chore: `byte to uint8_t`

fix: various fixes
Found by PVS-Studio
2025-12-12 03:04:27 +05:00 · 2025-09-23 04:03:36 +03:00 · 2025-09-23 04:02:40 +03:00 · 2025-09-19 21:14:38 +03:00 · 2025-09-19 21:09:55 +03:00 · 2025-09-19 21:06:17 +03:00
29 changed files with 1239 additions and 187 deletions
--- a/.github/workflows/pio-dependabot.yaml
+++ b/.github/workflows/pio-dependabot.yaml
@@ -15,7 +15,7 @@ jobs:
    name: run PlatformIO Dependabot
    steps:
      - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
      - name: run PlatformIO Dependabot
        uses: peterus/platformio_dependabot@v1.2.0
        with:
--- a/.github/workflows/stale.yaml
+++ b/.github/workflows/stale.yaml
@@ -7,7 +7,7 @@ jobs:
  stale:
    runs-on: ubuntu-latest
    steps:
-      - uses: actions/stale@v9
+      - uses: actions/stale@v10
        with:
          stale-issue-message: >
            This issue is stale because it has been open 15 days with no activity. Remove stale label or comment or this will be closed in 5 days.
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
 .pio
 .vscode
+.PVS-Studio
 build/*
 data/*
 managed_components/*
--- a/README.md
+++ b/README.md
@@ -71,5 +71,10 @@ All available information and instructions can be found in the wiki:
      * [Connection](https://github.com/Laxilef/OTGateway/wiki/OT-adapters#connection)
      * [Leds on board](https://github.com/Laxilef/OTGateway/wiki/OT-adapters#leds-on-board)

-___
-This project is tested with BrowserStack.
+## Gratitude
+* To the developers of the libraries used: [OpenTherm Library](https://github.com/ihormelnyk/opentherm_library), [ESP8266Scheduler](https://github.com/nrwiersma/ESP8266Scheduler), [ArduinoJson](https://github.com/bblanchon/ArduinoJson), [NimBLE-Arduino](https://github.com/h2zero/NimBLE-Arduino), [ArduinoMqttClient](https://github.com/arduino-libraries/ArduinoMqttClient), [ESPTelnet](https://github.com/LennartHennigs/ESPTelnet), [FileData](https://github.com/GyverLibs/FileData), [GyverPID](https://github.com/GyverLibs/GyverPID), [GyverBlinker](https://github.com/GyverLibs/GyverBlinker), [OneWireNg](https://github.com/pstolarz/OneWireNg) & [OneWire](https://github.com/PaulStoffregen/OneWire)
+* To the [PlatformIO](https://platformio.org/) Team
+* To the team and contributors of the [pioarduino](https://github.com/pioarduino/platform-espressif32) project
+* To the [BrowserStack](https://www.browserstack.com/) team. This project is tested with BrowserStack.
+* To the [PVS-Studio](https://pvs-studio.com/pvs-studio/?utm_source=website&utm_medium=github&utm_campaign=open_source) - static analyzer for C, C++, C#, and Java code.
+* And of course to the contributors for their contribution to the development of the project!
--- a/lib/CustomOpenTherm/CustomOpenTherm.h
+++ b/lib/CustomOpenTherm/CustomOpenTherm.h
@@ -4,8 +4,8 @@
 class CustomOpenTherm : public OpenTherm {
 public:
  typedef std::function<void(unsigned int)> DelayCallback;
-  typedef std::function<void(unsigned long, byte)> BeforeSendRequestCallback;
-  typedef std::function<void(unsigned long, unsigned long, OpenThermResponseStatus, byte)> AfterSendRequestCallback;
+  typedef std::function<void(unsigned long, uint8_t)> BeforeSendRequestCallback;
+  typedef std::function<void(unsigned long, unsigned long, OpenThermResponseStatus, uint8_t)> AfterSendRequestCallback;

  CustomOpenTherm(int inPin = 4, int outPin = 5, bool isSlave = false, bool alwaysReceive = false) : OpenTherm(inPin, outPin, isSlave, alwaysReceive) {}
  ~CustomOpenTherm() {}
@@ -106,10 +106,14 @@ public:
    return isValidResponse(response) && isValidResponseId(response, OpenThermMessageID::RemoteRequest);
  }

-  static bool isValidResponseId(unsigned long response, OpenThermMessageID id) {
-    byte responseId = (response >> 16) & 0xFF;
+  static bool isCh2Active(unsigned long response) {
+      return response & 0x20;
+  }

-    return (byte)id == responseId;
+  static bool isValidResponseId(unsigned long response, OpenThermMessageID id) {
+    uint8_t responseId = (response >> 16) & 0xFF;
+
+    return (uint8_t)id == responseId;
  }

  static uint8_t getResponseMessageTypeId(unsigned long response) {
--- a/lib/NetworkUtils/NetworkMgr.h
+++ b/lib/NetworkUtils/NetworkMgr.h
@@ -35,7 +35,7 @@ namespace NetworkUtils {
      return this;
    }

-    NetworkMgr* setApCredentials(const char* ssid, const char* password = nullptr, byte channel = 0) {
+    NetworkMgr* setApCredentials(const char* ssid, const char* password = nullptr, uint8_t channel = 0) {
      this->apName = ssid;
      this->apPassword = password;
      this->apChannel = channel;
@@ -43,7 +43,7 @@ namespace NetworkUtils {
      return this;
    }

-    NetworkMgr* setStaCredentials(const char* ssid = nullptr, const char* password = nullptr, byte channel = 0) {
+    NetworkMgr* setStaCredentials(const char* ssid = nullptr, const char* password = nullptr, uint8_t channel = 0) {
      this->staSsid = ssid;
      this->staPassword = password;
      this->staChannel = channel;
@@ -140,7 +140,7 @@ namespace NetworkUtils {
      return this->staPassword;
    }

-    byte getStaChannel() {
+    uint8_t getStaChannel() {
      return this->staChannel;
    }

@@ -377,7 +377,7 @@ namespace NetworkUtils {
      }
    }

-    static byte rssiToSignalQuality(short int rssi) {
+    static uint8_t rssiToSignalQuality(short int rssi) {
      return constrain(map(rssi, -100, -50, 0, 100), 0, 100);
    }

@@ -397,11 +397,11 @@ namespace NetworkUtils {
    const char* hostname = "esp";
    const char* apName = "ESP";
    const char* apPassword = nullptr;
-    byte apChannel = 1;
+    uint8_t apChannel = 1;

    const char* staSsid = nullptr;
    const char* staPassword = nullptr;
-    byte staChannel = 0;
+    uint8_t staChannel = 0;

    bool useDhcp = true;
    IPAddress staticIp;
--- a/platformio.ini
+++ b/platformio.ini
@@ -14,15 +14,15 @@ extra_configs = secrets.default.ini
 core_dir = .pio

 [env]
-version = 1.5.5
+version = 1.5.6
 framework = arduino
 lib_deps = 
-	bblanchon/ArduinoJson@^7.3.0
+	bblanchon/ArduinoJson@^7.4.2
 	;ihormelnyk/OpenTherm Library@^1.1.5
 	https://github.com/Laxilef/opentherm_library#esp32_timer
 	arduino-libraries/ArduinoMqttClient@^0.1.8
-	lennarthennigs/ESP Telnet@^2.2
-	gyverlibs/FileData@^1.0.2
+	lennarthennigs/ESP Telnet@^2.2.3
+	gyverlibs/FileData@^1.0.3
 	gyverlibs/GyverPID@^3.3.2
 	gyverlibs/GyverBlinker@^1.1.1
 	https://github.com/pstolarz/Arduino-Temperature-Control-Library.git#OneWireNg
@@ -60,10 +60,16 @@ monitor_filters =
 	esp8266_exception_decoder
 board_build.flash_mode = dio
 board_build.filesystem = littlefs
+check_tool = ; pvs-studio
+check_flags =
+;  pvs-studio:
+;    --analysis-mode=4
+;    --exclude-path=./.pio/libdeps

 ; Defaults
 [esp8266_defaults]
 platform = espressif8266@^4.2.1
+platform_packages = ${env.platform_packages}
 lib_deps = 
 	${env.lib_deps}
 	nrwiersma/ESP8266Scheduler@^1.2
@@ -77,6 +83,8 @@ build_flags =
 	;-D PIO_FRAMEWORK_ARDUINO_LWIP2_HIGHER_BANDWIDTH_LOW_FLASH
 	-D PIO_FRAMEWORK_ARDUINO_ESPRESSIF_SDK305
 board_build.ldscript = eagle.flash.4m1m.ld
+check_tool = ${env.check_tool}
+check_flags = ${env.check_flags}

 [esp32_defaults]
 ;platform = espressif32@^6.7
@@ -84,13 +92,13 @@ board_build.ldscript = eagle.flash.4m1m.ld
 ;platform_packages = 
 ;  framework-arduinoespressif32 @ https://github.com/espressif/arduino-esp32.git#3.0.5
 ;  framework-arduinoespressif32-libs @ https://github.com/espressif/esp32-arduino-lib-builder/releases/download/idf-release_v5.1/esp32-arduino-libs-idf-release_v5.1-33fbade6.zip
-platform = https://github.com/pioarduino/platform-espressif32/releases/download/54.03.20/platform-espressif32.zip
-platform_packages =
+platform = https://github.com/pioarduino/platform-espressif32/releases/download/55.03.31/platform-espressif32.zip
+platform_packages = ${env.platform_packages}
 board_build.partitions = esp32_partitions.csv
 lib_deps =
 	${env.lib_deps}
 	laxilef/ESP32Scheduler@^1.0.1
-nimble_lib = h2zero/NimBLE-Arduino@^2.1.0
+nimble_lib = h2zero/NimBLE-Arduino@^2.3.6
 lib_ignore = 
 extra_scripts = 
 	post:tools/esp32.py
@@ -100,11 +108,14 @@ build_flags =
 	${env.build_flags}
 	-D CORE_DEBUG_LEVEL=0
 	-Wl,--wrap=esp_panic_handler
+check_tool = ${env.check_tool}
+check_flags = ${env.check_flags}


 ; Boards
 [env:d1_mini]
 platform = ${esp8266_defaults.platform}
+platform_packages = ${esp8266_defaults.platform_packages}
 board = d1_mini
 lib_deps = ${esp8266_defaults.lib_deps}
 lib_ignore = ${esp8266_defaults.lib_ignore}
@@ -119,9 +130,12 @@ build_flags =
 	-D DEFAULT_SENSOR_INDOOR_GPIO=14
 	-D DEFAULT_STATUS_LED_GPIO=13
 	-D DEFAULT_OT_RX_LED_GPIO=15
+check_tool = ${esp8266_defaults.check_tool}
+check_flags = ${esp8266_defaults.check_flags}

 [env:d1_mini_lite]
 platform = ${esp8266_defaults.platform}
+platform_packages = ${esp8266_defaults.platform_packages}
 board = d1_mini_lite
 lib_deps = ${esp8266_defaults.lib_deps}
 lib_ignore = ${esp8266_defaults.lib_ignore}
@@ -136,9 +150,12 @@ build_flags =
 	-D DEFAULT_SENSOR_INDOOR_GPIO=14
 	-D DEFAULT_STATUS_LED_GPIO=13
 	-D DEFAULT_OT_RX_LED_GPIO=15
+check_tool = ${esp8266_defaults.check_tool}
+check_flags = ${esp8266_defaults.check_flags}

 [env:d1_mini_pro]
 platform = ${esp8266_defaults.platform}
+platform_packages = ${esp8266_defaults.platform_packages}
 board = d1_mini_pro
 lib_deps = ${esp8266_defaults.lib_deps}
 lib_ignore = ${esp8266_defaults.lib_ignore}
@@ -153,9 +170,12 @@ build_flags =
 	-D DEFAULT_SENSOR_INDOOR_GPIO=14
 	-D DEFAULT_STATUS_LED_GPIO=13
 	-D DEFAULT_OT_RX_LED_GPIO=15
+check_tool = ${esp8266_defaults.check_tool}
+check_flags = ${esp8266_defaults.check_flags}

 [env:nodemcu_8266]
 platform = ${esp8266_defaults.platform}
+platform_packages = ${esp8266_defaults.platform_packages}
 board = nodemcuv2
 lib_deps = ${esp8266_defaults.lib_deps}
 lib_ignore = ${esp8266_defaults.lib_ignore}
@@ -170,6 +190,8 @@ build_flags =
 	-D DEFAULT_SENSOR_INDOOR_GPIO=4
 	-D DEFAULT_STATUS_LED_GPIO=2
 	-D DEFAULT_OT_RX_LED_GPIO=16
+check_tool = ${esp8266_defaults.check_tool}
+check_flags = ${esp8266_defaults.check_flags}

 [env:s2_mini]
 platform = ${esp32_defaults.platform}
@@ -192,6 +214,8 @@ build_flags =
 	-D DEFAULT_SENSOR_INDOOR_GPIO=7
 	-D DEFAULT_STATUS_LED_GPIO=11
 	-D DEFAULT_OT_RX_LED_GPIO=12
+check_tool = ${esp32_defaults.check_tool}
+check_flags = ${esp32_defaults.check_flags}

 [env:s3_mini] 
 platform = ${esp32_defaults.platform}
@@ -218,6 +242,8 @@ build_flags =
 	-D DEFAULT_SENSOR_INDOOR_GPIO=12
 	-D DEFAULT_STATUS_LED_GPIO=11
 	-D DEFAULT_OT_RX_LED_GPIO=10
+check_tool = ${esp32_defaults.check_tool}
+check_flags = ${esp32_defaults.check_flags}

 [env:c3_mini] 
 platform = ${esp32_defaults.platform}
@@ -242,6 +268,8 @@ build_flags =
 	-D DEFAULT_SENSOR_INDOOR_GPIO=1
 	-D DEFAULT_STATUS_LED_GPIO=4
 	-D DEFAULT_OT_RX_LED_GPIO=5
+check_tool = ${esp32_defaults.check_tool}
+check_flags = ${esp32_defaults.check_flags}

 [env:nodemcu_32]
 platform = ${esp32_defaults.platform}
@@ -263,6 +291,12 @@ build_flags =
 	-D DEFAULT_SENSOR_INDOOR_GPIO=26
 	-D DEFAULT_STATUS_LED_GPIO=2
 	-D DEFAULT_OT_RX_LED_GPIO=19
+check_tool = ${esp32_defaults.check_tool}
+check_flags = ${esp32_defaults.check_flags}
+
+[env:nodemcu_32_160mhz] 
+extends = env:nodemcu_32 
+board_build.f_cpu = 160000000L ; set frequency to 160MHz

 [env:d1_mini32]
 platform = ${esp32_defaults.platform}
@@ -284,6 +318,8 @@ build_flags =
 	-D DEFAULT_SENSOR_INDOOR_GPIO=18
 	-D DEFAULT_STATUS_LED_GPIO=2
 	-D DEFAULT_OT_RX_LED_GPIO=19
+check_tool = ${esp32_defaults.check_tool}
+check_flags = ${esp32_defaults.check_flags}

 [env:esp32_c6]
 platform = ${esp32_defaults.platform}
@@ -312,6 +348,8 @@ build_flags =
 	-D DEFAULT_SENSOR_INDOOR_GPIO=0
 	-D DEFAULT_STATUS_LED_GPIO=11
 	-D DEFAULT_OT_RX_LED_GPIO=10
+check_tool = ${esp32_defaults.check_tool}
+check_flags = ${esp32_defaults.check_flags}

 [env:otthing] 
 platform = ${esp32_defaults.platform}
@@ -337,3 +375,5 @@ build_flags =
 	-D DEFAULT_STATUS_LED_GPIO=8
 	-D DEFAULT_OT_RX_LED_GPIO=2
 	-D OT_BYPASS_RELAY_GPIO=20
+check_tool = ${esp32_defaults.check_tool}
+check_flags = ${esp32_defaults.check_flags}
--- a/src/HaHelper.h
+++ b/src/HaHelper.h
@@ -3,8 +3,8 @@

 class HaHelper : public HomeAssistantHelper {
 public:
-  static const byte TEMP_SOURCE_HEATING = 0;
-  static const byte TEMP_SOURCE_INDOOR = 1;
+  static const uint8_t TEMP_SOURCE_HEATING = 0;
+  static const uint8_t TEMP_SOURCE_INDOOR = 1;
  static const char AVAILABILITY_OT_CONN[];
  static const char AVAILABILITY_SENSOR_CONN[];

@@ -1170,7 +1170,7 @@ public:
  }


-  bool publishClimateHeating(UnitSystem unit = UnitSystem::METRIC, byte minTemp = 20, byte maxTemp = 90, bool enabledByDefault = true) {
+  bool publishClimateHeating(UnitSystem unit = UnitSystem::METRIC, uint8_t minTemp = 20, uint8_t maxTemp = 90, bool enabledByDefault = true) {
    JsonDocument doc;
    doc[FPSTR(HA_AVAILABILITY)][FPSTR(HA_TOPIC)] = this->statusTopic.c_str();
    doc[FPSTR(HA_ENABLED_BY_DEFAULT)] = enabledByDefault;
@@ -1222,7 +1222,7 @@ public:
    return this->publish(this->makeConfigTopic(FPSTR(HA_ENTITY_CLIMATE), F("heating"), '_').c_str(), doc);
  }

-  bool publishClimateDhw(UnitSystem unit = UnitSystem::METRIC, byte minTemp = 40, byte maxTemp = 60, bool enabledByDefault = true) {
+  bool publishClimateDhw(UnitSystem unit = UnitSystem::METRIC, uint8_t minTemp = 40, uint8_t maxTemp = 60, bool enabledByDefault = true) {
    JsonDocument doc;
    doc[FPSTR(HA_AVAILABILITY)][FPSTR(HA_TOPIC)] = this->statusTopic.c_str();
    doc[FPSTR(HA_ENABLED_BY_DEFAULT)] = enabledByDefault;
--- a/src/MainTask.h
+++ b/src/MainTask.h
@@ -29,6 +29,7 @@ protected:
  enum class PumpStartReason {NONE, HEATING, ANTISTUCK};

  Blinker* blinker = nullptr;
+  unsigned long miscRunned = 0;
  unsigned long lastHeapInfo = 0;
  unsigned int minFreeHeap = 0;
  unsigned int minMaxFreeBlockHeap = 0;
@@ -42,6 +43,8 @@ protected:
  bool telnetStarted = false;
  bool emergencyDetected = false;
  unsigned long emergencyFlipTime = 0;
+  bool freezeDetected = false;
+  unsigned long freezeDetectedTime = 0;

  #if defined(ARDUINO_ARCH_ESP32)
  const char* getTaskName() override {
@@ -150,17 +153,16 @@ protected:

      Sensors::setConnectionStatusByType(Sensors::Type::MANUAL, false, false);
    }
-    this->yield();

-    this->emergency();
+    this->yield();
+    if (this->misc()) {
+      this->yield();
+    }
    this->ledStatus();
-    this->cascadeControl();
-    this->externalPump();
-    this->yield();
-

    // telnet
    if (this->telnetStarted) {
+      this->yield();
      telnetStream->loop();
      this->yield();
    }
@@ -179,14 +181,27 @@ protected:

    // heap info
    this->heap();
+  }

+  bool misc() {
+    if (millis() - this->miscRunned < 1000) {
+      return false;
+    }

-    // restart
+    // restart if required
    if (this->restartSignalReceived && millis() - this->restartSignalReceivedTime > 15000) {
      this->restartSignalReceived = false;

      ESP.restart();
    }
+
+    this->heating();
+    this->emergency();
+    this->cascadeControl();
+    this->externalPump();
+    this->miscRunned = millis();
+    
+    return true;
  }

  void heap() {
@@ -228,6 +243,65 @@ protected:
    }
  }

+  void heating() {
+    // freeze protection
+    if (!settings.heating.enabled) {
+      float lowTemp = 255.0f;
+      uint8_t availableSensors = 0;
+
+      if (Sensors::existsConnectedSensorsByPurpose(Sensors::Purpose::INDOOR_TEMP)) {
+        auto value = Sensors::getMeanValueByPurpose(Sensors::Purpose::INDOOR_TEMP, Sensors::ValueType::PRIMARY);
+        if (value < lowTemp) {
+          lowTemp = value;
+        }
+        
+        availableSensors++;
+      }
+
+      if (Sensors::existsConnectedSensorsByPurpose(Sensors::Purpose::HEATING_TEMP)) {
+        auto value = Sensors::getMeanValueByPurpose(Sensors::Purpose::HEATING_TEMP, Sensors::ValueType::PRIMARY);
+        if (value < lowTemp) {
+          lowTemp = value;
+        }
+        
+        availableSensors++;
+      }
+
+      if (Sensors::existsConnectedSensorsByPurpose(Sensors::Purpose::HEATING_RETURN_TEMP)) {
+        auto value = Sensors::getMeanValueByPurpose(Sensors::Purpose::HEATING_RETURN_TEMP, Sensors::ValueType::PRIMARY);
+        if (value < lowTemp) {
+          lowTemp = value;
+        }
+
+        availableSensors++;
+      }
+
+      if (availableSensors && lowTemp <= settings.heating.freezeProtection.lowTemp) {
+        if (!this->freezeDetected) {
+          this->freezeDetected = true;
+          this->freezeDetectedTime = millis();
+
+        } else if (millis() - this->freezeDetectedTime > (settings.heating.freezeProtection.thresholdTime * 1000)) {
+          this->freezeDetected = false;
+          settings.heating.enabled = true;
+          fsSettings.update();
+
+          Log.sinfoln(
+            FPSTR(L_MAIN),
+            F("Heating turned on by freeze protection, current low temp: %.2f, threshold: %hhu"),
+            lowTemp, settings.heating.freezeProtection.lowTemp
+          );
+        }
+
+      } else if (this->freezeDetected) {
+        this->freezeDetected = false;
+      }
+
+    } else if (this->freezeDetected) {
+      this->freezeDetected = false;
+    }
+  }
+
  void emergency() {
    // flags
    uint8_t emergencyFlags = 0b00000000;
--- a/src/MqttTask.h
+++ b/src/MqttTask.h
@@ -557,7 +557,7 @@ protected:
  }

  bool publishNonStaticHaEntities(bool force = false) {
-    static byte _heatingMinTemp, _heatingMaxTemp, _dhwMinTemp, _dhwMaxTemp = 0;
+    static uint8_t _heatingMinTemp, _heatingMaxTemp, _dhwMinTemp, _dhwMaxTemp = 0;
    static bool _indoorTempControl, _dhwSupport = false;

    bool published = false;
--- a/src/OpenThermTask.h
+++ b/src/OpenThermTask.h
@@ -19,8 +19,8 @@ protected:

  CustomOpenTherm* instance = nullptr;
  unsigned long instanceCreatedTime = 0;
-  byte instanceInGpio = 0;
-  byte instanceOutGpio = 0;
+  uint8_t instanceInGpio = 0;
+  uint8_t instanceOutGpio = 0;
  bool initialized = false;
  unsigned long connectedTime = 0;
  unsigned long disconnectedTime = 0;
@@ -31,7 +31,7 @@ protected:
  unsigned long heatingSetTempTime = 0;
  unsigned long dhwSetTempTime = 0;
  unsigned long ch2SetTempTime = 0;
-  byte configuredRxLedGpio = GPIO_IS_NOT_CONFIGURED;
+  uint8_t configuredRxLedGpio = GPIO_IS_NOT_CONFIGURED;

  #if defined(ARDUINO_ARCH_ESP32)
  const char* getTaskName() override {
@@ -90,7 +90,7 @@ protected:

    Log.sinfoln(FPSTR(L_OT), F("Started. GPIO IN: %hhu, GPIO OUT: %hhu"), settings.opentherm.inGpio, settings.opentherm.outGpio);

-    this->instance->setAfterSendRequestCallback([this](unsigned long request, unsigned long response, OpenThermResponseStatus status, byte attempt) {
+    this->instance->setAfterSendRequestCallback([this](unsigned long request, unsigned long response, OpenThermResponseStatus status, uint8_t attempt) {
      Log.sverboseln(
        FPSTR(L_OT),
        F("ID: %4d   Request: %8lx   Response: %8lx   Msg type: %s   Attempt: %2d   Status: %s"),
@@ -169,12 +169,15 @@ protected:

    // Heating settings
    vars.master.heating.enabled = this->isReady()
-      && (settings.heating.enabled || vars.emergency.state) 
+      && settings.heating.enabled
      && vars.cascadeControl.input 
-      && !vars.master.heating.blocking;
+      && !vars.master.heating.blocking
+      && !vars.master.heating.overheat;

    // DHW settings
-    vars.master.dhw.enabled = settings.opentherm.options.dhwSupport && settings.dhw.enabled;
+    vars.master.dhw.enabled = settings.opentherm.options.dhwSupport 
+      && settings.dhw.enabled 
+      && !vars.master.dhw.overheat;
    vars.master.dhw.targetTemp = settings.dhw.target;

    // CH2 settings
@@ -205,6 +208,12 @@ protected:
      summerWinterMode = vars.master.heating.enabled == summerWinterMode;
    }

+    // DHW blocking
+    bool dhwBlocking = settings.opentherm.options.dhwBlocking;
+    if (settings.opentherm.options.dhwStateAsDhwBlocking) {
+      dhwBlocking = vars.master.dhw.enabled == dhwBlocking;
+    }
+
    unsigned long response = this->instance->setBoilerStatus(
      vars.master.heating.enabled,
      vars.master.dhw.enabled,
@@ -212,7 +221,7 @@ protected:
      settings.opentherm.options.nativeHeatingControl,
      vars.master.ch2.enabled,
      summerWinterMode,
-      settings.opentherm.options.dhwBlocking,
+      dhwBlocking,
      statusLb
    );

@@ -228,6 +237,7 @@ protected:
      vars.slave.dhw.active = settings.opentherm.options.dhwSupport ? CustomOpenTherm::isHotWaterActive(response) : false;
      vars.slave.flame = CustomOpenTherm::isFlameOn(response);
      vars.slave.cooling = CustomOpenTherm::isCoolingActive(response);
+      vars.slave.ch2.active = CustomOpenTherm::isCh2Active(response);
      vars.slave.fault.active = CustomOpenTherm::isFault(response);

      if (!settings.opentherm.options.ignoreDiagState) {
@@ -238,9 +248,9 @@ protected:
      }
  
      Log.snoticeln(
-        FPSTR(L_OT), F("Received boiler status. Heating: %hhu; DHW: %hhu; flame: %hhu; cooling: %hhu; fault: %hhu; diag: %hhu"),
+        FPSTR(L_OT), F("Received boiler status. Heating: %hhu; DHW: %hhu; flame: %hhu; cooling: %hhu; channel 2: %hhu; fault: %hhu; diag: %hhu"),
        vars.slave.heating.active, vars.slave.dhw.active,
-        vars.slave.flame, vars.slave.cooling, vars.slave.fault.active, vars.slave.diag.active
+        vars.slave.flame, vars.slave.cooling, vars.slave.ch2.active, vars.slave.fault.active, vars.slave.diag.active
      );
    }

@@ -1307,6 +1317,84 @@ protected:
        }
      }
    }
+
+
+    // Heating overheat control
+    if (settings.heating.overheatProtection.highTemp > 0 && settings.heating.overheatProtection.lowTemp > 0) {
+      float highTemp = convertTemp(
+        max({
+          vars.slave.heating.currentTemp,
+          vars.slave.heating.returnTemp,
+          vars.slave.heatExchangerTemp
+        }),
+        settings.opentherm.unitSystem,
+        settings.system.unitSystem
+      );
+
+      if (vars.master.heating.overheat) {
+        if ((float) settings.heating.overheatProtection.lowTemp - highTemp + 0.0001f >= 0.0f) {
+          vars.master.heating.overheat = false;
+
+          Log.sinfoln(
+            FPSTR(L_OT_HEATING), F("Overheating not detected. Current high temp: %.2f, threshold (low): %hhu"),
+            highTemp, settings.heating.overheatProtection.lowTemp
+          );
+        }
+
+      } else if (vars.slave.heating.active) {
+        if (highTemp - (float) settings.heating.overheatProtection.highTemp + 0.0001f >= 0.0f) {
+          vars.master.heating.overheat = true;
+
+          Log.swarningln(
+            FPSTR(L_OT_HEATING), F("Overheating detected! Current high temp: %.2f, threshold (high): %hhu"),
+            highTemp, settings.heating.overheatProtection.highTemp
+          );
+        }
+      }
+
+    } else if (vars.master.heating.overheat) {
+      vars.master.heating.overheat = false;
+    }
+
+    // DHW overheat control
+    if (settings.dhw.overheatProtection.highTemp > 0 && settings.dhw.overheatProtection.lowTemp > 0) {
+      float highTemp = convertTemp(
+        max({
+          vars.slave.heating.currentTemp,
+          vars.slave.heating.returnTemp,
+          vars.slave.heatExchangerTemp,
+          vars.slave.dhw.currentTemp,
+          vars.slave.dhw.currentTemp2,
+          vars.slave.dhw.returnTemp
+        }),
+        settings.opentherm.unitSystem,
+        settings.system.unitSystem
+      );
+
+      if (vars.master.dhw.overheat) {
+        if ((float) settings.dhw.overheatProtection.lowTemp - highTemp + 0.0001f >= 0.0f) {
+          vars.master.dhw.overheat = false;
+
+          Log.sinfoln(
+            FPSTR(L_OT_DHW), F("Overheating not detected. Current high temp: %.2f, threshold (low): %hhu"),
+            highTemp, settings.dhw.overheatProtection.lowTemp
+          );
+        }
+
+      } else if (vars.slave.dhw.active) {
+        if (highTemp - (float) settings.dhw.overheatProtection.highTemp + 0.0001f >= 0.0f) {
+          vars.master.dhw.overheat = true;
+
+          Log.swarningln(
+            FPSTR(L_OT_DHW), F("Overheating detected! Current high temp: %.2f, threshold (high): %hhu"),
+            highTemp, settings.dhw.overheatProtection.highTemp
+          );
+        }
+      }
+
+    } else if (vars.master.dhw.overheat) {
+      vars.master.dhw.overheat = false;
+    }
  }

  void initialize() {
--- a/src/RegulatorTask.h
+++ b/src/RegulatorTask.h
@@ -213,7 +213,8 @@ protected:
        }*/

        float error = pidRegulator.setpoint - pidRegulator.input;
-        bool hasDeadband = (error > -(settings.pid.deadband.thresholdHigh))
+        bool hasDeadband = settings.pid.deadband.enabled 
+          && (error > -(settings.pid.deadband.thresholdHigh))
          && (error < settings.pid.deadband.thresholdLow);

        if (hasDeadband) {
--- a/src/Sensors.h
+++ b/src/Sensors.h
@@ -138,7 +138,7 @@ public:
    }

    uint8_t amount = 0;
-    for (uint8_t id = 0; id < getMaxSensorId(); id++) {
+    for (uint8_t id = 0; id <= getMaxSensorId(); id++) {
      if (settings[id].type == type && (!onlyEnabled || settings[id].enabled)) {
        amount++;
      }
@@ -152,7 +152,7 @@ public:
      return 0;
    }

-    for (uint8_t id = 0; id < getMaxSensorId(); id++) {
+    for (uint8_t id = 0; id <= getMaxSensorId(); id++) {
      if (strcmp(settings[id].name, name) == 0) {
        return id;
      }
@@ -167,7 +167,7 @@ public:
    }

    String refObjectId;
-    for (uint8_t id = 0; id < getMaxSensorId(); id++) {
+    for (uint8_t id = 0; id <= getMaxSensorId(); id++) {
      Sensors::makeObjectId(refObjectId, settings[id].name);
      if (refObjectId.equals(objectId)) {
        return id;
@@ -247,7 +247,7 @@ public:
    uint8_t updated = 0;
    
    // read sensors data for current instance
-    for (uint8_t sensorId = 0; sensorId < getMaxSensorId(); sensorId++) {
+    for (uint8_t sensorId = 0; sensorId <= getMaxSensorId(); sensorId++) {
      auto& sSensor = settings[sensorId];
      
      // only target & valid sensors
@@ -311,7 +311,7 @@ public:
    uint8_t updated = 0;
    
    // read sensors data for current instance
-    for (uint8_t sensorId = 0; sensorId < getMaxSensorId(); sensorId++) {
+    for (uint8_t sensorId = 0; sensorId <= getMaxSensorId(); sensorId++) {
      auto& sSensor = settings[sensorId];
      
      // only target & valid sensors
@@ -334,13 +334,13 @@ public:

    uint8_t valueId = (uint8_t) valueType;
    if (!isValidValueId(valueId)) {
-      return false;
+      return 0;
    }
    
    float value = 0.0f;
    uint8_t amount = 0;

-    for (uint8_t id = 0; id < getMaxSensorId(); id++) {
+    for (uint8_t id = 0; id <= getMaxSensorId(); id++) {
      auto& sSensor = settings[id];
      auto& rSensor = results[id];

@@ -366,7 +366,7 @@ public:
      return 0;
    }

-    for (uint8_t id = 0; id < getMaxSensorId(); id++) {
+    for (uint8_t id = 0; id <= getMaxSensorId(); id++) {
      if (settings[id].purpose == purpose && results[id].connected) {
        return true;
      }
--- a/src/SensorsTask.h
+++ b/src/SensorsTask.h
@@ -385,7 +385,7 @@ protected:
        continue;
      }

-      const float sensorResistance = value > 0.001f
+      const float sensorResistance = value > 1
        ? DEFAULT_NTC_REF_RESISTANCE / (DEFAULT_NTC_VREF / (float) value - 1.0f)
        : 0.0f;
      const float rawTemp = 1.0f / (
@@ -577,7 +577,7 @@ protected:

  bool subscribeToBleDevice(const uint8_t sensorId, NimBLEClient* pClient) {
    auto& sSensor = Sensors::settings[sensorId];
-    auto pAddress = pClient->getPeerAddress().toString().c_str();
+    auto pAddress = pClient->getPeerAddress().toString();
    
    NimBLERemoteService* pService = nullptr;
    NimBLERemoteCharacteristic* pChar = nullptr;
@@ -588,13 +588,13 @@ protected:
    if (!pService) {
      Log.straceln(
        FPSTR(L_SENSORS_BLE), F("Sensor #%hhu '%s': failed to find env service (%s) on device %s"),
-        sensorId, sSensor.name, serviceUuid.toString().c_str(), pAddress
+        sensorId, sSensor.name, serviceUuid.toString().c_str(), pAddress.c_str()
      );

    } else {
      Log.straceln(
        FPSTR(L_SENSORS_BLE), F("Sensor #%hhu '%s': found env service (%s) on device %s"),
-        sensorId, sSensor.name, serviceUuid.toString().c_str(), pAddress
+        sensorId, sSensor.name, serviceUuid.toString().c_str(), pAddress.c_str()
      );

      // 0x2A6E - Notify temperature x0.01C (pvvx)
@@ -606,7 +606,7 @@ protected:
        if (pChar && (pChar->canNotify() || pChar->canIndicate())) {
          Log.straceln(
            FPSTR(L_SENSORS_BLE), F("Sensor #%hhu '%s': found temp char (%s) in env service on device %s"),
-            sensorId, sSensor.name, charUuid.toString().c_str(), pAddress
+            sensorId, sSensor.name, charUuid.toString().c_str(), pAddress.c_str()
          );

          pChar->unsubscribe();
@@ -661,14 +661,14 @@ protected:
            Log.straceln(
              FPSTR(L_SENSORS_BLE), F("Sensor #%hhu '%s': subscribed to temp char (%s) in env service on device %s"),
              sensorId, sSensor.name,
-              charUuid.toString().c_str(), pAddress
+              charUuid.toString().c_str(), pAddress.c_str()
            );

          } else {
            Log.swarningln(
              FPSTR(L_SENSORS_BLE), F("Sensor #%hhu '%s': failed to subscribe to temp char (%s) in env service on device %s"),
              sensorId, sSensor.name,
-              charUuid.toString().c_str(), pAddress
+              charUuid.toString().c_str(), pAddress.c_str()
            );
          }
        }
@@ -683,7 +683,7 @@ protected:
        if (pChar && (pChar->canNotify() || pChar->canIndicate())) {
          Log.straceln(
            FPSTR(L_SENSORS_BLE), F("Sensor #%hhu '%s': found temp char (%s) in env service on device %s"),
-            sensorId, sSensor.name, charUuid.toString().c_str(), pAddress
+            sensorId, sSensor.name, charUuid.toString().c_str(), pAddress.c_str()
          );

          pChar->unsubscribe();
@@ -738,14 +738,14 @@ protected:
            Log.straceln(
              FPSTR(L_SENSORS_BLE), F("Sensor #%hhu '%s': subscribed to temp char (%s) in env service on device %s"),
              sensorId, sSensor.name,
-              charUuid.toString().c_str(), pAddress
+              charUuid.toString().c_str(), pAddress.c_str()
            );

          } else {
            Log.swarningln(
              FPSTR(L_SENSORS_BLE), F("Sensor #%hhu '%s': failed to subscribe to temp char (%s) in env service on device %s"),
              sensorId, sSensor.name,
-              charUuid.toString().c_str(), pAddress
+              charUuid.toString().c_str(), pAddress.c_str()
            );
          }
        }
@@ -754,7 +754,7 @@ protected:
      if (!tempNotifyCreated) {
        Log.swarningln(
          FPSTR(L_SENSORS_BLE), F("Sensor #%hhu '%s': not found supported temp chars in env service on device %s"),
-          sensorId, sSensor.name, pAddress
+          sensorId, sSensor.name, pAddress.c_str()
        );

        pClient->disconnect();
@@ -772,7 +772,7 @@ protected:
          if (pChar && (pChar->canNotify() || pChar->canIndicate())) {
            Log.straceln(
              FPSTR(L_SENSORS_BLE), F("Sensor #%hhu '%s': found humidity char (%s) in env service on device %s"),
-              sensorId, sSensor.name, charUuid.toString().c_str(), pAddress
+              sensorId, sSensor.name, charUuid.toString().c_str(), pAddress.c_str()
            );

            pChar->unsubscribe();
@@ -827,14 +827,14 @@ protected:
              Log.straceln(
                FPSTR(L_SENSORS_BLE), F("Sensor #%hhu '%s': subscribed to humidity char (%s) in env service on device %s"),
                sensorId, sSensor.name,
-                charUuid.toString().c_str(), pAddress
+                charUuid.toString().c_str(), pAddress.c_str()
              );

            } else {
              Log.swarningln(
                FPSTR(L_SENSORS_BLE), F("Sensor #%hhu '%s': failed to subscribe to humidity char (%s) in env service on device %s"),
                sensorId, sSensor.name,
-                charUuid.toString().c_str(), pAddress
+                charUuid.toString().c_str(), pAddress.c_str()
              );
            }
          }
@@ -843,7 +843,7 @@ protected:
        if (!humidityNotifyCreated) {
          Log.swarningln(
            FPSTR(L_SENSORS_BLE), F("Sensor #%hhu '%s': not found supported humidity chars in env service on device %s"),
-            sensorId, sSensor.name, pAddress
+            sensorId, sSensor.name, pAddress.c_str()
          );
        }
      }
@@ -857,13 +857,13 @@ protected:
      if (!pService) {
        Log.straceln(
          FPSTR(L_SENSORS_BLE), F("Sensor #%hhu '%s': failed to find battery service (%s) on device %s"),
-          sensorId, sSensor.name, serviceUuid.toString().c_str(), pAddress
+          sensorId, sSensor.name, serviceUuid.toString().c_str(), pAddress.c_str()
        );

      } else {
        Log.straceln(
          FPSTR(L_SENSORS_BLE), F("Sensor #%hhu '%s': found battery service (%s) on device %s"),
-          sensorId, sSensor.name, serviceUuid.toString().c_str(), pAddress
+          sensorId, sSensor.name, serviceUuid.toString().c_str(), pAddress.c_str()
        );

        // 0x2A19 - Notify the battery charge level 0..99% (pvvx)
@@ -875,7 +875,7 @@ protected:
          if (pChar && (pChar->canNotify() || pChar->canIndicate())) {
            Log.straceln(
              FPSTR(L_SENSORS_BLE), F("Sensor #%hhu '%s': found battery char (%s) in battery service on device %s"),
-              sensorId, sSensor.name, charUuid.toString().c_str(), pAddress
+              sensorId, sSensor.name, charUuid.toString().c_str(), pAddress.c_str()
            );

            pChar->unsubscribe();
@@ -930,14 +930,14 @@ protected:
              Log.straceln(
                FPSTR(L_SENSORS_BLE), F("Sensor #%hhu '%s': subscribed to battery char (%s) in battery service on device %s"),
                sensorId, sSensor.name,
-                charUuid.toString().c_str(), pAddress
+                charUuid.toString().c_str(), pAddress.c_str()
              );

            } else {
              Log.swarningln(
                FPSTR(L_SENSORS_BLE), F("Sensor #%hhu '%s': failed to subscribe to battery char (%s) in battery service on device %s"),
                sensorId, sSensor.name,
-                charUuid.toString().c_str(), pAddress
+                charUuid.toString().c_str(), pAddress.c_str()
              );
            }
          }
@@ -946,7 +946,7 @@ protected:
        if (!batteryNotifyCreated) {
          Log.swarningln(
            FPSTR(L_SENSORS_BLE), F("Sensor #%hhu '%s': not found supported battery chars in battery service on device %s"),
-            sensorId, sSensor.name, pAddress
+            sensorId, sSensor.name, pAddress.c_str()
          );
        }
      }
--- a/src/Settings.h
+++ b/src/Settings.h
@@ -12,13 +12,13 @@ struct NetworkSettings {
  struct {
    char ssid[33] = DEFAULT_AP_SSID;
    char password[65] = DEFAULT_AP_PASSWORD;
-    byte channel = 6;
+    uint8_t channel = 6;
  } ap;

  struct {
    char ssid[33] = DEFAULT_STA_SSID;
    char password[65] = DEFAULT_STA_PASSWORD;
-    byte channel = 0;
+    uint8_t channel = 0;
  } sta;
 } networkSettings;

@@ -42,7 +42,7 @@ struct Settings {
    } ntp;

    UnitSystem unitSystem = UnitSystem::METRIC;
-    byte statusLedGpio = DEFAULT_STATUS_LED_GPIO;
+    uint8_t statusLedGpio = DEFAULT_STATUS_LED_GPIO;
  } system;

  struct {
@@ -54,9 +54,9 @@ struct Settings {

  struct {
    UnitSystem unitSystem = UnitSystem::METRIC;
-    byte inGpio = DEFAULT_OT_IN_GPIO;
-    byte outGpio = DEFAULT_OT_OUT_GPIO;
-    byte rxLedGpio = DEFAULT_OT_RX_LED_GPIO;
+    uint8_t inGpio = DEFAULT_OT_IN_GPIO;
+    uint8_t outGpio = DEFAULT_OT_OUT_GPIO;
+    uint8_t rxLedGpio = DEFAULT_OT_RX_LED_GPIO;
    uint8_t memberId = 0;
    uint8_t flags = 0;
    float minPower = 0.0f;
@@ -71,6 +71,7 @@ struct Settings {
      bool heatingToCh2 = false;
      bool dhwToCh2 = false;
      bool dhwBlocking = false;
+      bool dhwStateAsDhwBlocking = false;
      bool maxTempSyncWithTargetTemp = true;
      bool getMinMaxTemp = true;
      bool ignoreDiagState = false;
@@ -104,17 +105,32 @@ struct Settings {
    float target = DEFAULT_HEATING_TARGET_TEMP;
    float hysteresis = 0.5f;
    float turboFactor = 7.5f;
-    byte minTemp = DEFAULT_HEATING_MIN_TEMP;
-    byte maxTemp = DEFAULT_HEATING_MAX_TEMP;
+    uint8_t minTemp = DEFAULT_HEATING_MIN_TEMP;
+    uint8_t maxTemp = DEFAULT_HEATING_MAX_TEMP;
    uint8_t maxModulation = 100;
+
+    struct {
+      uint8_t highTemp = 95;
+      uint8_t lowTemp = 90;
+    } overheatProtection;
+
+    struct {
+      uint8_t lowTemp = 10;
+      unsigned short thresholdTime = 600;
+    } freezeProtection;
  } heating;

  struct {
    bool enabled = true;
    float target = DEFAULT_DHW_TARGET_TEMP;
-    byte minTemp = DEFAULT_DHW_MIN_TEMP;
-    byte maxTemp = DEFAULT_DHW_MAX_TEMP;
+    uint8_t minTemp = DEFAULT_DHW_MIN_TEMP;
+    uint8_t maxTemp = DEFAULT_DHW_MAX_TEMP;
    uint8_t maxModulation = 100;
+    
+    struct {
+      uint8_t highTemp = 95;
+      uint8_t lowTemp = 90;
+    } overheatProtection;
  } dhw;

  struct {
@@ -145,7 +161,7 @@ struct Settings {

  struct {
    bool use = false;
-    byte gpio = DEFAULT_EXT_PUMP_GPIO;
+    uint8_t gpio = DEFAULT_EXT_PUMP_GPIO;
    unsigned short postCirculationTime = 600;
    unsigned int antiStuckInterval = 2592000;
    unsigned short antiStuckTime = 300;
@@ -154,15 +170,15 @@ struct Settings {
  struct {
    struct {
      bool enabled = false;
-      byte gpio = GPIO_IS_NOT_CONFIGURED;
-      byte invertState = false;
+      uint8_t gpio = GPIO_IS_NOT_CONFIGURED;
+      bool invertState = false;
      unsigned short thresholdTime = 60;
    } input;

    struct {
      bool enabled = false;
-      byte gpio = GPIO_IS_NOT_CONFIGURED;
-      byte invertState = false;
+      uint8_t gpio = GPIO_IS_NOT_CONFIGURED;
+      bool invertState = false;
      unsigned short thresholdTime = 60;
      bool onFault = true;
      bool onLossConnection = true;
@@ -279,6 +295,7 @@ struct Variables {
      bool blocking = false;
      bool enabled = false;
      bool indoorTempControl = false;
+      bool overheat = false;
      float setpointTemp = 0.0f;
      float targetTemp = 0.0f;
      float currentTemp = 0.0f;
@@ -291,6 +308,7 @@ struct Variables {

    struct {
      bool enabled = false;
+      bool overheat = false;
      float targetTemp = 0.0f;
      float currentTemp = 0.0f;
      float returnTemp = 0.0f;
@@ -390,6 +408,7 @@ struct Variables {
    } dhw;

    struct {
+      bool active = false;
      bool enabled = false;
      float targetTemp = 0.0f;
      float currentTemp = 0.0f;
--- a/src/strings.h
+++ b/src/strings.h
@@ -68,6 +68,7 @@ const char S_DATE[]                                 PROGMEM = "date";
 const char S_DEADBAND[]                             PROGMEM = "deadband";
 const char S_DHW[]                                  PROGMEM = "dhw";
 const char S_DHW_BLOCKING[]                         PROGMEM = "dhwBlocking";
+const char S_DHW_STATE_AS_DHW_BLOCKING[]            PROGMEM = "dhwStateAsDhwBlocking";
 const char S_DHW_SUPPORT[]                          PROGMEM = "dhwSupport";
 const char S_DHW_TO_CH2[]                           PROGMEM = "dhwToCh2";
 const char S_DIAG[]                                 PROGMEM = "diag";
@@ -83,6 +84,7 @@ const char S_EQUITHERM[]                            PROGMEM = "equitherm";
 const char S_EXTERNAL_PUMP[]                        PROGMEM = "externalPump";
 const char S_FACTOR[]                               PROGMEM = "factor";
 const char S_FAULT[]                                PROGMEM = "fault";
+const char S_FREEZE_PROTECTION[]                    PROGMEM = "freezeProtection";
 const char S_FILTERING[]                            PROGMEM = "filtering";
 const char S_FILTERING_FACTOR[]                     PROGMEM = "filteringFactor";
 const char S_FLAGS[]                                PROGMEM = "flags";
@@ -98,6 +100,7 @@ const char S_HEATING[]                              PROGMEM = "heating";
 const char S_HEATING_TO_CH2[]                       PROGMEM = "heatingToCh2";
 const char S_HEATING_STATE_TO_SUMMER_WINTER_MODE[]  PROGMEM = "heatingStateToSummerWinterMode";
 const char S_HIDDEN[]                               PROGMEM = "hidden";
+const char S_HIGH_TEMP[]                            PROGMEM = "highTemp";
 const char S_HOME_ASSISTANT_DISCOVERY[]             PROGMEM = "homeAssistantDiscovery";
 const char S_HOSTNAME[]                             PROGMEM = "hostname";
 const char S_HUMIDITY[]                             PROGMEM = "humidity";
@@ -117,6 +120,7 @@ const char S_I_MULTIPLIER[]                         PROGMEM = "i_multiplier";
 const char S_K_FACTOR[]                             PROGMEM = "k_factor";
 const char S_LOGIN[]                                PROGMEM = "login";
 const char S_LOG_LEVEL[]                            PROGMEM = "logLevel";
+const char S_LOW_TEMP[]                             PROGMEM = "lowTemp";
 const char S_MAC[]                                  PROGMEM = "mac";
 const char S_MASTER[]                               PROGMEM = "master";
 const char S_MAX[]                                  PROGMEM = "max";
@@ -149,6 +153,8 @@ const char S_OPTIONS[]                              PROGMEM = "options";
 const char S_OUTDOOR_TEMP[]                         PROGMEM = "outdoorTemp";
 const char S_OUT_GPIO[]                             PROGMEM = "outGpio";
 const char S_OUTPUT[]                               PROGMEM = "output";
+const char S_OVERHEAT[]                             PROGMEM = "overheat";
+const char S_OVERHEAT_PROTECTION[]                  PROGMEM = "overheatProtection";
 const char S_PASSWORD[]                             PROGMEM = "password";
 const char S_PID[]                                  PROGMEM = "pid";
 const char S_PORT[]                                 PROGMEM = "port";
--- a/src/utils.h
+++ b/src/utils.h
@@ -72,7 +72,7 @@ time_t mkgmtime(const struct tm *ptm) {

 inline bool isDigit(const char* ptr) {
  char* endPtr;
-  strtol(ptr, &endPtr, 10);
+  auto tmp = strtol(ptr, &endPtr, 10);
  return *endPtr == 0;
 }

@@ -461,6 +461,7 @@ void settingsToJson(const Settings& src, JsonVariant dst, bool safe = false) {
    otOptions[FPSTR(S_HEATING_TO_CH2)] = src.opentherm.options.heatingToCh2;
    otOptions[FPSTR(S_DHW_TO_CH2)] = src.opentherm.options.dhwToCh2;
    otOptions[FPSTR(S_DHW_BLOCKING)] = src.opentherm.options.dhwBlocking;
+    otOptions[FPSTR(S_DHW_STATE_AS_DHW_BLOCKING)] = src.opentherm.options.dhwStateAsDhwBlocking;
    otOptions[FPSTR(S_MAX_TEMP_SYNC_WITH_TARGET_TEMP)] = src.opentherm.options.maxTempSyncWithTargetTemp;
    otOptions[FPSTR(S_GET_MIN_MAX_TEMP)] = src.opentherm.options.getMinMaxTemp;
    otOptions[FPSTR(S_IGNORE_DIAG_STATE)] = src.opentherm.options.ignoreDiagState;
@@ -495,6 +496,14 @@ void settingsToJson(const Settings& src, JsonVariant dst, bool safe = false) {
  heating[FPSTR(S_MAX_TEMP)] = src.heating.maxTemp;
  heating[FPSTR(S_MAX_MODULATION)] = src.heating.maxModulation;

+  auto heatingOverheatProtection = heating[FPSTR(S_OVERHEAT_PROTECTION)].to<JsonObject>();
+  heatingOverheatProtection[FPSTR(S_HIGH_TEMP)] = src.heating.overheatProtection.highTemp;
+  heatingOverheatProtection[FPSTR(S_LOW_TEMP)] = src.heating.overheatProtection.lowTemp;
+
+  auto freezeProtection = heating[FPSTR(S_FREEZE_PROTECTION)].to<JsonObject>();
+  freezeProtection[FPSTR(S_LOW_TEMP)] = src.heating.freezeProtection.lowTemp;
+  freezeProtection[FPSTR(S_THRESHOLD_TIME)] = src.heating.freezeProtection.thresholdTime;
+
  auto dhw = dst[FPSTR(S_DHW)].to<JsonObject>();
  dhw[FPSTR(S_ENABLED)] = src.dhw.enabled;
  dhw[FPSTR(S_TARGET)] = roundf(src.dhw.target, 1);
@@ -502,6 +511,10 @@ void settingsToJson(const Settings& src, JsonVariant dst, bool safe = false) {
  dhw[FPSTR(S_MAX_TEMP)] = src.dhw.maxTemp;
  dhw[FPSTR(S_MAX_MODULATION)] = src.dhw.maxModulation;

+  auto dhwOverheatProtection = dhw[FPSTR(S_OVERHEAT_PROTECTION)].to<JsonObject>();
+  dhwOverheatProtection[FPSTR(S_HIGH_TEMP)] = src.dhw.overheatProtection.highTemp;
+  dhwOverheatProtection[FPSTR(S_LOW_TEMP)] = src.dhw.overheatProtection.lowTemp;
+
  auto equitherm = dst[FPSTR(S_EQUITHERM)].to<JsonObject>();
  equitherm[FPSTR(S_ENABLED)] = src.equitherm.enabled;
  equitherm[FPSTR(S_N_FACTOR)] = roundf(src.equitherm.n_factor, 3);
@@ -923,6 +936,15 @@ bool jsonToSettings(const JsonVariantConst src, Settings& dst, bool safe = false
      }
    }

+    if (src[FPSTR(S_OPENTHERM)][FPSTR(S_OPTIONS)][FPSTR(S_DHW_STATE_AS_DHW_BLOCKING)].is<bool>()) {
+      bool value = src[FPSTR(S_OPENTHERM)][FPSTR(S_OPTIONS)][FPSTR(S_DHW_STATE_AS_DHW_BLOCKING)].as<bool>();
+
+      if (value != dst.opentherm.options.dhwStateAsDhwBlocking) {
+        dst.opentherm.options.dhwStateAsDhwBlocking = value;
+        changed = true;
+      }
+    }
+
    if (src[FPSTR(S_OPENTHERM)][FPSTR(S_OPTIONS)][FPSTR(S_MAX_TEMP_SYNC_WITH_TARGET_TEMP)].is<bool>()) {
      bool value = src[FPSTR(S_OPENTHERM)][FPSTR(S_OPTIONS)][FPSTR(S_MAX_TEMP_SYNC_WITH_TARGET_TEMP)].as<bool>();

@@ -1302,7 +1324,7 @@ bool jsonToSettings(const JsonVariantConst src, Settings& dst, bool safe = false
  if (!src[FPSTR(S_HEATING)][FPSTR(S_MIN_TEMP)].isNull()) {
    unsigned char value = src[FPSTR(S_HEATING)][FPSTR(S_MIN_TEMP)].as<unsigned char>();

-    if (value != dst.heating.minTemp && value >= vars.slave.heating.minTemp && value < vars.slave.heating.maxTemp && value != dst.heating.minTemp) {
+    if (value != dst.heating.minTemp && value >= vars.slave.heating.minTemp && value < vars.slave.heating.maxTemp && value != dst.heating.maxTemp) {
      dst.heating.minTemp = value;
      changed = true;
    }
@@ -1311,7 +1333,7 @@ bool jsonToSettings(const JsonVariantConst src, Settings& dst, bool safe = false
  if (!src[FPSTR(S_HEATING)][FPSTR(S_MAX_TEMP)].isNull()) {
    unsigned char value = src[FPSTR(S_HEATING)][FPSTR(S_MAX_TEMP)].as<unsigned char>();

-    if (value != dst.heating.maxTemp && value > vars.slave.heating.minTemp && value <= vars.slave.heating.maxTemp && value != dst.heating.maxTemp) {
+    if (value != dst.heating.maxTemp && value > vars.slave.heating.minTemp && value <= vars.slave.heating.maxTemp && value != dst.heating.minTemp) {
      dst.heating.maxTemp = value;
      changed = true;
    }
@@ -1332,6 +1354,49 @@ bool jsonToSettings(const JsonVariantConst src, Settings& dst, bool safe = false
    }
  }

+  if (!src[FPSTR(S_HEATING)][FPSTR(S_OVERHEAT_PROTECTION)][FPSTR(S_HIGH_TEMP)].isNull()) {
+    unsigned char value = src[FPSTR(S_HEATING)][FPSTR(S_OVERHEAT_PROTECTION)][FPSTR(S_HIGH_TEMP)].as<unsigned char>();
+
+    if (isValidTemp(value, dst.system.unitSystem, 0.0f, 100.0f) && value != dst.heating.overheatProtection.highTemp) {
+      dst.heating.overheatProtection.highTemp = value;
+      changed = true;
+    }
+  }
+
+  if (!src[FPSTR(S_HEATING)][FPSTR(S_OVERHEAT_PROTECTION)][FPSTR(S_LOW_TEMP)].isNull()) {
+    unsigned char value = src[FPSTR(S_HEATING)][FPSTR(S_OVERHEAT_PROTECTION)][FPSTR(S_LOW_TEMP)].as<unsigned char>();
+
+    if (isValidTemp(value, dst.system.unitSystem, 0.0f, 99.0f) && value != dst.heating.overheatProtection.lowTemp) {
+      dst.heating.overheatProtection.lowTemp = value;
+      changed = true;
+    }
+  }
+
+  if (dst.heating.overheatProtection.highTemp < dst.heating.overheatProtection.lowTemp) {
+    dst.heating.overheatProtection.highTemp = dst.heating.overheatProtection.lowTemp;
+    changed = true;
+  }
+
+  if (!src[FPSTR(S_HEATING)][FPSTR(S_FREEZE_PROTECTION)][FPSTR(S_LOW_TEMP)].isNull()) {
+    unsigned short value = src[FPSTR(S_HEATING)][FPSTR(S_FREEZE_PROTECTION)][FPSTR(S_LOW_TEMP)].as<uint8_t>();
+
+    if (isValidTemp(value, dst.system.unitSystem, 1, 30) && value != dst.heating.freezeProtection.lowTemp) {
+      dst.heating.freezeProtection.lowTemp = value;
+      changed = true;
+    }
+  }
+
+  if (!src[FPSTR(S_HEATING)][FPSTR(S_FREEZE_PROTECTION)][FPSTR(S_THRESHOLD_TIME)].isNull()) {
+    unsigned short value = src[FPSTR(S_HEATING)][FPSTR(S_FREEZE_PROTECTION)][FPSTR(S_THRESHOLD_TIME)].as<unsigned short>();
+
+    if (value >= 30 && value <= 1800) {
+      if (value != dst.heating.freezeProtection.thresholdTime) {
+        dst.heating.freezeProtection.thresholdTime = value;
+        changed = true;
+      }
+    }
+  }
+

  // dhw
  if (src[FPSTR(S_DHW)][FPSTR(S_ENABLED)].is<bool>()) {
@@ -1375,6 +1440,29 @@ bool jsonToSettings(const JsonVariantConst src, Settings& dst, bool safe = false
    }
  }

+  if (!src[FPSTR(S_DHW)][FPSTR(S_OVERHEAT_PROTECTION)][FPSTR(S_HIGH_TEMP)].isNull()) {
+    unsigned char value = src[FPSTR(S_DHW)][FPSTR(S_OVERHEAT_PROTECTION)][FPSTR(S_HIGH_TEMP)].as<unsigned char>();
+
+    if (isValidTemp(value, dst.system.unitSystem, 0.0f, 100.0f) && value != dst.dhw.overheatProtection.highTemp) {
+      dst.dhw.overheatProtection.highTemp = value;
+      changed = true;
+    }
+  }
+
+  if (!src[FPSTR(S_DHW)][FPSTR(S_OVERHEAT_PROTECTION)][FPSTR(S_LOW_TEMP)].isNull()) {
+    unsigned char value = src[FPSTR(S_DHW)][FPSTR(S_OVERHEAT_PROTECTION)][FPSTR(S_LOW_TEMP)].as<unsigned char>();
+
+    if (isValidTemp(value, dst.system.unitSystem, 0.0f, 99.0f) && value != dst.dhw.overheatProtection.lowTemp) {
+      dst.dhw.overheatProtection.lowTemp = value;
+      changed = true;
+    }
+  }
+
+  if (dst.dhw.overheatProtection.highTemp < dst.dhw.overheatProtection.lowTemp) {
+    dst.dhw.overheatProtection.highTemp = dst.dhw.overheatProtection.lowTemp;
+    changed = true;
+  }
+

  if (!safe) {
    // external pump
@@ -1806,7 +1894,7 @@ bool jsonToSensorSettings(const uint8_t sensorId, const JsonVariantConst src, Se

  // gpio
  if (!src[FPSTR(S_GPIO)].isNull()) {
-    if (dst.type != Sensors::Type::DALLAS_TEMP && dst.type == Sensors::Type::BLUETOOTH && dst.type == Sensors::Type::NTC_10K_TEMP) {
+    if (dst.type != Sensors::Type::DALLAS_TEMP && dst.type != Sensors::Type::NTC_10K_TEMP) {
      if (dst.gpio != GPIO_IS_NOT_CONFIGURED) {
        dst.gpio = GPIO_IS_NOT_CONFIGURED;
        changed = true;
@@ -2006,6 +2094,7 @@ void varsToJson(const Variables& src, JsonVariant dst) {
  mHeating[FPSTR(S_ENABLED)] = src.master.heating.enabled;
  mHeating[FPSTR(S_BLOCKING)] = src.master.heating.blocking;
  mHeating[FPSTR(S_INDOOR_TEMP_CONTROL)] = src.master.heating.indoorTempControl;
+  mHeating[FPSTR(S_OVERHEAT)] = src.master.heating.overheat;
  mHeating[FPSTR(S_SETPOINT_TEMP)] = roundf(src.master.heating.setpointTemp, 2);
  mHeating[FPSTR(S_TARGET_TEMP)] = roundf(src.master.heating.targetTemp, 2);
  mHeating[FPSTR(S_CURRENT_TEMP)] = roundf(src.master.heating.currentTemp, 2);
@@ -2017,6 +2106,7 @@ void varsToJson(const Variables& src, JsonVariant dst) {

  auto mDhw = master[FPSTR(S_DHW)].to<JsonObject>();
  mDhw[FPSTR(S_ENABLED)] = src.master.dhw.enabled;
+  mDhw[FPSTR(S_OVERHEAT)] = src.master.dhw.overheat;
  mDhw[FPSTR(S_TARGET_TEMP)] = roundf(src.master.dhw.targetTemp, 2);
  mDhw[FPSTR(S_CURRENT_TEMP)] = roundf(src.master.dhw.currentTemp, 2);
  mDhw[FPSTR(S_RETURN_TEMP)] = roundf(src.master.dhw.returnTemp, 2);
--- a/src_data/locales/cn.json
+++ b/src_data/locales/cn.json
@@ -0,0 +1,507 @@
+{
+  "values": {
+    "logo": "OpenTherm Gateway",
+    "nav": {
+      "license": "授权许可",
+      "source": "源代码",
+      "help": "帮助",
+      "issues": "问题与反馈",
+      "releases": "发行版"
+    },
+    "dbm": "dBm",
+    "kw": "kW",
+    "time": {
+      "days": "天",
+      "hours": "小时",
+      "min": "分",
+      "sec": "秒"
+    },
+
+    "button": {
+      "upgrade": "固件升级",
+      "restart": "重启",
+      "save": "保存",
+      "saved": "已保存",
+      "refresh": "刷新",
+      "restore": "恢复",
+      "restored": "已恢复",
+      "backup": "备份",
+      "wait": "请等待...",
+      "uploading": "上传中...",
+      "success": "成功",
+      "error": "错误"
+    },
+
+    "index": {
+      "title": "OpenTherm Gateway",
+
+      "section": {
+        "network": "网络",
+        "system": "系统"
+      },
+
+      "system": {
+        "build": {
+          "title": "Build",
+          "version": "固件版本",
+          "date": "日期",
+          "core": "内核版本",
+          "sdk": "SDK"
+        },
+        "uptime": "运行时间",
+        "memory": {
+          "title": "可用内存",
+          "maxFreeBlock": "max free block",
+          "min": "min"
+        },
+        "board": "开发板",
+        "chip": {
+          "model": "芯片",
+          "cores": "核心数",
+          "freq": "频率"
+        },
+        "flash": {
+          "size": "闪存容量",
+          "realSize": "实际容量"
+        },
+        "lastResetReason": "上次重置原因"
+      }
+    },
+
+    "dashboard": {
+      "name": "仪表盘",
+      "title": "仪表盘 - OpenTherm Gateway",
+
+      "section": {
+        "control": "调节",
+        "states": "状态",
+        "sensors": "传感器",
+        "diag": "OpenTherm 诊断"
+      },
+
+      "thermostat": {
+        "heating": "供暖",
+        "dhw": "生活热水",
+        "temp.current": "当前温度",
+        "enable": "启用",
+        "turbo": "Turbo 模式"
+      },
+
+      "notify": {
+        "fault": {
+          "title": "锅炉报警状态已激活!",
+          "note": "建议检查锅炉并查看说明书对应的报警代码:"
+        },
+        "diag": {
+          "title": "锅炉诊断状态已激活!",
+          "note": "锅炉可能需要检查，建议查看说明书对应的诊断代码:"
+        },
+        "reset": "点击复位"
+      },
+
+      "states": {
+        "mNetworkConnected": "网络连接状态",
+        "mMqttConnected": "MQTT服务器连接状态",
+        "mEmergencyState": "应急模式",
+        "mExtPumpState": "外置循环泵",
+        "mCascadeControlInput": "Cascade 控制 (input)",
+        "mCascadeControlOutput": "Cascade 控制 (output)",
+
+        "sConnected": "OpenTherm 通讯状态",
+        "sFlame": "火焰",
+        "sCooling": "制冷",
+        "sFaultActive": "报警状态",
+        "sFaultCode": "报警代码",
+        "sDiagActive": "诊断状态",
+        "sDiagCode": "诊断代码",
+        
+        "mHeatEnabled": "供暖功能已启用",
+        "mHeatBlocking": "供暖",
+        "mHeatOverheat": "供暖超热保护",
+        "sHeatActive": "供暖激活状态",
+        "mHeatSetpointTemp": "供暖供水设定温度",
+        "mHeatTargetTemp": "供暖供水目标温度",
+        "mHeatCurrTemp": "供暖当前供水温度",
+        "mHeatRetTemp": "供暖回水温度",
+        "mHeatIndoorTemp": "供暖，室内温度",
+        "mHeatOutdoorTemp": "供暖，室外温度",
+
+        "mDhwEnabled": "生活热水功能已启用",
+        "mDhwOverheat": "生活热水超热保护",
+        "sDhwActive": "生活热水激活",
+        "mDhwTargetTemp": "生活热水目标温度",
+        "mDhwCurrTemp": "生活热水当前出水温度",
+        "mDhwRetTemp": "生活热水回水温度"
+      },
+
+      "sensors": {
+        "values": {
+          "temp": "温度",
+          "humidity": "湿度",
+          "battery": "电量",
+          "rssi": "RSSI"
+        }
+      }
+    },
+
+    "network": {
+      "title": "网络 - OpenTherm Gateway",
+      "name": "网络设置",
+
+      "section": {
+        "static": "静态设置",
+        "availableNetworks": "可用网络",
+        "staSettings": "WiFi 设置",
+        "apSettings": "AP 设置"
+      },
+
+      "scan": {
+        "pos": "#",
+        "info": "Info"
+      },
+
+      "wifi": {
+        "ssid": "SSID",
+        "password": "密码",
+        "channel": "频道",
+        "signal": "信号强度",
+        "connected": "已连接"
+      },
+
+      "params": {
+        "hostname": "Hostname",
+        "dhcp": "自动 (DHCP)",
+        "mac": "物理地址 (MAC)",
+        "ip": "IP",
+        "subnet": "子网掩码",
+        "gateway": "网关",
+        "dns": "DNS 服务器"
+      },
+
+      "sta": {
+        "channel.note": "自动选择设置为0"
+      }
+    },
+
+    "sensors": {
+      "title": "传感器设置 - OpenTherm Gateway",
+      "name": "传感器设置",
+
+      "enabled": "启用",
+      "sensorName": {
+        "title": "传感器名称",
+        "note": "只能包含：a-z、A-Z、0-9、下划线和空格"
+      },
+      "purpose": "用途",
+      "purposes": {
+        "outdoorTemp": "室外温度",
+        "indoorTemp": "室内温度",
+        "heatTemp": "供暖，温度",
+        "heatRetTemp": "供暖回水温度",
+        "dhwTemp": "生活热水温度",
+        "dhwRetTemp": "生活热水回水温度",
+        "dhwFlowRate": "生活热水水流量",
+        "exhaustTemp": "烟气温度",
+        "modLevel": "Modulation level (%)",
+        "number": "Number (raw)",
+        "powerFactor": "功率 (%)",
+        "power": "功率(kW)",
+        "fanSpeed": "风机转速",
+        "co2": "CO2",
+        "pressure": "压力",
+        "humidity": "湿度",
+        "temperature": "温度",
+        "notConfigured": "未配置"
+      },
+      "type": "类型/来源",
+      "types": {
+        "otOutdoorTemp": "OpenTherm, outdoor temp",
+        "otHeatTemp": "OpenTherm, heating, temp",
+        "otHeatRetTemp": "OpenTherm, heating, return temp",
+        "otDhwTemp": "OpenTherm, DHW, temperature",
+        "otDhwTemp2": "OpenTherm, DHW, temperature 2",
+        "otDhwFlowRate": "OpenTherm, DHW, flow rate",
+        "otCh2Temp": "OpenTherm, channel 2, temp",
+        "otExhaustTemp": "OpenTherm, exhaust temp",
+        "otHeatExchangerTemp": "OpenTherm, heat exchanger temp",
+        "otPressure": "OpenTherm, pressure",
+        "otModLevel": "OpenTherm, modulation level",
+        "otCurrentPower": "OpenTherm, current power",
+        "otExhaustCo2": "OpenTherm, exhaust CO2",
+        "otExhaustFanSpeed": "OpenTherm, exhaust fan speed",
+        "otSupplyFanSpeed": "OpenTherm, supply fan speed",
+        "otSolarStorageTemp": "OpenTherm, solar storage temp",
+        "otSolarCollectorTemp": "OpenTherm, solar collector temp",
+        "otFanSpeedSetpoint": "OpenTherm, setpoint fan speed",
+        "otFanSpeedCurrent": "OpenTherm, current fan speed",
+        "otBurnerStarts": "OpenTherm, number of burner starts",
+        "otDhwBurnerStarts": "OpenTherm, number of burner starts (DHW)",
+        "otHeatingPumpStarts": "OpenTherm, number of pump starts (heating)",
+        "otDhwPumpStarts": "OpenTherm, number of pump starts (DHW)",
+        "otBurnerHours": "OpenTherm, number of burner operating hours",
+        "otDhwBurnerHours": "OpenTherm, number of burner operating hours (DHW)",
+        "otHeatingPumpHours": "OpenTherm, number of pump operating hours (heating)",
+        "otDhwPumpHours": "OpenTherm, number of pump operating hours (DHW)",
+        
+        "ntcTemp": "NTC 传感器",
+        "dallasTemp": "DALLAS 传感器",
+        "bluetooth": "BLE 传感器",
+        "heatSetpointTemp": "Heating, setpoint temp",
+        "manual": "通过 MQTT/API 手动配置",
+        "notConfigured": "未配置"
+      },
+      "gpio": "GPIO",
+      "address": {
+        "title": "传感器地址",
+        "note": "如需自动检测DALLAS传感器，请保持默认设置；如需连接BLE设备，则需提供MAC地址"
+      },
+      "correction": {
+        "desc": "数值校正",
+        "offset": "补偿值（偏移量）",
+        "factor": "Multiplier"
+      },
+      "filtering": {
+        "desc": "数值滤波",
+        "enabled": {
+          "title": "启用滤波",
+          "note": "如果图表中有大量尖锐的噪声，此功能会很有用。使用的滤波器是 \"滑动平均滤波器\"."
+        },
+        "factor": {
+          "title": "滤波系数",
+          "note": "数值越低，数值变化越平滑且响应越滞后"
+        }
+      }
+    },
+
+    "settings": {
+      "title": "设置 - OpenTherm Gateway",
+      "name": "设置",
+
+      "section": {
+        "portal": "Portal 设置",
+        "system": "系统设置",
+        "diag": "诊断",
+        "heating": "供热设置",
+        "dhw": "生活热水设置",
+        "emergency": "应急模式设置",
+        "equitherm": "气候补偿设置",
+        "pid": "PID 参数设置",
+        "ot": "OpenTherm协议设置",
+        "mqtt": "MQTT 服务器设置",
+        "extPump": "外置循环泵设置",
+        "cascadeControl": "Cascade 级联控制设置"
+      },
+
+      "enable": "启用",
+      "note": {
+        "restart": "更改这些设置后，必须重启设备以使变更生效",
+        "blankNotUse": "空白 - 未使用",
+        "bleDevice": "BLE设备仅支持搭载BLE功能的特定ESP32开发板使用!"
+      },
+
+      "temp": {
+        "min": "最低温度",
+        "max": "最高温度"
+      },
+      "maxModulation": "最大调制范围",
+      "ohProtection": {
+        "title": "超温保护",
+        "desc": "<b>注意：</b> 当锅炉内置过热保护失效或工作异常导致系统超温时，此功能可提供额外保护。如需禁用，请将<b>最高温度</b>和<b>最低温度</b>均设为0。",
+        "highTemp": {
+          "title": "高温阈值",
+          "note": "触发燃烧器强制关闭的阈值温度"
+        },
+        "lowTemp": {
+          "title": "低温阈值",
+          "note": "燃烧器重新启动的阈值温度"
+        }
+      },
+      "freezeProtection": {
+        "title": "防冻保护",
+        "desc": "当热媒或室内温度在<b>等待时间</b> 内降至<b>低温阈值</b>以下时，系统将强制启动加热功能。",
+        "lowTemp": "低温阈值",
+        "thresholdTime": "等待时间<small>(秒)</small>"
+      },
+
+      "portal": {
+        "login": "登录",
+        "password": "密码",
+        "auth": "需身份验证",
+        "mdns": "使用 mDNS"
+      },
+
+      "system": {
+        "unit": "单位",
+        "metric": "公制 <small>(摄氏度、升、巴)</small>",
+        "imperial": "英制 <small>(华氏度、加仑、psi)</small>",
+        "statusLedGpio": "状态指示灯GPIO引脚",
+        "logLevel": "日志级别",
+        "serial": {
+          "enable": "启用串口",
+          "baud": "串口波特率"
+        },
+        "telnet": {
+          "enable": "启用 Telnet",
+          "port": {
+            "title": "Telnet 端口",
+            "note": "默认值：23"
+          }
+        },
+        "ntp": {
+          "server": "NTP服务器",
+          "timezone": "时区",
+          "timezonePresets": "选择预设配置..."
+        }
+      },
+
+      "heating": {
+        "hyst": "滞后值<small>(单位：度)</small>",
+        "turboFactor": "Turbo 模式系数"
+      },
+
+      "emergency": {
+        "desc": "紧急模式会在以下情况自动激活（当PID或气候补偿无法计算热媒设定值时）：<br />启用气候补偿但室外温度传感器断开连接；<br />启用PID或 OpenTherm 选项中启用<i>原生供暖控制</i>但室内温度传感器断开连接。<br /><b>注意：</b> 网络故障或MQTT 服务器连接故障时，类型为<i>通过MQTT/API手动控制<i>的传感器将显示为断开连接状态。",
+        
+        "target": {
+          "title": "目标温度",
+          "note": "<b>重要提示：</b> 若启用OpenTherm选项 <i>«原生供暖控制»</i>，此处设定值为<u>目标室内温度</u>；<br />其他所有情况下，此处设定值为 <u>目标热媒出水温度</u>."
+        },
+        "treshold": "阈值时间 <small>(秒)</small>"
+      },
+
+      "equitherm": {
+        "n": "N 系数",
+        "k": "K 系数",
+        "t": {
+          "title": "T 系数",
+          "note": "启用PID时此参数无效"
+        }
+      },
+
+      "pid": {
+        "p": "P 系数",
+        "i": "I 系数",
+        "d": "D 系数",
+        "dt": "DT <small>以秒为单位</small>",
+        "limits": {
+          "title": "Limits",
+          "note": "<b>重要提示：</b> When using «Equitherm» and «PID» at the same time, the min and max temperatures limit the influence on the «Equitherm» result temperature.<br />Thus, if the min temperature is set to -15 and the max temperature is set to 15, then the final heat carrier setpoint will be from <code>equitherm_result - 15</code> to <code>equitherm_result + 15</code>."
+        },
+        "deadband": {
+          "title": "Deadband",
+          "note": "Deadband is a range around the target temperature where PID regulation becomes less active. Within this range, the algorithm can reduce intensity or pause adjustments to avoid overreacting to small fluctuations.<br /><br />For instance, with a target temperature of 22°, a lower threshold of 1.0, and an upper threshold of 0.5, the deadband operates between 21° and 22.5°. If the I coefficient is 0.0005 and the I multiplier is 0.05, then within the deadband, the I coefficient becomes: <code>0.0005 * 0.05 = 0.000025</code>",
+          "p_multiplier": "Multiplier for P factor",
+          "i_multiplier": "Multiplier for I factor",
+          "d_multiplier": "Multiplier for D factor",
+          "thresholdHigh": "Threshold high",
+          "thresholdLow": "Threshold low"
+        }
+      },
+
+      "ot": {
+        "advanced": "高级设置",
+        "inGpio": "In GPIO",
+        "outGpio": "Out GPIO",
+        "ledGpio": "RX LED GPIO",
+        "memberId": "主设备成员 ID",
+        "flags": "主设备标志",
+        "minPower": {
+          "title": "最小锅炉功率 <small>(kW)</small>",
+          "note": "该值对应锅炉0-1%的调制水平，通常在锅炉参数设置中的\"最小有效热输出\"。"
+        },
+        "maxPower": {
+          "title": "最大锅炉功率 <small>(kW)</small>",
+          "note": "<b>0</b> - 自动检测，通常在锅炉参数设置中的\"最大有效热输出\"。 "
+        },
+
+        "options": {
+          "title": "选项（附加设置）",
+          "desc": "附加设置选项可调整锅炉的运行逻辑。由于协议未完整记录所有选项，同一选项在不同锅炉上可能产生不同效果。<br /><b>注意：</b>若系统运行正常，无需修改设置。",
+          "dhwSupport": "生活热水支持",
+          "coolingSupport": "制冷支持",
+          "summerWinterMode": "夏季/冬季模式",
+          "heatingStateToSummerWinterMode": "以供暖状态作为夏季/冬季模式",
+          "ch2AlwaysEnabled": "CH2 始终启用",
+          "heatingToCh2": "将供暖同步至 CH2",
+          "dhwToCh2": "将生活热水同步至 CH2",
+          "dhwBlocking": "生活热水锁定",
+          "dhwStateAsDhwBlocking": "以生活热水状态作为生活热水锁定依据",
+          "maxTempSyncWithTargetTemp": "将最高供暖温度与目标温度同步",
+          "getMinMaxTemp": "从锅炉获取最小/最大温度参数",
+          "ignoreDiagState": "忽略诊断状态",
+          "autoFaultReset": "自动报警复位 <small>(不推荐！)</small>",
+          "autoDiagReset": "自动诊断复位 <small>(不推荐！)</small>",
+          "setDateAndTime": "同步设置锅炉日期与时间",
+          "immergasFix": "针对Immergas锅炉的兼容性修复"
+        },
+
+        "nativeHeating": {
+          "title": "原生锅炉供暖控制",
+          "note": "<u>注意：</u> 仅适用于锅炉需接收目标室温并自主调节载热介质温度的场景，与固件中的PID及Equithermq气候补偿功能不兼容。"
+        }
+      },
+
+      "mqtt": {
+        "homeAssistantDiscovery": "Home Assistant 自动发现",
+        "server": "服务器地址",
+        "port": "端口",
+        "user": "用户名",
+        "password": "密码",
+        "prefix": "Prefix 前缀",
+        "interval": "发布间隔 <small>(秒)</small>"
+      },
+
+      "extPump": {
+        "use": "使用外置循环泵",
+        "gpio": "继电器 GPIO引脚",
+        "postCirculationTime": "后循环时间 <small>(分钟)</small>",
+        "antiStuckInterval": "防卡死间隔时间<small>(天)</small>",
+        "antiStuckTime": "防卡死运行时长<small>(分钟)</small>"
+      },
+
+      "cascadeControl": {
+        "input": {
+          "desc": "仅当另一台锅炉发生故障时启用本锅炉加热。另一台锅炉的控制器需在故障发生时切换GPIO输入状态以触发本功能。",
+          "enable": "启用 input",
+          "gpio": "GPIO",
+          "invertState": "切换 GPIO 状态",
+          "thresholdTime": "状态变化阈值时间<small>(秒)</small>"
+        },
+        "output": {
+          "desc": "可通过<u>继电器</u>控制另一台锅炉的启停。",
+          "enable": "启用 output",
+          "gpio": "GPIO",
+          "invertState": "切换 GPIO 状态",
+          "thresholdTime": "状态变化阈值时间 <small>(秒)</small>",
+          "events": {
+            "desc": "事件",
+            "onFault": "当故障状态激活时",
+            "onLossConnection": "当OpenTherm连接中断时",
+            "onEnabledHeating": "当供暖功能启用时"
+          }
+        }
+      }
+    },
+
+    "upgrade": {
+      "title": "固件升级 - OpenTherm Gateway",
+      "name": "固件升级",
+
+      "section": {
+        "backupAndRestore": "备份与恢复",
+        "backupAndRestore.desc": "本功能支持备份和恢复全部设置",
+        "upgrade": "升级",
+        "upgrade.desc": "本模块支持升级设备的固件与系统文件。<br />可从以下地址下载最新版本 <a href=\"https://github.com/Laxilef/OTGateway/releases\" target=\"_blank\">Releases page</a> 。" 
+      },
+
+      "note": {
+        "disclaimer1": "升级系统文件成功后，所有设置将恢复为默认值！升级前请务必备份配置。",
+        "disclaimer2": "升级成功后，设备将在15秒后自动重启。"
+      },
+
+      "settingsFile": "设置文件",
+      "fw": "Firmware",
+      "fs": "Filesystem"
+    }
+  }
+}
--- a/src_data/locales/en.json
+++ b/src_data/locales/en.json
@@ -117,6 +117,7 @@
        
        "mHeatEnabled": "Heating enabled",
        "mHeatBlocking": "Heating blocked",
+        "mHeatOverheat": "Heating overheat",
        "sHeatActive": "Heating active",
        "mHeatSetpointTemp": "Heating setpoint temp",
        "mHeatTargetTemp": "Heating target temp",
@@ -126,6 +127,7 @@
        "mHeatOutdoorTemp": "Heating, outdoor temp",

        "mDhwEnabled": "DHW enabled",
+        "mDhwOverheat": "DHW overheat",
        "sDhwActive": "DHW active",
        "mDhwTargetTemp": "DHW target temp",
        "mDhwCurrTemp": "DHW current temp",
@@ -302,6 +304,24 @@
        "max": "Maximum temperature"
      },
      "maxModulation": "Max modulation level",
+      "ohProtection": {
+        "title": "Overheating protection",
+        "desc": "<b>Note:</b> This feature can be useful if the built-in boiler overheating protection does not work or does not work correctly and the heat carrier boils. To disable, set 0 as <b>high</b> and <b>low</b> temperature.",
+        "highTemp": {
+          "title": "High temperature threshold",
+          "note": "Threshold at which the burner will be forcibly switched off"
+        },
+        "lowTemp": {
+          "title": "Low temperature threshold",
+          "note": "Threshold at which the burner can be turned on again"
+        }
+      },
+      "freezeProtection": {
+        "title": "Freeze protection",
+        "desc": "Heating will be forced to turn on if the heat carrier or indoor temperature drops below <b>Low temperature</b> during <b>Waiting time</b>.",
+        "lowTemp": "Low temperature threshold",
+        "thresholdTime": "Waiting time <small>(sec)</small>"
+      },

      "portal": {
        "login": "Login",
@@ -395,7 +415,8 @@
        },

        "options": {
-          "desc": "Options",
+          "title": "Options (additional settings)",
+          "desc": "Options can change the logic of the boiler. Not all options are documented in the protocol, so the same option can have different effects on different boilers.<br /><b>Note:</b> There is no need to change anything if everything works well.",
          "dhwSupport": "DHW support",
          "coolingSupport": "Cooling support",
          "summerWinterMode": "Summer/winter mode",
@@ -404,6 +425,7 @@
          "heatingToCh2": "Duplicate heating to CH2",
          "dhwToCh2": "Duplicate DHW to CH2",
          "dhwBlocking": "DHW blocking",
+          "dhwStateAsDhwBlocking": "DHW state as DHW blocking",
          "maxTempSyncWithTargetTemp": "Sync max heating temp with target temp",
          "getMinMaxTemp": "Get min/max temp from boiler",
          "ignoreDiagState": "Ignore diag state",
--- a/src_data/locales/it.json
+++ b/src_data/locales/it.json
@@ -117,6 +117,7 @@
        
        "mHeatEnabled": "Riscaldamento attivato",
        "mHeatBlocking": "Riscaldamento bloccato",
+        "mHeatOverheat": "Riscaldamento surriscaldamento",
        "sHeatActive": "Riscaldamento attivo",
        "mHeatSetpointTemp": "Temp riscaldamento impostato",
        "mHeatTargetTemp": "Target Temp caldaia",
@@ -126,6 +127,7 @@
        "mHeatOutdoorTemp": "Riscaldamento, temp esterna",

        "mDhwEnabled": "ACS attivata",
+        "mDhwOverheat": "ACS surriscaldamento",
        "sDhwActive": "ACS attiva",
        "mDhwTargetTemp": "ACS temp impostata",
        "mDhwCurrTemp": "ACS temp attuale",
@@ -302,6 +304,24 @@
        "max": "Temperatura massima"
      },
      "maxModulation": "Max livello modulazione",
+      "ohProtection": {
+        "title": "Protezione contro il surriscaldamento",
+        "desc": "<b>Nota:</b> questa funzione può essere utile se la protezione contro il surriscaldamento integrata nella caldaia non funziona o non funziona correttamente e il fluido termovettore bolle. Per disattivarla, impostare 0 come temperatura <b>alta</b> e <b>bassa</b>.",
+        "highTemp": {
+          "title": "Soglia di temperatura alta",
+          "note": "Soglia alla quale il bruciatore verrà spento forzatamente"
+        },
+        "lowTemp": {
+          "title": "Soglia di temperatura bassa",
+          "note": "Soglia alla quale il bruciatore può essere riacceso"
+        }
+      },
+      "freezeProtection": {
+        "title": "Protezione antigelo",
+        "desc": "Il riscaldamento verrà attivato forzatamente se la temperatura del vettore di calore o interna scende al di sotto della <b>temperatura minima</b> durante il <b>tempo di attesa</b>.",
+        "lowTemp": "Soglia di temperatura minima",
+        "thresholdTime": "Tempo di attesa <small>(sec)</small>"
+      },

      "portal": {
        "login": "Login",
@@ -395,7 +415,8 @@
        },

        "options": {
-          "desc": "Opzioni",
+          "title": "Opzioni (impostazioni aggiuntive)",
+          "desc": "Le opzioni possono modificare la logica della caldaia. Non tutte le opzioni sono documentate nel protocollo, quindi la stessa opzione può avere effetti diversi su caldaie diverse.<br /><b>Nota:</b> Non è necessario modificare nulla se tutto funziona correttamente.",
          "dhwSupport": "Supporto ACS",
          "coolingSupport": "Supporto rafferscamento",
          "summerWinterMode": "Modalità Estate/inverno",
@@ -404,6 +425,7 @@
          "heatingToCh2": "Riproduci riscaldamento su CH2",
          "dhwToCh2": "Riproduci ACS su CH2",
          "dhwBlocking": "Bloccare ACS",
+          "dhwStateAsDhwBlocking": "Stato ACS come bloccare ACS",
          "maxTempSyncWithTargetTemp": "Sincronizza la temperatura massima di riscaldamento con la temperatura target",
          "getMinMaxTemp": "Prendi temp min/max dalla caldaia",
          "ignoreDiagState": "Ignora lo stato diagnostico",
--- a/src_data/locales/ru.json
+++ b/src_data/locales/ru.json
@@ -117,6 +117,7 @@
        
        "mHeatEnabled": "Отопление",
        "mHeatBlocking": "Блокировка отопления",
+        "mHeatOverheat": "Отопление, перегрев",
        "sHeatActive": "Активность отопления",
        "mHeatSetpointTemp": "Отопление, уставка",
        "mHeatTargetTemp": "Отопление, целевая температура",
@@ -126,6 +127,7 @@
        "mHeatOutdoorTemp": "Отопление, наружная темп.",

        "mDhwEnabled": "ГВС",
+        "mDhwOverheat": "ГВС, перегрев",
        "sDhwActive": "Активность ГВС",
        "mDhwTargetTemp": "ГВС, целевая температура",
        "mDhwCurrTemp": "ГВС, текущая температура",
@@ -302,6 +304,24 @@
        "max": "Макс. температура"
      },
      "maxModulation": "Макс. уровень модуляции",
+      "ohProtection": {
+        "title": "Защита от перегрева",
+        "desc": "<b>Примечание:</b> Эта функция может быть полезна, если встроенная защита от перегрева котла не срабатывает или срабатывает некорректно и теплоноситель закипает. Для отключения установите 0 в качестве <b>верхнего</b> и <b>нижнего</b> порога температуры.",
+        "highTemp": {
+          "title": "Верхний порог температуры",
+          "note": "Порог, при котором горелка будет принудительно отключена"
+        },
+        "lowTemp": {
+          "title": "Нижний порог температуры",
+          "note": "Порог, при котором горелка может быть включена снова"
+        }
+      },
+      "freezeProtection": {
+        "title": "Защита от замерзания",
+        "desc": "Отопление будет принудительно включено, если темп. теплоносителя или внутренняя темп. опустится ниже <b>нижнего порога</b> в течение <b>времени ожидания</b>.",
+        "lowTemp": "Нижний порог температуры",
+        "thresholdTime": "Время ожидания <small>(сек)</small>"
+      },

      "portal": {
        "login": "Логин",
@@ -395,7 +415,8 @@
        },

        "options": {
-          "desc": "Опции",
+          "title": "Опции (дополнительные настройки)",
+          "desc": "Опции могут менять логику работы котла. Не все опции задокументированы в протоколе, поэтому одна и та же опция может иметь разный эффект на разных котлах.<br /><b>Примечание:</b> Нет необходимости что-то менять, если всё работает хорошо.",
          "dhwSupport": "Поддержка ГВС",
          "coolingSupport": "Поддержка охлаждения",
          "summerWinterMode": "Летний/зимний режим",
@@ -404,6 +425,7 @@
          "heatingToCh2": "Дублировать параметры отопления в канал 2",
          "dhwToCh2": "Дублировать параметры ГВС в канал 2",
          "dhwBlocking": "DHW blocking",
+          "dhwStateAsDhwBlocking": "DHW blocking в качестве состояния ГВС",
          "maxTempSyncWithTargetTemp": "Синхронизировать макс. темп. отопления с целевой темп.",
          "getMinMaxTemp": "Получать мин. и макс. температуру от котла",
          "ignoreDiagState": "Игнорировать состояние диагностики",
--- a/src_data/pages/dashboard.html
+++ b/src_data/pages/dashboard.html
@@ -21,6 +21,7 @@
          <li>
            <select id="lang" aria-label="Lang">
              <option value="en" selected>EN</option>
+              <option value="cn">CN</option>
              <option value="it">IT</option>
              <option value="ru">RU</option>
            </select>
@@ -184,6 +185,10 @@
                  <th scope="row" data-i18n>dashboard.states.mHeatBlocking</th>
                  <td><i class="mHeatBlocking"></i></td>
                </tr>
+                <tr>
+                  <th scope="row" data-i18n>dashboard.states.mHeatOverheat</th>
+                  <td><i class="mHeatOverheat"></i></td>
+                </tr>
                <tr>
                  <th scope="row" data-i18n>dashboard.states.sHeatActive</th>
                  <td><i class="sHeatActive"></i></td>
@@ -218,6 +223,10 @@
                  <th scope="row" data-i18n>dashboard.states.mDhwEnabled</th>
                  <td><i class="mDhwEnabled"></i></td>
                </tr>
+                <tr>
+                  <th scope="row" data-i18n>dashboard.states.mDhwOverheat</th>
+                  <td><i class="mDhwOverheat"></i></td>
+                </tr>
                <tr>
                  <th scope="row" data-i18n>dashboard.states.sDhwActive</th>
                  <td><i class="sDhwActive"></i></td>
@@ -611,6 +620,11 @@
              result.master.heating.blocking ? "red" : "green"
            );
            setState('.mHeatIndoorTempControl', result.master.heating.indoorTempControl);
+            setStatus(
+              '.mHeatOverheat',
+              result.master.heating.overheat ? "success" : "error",
+              result.master.heating.overheat ? "red" : "green"
+            );
            setValue('.mHeatSetpointTemp', result.master.heating.setpointTemp);
            setValue('.mHeatTargetTemp', result.master.heating.targetTemp);
            setValue('.mHeatCurrTemp', result.master.heating.currentTemp);
@@ -621,6 +635,11 @@
            setValue('.mHeatMaxTemp', result.master.heating.maxTemp);

            setState('.mDhwEnabled', result.master.dhw.enabled);
+            setStatus(
+              '.mDhwOverheat',
+              result.master.dhw.overheat ? "success" : "error",
+              result.master.dhw.overheat ? "red" : "green"
+            );
            setValue('.mDhwTargetTemp', result.master.dhw.targetTemp);
            setValue('.mDhwCurrTemp', result.master.dhw.currentTemp);
            setValue('.mDhwRetTemp', result.master.dhw.returnTemp);
--- a/src_data/pages/index.html
+++ b/src_data/pages/index.html
@@ -21,6 +21,7 @@
          <li>
            <select id="lang" aria-label="Lang">
              <option value="en" selected>EN</option>
+              <option value="cn">CN</option>
              <option value="it">IT</option>
              <option value="ru">RU</option>
            </select>
--- a/src_data/pages/network.html
+++ b/src_data/pages/network.html
@@ -21,6 +21,7 @@
          <li>
            <select id="lang" aria-label="Lang">
              <option value="en" selected>EN</option>
+              <option value="cn">CN</option>
              <option value="it">IT</option>
              <option value="ru">RU</option>
            </select>
--- a/src_data/pages/sensors.html
+++ b/src_data/pages/sensors.html
@@ -21,6 +21,7 @@
          <li>
            <select id="lang" aria-label="Lang">
              <option value="en" selected>EN</option>
+              <option value="cn">CN</option>
              <option value="it">IT</option>
              <option value="ru">RU</option>
            </select>
--- a/src_data/pages/settings.html
+++ b/src_data/pages/settings.html
@@ -21,6 +21,7 @@
          <li>
            <select id="lang" aria-label="Lang">
              <option value="en" selected>EN</option>
+              <option value="cn">CN</option>
              <option value="it">IT</option>
              <option value="ru">RU</option>
            </select>
@@ -207,6 +208,50 @@
                <input type="number" inputmode="numeric" name="heating[maxModulation]" min="1" max="100" step="1" required>
              </label>

+              <hr />
+
+              <details>
+                <summary><b data-i18n>settings.ohProtection.title</b></summary>
+
+                <div class="grid">
+                  <label>
+                    <span data-i18n>settings.ohProtection.highTemp.title</span>
+                    <input type="number" inputmode="numeric" name="heating[overheatProtection][highTemp]" min="0" max="0" step="1" required>
+                    <small data-i18n>settings.ohProtection.highTemp.note</small>
+                  </label>
+
+                  <label>
+                    <span data-i18n>settings.ohProtection.lowTemp.title</span>
+                    <input type="number" inputmode="numeric" name="heating[overheatProtection][lowTemp]" min="0" max="0" step="1" required>
+                    <small data-i18n>settings.ohProtection.lowTemp.note</small>
+                  </label>
+                </div>
+
+                <small data-i18n>settings.ohProtection.desc</small>
+              </details>
+
+              <hr />
+
+              <details>
+                <summary><b data-i18n>settings.freezeProtection.title</b></summary>
+
+                <div class="grid">
+                  <label>
+                    <span data-i18n>settings.freezeProtection.lowTemp</span>
+                    <input type="number" inputmode="numeric" name="heating[freezeProtection][lowTemp]" min="0" max="0" step="1" required>
+                  </label>
+
+                  <label>
+                    <span data-i18n>settings.freezeProtection.thresholdTime</span>
+                    <input type="number" inputmode="numeric" name="heating[freezeProtection][thresholdTime]" min="30" max="1800" step="1" required>
+                  </label>
+                </div>
+
+                <small data-i18n>settings.freezeProtection.desc</small>
+              </details>
+
+              <br />
+
              <button type="submit" data-i18n>button.save</button>
            </form>
          </div>
@@ -236,6 +281,30 @@
                <input type="number" inputmode="numeric" name="dhw[maxModulation]" min="1" max="100" step="1" required>
              </label>

+              <hr />
+
+              <details>
+                <summary><b data-i18n>settings.ohProtection.title</b></summary>
+
+                <div class="grid">
+                  <label>
+                    <span data-i18n>settings.ohProtection.highTemp.title</span>
+                    <input type="number" inputmode="numeric" name="dhw[overheatProtection][highTemp]" min="0" max="0" step="1" required>
+                    <small data-i18n>settings.ohProtection.highTemp.note</small>
+                  </label>
+
+                  <label>
+                    <span data-i18n>settings.ohProtection.lowTemp.title</span>
+                    <input type="number" inputmode="numeric" name="dhw[overheatProtection][lowTemp]" min="0" max="0" step="1" required>
+                    <small data-i18n>settings.ohProtection.lowTemp.note</small>
+                  </label>
+                </div>
+
+                <small data-i18n>settings.ohProtection.desc</small>
+              </details>
+
+              <br />
+
              <button type="submit" data-i18n>button.save</button>
            </form>
          </div>
@@ -483,92 +552,107 @@
                </label>
              </div>

-              <fieldset>
-                <legend data-i18n>settings.ot.options.desc</legend>
+              <details>
+                <summary><b data-i18n>settings.ot.options.title</b></summary>

-                <label>
-                  <input type="checkbox" name="opentherm[options][dhwSupport]" value="true">
-                  <span data-i18n>settings.ot.options.dhwSupport</span>
-                </label>
+                <div>
+                  <fieldset>
+                    <small data-i18n>settings.ot.options.desc</small>
+                  </fieldset>

-                <label>
-                  <input type="checkbox" name="opentherm[options][coolingSupport]" value="true">
-                  <span data-i18n>settings.ot.options.coolingSupport</span>
-                </label>
+                  <fieldset>
+                    <label>
+                      <input type="checkbox" name="opentherm[options][dhwSupport]" value="true">
+                      <span data-i18n>settings.ot.options.dhwSupport</span>
+                    </label>

-                <label>
-                  <input type="checkbox" name="opentherm[options][summerWinterMode]" value="true">
-                  <span data-i18n>settings.ot.options.summerWinterMode</span>
-                </label>
+                    <label>
+                      <input type="checkbox" name="opentherm[options][coolingSupport]" value="true">
+                      <span data-i18n>settings.ot.options.coolingSupport</span>
+                    </label>

-                <label>
-                  <input type="checkbox" name="opentherm[options][heatingStateToSummerWinterMode]" value="true">
-                  <span data-i18n>settings.ot.options.heatingStateToSummerWinterMode</span>
-                </label>
+                    <label>
+                      <input type="checkbox" name="opentherm[options][summerWinterMode]" value="true">
+                      <span data-i18n>settings.ot.options.summerWinterMode</span>
+                    </label>

-                <label>
-                  <input type="checkbox" name="opentherm[options][ch2AlwaysEnabled]" value="true">
-                  <span data-i18n>settings.ot.options.ch2AlwaysEnabled</span>
-                </label>
+                    <label>
+                      <input type="checkbox" name="opentherm[options][heatingStateToSummerWinterMode]" value="true">
+                      <span data-i18n>settings.ot.options.heatingStateToSummerWinterMode</span>
+                    </label>

-                <label>
-                  <input type="checkbox" name="opentherm[options][heatingToCh2]" value="true">
-                  <span data-i18n>settings.ot.options.heatingToCh2</span>
-                </label>
+                    <label>
+                      <input type="checkbox" name="opentherm[options][ch2AlwaysEnabled]" value="true">
+                      <span data-i18n>settings.ot.options.ch2AlwaysEnabled</span>
+                    </label>

-                <label>
-                  <input type="checkbox" name="opentherm[options][dhwToCh2]" value="true">
-                  <span data-i18n>settings.ot.options.dhwToCh2</span>
-                </label>
+                    <label>
+                      <input type="checkbox" name="opentherm[options][heatingToCh2]" value="true">
+                      <span data-i18n>settings.ot.options.heatingToCh2</span>
+                    </label>

-                <label>
-                  <input type="checkbox" name="opentherm[options][dhwBlocking]" value="true">
-                  <span data-i18n>settings.ot.options.dhwBlocking</span>
-                </label>
+                    <label>
+                      <input type="checkbox" name="opentherm[options][dhwToCh2]" value="true">
+                      <span data-i18n>settings.ot.options.dhwToCh2</span>
+                    </label>

-                <label>
-                  <input type="checkbox" name="opentherm[options][maxTempSyncWithTargetTemp]" value="true">
-                  <span data-i18n>settings.ot.options.maxTempSyncWithTargetTemp</span>
-                </label>
+                    <label>
+                      <input type="checkbox" name="opentherm[options][dhwBlocking]" value="true">
+                      <span data-i18n>settings.ot.options.dhwBlocking</span>
+                    </label>

-                <label>
-                  <input type="checkbox" name="opentherm[options][getMinMaxTemp]" value="true">
-                  <span data-i18n>settings.ot.options.getMinMaxTemp</span>
-                </label>
+                    <label>
+                      <input type="checkbox" name="opentherm[options][dhwStateAsDhwBlocking]" value="true">
+                      <span data-i18n>settings.ot.options.dhwStateAsDhwBlocking</span>
+                    </label>

-                <label>
-                  <input type="checkbox" name="opentherm[options][ignoreDiagState]" value="true">
-                  <span data-i18n>settings.ot.options.ignoreDiagState</span>
-                </label>
+                    <label>
+                      <input type="checkbox" name="opentherm[options][maxTempSyncWithTargetTemp]" value="true">
+                      <span data-i18n>settings.ot.options.maxTempSyncWithTargetTemp</span>
+                    </label>

-                <label>
-                  <input type="checkbox" name="opentherm[options][autoFaultReset]" value="true">
-                  <span data-i18n>settings.ot.options.autoFaultReset</span>
-                </label>
+                    <label>
+                      <input type="checkbox" name="opentherm[options][getMinMaxTemp]" value="true">
+                      <span data-i18n>settings.ot.options.getMinMaxTemp</span>
+                    </label>

-                <label>
-                  <input type="checkbox" name="opentherm[options][autoDiagReset]" value="true">
-                  <span data-i18n>settings.ot.options.autoDiagReset</span>
-                </label>
+                    <label>
+                      <input type="checkbox" name="opentherm[options][ignoreDiagState]" value="true">
+                      <span data-i18n>settings.ot.options.ignoreDiagState</span>
+                    </label>

-                <label>
-                  <input type="checkbox" name="opentherm[options][setDateAndTime]" value="true">
-                  <span data-i18n>settings.ot.options.setDateAndTime</span>
-                </label>
+                    <label>
+                      <input type="checkbox" name="opentherm[options][autoFaultReset]" value="true">
+                      <span data-i18n>settings.ot.options.autoFaultReset</span>
+                    </label>

-                <label>
-                  <input type="checkbox" name="opentherm[options][immergasFix]" value="true">
-                  <span data-i18n>settings.ot.options.immergasFix</span>
-                </label>
+                    <label>
+                      <input type="checkbox" name="opentherm[options][autoDiagReset]" value="true">
+                      <span data-i18n>settings.ot.options.autoDiagReset</span>
+                    </label>

-                <hr />
-                <label>
-                  <input type="checkbox" name="opentherm[options][nativeHeatingControl]" value="true">
-                  <span data-i18n>settings.ot.nativeHeating.title</span><br />
-                  <small data-i18n>settings.ot.nativeHeating.note</small>
-                </label>
-              </fieldset>
+                    <label>
+                      <input type="checkbox" name="opentherm[options][setDateAndTime]" value="true">
+                      <span data-i18n>settings.ot.options.setDateAndTime</span>
+                    </label>

+                    <label>
+                      <input type="checkbox" name="opentherm[options][immergasFix]" value="true">
+                      <span data-i18n>settings.ot.options.immergasFix</span>
+                    </label>
+
+                    <hr />
+
+                    <label>
+                      <input type="checkbox" name="opentherm[options][nativeHeatingControl]" value="true">
+                      <span data-i18n>settings.ot.nativeHeating.title</span><br />
+                      <small data-i18n>settings.ot.nativeHeating.note</small>
+                    </label>
+                  </fieldset>
+                </div>
+              </details>
+              
+              <br />
              <button type="submit" data-i18n>button.save</button>
            </form>
          </div>
@@ -818,6 +902,7 @@
          setCheckboxValue("[name='opentherm[options][heatingToCh2]']", data.opentherm.options.heatingToCh2);
          setCheckboxValue("[name='opentherm[options][dhwToCh2]']", data.opentherm.options.dhwToCh2);
          setCheckboxValue("[name='opentherm[options][dhwBlocking]']", data.opentherm.options.dhwBlocking);
+          setCheckboxValue("[name='opentherm[options][dhwStateAsDhwBlocking]']", data.opentherm.options.dhwStateAsDhwBlocking);
          setCheckboxValue("[name='opentherm[options][maxTempSyncWithTargetTemp]']", data.opentherm.options.maxTempSyncWithTargetTemp);
          setCheckboxValue("[name='opentherm[options][getMinMaxTemp]']", data.opentherm.options.getMinMaxTemp);
          setCheckboxValue("[name='opentherm[options][ignoreDiagState]']", data.opentherm.options.ignoreDiagState);
@@ -874,6 +959,19 @@
          setInputValue("[name='heating[hysteresis]']", data.heating.hysteresis);
          setInputValue("[name='heating[turboFactor]']", data.heating.turboFactor);
          setInputValue("[name='heating[maxModulation]']", data.heating.maxModulation);
+          setInputValue("[name='heating[overheatProtection][highTemp]']", data.heating.overheatProtection.highTemp, {
+            "min": 0,
+            "max": data.system.unitSystem == 0 ? 100 : 212
+          });
+          setInputValue("[name='heating[overheatProtection][lowTemp]']", data.heating.overheatProtection.lowTemp, {
+            "min": 0,
+            "max": data.system.unitSystem == 0 ? 99 : 211
+          });
+          setInputValue("[name='heating[freezeProtection][lowTemp]']", data.heating.freezeProtection.lowTemp, {
+            "min": data.system.unitSystem == 0 ? 1 : 34,
+            "max": data.system.unitSystem == 0 ? 30 : 86
+          });
+          setInputValue("[name='heating[freezeProtection][thresholdTime]']", data.heating.freezeProtection.thresholdTime);
          setBusy('#heating-settings-busy', '#heating-settings', false);

          // DHW
@@ -886,14 +984,21 @@
            "max": data.system.unitSystem == 0 ? 100 : 212
          });
          setInputValue("[name='dhw[maxModulation]']", data.dhw.maxModulation);
+          setInputValue("[name='dhw[overheatProtection][highTemp]']", data.dhw.overheatProtection.highTemp, {
+            "min": 0,
+            "max": data.system.unitSystem == 0 ? 100 : 212
+          });
+          setInputValue("[name='dhw[overheatProtection][lowTemp]']", data.dhw.overheatProtection.lowTemp, {
+            "min": 0,
+            "max": data.system.unitSystem == 0 ? 99 : 211
+          });
          setBusy('#dhw-settings-busy', '#dhw-settings', false);

          // Emergency mode
-          setInputValue("[name='emergency[tresholdTime]']", data.emergency.tresholdTime);
          if (data.opentherm.options.nativeHeatingControl) {
            setInputValue("[name='emergency[target]']", data.emergency.target, {
              "min": data.system.unitSystem == 0 ? 5 : 41,
-              "max": data.system.unitSystem == 0 ? 40 : 86
+              "max": data.system.unitSystem == 0 ? 40 : 104
            });

          } else {
@@ -902,7 +1007,7 @@
              "max": data.heating.maxTemp,
            });
          }
-
+          setInputValue("[name='emergency[tresholdTime]']", data.emergency.tresholdTime);
          setBusy('#emergency-settings-busy', '#emergency-settings', false);

          // Equitherm
--- a/src_data/pages/upgrade.html
+++ b/src_data/pages/upgrade.html
@@ -21,6 +21,7 @@
          <li>
            <select id="lang" aria-label="Lang">
              <option value="en" selected>EN</option>
+              <option value="cn">CN</option>
              <option value="it">IT</option>
              <option value="ru">RU</option>
            </select>
--- a/src_data/styles/app.css
+++ b/src_data/styles/app.css
@@ -3,6 +3,10 @@
    --pico-block-spacing-vertical: calc(var(--pico-spacing) * 0.75);
    --pico-block-spacing-horizontal: calc(var(--pico-spacing) * 0.75);
  }
+
+  .logo {
+    font-size: 1.2rem;
+  }
 }

@media (min-width: 768px) {
@@ -10,6 +14,10 @@
    --pico-block-spacing-vertical: var(--pico-spacing);
    --pico-block-spacing-horizontal: var(--pico-spacing);
  }
+
+  .logo {
+    font-size: 1.25rem;
+  }
 }

@media (min-width: 1024px) {
@@ -17,6 +25,10 @@
    --pico-block-spacing-vertical: calc(var(--pico-spacing) * 1.25);
    --pico-block-spacing-horizontal: calc(var(--pico-spacing) * 1.25);
  }
+
+  .logo {
+    font-size: 1.25rem;
+  }
 }

@media (min-width: 1280px) {
@@ -25,6 +37,10 @@
    --pico-block-spacing-horizontal: calc(var(--pico-spacing) * 1.5);
  }

+  .logo {
+    font-size: 1.3rem;
+  }
+
  .container {
    max-width: 1000px;
  }
@@ -36,6 +52,10 @@
    --pico-block-spacing-horizontal: calc(var(--pico-spacing) * 1.75);
  }

+  .logo {
+    font-size: 1.3rem;
+  }
+
  .container {
    max-width: 1000px;
  }
@@ -111,7 +131,7 @@ tr.network:hover {
  border-radius: var(--pico-border-radius);
  color: var(--pico-code-kbd-color);
  font-weight: bolder;
-  font-size: 1.3rem;
+  /*font-size: 1.3rem;*/
  font-family: var(--pico-font-family-monospace);
 }

--- a/tools/esp32.py
+++ b/tools/esp32.py
@@ -23,10 +23,15 @@ Import("env")
 platform = env.PioPlatform()

 import sys
+import os
+import subprocess
 from os.path import join

-sys.path.append(join(platform.get_package_dir("tool-esptoolpy")))
-import esptool
+def normalize_paths(cmd):
+    for i, arg in enumerate(cmd):
+        if isinstance(arg, str) and '/' in arg:
+            cmd[i] = os.path.normpath(arg)
+    return cmd

 def esp32_create_combined_bin(source, target, env):
    print("Generating combined binary for serial flashing")
@@ -39,26 +44,21 @@ def esp32_create_combined_bin(source, target, env):
    sections = env.subst(env.get("FLASH_EXTRA_IMAGES"))
    firmware_name = env.subst("$BUILD_DIR/${PROGNAME}.bin")
    chip = env.get("BOARD_MCU")
-    flash_size = env.BoardConfig().get("upload.flash_size")
-    flash_freq = env.BoardConfig().get("build.f_flash", '40m')
-    flash_freq = flash_freq.replace('000000L', 'm')
-    flash_mode = env.BoardConfig().get("build.flash_mode", "dio")
-    memory_type = env.BoardConfig().get("build.arduino.memory_type", "qio_qspi")
-    if flash_mode == "qio" or flash_mode == "qout":
-        flash_mode = "dio"
-    if memory_type == "opi_opi" or memory_type == "opi_qspi":
-        flash_mode = "dout"
+    flash_size = env.BoardConfig().get("upload.flash_size", "4MB")
+    flash_mode = env["__get_board_flash_mode"](env)
+    flash_freq = env["__get_board_f_flash"](env)
+
    cmd = [
        "--chip",
        chip,
-        "merge_bin",
+        "merge-bin",
        "-o",
        new_file_name,
-        "--flash_mode",
+        "--flash-mode",
        flash_mode,
-        "--flash_freq",
+        "--flash-freq",
        flash_freq,
-        "--flash_size",
+        "--flash-size",
        flash_size,
    ]

@@ -71,9 +71,12 @@ def esp32_create_combined_bin(source, target, env):
    print(f" - {hex(app_offset)} | {firmware_name}")
    cmd += [hex(app_offset), firmware_name]

-    print('Using esptool.py arguments: %s' % ' '.join(cmd))
-
-    esptool.main(cmd)
+    # print('Using esptool.py arguments: %s' % ' '.join(cmd))
+    cmdline = [env.subst("$OBJCOPY")] + normalize_paths(cmd)
+    print('Command Line: %s' % cmdline)
+    result = subprocess.run(cmdline, text=True, check=False, stdout=subprocess.DEVNULL)
+    if result.returncode != 0:
+        print(f"esptool create firmware failed with exit code: {result.returncode}")


 env.AddPostAction("$BUILD_DIR/${PROGNAME}.bin", esp32_create_combined_bin)
Author	SHA1	Message	Date
Yurii	14826c10cd	chore: ``byte` `to` `uint8_t``	2025-09-23 04:03:36 +03:00
Yurii	28a5218b7c	fix: various fixes Found by PVS-Studio	2025-09-23 04:02:40 +03:00
Yurii	f3ba43adbd	docs: fix typo	2025-09-19 21:14:38 +03:00
Yurii	062c6714d1	chore: bump dependencies	2025-09-19 21:09:55 +03:00
Yurii	502f73db0e	chore: bump pioarduino/platform-espressif32 from 3.3.0 to 3.3.1	2025-09-19 21:06:17 +03:00
zedward	c2ee30d1ab	fix: added ``nodemcu_32_160mhz`` env, deadband usage in PID fixed (#176 ) * Small fixes: CPU limit for odemcu_32, deadbamd usage in PID * PR review fixes * Fix: remove spaces --------- Co-authored-by: Edward Zhuravlov <Edward.Zhuravlev@topsoft.by>	2025-09-19 21:00:11 +03:00
dependabot[bot]	9217bb7448	chore: bump actions/stale from 9 to 10 (#172 ) Bumps [actions/stale](https://github.com/actions/stale) from 9 to 10. - [Release notes](https://github.com/actions/stale/releases) - [Changelog](https://github.com/actions/stale/blob/main/CHANGELOG.md) - [Commits](https://github.com/actions/stale/compare/v9...v10) --- updated-dependencies: - dependency-name: actions/stale dependency-version: '10' dependency-type: direct:production update-type: version-update:semver-major ... Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>	2025-09-05 06:33:43 +03:00
Yurii	d694ae18c0	chore: bump version to 1.5.6	2025-08-21 19:34:07 +03:00
dependabot[bot]	0f4fa2e406	chore(deps): bump actions/checkout from 4 to 5 (#169 ) Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 5. - [Release notes](https://github.com/actions/checkout/releases) - [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md) - [Commits](https://github.com/actions/checkout/compare/v4...v5) --- updated-dependencies: - dependency-name: actions/checkout dependency-version: '5' dependency-type: direct:production update-type: version-update:semver-major ... Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>	2025-08-12 13:24:55 +03:00
Yurii	df2af928a5	chore: bump pioarduino/platform-espressif32 from 3.2.1 to 3.3.0	2025-08-04 07:08:37 +03:00
Yurii	3e6a2d93d4	chore: updated esp32.py Source: https://raw.githubusercontent.com/letscontrolit/ESPEasy/mega/tools/pio/post_esp32.py	2025-08-04 07:07:31 +03:00
Yurii	062468c6b1	chore: updated esp32.py to be compatible with new versions of esptool Source: https://raw.githubusercontent.com/letscontrolit/ESPEasy/mega/tools/pio/post_esp32.py	2025-07-04 04:12:06 +03:00
Yurii	530892dc09	chore: bump pioarduino/platform-espressif32 from 3.2.0 to 3.2.1	2025-07-04 04:10:06 +03:00
Yurii	c73f74ad45	chore: upd platformio.ini	2025-07-04 03:08:51 +03:00
Yurii	a67ff046b0	refactor: refactoring after #163	2025-07-04 03:00:41 +03:00
menyuguren	0f496fee42	feat: added Chinese locale by @menyuguren #163 * Add files via upload 支持中文 * fix typo --------- Co-authored-by: Yurii <34578544+Laxilef@users.noreply.github.com>	2025-07-04 02:55:09 +03:00
Yurii	e63a0dc7eb	refactor: improved freeze protection & overheat protection; added desc for OT options	2025-06-30 02:41:44 +03:00
Yurii	792c6a6668	chore: upd gitignore	2025-06-30 02:38:25 +03:00
Yurii	94f6f14795	refactor: fixed logo size on mobile devices	2025-06-30 02:38:00 +03:00
Yurii	47696a0721	refactor: added print to log channel 2 activity state #155	2025-06-28 20:16:19 +03:00
Yurii	5c4ad8cd07	chore: upd readme	2025-06-27 14:53:17 +03:00
Yurii	f6cfdf3263	feat: added freeze protection parameter for heating, removed forced start of heating in emergency mode #157	2025-06-27 00:28:38 +03:00
Yurii	58b0c18448	fix: added C/F temperature conversion in overheating protection	2025-06-20 02:46:25 +03:00
Yurii	b985275309	feat: added software overheating protection	2025-06-17 17:50:15 +03:00
Yurii	1eee184887	feat: added OT option dhwStateAsDhwBlocking For Baxi Slim with Bertelli	2025-06-16 01:04:07 +03:00
Yurii	ba03c9cda3	fix: last sensor was ignored	2025-06-08 03:10:10 +03:00