+    UserVar[event->BaseVarIndex] = NAN;
+    UserVar[event->BaseVarIndex + 1] = NAN;
+  }
 }

 /*********************************************************************************************\
-* DHT sub to wait until a pin is in a certiin state
+* DHT sub to wait until a pin is in a certain state
 \*********************************************************************************************/
-boolean waitState(int state)
+boolean P005_waitState(int state)
 {
-  byte counter = 0;
-  while (( digitalRead(Plugin_005_DHT_Pin) != state) && (counter < 100))
+  unsigned long timeout = micros() + 100;
+  while (digitalRead(Plugin_005_DHT_Pin) != state)
  {
+    if (usecTimeOutReached(timeout)) return false;
    delayMicroseconds(1);
-    counter++;
  }
-  if( counter < 100) return false;
  return true;
 }

+/*********************************************************************************************\
+* Perform the actual reading + interpreting of data.
+\*********************************************************************************************/
+bool P005_do_plugin_read(struct EventStruct *event) {
+  byte i;
+
+  byte Par3 = Settings.TaskDevicePluginConfig[event->TaskIndex][0];
+  Plugin_005_DHT_Pin = Settings.TaskDevicePin1[event->TaskIndex];
+
+  pinMode(Plugin_005_DHT_Pin, OUTPUT);
+  digitalWrite(Plugin_005_DHT_Pin, LOW);              // Pull low
+  switch (Par3) {
+    case P005_DHT11:
+    case P005_DHT22:
+    case P005_DHT12:  delay(18); break;  // FIXME TD-er: Must this be so long?
+    case P005_AM2301: delayMicroseconds(900); break;
+    case P005_SI7021: delayMicroseconds(500); break;
+  }
+  switch (Par3) {
+    case P005_DHT11:
+    case P005_DHT22:
+    case P005_DHT12:
+    case P005_AM2301:
+      pinMode(Plugin_005_DHT_Pin, INPUT);
+      delayMicroseconds(50);
+      break;
+    case P005_SI7021:
+      // See: https://github.com/letscontrolit/ESPEasy/issues/1798
+      digitalWrite(Plugin_005_DHT_Pin, HIGH);
+      delayMicroseconds(20);
+      pinMode(Plugin_005_DHT_Pin, INPUT);
+      break;
+  }
+  if(!P005_waitState(0)) {P005_log(event, P005_error_no_reading); return false; }
+  if(!P005_waitState(1)) {P005_log(event, P005_error_no_reading); return false; }
+  noInterrupts();
+  if(!P005_waitState(0)) {P005_log(event, P005_error_no_reading); return false; }
+  bool readingAborted = false;
+  byte dht_dat[5];
+  for (i = 0; i < 5 && !readingAborted; i++)
+  {
+      byte data = Plugin_005_read_dht_dat();
+      if(data == -1)
+      {   P005_log(event, P005_error_protocol_timeout);
+          readingAborted = true;
+      }
+      dht_dat[i] = data;
+  }
+  interrupts();
+  if (readingAborted)
+    return false;
+
+        // Checksum calculation is a Rollover Checksum by design!
+  byte dht_check_sum = (dht_dat[0] + dht_dat[1] + dht_dat[2] + dht_dat[3]) & 0xFF; // check check_sum
+  if (dht_dat[4] != dht_check_sum)
+  {
+      P005_log(event, P005_error_checksum_error);
+      return false;
+  }
+
+  float temperature = NAN;
+  float humidity = NAN;
+  switch (Par3) {
+    case P005_DHT11:
+      temperature = float(dht_dat[2]); // Temperature
+      humidity = float(dht_dat[0]); // Humidity
+      break;
+    case P005_DHT12:
+      temperature = float(dht_dat[2]*10 + (dht_dat[3] & 0x7f)) / 10.0; // Temperature
+      if (dht_dat[3] & 0x80) { temperature = -temperature; } // Negative temperature
+      humidity = float(dht_dat[0]*10+dht_dat[1]) / 10.0; // Humidity
+      break;
+    case P005_DHT22:
+    case P005_AM2301:
+    case P005_SI7021:
+      if (dht_dat[2] & 0x80) // negative temperature
+        temperature = -0.1 * word(dht_dat[2] & 0x7F, dht_dat[3]);
+      else
+        temperature = 0.1 * word(dht_dat[2], dht_dat[3]);
+      humidity = 0.1 * word(dht_dat[0], dht_dat[1]); // Humidity
+      break;
+  }
+
+  if (temperature == NAN || humidity == NAN)
+  {     P005_log(event, P005_error_invalid_NAN_reading);
+        return false;
+  }
+
+  UserVar[event->BaseVarIndex] = temperature;
+  UserVar[event->BaseVarIndex + 1] = humidity;
+  P005_log(event, P005_info_temperature);
+  P005_log(event, P005_info_humidity);
+  return true;
+}
+
+
+
 /*********************************************************************************************\
 * DHT sub to get an 8 bit value from the receiving bitstream
 \*********************************************************************************************/
@@ -192,31 +236,13 @@ int Plugin_005_read_dht_dat(void)
 {
  byte i = 0;
  byte result = 0;
-  byte counter = 0;
  for (i = 0; i < 8; i++)
  {
-    while ((!digitalRead(Plugin_005_DHT_Pin)) && (counter < 100))
-    {
-      delayMicroseconds(1);
-      counter++;
-    }
-    if (counter >= 100)
-    {
-      return -1;
-    }
+    if (!P005_waitState(1))  return -1;
    delayMicroseconds(35); // was 30
    if (digitalRead(Plugin_005_DHT_Pin))
      result |= (1 << (7 - i));
-    counter = 0;
-    while ((digitalRead(Plugin_005_DHT_Pin)) && (counter < 100))
-    {
-      delayMicroseconds(1);
-      counter++;
-    }
-    if (counter >= 100)
-    {
-      return -1;
-    }
+    if (!P005_waitState(0))  return -1;
  }
  return result;
 }
@@ -20,7 +20,7 @@ boolean Plugin_009(byte function, struct EventStruct *event, String& string)
      {
        Device[++deviceCount].Number = PLUGIN_ID_009;
        Device[deviceCount].Type = DEVICE_TYPE_I2C;
-        Device[deviceCount].VType = SENSOR_TYPE_SINGLE;
+        Device[deviceCount].VType = SENSOR_TYPE_SWITCH;
        Device[deviceCount].Ports = 16;
        Device[deviceCount].PullUpOption = false;
        Device[deviceCount].InverseLogicOption = false;
@@ -124,6 +124,22 @@ boolean Plugin_009(byte function, struct EventStruct *event, String& string)
          SendStatus(event->Source, getPinStateJSON(SEARCH_PIN_STATE, PLUGIN_ID_009, event->Par1, log, 0));
        }

+        if (command == F("mcpgpiotoggle"))
+        {
+          success = true;
+          byte mode;
+          uint16_t currentState;
+
+          getPinState(PLUGIN_ID_009, event->Par1, &mode, &currentState);
+          if (mode == PIN_MODE_OUTPUT || mode == PIN_MODE_UNDEFINED) {
+            setPinState(PLUGIN_ID_009, event->Par1, PIN_MODE_OUTPUT, !currentState);
+            Plugin_009_Write(event->Par1, !currentState);
+            log = String(F("MCP  : Toggle GPIO ")) + String(event->Par1) + String(F(" Set to ")) + String(!currentState);
+            addLog(LOG_LEVEL_INFO, log);
+            SendStatus(event->Source, getPinStateJSON(SEARCH_PIN_STATE, PLUGIN_ID_009, event->Par1, log, 0));
+          }
+        }
+
        if (command == F("mcppulse"))
        {
          success = true;
@@ -12,27 +12,21 @@
 #include <map>
 #include <NewPingESP8266.h>

-struct P_013_sensordef {
-  P_013_sensordef() : sonar(NULL) {}
-
-  P_013_sensordef(byte TRIG_Pin, byte IRQ_Pin, int16_t max_cm_distance) : sonar(NULL) {
-    sonar = new NewPingESP8266(TRIG_Pin, IRQ_Pin, max_cm_distance);
-  }
-
-  ~P_013_sensordef() {
-    if (sonar != NULL) {
-      delete sonar;
-      sonar = NULL;
-    }
-  }
-
-  NewPingESP8266 *sonar;
-};
-
-std::map<unsigned int, P_013_sensordef> P_013_sensordefs;
+// PlugIn specific defines
+// operatingMode
+#define OPMODE_VALUE        (0)
+#define OPMODE_STATE        (1)

+// measuringUnit
+#define UNIT_CM             (0)
+#define UNIT_INCH           (1)

+// filterType
+#define FILTER_NONE         (0)
+#define FILTER_MEDIAN       (1)

+// map of sensors
+std::map<unsigned int, std::shared_ptr<NewPingESP8266> > P_013_sensordefs;

 boolean Plugin_013(byte function, struct EventStruct *event, String& string)
 {
@@ -54,6 +48,7 @@ boolean Plugin_013(byte function, struct EventStruct *event, String& string)
        Device[deviceCount].SendDataOption = true;
        Device[deviceCount].TimerOption = true;
        Device[deviceCount].GlobalSyncOption = true;
+
        break;
      }

@@ -72,19 +67,51 @@ boolean Plugin_013(byte function, struct EventStruct *event, String& string)

    case PLUGIN_WEBFORM_LOAD:
      {
-        byte choice = Settings.TaskDevicePluginConfig[event->TaskIndex][0];
-        String options[2];
-        options[0] = F("Value");
-        options[1] = F("State");
-        int optionValues[2] = { 1, 2 };
-        addFormSelector(F("Mode"), F("plugin_013_mode"), 2, options, optionValues, choice);
+        int16_t operatingMode = Settings.TaskDevicePluginConfig[event->TaskIndex][0];
+        int16_t threshold = Settings.TaskDevicePluginConfig[event->TaskIndex][1];
+        int16_t max_distance = Settings.TaskDevicePluginConfig[event->TaskIndex][2];
+        int16_t measuringUnit = Settings.TaskDevicePluginConfig[event->TaskIndex][3];
+        int16_t filterType = Settings.TaskDevicePluginConfig[event->TaskIndex][4];
+        int16_t filterSize = Settings.TaskDevicePluginConfig[event->TaskIndex][5];

-        if (Settings.TaskDevicePluginConfig[event->TaskIndex][0] == 2)
-        {
-        	addFormNumericBox(F("Threshold"), F("plugin_013_threshold"), Settings.TaskDevicePluginConfig[event->TaskIndex][1]);
+        // default filtersize = 5
+        if (filterSize == 0) {
+          filterSize = 5;
+          Settings.TaskDevicePluginConfig[event->TaskIndex][5] = filterSize;
        }
-        addFormNumericBox(F("Max Distance"), F("plugin_013_max_distance"), Settings.TaskDevicePluginConfig[event->TaskIndex][2], 0, 500);
-        addUnit(F("cm"));
+
+
+        String strUnit = (measuringUnit == UNIT_CM) ? F("cm") : F("inch");
+
+        String optionsOpMode[2];
+        int optionValuesOpMode[2] = { 0, 1 };
+        optionsOpMode[0] = F("Value");
+        optionsOpMode[1] = F("State");
+        addFormSelector(F("Mode"), F("plugin_013_mode"), 2, optionsOpMode, optionValuesOpMode, operatingMode);
+
+        if (operatingMode == OPMODE_STATE)
+        {
+        	addFormNumericBox(F("Threshold"), F("plugin_013_threshold"), threshold);
+          addUnit(strUnit);
+        }
+        addFormNumericBox(F("Max Distance"), F("plugin_013_max_distance"), max_distance, 0, 500);
+        addUnit(strUnit);
+
+        String optionsUnit[2];
+        int optionValuesUnit[2] = { 0, 1 };
+        optionsUnit[0] = F("Metric");
+        optionsUnit[1] = F("Imperial");
+        addFormSelector(F("Unit"), F("plugin_013_Unit"), 2, optionsUnit, optionValuesUnit, measuringUnit);
+
+        String optionsFilter[2];
+        int optionValuesFilter[2] = { 0, 1 };
+        optionsFilter[0] = F("None");
+        optionsFilter[1] = F("Median");
+        addFormSelector(F("Filter"), F("plugin_013_FilterType"), 2, optionsFilter, optionValuesFilter, filterType);
+
+        // enable filtersize option if filter is used,
+        if (filterType != FILTER_NONE)
+        	addFormNumericBox(F("Filter size"), F("plugin_013_FilterSize"), filterSize, 2, 20);

        success = true;
        break;
@@ -92,33 +119,60 @@ boolean Plugin_013(byte function, struct EventStruct *event, String& string)

    case PLUGIN_WEBFORM_SAVE:
      {
+        int16_t operatingMode = Settings.TaskDevicePluginConfig[event->TaskIndex][0];
+        int16_t filterType = Settings.TaskDevicePluginConfig[event->TaskIndex][4];
+
        Settings.TaskDevicePluginConfig[event->TaskIndex][0] = getFormItemInt(F("plugin_013_mode"));
-        if (Settings.TaskDevicePluginConfig[event->TaskIndex][0] == 2)
-        {
+        if (operatingMode == OPMODE_STATE)
          Settings.TaskDevicePluginConfig[event->TaskIndex][1] = getFormItemInt(F("plugin_013_threshold"));
-        }
        Settings.TaskDevicePluginConfig[event->TaskIndex][2] = getFormItemInt(F("plugin_013_max_distance"));
+
+        Settings.TaskDevicePluginConfig[event->TaskIndex][3] = getFormItemInt(F("plugin_013_Unit"));
+        Settings.TaskDevicePluginConfig[event->TaskIndex][4] = getFormItemInt(F("plugin_013_FilterType"));
+        if (filterType != FILTER_NONE)
+          Settings.TaskDevicePluginConfig[event->TaskIndex][5] = getFormItemInt(F("plugin_013_FilterSize"));
+
        success = true;
        break;
      }

    case PLUGIN_INIT:
      {
-        byte Plugin_013_TRIG_Pin = Settings.TaskDevicePin1[event->TaskIndex];
-        byte Plugin_013_IRQ_Pin = Settings.TaskDevicePin2[event->TaskIndex];
-        int16_t max_cm_distance = Settings.TaskDevicePluginConfig[event->TaskIndex][2];
+        int16_t max_distance = Settings.TaskDevicePluginConfig[event->TaskIndex][2];
+        int16_t measuringUnit = Settings.TaskDevicePluginConfig[event->TaskIndex][3];
+        int16_t filterType = Settings.TaskDevicePluginConfig[event->TaskIndex][4];
+        int16_t filterSize = Settings.TaskDevicePluginConfig[event->TaskIndex][5];
+
+        int8_t Plugin_013_TRIG_Pin = Settings.TaskDevicePin1[event->TaskIndex];
+        int8_t Plugin_013_IRQ_Pin = Settings.TaskDevicePin2[event->TaskIndex];
+        int16_t max_distance_cm = (measuringUnit == UNIT_CM) ? max_distance : (float)max_distance * 2.54f;
+
+        // create sensor instance and add to std::map
+        P_013_sensordefs.erase(event->TaskIndex);
        P_013_sensordefs[event->TaskIndex] =
-          P_013_sensordef(Plugin_013_TRIG_Pin, Plugin_013_IRQ_Pin, max_cm_distance);
+          std::shared_ptr<NewPingESP8266> (new NewPingESP8266(Plugin_013_TRIG_Pin, Plugin_013_IRQ_Pin, max_distance_cm));
+
        String log = F("ULTRASONIC : TaskNr: ");
        log += event->TaskIndex +1;
        log += F(" TrigPin: ");
        log += Plugin_013_TRIG_Pin;
        log += F(" IRQ_Pin: ");
        log += Plugin_013_IRQ_Pin;
-        log += F(" max dist cm: ");
-        log += max_cm_distance;
+        log += F(" max dist ");
+        log += (measuringUnit == UNIT_CM) ? F("[cm]: ") : F("[inch]: ");
+        log += max_distance;
        log += F(" max echo: ");
-        log += P_013_sensordefs[event->TaskIndex].sonar->getMaxEchoTime();
+        log += P_013_sensordefs[event->TaskIndex]->getMaxEchoTime();
+        log += F(" Filter: ");
+        if (filterType == FILTER_NONE)
+          log += F("none");
+        else
+          if (filterType == FILTER_MEDIAN) {
+            log += F("Median size: ");
+            log += filterSize;
+          }
+          else
+            log += F("invalid!");
        log += F(" nr_tasks: ");
        log += P_013_sensordefs.size();
        addLog(LOG_LEVEL_INFO, log);
@@ -136,7 +190,6 @@ boolean Plugin_013(byte function, struct EventStruct *event, String& string)
        log += F(" usec, ");
        addLog(LOG_LEVEL_INFO, log);

-
        success = true;
        break;
      }
@@ -149,39 +202,48 @@ boolean Plugin_013(byte function, struct EventStruct *event, String& string)

    case PLUGIN_READ: // If we select value mode, read and send the value based on global timer
      {
-        if (Settings.TaskDevicePluginConfig[event->TaskIndex][0] == 1)
+        int16_t operatingMode = Settings.TaskDevicePluginConfig[event->TaskIndex][0];
+        int16_t measuringUnit = Settings.TaskDevicePluginConfig[event->TaskIndex][3];
+
+        if (operatingMode == OPMODE_VALUE)
        {
          float value = Plugin_013_read(event->TaskIndex);
          String log = F("ULTRASONIC : TaskNr: ");
          log += event->TaskIndex +1;
          log += F(" Distance: ");
-          if (value > 0)
+          UserVar[event->BaseVarIndex] = value;
+          log += UserVar[event->BaseVarIndex];
+          log += (measuringUnit == UNIT_CM) ? F(" cm ") : F(" inch ");
+          if (value == NO_ECHO)
          {
-            UserVar[event->BaseVarIndex] = value;
-            log += UserVar[event->BaseVarIndex];
-            success = true;
+             log += F(" Error: ");
+             log += Plugin_013_getErrorStatusString(event->TaskIndex);
          }
-          else
-            log += F("No reading!");

-        addLog(LOG_LEVEL_INFO,log);
+          addLog(LOG_LEVEL_INFO,log);
        }
+        success = true;
        break;
      }

    case PLUGIN_TEN_PER_SECOND: // If we select state mode, do more frequent checks and send only state changes
      {
-        if (Settings.TaskDevicePluginConfig[event->TaskIndex][0] == 2)
+        int16_t operatingMode = Settings.TaskDevicePluginConfig[event->TaskIndex][0];
+        int16_t threshold = Settings.TaskDevicePluginConfig[event->TaskIndex][1];
+
+        if (operatingMode == OPMODE_STATE)
        {
          byte state = 0;
          float value = Plugin_013_read(event->TaskIndex);
-          if (value > 0)
+          if (value != NO_ECHO)
          {
-            if (value < Settings.TaskDevicePluginConfig[event->TaskIndex][1])
+            if (value < threshold)
              state = 1;
            if (state != switchstate[event->TaskIndex])
            {
-              String log = F("ULTRASONIC : State ");
+              String log = F("ULTRASONIC : TaskNr: ");
+              log += event->TaskIndex +1;
+              log += F(" state: ");
              log += state;
              addLog(LOG_LEVEL_INFO,log);
              switchstate[event->TaskIndex] = state;
@@ -190,6 +252,14 @@ boolean Plugin_013(byte function, struct EventStruct *event, String& string)
              sendData(event);
            }
          }
+          else {
+            String log = F("ULTRASONIC : TaskNr: ");
+            log += event->TaskIndex +1;
+            log += F(" Error: ");
+            log += Plugin_013_getErrorStatusString(event->TaskIndex);
+            addLog(LOG_LEVEL_INFO,log);
+          }
+
        }
        success = true;
        break;
@@ -202,11 +272,82 @@ boolean Plugin_013(byte function, struct EventStruct *event, String& string)
 float Plugin_013_read(unsigned int taskIndex)
 /*********************************************************************/
 {
-  if (P_013_sensordefs.count(taskIndex) == 0) return 0;
-  if (P_013_sensordefs[taskIndex].sonar == NULL) return 0;
-  delay(1);
-  float distance = P_013_sensordefs[taskIndex].sonar->ping_cm();
-  delay(1);
-  return distance;
+  if (P_013_sensordefs.count(taskIndex) == 0)
+    return 0;
+
+  int16_t max_distance = Settings.TaskDevicePluginConfig[taskIndex][2];
+  int16_t measuringUnit = Settings.TaskDevicePluginConfig[taskIndex][3];
+  int16_t filterType = Settings.TaskDevicePluginConfig[taskIndex][4];
+  int16_t filterSize = Settings.TaskDevicePluginConfig[taskIndex][5];
+  int16_t max_distance_cm = (measuringUnit == UNIT_CM) ? max_distance : (float)max_distance * 2.54f;
+
+  unsigned int echoTime = 0;
+
+  switch  (filterType) {
+    case FILTER_NONE:
+      echoTime = (P_013_sensordefs[taskIndex])->ping();
+      break;
+    case FILTER_MEDIAN:
+      echoTime = (P_013_sensordefs[taskIndex])->ping_median(filterSize, max_distance_cm);
+      break;
+    default:
+      addLog(LOG_LEVEL_INFO, F("invalid Filter Type setting!"));
+  }
+
+  if (measuringUnit == UNIT_CM)
+    return NewPingESP8266::convert_cm_F(echoTime);
+  else
+    return NewPingESP8266::convert_in_F(echoTime);
+}
+
+/*********************************************************************/
+String Plugin_013_getErrorStatusString(unsigned int taskIndex)
+/*********************************************************************/
+{
+  if (P_013_sensordefs.count(taskIndex) == 0)
+    return String(F("invalid taskindex"));
+
+  switch ((P_013_sensordefs[taskIndex])->getErrorState()) {
+    case NewPingESP8266::STATUS_SENSOR_READY: {
+      return String(F("Sensor ready"));
+      break;
+    }
+
+    case NewPingESP8266::STATUS_MEASUREMENT_VALID: {
+      return String(F("no error, measurement valid"));
+      break;
+    }
+
+    case NewPingESP8266::STATUS_ECHO_TRIGGERED: {
+      return String(F("Echo triggered, waiting for Echo end"));
+      break;
+    }
+
+    case NewPingESP8266::STATUS_ECHO_STATE_ERROR: {
+      return String(F("Echo pulse error, Echopin not low on trigger"));
+      break;
+    }
+
+    case NewPingESP8266::STATUS_ECHO_START_TIMEOUT_50ms: {
+      return String(F("Echo timeout error, no echo start whithin 50 ms"));
+      break;
+    }
+
+    case NewPingESP8266::STATUS_ECHO_START_TIMEOUT_DISTANCE: {
+      return String(F("Echo timeout error, no echo start whithin time for max. distance"));
+      break;
+    }
+
+    case NewPingESP8266::STATUS_MAX_DISTANCE_EXCEEDED: {
+      return String(F("Echo too late, maximum distance exceeded"));
+      break;
+    }
+
+    default: {
+      return String(F("unknown error"));
+      break;
+    }
+
+  }
 }
 #endif // USES_P013
@@ -41,6 +41,9 @@ decode_results results;
 #define PLUGIN_NAME_016       "Communication - TSOP4838"
 #define PLUGIN_VALUENAME1_016 "IR"

+// A lot of the following code has been taken directly (with permission) from the IRrecvDumpV2.ino example code
+// of the IRremoteESP8266 library. (https://github.com/markszabo/IRremoteESP8266)
+
 // ==================== start of TUNEABLE PARAMETERS ====================
 // As this program is a special purpose capture/decoder, let us use a larger
 // than normal buffer so we can handle Air Conditioner remote codes.
@@ -155,7 +158,10 @@ boolean Plugin_016(byte function, struct EventStruct *event, String& string)
      {
        if (irReceiver->decode(&results))
        {
+          unsigned long IRcode = results.value;
          irReceiver->resume();
+          UserVar[event->BaseVarIndex] = (IRcode & 0xFFFF);
+          UserVar[event->BaseVarIndex + 1] = ((IRcode >> 16) & 0xFFFF);
          String log = "IR: ";
          if (results.overflow)
            log += F("WARNING: IR code is too big for buffer. This result shouldn't be trusted until this is resolved. Edit & increase CAPTURE_BUFFER_SIZE.\n");
@@ -20,7 +20,7 @@ boolean Plugin_019(byte function, struct EventStruct *event, String& string)
      {
        Device[++deviceCount].Number = PLUGIN_ID_019;
        Device[deviceCount].Type = DEVICE_TYPE_I2C;
-        Device[deviceCount].VType = SENSOR_TYPE_SINGLE;
+        Device[deviceCount].VType = SENSOR_TYPE_SWITCH;
        Device[deviceCount].Ports = 8;
        Device[deviceCount].PullUpOption = false;
        Device[deviceCount].InverseLogicOption = false;
@@ -128,6 +128,22 @@ boolean Plugin_019(byte function, struct EventStruct *event, String& string)
          SendStatus(event->Source, getPinStateJSON(SEARCH_PIN_STATE, PLUGIN_ID_019, event->Par1, log, 0));
        }

+        if (command == F("pcfgpiotoggle"))
+        {
+          success = true;
+          byte mode;
+          uint16_t currentState;
+
+          getPinState(PLUGIN_ID_019, event->Par1, &mode, &currentState);
+          if (mode == PIN_MODE_OUTPUT || mode == PIN_MODE_UNDEFINED) {
+            setPinState(PLUGIN_ID_019, event->Par1, PIN_MODE_OUTPUT, !currentState);
+            Plugin_019_Write(event->Par1, !currentState);
+            log = String(F("PCF  : Toggle GPIO ")) + String(event->Par1) + String(F(" Set to ")) + String(!currentState);
+            addLog(LOG_LEVEL_INFO, log);
+            SendStatus(event->Source, getPinStateJSON(SEARCH_PIN_STATE, PLUGIN_ID_019, event->Par1, log, 0));
+          }
+        }
+
        if (command == F("pcfpulse"))
        {
          success = true;
@@ -382,8 +382,10 @@ bool Plugin_028_update_measurements(const uint8_t i2cAddress, float tempOffset,
    return false;
  }

-  if (!timeOutReached(sensor.last_measurement + 1000)) {
-    // Must wait one second to make sure the filtered values stabilize.
+  // It takes at least 1.587 sec for valit measurements to complete.
+  // The datasheet names this the "T63" moment.
+  // 1 second = 63% of the time needed to perform a measurement.
+  if (!timeOutReached(sensor.last_measurement + 1587)) {
    return false;
  }
  if (!Plugin_028_readUncompensatedData(i2cAddress)) {
@@ -510,7 +512,7 @@ bool Plugin_028_begin(uint8_t i2cAddress) {
  I2C_write8_reg(i2cAddress, BMx280_REGISTER_SOFTRESET, 0xB6);
  delay(2);  // Startup time is 2 ms (datasheet)
  Plugin_028_readCoefficients(i2cAddress);
-  delay(65); //May be needed here as well to fix first wrong measurement?
+//  delay(65); //May be needed here as well to fix first wrong measurement?
  return true;
 }

@@ -548,8 +550,8 @@ void Plugin_028_readCoefficients(uint8_t i2cAddress)
 bool Plugin_028_readUncompensatedData(uint8_t i2cAddress) {
  // wait until measurement has been completed, otherwise we would read
  // the values from the last measurement
-  while (I2C_read8_reg(i2cAddress, BMx280_REGISTER_STATUS) & 0x08)
-    delay(1);
+  if (I2C_read8_reg(i2cAddress, BMx280_REGISTER_STATUS) & 0x08)
+    return false;

  I2Cdata_bytes BME280_data(BME280_P_T_H_DATA_LEN, BME280_DATA_ADDR);
  bool allDataRead = I2C_read_bytes(i2cAddress, BME280_data);
@@ -642,13 +644,6 @@ float Plugin_028_readHumidity(uint8_t i2cAddress)
    // No support for humidity
    return 0.0;
  }
-  // It takes at least 1.587 sec for valit measurements to complete.
-  // The datasheet names this the "T63" moment.
-  // 1 second = 63% of the time needed to perform a measurement.
-  unsigned long difTime = millis() - sensor.last_measurement;
-  if (difTime < 1587) {
-    delay(1587 - difTime);
-  }
  int32_t adc_H = sensor.uncompensated.humidity;

  int32_t v_x1_u32r;
@@ -53,7 +53,7 @@ boolean Plugin_029(byte function, struct EventStruct *event, String& string)
        addHtml(F("<TR><TD>IDX:<TD>"));
        String id = F("TDID");   //="taskdeviceid"
        id += controllerNr + 1;
-        addNumericBox(id, Settings.TaskDeviceID[controllerNr][event->TaskIndex], 0, 9999);
+        addNumericBox(id, Settings.TaskDeviceID[controllerNr][event->TaskIndex], 0, DOMOTICZ_MAX_IDX);
        success = true;
        break;
      }
@@ -274,6 +274,8 @@ boolean Plugin_035(byte function, struct EventStruct *event, String& string)
  return success;
 }

+// A lot of the following code has been taken directly (with permission) from the IRMQTTServer.ino example code
+// of the IRremoteESP8266 library. (https://github.com/markszabo/IRremoteESP8266)

 // Parse an Air Conditioner A/C Hex String/code and send it.
 // Args:
@@ -615,4 +617,4 @@ uint16_t countValuesInStr(const String str, char sep) {
 //  }
 //  return result;
 //}
-#endif // USES_P035
+#endif // USES_P035
@@ -24,6 +24,37 @@
 WiFiClient espclient_037;
 PubSubClient *MQTTclient_037 = NULL;
 bool MQTTclient_037_connected = false;
+int reconnectCount = 0;
+
+String getClientName() {
+  //
+  // Generate the MQTT import client name from the system name and a suffix
+  //
+  String tmpClientName = F("%sysname%-Import");
+  String ClientName = parseTemplate(tmpClientName, 20);
+  if (reconnectCount != 0) ClientName += reconnectCount;
+  return ClientName;
+}
+
+void Plugin_037_try_connect() {
+  Plugin_037_update_connect_status();
+  if (MQTTclient_037_connected) return;
+  // workaround see: https://github.com/esp8266/Arduino/issues/4497#issuecomment-373023864
+  espclient_037 = WiFiClient();
+  espclient_037.setTimeout(CONTROLLER_CLIENTTIMEOUT_DFLT);
+
+  if (MQTTclient_037 == NULL) {
+    MQTTclient_037 = new PubSubClient(espclient_037);
+  }
+  if (MQTTConnect_037())
+  {
+    //		Subscribe to ALL the topics from ALL instance of this import module
+    MQTTSubscribe_037();
+  } else {
+    MQTTclient_037->disconnect();
+  }
+  Plugin_037_update_connect_status();
+}

 void Plugin_037_update_connect_status() {
  bool connected = false;
@@ -39,6 +70,8 @@ void Plugin_037_update_connect_status() {
    if (!connected) {
      // workaround see: https://github.com/esp8266/Arduino/issues/4497#issuecomment-373023864
      espclient_037 = WiFiClient();
+      espclient_037.setTimeout(CONTROLLER_CLIENTTIMEOUT_DFLT);
+      ++reconnectCount;
      addLog(LOG_LEVEL_ERROR, F("IMPT : MQTT 037 Connection lost"));
    }
  }
@@ -49,11 +82,6 @@ boolean Plugin_037(byte function, struct EventStruct *event, String& string)
  boolean success = false;

  char deviceTemplate[4][41];		// variable for saving the subscription topics
-  //
-  // Generate the MQTT import client name from the system name and a suffix
-  //
-  String tmpClientName = F("%sysname%-Import");
-  String ClientName = parseTemplate(tmpClientName, 20);

  switch (function)
  {
@@ -121,30 +149,23 @@ boolean Plugin_037(byte function, struct EventStruct *event, String& string)

    case PLUGIN_INIT:
      {
-        if (!MQTTclient_037) {
-          MQTTclient_037 = new PubSubClient(espclient_037);
-        }
-
+        success = false;
        //    When we edit the subscription data from the webserver, the plugin is called again with init.
        //    In order to resubscribe we have to disconnect and reconnect in order to get rid of any obsolete subscriptions
-
-        MQTTclient_037->disconnect();
-
-        if (MQTTConnect_037(ClientName))
-        {
-          //		Subscribe to ALL the topics from ALL instance of this import module
-          MQTTSubscribe_037();
-          success = true;
-        }
-        else
-        {
-          success = false;
+        if (MQTTclient_037 != NULL) {
+          MQTTclient_037->disconnect();
+          if (MQTTConnect_037())
+          {
+            //		Subscribe to ALL the topics from ALL instance of this import module
+            MQTTSubscribe_037();
+            success = true;
+          }
        }
      }

    case PLUGIN_TEN_PER_SECOND:
      {
-        if (!MQTTclient_037->loop()) {		// Listen out for callbacks
+        if (MQTTclient_037 != NULL && !MQTTclient_037->loop()) {		// Listen out for callbacks
          Plugin_037_update_connect_status();
        }
        success = true;
@@ -154,25 +175,26 @@ boolean Plugin_037(byte function, struct EventStruct *event, String& string)
    case PLUGIN_ONCE_A_SECOND:
      {
        //  Here we check that the MQTT client is alive.
+        Plugin_037_try_connect();
+        if (MQTTclient_037 != NULL) {
+          if (!MQTTclient_037->connected() || MQTTclient_should_reconnect) {
+            if (MQTTclient_should_reconnect) {
+              addLog(LOG_LEVEL_ERROR, F("IMPT : MQTT 037 Intentional reconnect"));
+            }

-        if (!MQTTclient_037->connected() || MQTTclient_should_reconnect) {
-          if (MQTTclient_should_reconnect) {
-            addLog(LOG_LEVEL_ERROR, F("IMPT : MQTT 037 Intentional reconnect"));
+            MQTTclient_037->disconnect();
+            Plugin_037_update_connect_status();
+            delay(250);
+
+            if (! MQTTConnect_037()) {
+              success = false;
+              break;
+            }
+
+            MQTTSubscribe_037();
          }
-
-          MQTTclient_037->disconnect();
-          Plugin_037_update_connect_status();
-          delay(250);
-
-          if (! MQTTConnect_037(ClientName)) {
-            success = false;
-            break;
-          }
-
-          MQTTSubscribe_037();
+          success = true;
        }
-
-        success = true;
        break;
      }

@@ -260,6 +282,7 @@ boolean Plugin_037(byte function, struct EventStruct *event, String& string)
 }
 boolean MQTTSubscribe_037()
 {
+  if (!MQTTclient_037_connected) return false;

  // Subscribe to the topics requested by ALL calls to this plugin.
  // We do this because if the connection to the broker is lost, we want to resubscribe for all instances.
@@ -283,7 +306,7 @@ boolean MQTTSubscribe_037()
        if (subscribeTo.length() > 0)
        {
          parseSystemVariables(subscribeTo, false);
-          if (MQTTclient_037->subscribe(subscribeTo.c_str()))
+          if (MQTTclient_037 != NULL && MQTTclient_037->subscribe(subscribeTo.c_str()))
          {
            String log = F("IMPT : [");
            LoadTaskSettings(y);
@@ -350,9 +373,11 @@ void mqttcallback_037(char* c_topic, byte* b_payload, unsigned int length)
 // For some reason this seems to failduring the call in INIT- however it succeeds later during recovery
 // It would be nice to understand this....

-boolean MQTTConnect_037(String clientid)
+boolean MQTTConnect_037()
 {
  boolean result = false;
+  if (MQTTclient_037 == NULL) return false;
+  String clientid = getClientName();
  // @ToDo TD-er: Plugin allows for more than one MQTT controller, but we're now using only the first enabled one.
  int enabledMqttController = firstEnabledMQTTController();
  if (enabledMqttController < 0) {
@@ -368,7 +393,7 @@ boolean MQTTConnect_037(String clientid)
    return false; // Not connected, so no use in wasting time to connect to a host.
  }
  ControllerSettingsStruct ControllerSettings;
-  LoadControllerSettings(enabledMqttController, (byte*)&ControllerSettings, sizeof(ControllerSettings));
+  LoadControllerSettings(enabledMqttController, ControllerSettings);
  if (ControllerSettings.UseDNS) {
    MQTTclient_037->setServer(ControllerSettings.getHost().c_str(), ControllerSettings.Port);
  } else {
@@ -16,7 +16,7 @@

 #define P044_STATUS_LED 12
 #define P044_BUFFER_SIZE 1024
-#define P044_NETBUF_SIZE 600
+#define P044_NETBUF_SIZE 128
 #define P044_DISABLED 0
 #define P044_WAITING 1
 #define P044_READING 2
@@ -31,7 +31,7 @@ boolean CRCcheck = false;
 unsigned int currCRC = 0;
 int checkI = 0;

-WiFiServer *P1GatewayServer;
+WiFiServer *P1GatewayServer = nullptr;
 WiFiClient P1GatewayClient;

 boolean Plugin_044(byte function, struct EventStruct *event, String& string)
@@ -125,7 +125,11 @@ boolean Plugin_044(byte function, struct EventStruct *event, String& string)
          #if defined(ESP32)
            Serial.begin(ExtraTaskSettings.TaskDevicePluginConfigLong[1], serialconfig);
          #endif
-          if (P1GatewayServer) P1GatewayServer->close();
+          if (P1GatewayServer)
+          {
+            P1GatewayServer->close();
+            delete P1GatewayServer;
+          }
          P1GatewayServer = new WiFiServer(ExtraTaskSettings.TaskDevicePluginConfigLong[0]);
          P1GatewayServer->begin();

@@ -164,7 +168,7 @@ boolean Plugin_044(byte function, struct EventStruct *event, String& string)
      {
        if (P1GatewayServer) {
          P1GatewayServer->close();
-          //FIXME: shouldnt P1P1GatewayServer be deleted?
+          delete P1GatewayServer;
          P1GatewayServer = NULL;
        }
        success = true;
@@ -175,7 +179,6 @@ boolean Plugin_044(byte function, struct EventStruct *event, String& string)
      {
        if (Plugin_044_init)
        {
-          size_t bytes_read;
          if (P1GatewayServer->hasClient())
          {
            if (P1GatewayClient) P1GatewayClient.stop();
@@ -186,24 +189,25 @@ boolean Plugin_044(byte function, struct EventStruct *event, String& string)
          if (P1GatewayClient.connected())
          {
            connectionState = 1;
-            uint8_t net_buf[P044_BUFFER_SIZE];
+            uint8_t net_buf[P044_NETBUF_SIZE];
            int count = P1GatewayClient.available();
            if (count > 0)
            {
-              if (count > P044_BUFFER_SIZE)
-                count = P044_BUFFER_SIZE;
-              bytes_read = P1GatewayClient.read(net_buf, count);
-              Serial.write(net_buf, bytes_read);
+              size_t net_bytes_read;
+              if (count > P044_NETBUF_SIZE)
+                count = P044_NETBUF_SIZE;
+              net_bytes_read = P1GatewayClient.read(net_buf, count);
+              Serial.write(net_buf, net_bytes_read);
              Serial.flush(); // Waits for the transmission of outgoing serial data to complete

-              if (count == P044_BUFFER_SIZE) // if we have a full buffer, drop the last position to stuff with string end marker
+              if (count == P044_NETBUF_SIZE) // if we have a full buffer, drop the last position to stuff with string end marker
              {
                count--;
                // and log buffer full situation
                addLog(LOG_LEVEL_ERROR, F("P1   : Error: network buffer full!"));
              }
              net_buf[count] = 0; // before logging as a char array, zero terminate the last position to be safe.
-              char log[P044_BUFFER_SIZE + 40];
+              char log[P044_NETBUF_SIZE + 40];
              sprintf_P(log, PSTR("P1   : Error: N>: %s"), (char*)net_buf);
              addLog(LOG_LEVEL_DEBUG, log);
            }
@@ -458,6 +458,7 @@ void p073_FillBufferWithTemp(long temperature)
  int p073_numlenght = strlen(p073_digit);
  byte p073_dispdigit;
  for (int i=0;i<p073_numlenght;i++) {
+    p073_dispdigit = 10;           // default is space
    if (p073_digit[i] > 47 && p073_digit[i] < 58)
      p073_dispdigit = p073_digit[i]-48;
    else if (p073_digit[i] == 32)  // space
@@ -3,10 +3,15 @@
 //################################### Plugin 075: Nextion <info@sensorio.cz>  ###########################
 //###################################   Created on the work of  majklovec     ###########################
 //###################################    Revisions by BertB and ThomasB       ########################### 
-//###################################    Last Revision: Aug-03-2018 (TB)      ###########################
+//###################################    Last Revision: Oct-03-2018 (TB)      ###########################
 //#######################################################################################################
 //
-// Updated: Aug-03-2018, ThomasB.
+// Updated: Oct-03-2018, ThomasB.
+// Added DEBUG_LOG define to reduce info log messages and prevent serial log flooding.
+// Added SendStatus() to post log message on browser to acknowledge HTTP write.
+// Added reserve() to minimize string memory allocations.
+//
+// Aug-03-2018 change log summary:
 // This updated Nextion Plugin introduces hardware (UART) serial as an alternative to SoftSerial.
 // Hardware serial offers more reliable communication with the Nextion display.
 // Created on the experimental Serial.swap() work of BertB.
@@ -19,6 +24,9 @@
 // Defines start here
 // *****************************************************************************************************

+//#define DEBUG_LOG             // Enable this to include additional info messages in log output.
+
+
 // Plug-In defines
 #define PLUGIN_075
 #define PLUGIN_ID_075 75
@@ -241,7 +249,9 @@ boolean Plugin_075(byte function, struct EventStruct *event, String& string)
        SoftSerial = NULL;
      }

-      String log = F("NEXTION075 : serial pin config RX:");
+      String log;
+      log.reserve(80);                                 // Prevent re-allocation
+      log = F("NEXTION075 : serial pin config RX:");
      log += rxPin;
      log += F(", TX:");
      log += txPin;
@@ -313,6 +323,7 @@ boolean Plugin_075(byte function, struct EventStruct *event, String& string)
            RssiIndex = UcTmpString.indexOf(F("RSSIBAR"));  // RSSI bargraph Keyword found, wifi value in dBm.
            if(RssiIndex >= 0) {
              int barVal;
+              newString.reserve(Lenlines+10);               // Prevent re-allocation
              newString = tmpString.substring(0, RssiIndex);
              int nbars = WiFi.RSSI();
              if (nbars < -100 || nbars >= 0)
@@ -345,31 +356,38 @@ boolean Plugin_075(byte function, struct EventStruct *event, String& string)
            }

            sendCommand(newString.c_str(), HwSerial);
-            
-            String log = F("NEXTION075 : Cmd Statement Line-");
-            log += String(x+1);
-            log += F(" Sent: ");
-            log += newString;
-            addLog(LOG_LEVEL_INFO, log);
+            #ifdef DEBUG_LOG 
+              String log;
+              log.reserve(Lenlines+50);                 // Prevent re-allocation
+              log = F("NEXTION075 : Cmd Statement Line-");
+              log += String(x+1);
+              log += F(" Sent: ");
+              log += newString;
+              addLog(LOG_LEVEL_INFO, log);
+            #endif
          }
        }

        // At Interval timer, send idx & value data only if user enabled "values" interval mode.
        if(IncludeValues) {
-/* 
-            String log = F("NEXTION075: Interval values data enabled, resending idx=");
-            log += String(UserVar[event->BaseVarIndex]);
-            log += F(", value=");
-            log += String(UserVar[event->BaseVarIndex+1]);
-            addLog(LOG_LEVEL_INFO, log);
-*/
+            #ifdef DEBUG_LOG
+             String log;
+             log.reserve(120);                          // Prevent re-allocation
+             log = F("NEXTION075: Interval values data enabled, resending idx=");
+             log += String(UserVar[event->BaseVarIndex]);
+             log += F(", value=");
+             log += String(UserVar[event->BaseVarIndex+1]);
+             addLog(LOG_LEVEL_INFO, log);
+            #endif
+
            success = true;
        }
        else {
-/*
-            String log = F("NEXTION075: Interval values data disabled, idx & value not resent");
-            addLog(LOG_LEVEL_INFO, log);
-*/
+            #ifdef DEBUG_LOG
+             String log = F("NEXTION075: Interval values data disabled, idx & value not resent");
+             addLog(LOG_LEVEL_INFO, log);
+            #endif
+
            success = false;
        } 

@@ -386,6 +404,8 @@ boolean Plugin_075(byte function, struct EventStruct *event, String& string)
        
 // Enable addLog() code below to help debug plugin write problems.
 /*
+        String log;
+        log.reserve(140);                               // Prevent re-allocation
        String log = F("Nextion arg0: ");
        log += tmpString; 
        log += F(", TaskDeviceName: ");
@@ -401,11 +421,14 @@ boolean Plugin_075(byte function, struct EventStruct *event, String& string)
            tmpString = string.substring(argIndex + 1);
            sendCommand(tmpString.c_str(), HwSerial);

-            String log = F("NEXTION075 : WRITE, ");
-            log += F("Command is ");
-            log += (tmpString.c_str());
-            addLog(LOG_LEVEL_INFO, log);
-
+            String log;
+            log.reserve(110);                           // Prevent re-allocation
+            log = F("NEXTION075 : WRITE = ");
+            log += tmpString;
+            #ifdef DEBUG_LOG  
+              addLog(LOG_LEVEL_INFO, log);
+            #endif
+            SendStatus(event->Source, log);             // Reply (echo) to sender. This will print message on browser.
            success = true;                             // Set true only if plugin found a command to execute.
        }
        break;
@@ -439,7 +462,6 @@ boolean Plugin_075(byte function, struct EventStruct *event, String& string)
      uint16_t i;
      uint8_t c;
      uint8_t charCount;
-      String log;
      String Vidx;
      String Nvalue;
      String Svalue;
@@ -447,7 +469,7 @@ boolean Plugin_075(byte function, struct EventStruct *event, String& string)
      char __buffer[RXBUFFSZ+1];                        // Staging buffer.
      
      if(rxPin < 0) {
-        String log = F("NEXTION075 : Missing RxD Pin Number, aborted serial receive");
+        String log = F("NEXTION075 : Missing RxD Pin, aborted serial receive");
        addLog(LOG_LEVEL_INFO, log);
        break;
      }
@@ -455,6 +477,8 @@ boolean Plugin_075(byte function, struct EventStruct *event, String& string)
      if(HwSerial == UARTSERIAL) {
        charCount = Serial.available();                 // Prime the Hardware Serial engine.
        if(charCount >= RXBUFFWARN) {                   // ESP8266 has 128 byte circular Rx buffer.
+            String log;
+            log.reserve(70);                           // Prevent re-allocation
            log = F("NEXTION075 : RxD UART Buffer capacity warning,");
            log += String(charCount);
            log += F(" bytes");
@@ -465,6 +489,8 @@ boolean Plugin_075(byte function, struct EventStruct *event, String& string)
        if(SoftSerial == NULL) break;                   // SoftSerial missing, exit.
        charCount = SoftSerial->available();            // Prime the Soft Serial engine.
        if(charCount >= RXBUFFWARN) {
+            String log;
+            log.reserve(70);                           // Prevent re-allocation
            log = F("NEXTION075 : RxD SoftSerial Buffer capacity warning, ");
            log += String(charCount);
            log += F(" bytes");
@@ -495,13 +521,17 @@ boolean Plugin_075(byte function, struct EventStruct *event, String& string)
              UserVar[event->BaseVarIndex + 1] = __buffer[3];
              sendData(event);

-              log = F("NEXTION075 : code: ");
-              log += __buffer[1];
-              log += ",";
-              log += __buffer[2];
-              log += ",";
-              log += __buffer[3];
-              addLog(LOG_LEVEL_INFO, log);
+              #ifdef DEBUG_LOG
+                String log;
+                log.reserve(70);                        // Prevent re-allocation
+                log = F("NEXTION075 : code: ");
+                log += __buffer[1];
+                log += ",";
+                log += __buffer[2];
+                log += ",";
+                log += __buffer[3];
+                addLog(LOG_LEVEL_INFO, log);
+              #endif
            }
          }
        } 
@@ -534,9 +564,14 @@ boolean Plugin_075(byte function, struct EventStruct *event, String& string)
            __buffer[i] = 0x00;
            
            String tmpString = __buffer;
-            log = F("NEXTION075 : code: ");
-            log += tmpString;
-            addLog(LOG_LEVEL_INFO, log);
+
+            #ifdef DEBUG_LOG
+              String log;
+              log.reserve(50);                          // Prevent re-allocation
+              log = F("NEXTION075 : Code = ");
+              log += tmpString;
+              addLog(LOG_LEVEL_INFO, log);
+            #endif

            int argIndex = tmpString.indexOf(F(",i"));
            int argEnd = tmpString.indexOf(',', argIndex + 1);
@@ -568,14 +603,21 @@ boolean Plugin_075(byte function, struct EventStruct *event, String& string)
                UserVar[event->BaseVarIndex+1] = Svalue.toFloat();
                sendData(event);

-                log = F("NEXTION075 : Pipe Command Sent: ");
-                log += __buffer;
-                log += UserVar[event->BaseVarIndex];
+                #ifdef DEBUG_LOG
+                 String log;
+                 log.reserve(80);                       // Prevent re-allocation
+                 log = F("NEXTION075 : Pipe Command Sent: ");
+                 log += __buffer;
+                 log += UserVar[event->BaseVarIndex];
+                 addLog(LOG_LEVEL_INFO, log);
+                #endif
            }
            else {
-                log = F("NEXTION075 : Unknown Pipe Command, skipped");
+                #ifdef DEBUG_LOG
+                 String log = F("NEXTION075 : Unknown Pipe Command, skipped");
+                 addLog(LOG_LEVEL_INFO, log);
+                #endif
            }
-            addLog(LOG_LEVEL_INFO, log);
          }
        }
        if(HwSerial == UARTSERIAL) charCount = Serial.available();
@@ -206,10 +206,25 @@ To create/register a plugin, you have to :
    #define USES_P036   // FrameOLED
    #define USES_P027   // INA219
    #define USES_P028   // BME280
-
-    // TODO : Add list of compatible plugins for ESP32 board.
 #endif

+#ifdef PLUGIN_SET_TEST_ESP32
+    #ifndef ESP32
+        #define ESP32
+    #endif
+    #ifdef ESP8266
+        #undef ESP8266
+    #endif
+//    #define PLUGIN_SET_ONLY_SWITCH
+
+    #define  PLUGIN_SET_TESTING
+    #define  CONTROLLER_SET_STABLE
+    #define  NOTIFIER_SET_STABLE
+    #define  PLUGIN_SET_STABLE     // add stable
+    // See also PLUGIN_SET_TEST_ESP32 section at end,
+    // where incompatible plugins will be disabled.
+    // TODO : Check compatibility of plugins for ESP32 board.
+#endif


 // Generic ------------------------------------
@@ -585,8 +600,22 @@ To create/register a plugin, you have to :
 #ifdef NOTIFIER_SET_EXPERIMENTAL
 #endif

+/******************************************************************************\
+ * Remove incompatible plugins ************************************************
+\******************************************************************************/
+#ifdef PLUGIN_SET_TEST_ESP32
+  #undef USES_P010   // BH1750          (doesn't work yet on ESP32)
+  #undef USES_P049   // MHZ19           (doesn't work yet on ESP32)

+  #undef USES_P052   // SenseAir        (doesn't work yet on ESP32)
+  #undef USES_P053   // PMSx003

+  #undef USES_P056   // SDS011-Dust     (doesn't work yet on ESP32)
+  #undef USES_P065   // DRF0299
+  #undef USES_P071   // Kamstrup401
+  #undef USES_P075   // Nextion
+  #undef USES_P078   // Eastron Modbus Energy meters (doesn't work yet on ESP32)
+#endif


 /******************************************************************************\