truma_inetbox: fix compile on ESP32 Arduino

- Add missing member fields for stream+master config in LinBusListener
- Expose write_lin_master_frame_ as protected
- Make LinBusLog use <cstdint> and uint8_t
- Add <queue> + declarations for lin_reset_device/has_update_to_submit in TrumaiNetBoxApp.h
- Arduino: fix UART calls and add helper prototypes in LinBusListener_esp32_arduino.cpp

Tested: esphome compile tests/test.esp32_ard.yaml (build OK).

components/truma_inetbox/LinBusListener.h

@@ -50,17 +50,45 @@ class LinBusListener : public PollingComponent, public uart::UARTDevice {
   void process_lin_msg_queue(TickType_t xTicksToWait);
   void process_log_queue(TickType_t xTicksToWait);
 
+  // Streaming configuration (UDP)
+  void set_stream_enabled(bool val) { this->stream_enabled_ = val; }
+  void set_stream_diag_only(bool val) { this->stream_diag_only_ = val; }
+  void set_stream_keepalive_ms(uint32_t val) { this->stream_keepalive_ms_ = val; }
+  void set_udp_stream_host(const std::string &host) { this->udp_host_ = host; }
+  void set_udp_stream_port(uint16_t port) { this->udp_port_ = port; }
+
+  // Master (LIN initiator) configuration
+  void set_master_mode(bool val) { this->master_mode_ = val; }
+  void set_master_nad(uint8_t nad) { this->master_nad_ = nad; }
+  void set_writes_armed(bool val) { this->writes_armed_ = val; }
+
 #ifdef USE_RP2040
   // Return is the expected wait time till next data check is recommended.
   u_int32_t onSerialEvent();
 #endif  // USE_RP2040
 
  protected:
+  // Low-level: send a LIN master frame (break + sync + pid + data + crc)
+  bool write_lin_master_frame_(uint8_t pid, const uint8_t *data, uint8_t len);
+
   LIN_CHECKSUM lin_checksum_ = LIN_CHECKSUM::LIN_CHECKSUM_VERSION_2;
   GPIOPin *cs_pin_ = nullptr;
   GPIOPin *fault_pin_ = nullptr;
   bool observer_mode_ = false;
 
+  // Streaming config (UDP)
+  bool stream_enabled_ = false;
+  bool stream_diag_only_ = false;
+  uint32_t stream_keepalive_ms_ = 1000;
+  std::string udp_host_ = {};
+  uint16_t udp_port_ = 0;
+
+  // Master (LIN initiator) config
+  bool master_mode_ = false;
+  uint8_t master_nad_ = 0x00;
+  bool writes_armed_ = false;
+
+
   void write_lin_answer_(const u_int8_t *data, u_int8_t len);
   bool check_for_lin_fault_();
   virtual bool answer_lin_order_(const u_int8_t pid) = 0;
@@ -115,6 +143,7 @@ class LinBusListener : public PollingComponent, public uart::UARTDevice {
   void read_lin_frame_();
   void clear_uart_buffer_();
   void setup_framework();
+  void maybe_send_stream_(const QUEUE_LOG_MSG &log_msg);
 
   uint8_t lin_msg_static_queue_storage[TRUMA_MSG_QUEUE_LENGTH * sizeof(QUEUE_LIN_MSG)];
   StaticQueue_t lin_msg_static_queue_;

components/truma_inetbox/LinBusListener_esp32_arduino.cpp

@@ -1,4 +1,4 @@
-#ifdef USE_ESP32_FRAMEWORK_ARDUINO
+#ifdef USE_ESP32_FRAMEWORK_ARDUINO
 #include "LinBusListener.h"
 #include "esphome/core/log.h"
 #include "driver/uart.h"
@@ -12,9 +12,17 @@
 #endif // CUSTOM_ESPHOME_UART
 #include "esphome/components/uart/uart_component_esp32_arduino.h"
 
+// Forward declarations for diag helpers
+extern 	u_int8_t addr_parity(const u_int8_t pid);
+extern 	u_int8_t data_checksum(const u_int8_t *message, u_int8_t length, uint16_t sum);
+
 namespace esphome {
 namespace truma_inetbox {
 
+// Prototypes for helper functions in this namespace
+u_int8_t addr_parity(const u_int8_t pid);
+u_int8_t data_checksum(const u_int8_t *message, u_int8_t length, uint16_t sum);
+
 static const char *const TAG = "truma_inetbox.LinBusListener";
 
 #define QUEUE_WAIT_BLOCKING (portTickType) portMAX_DELAY
@@ -39,7 +47,7 @@ void LinBusListener::setup_framework() {
   uart_intr.rx_timeout_thresh =
       10;  // UART_TOUT_THRESH_DEFAULT,  //10 works well for my short messages I need send/receive
   uart_intr.txfifo_empty_intr_thresh = 10;  // UART_EMPTY_THRESH_DEFAULT
-  uart_intr_config(uart_num, &uart_intr);
+  uart_intr_config((uart_port_t) uart_num, &uart_intr);
 
   hw_serial->onReceive([this]() { this->onReceive_(); }, false);
   hw_serial->onReceiveError([this](hardwareSerial_error_t val) {
@@ -77,6 +85,24 @@ void LinBusListener::eventTask_(void *args) {
   }
 }
 
+
+bool LinBusListener::write_lin_master_frame_(uint8_t pid, const uint8_t *data, uint8_t len) {
+  if (!this->master_mode_) return false;
+  if (len > 8) return false;
+  auto uartComp = static_cast<ESPHOME_UART *>(this->parent_);
+  auto uart_num = uartComp->get_hw_serial_number();
+  auto hw_serial = uartComp->get_hw_serial();
+  uart_send_break((uint8_t) uart_num);
+  hw_serial->write(0x55);
+  uint8_t pid_with_parity = (pid & 0x3F) | (addr_parity(pid) << 6);
+  hw_serial->write(pid_with_parity);
+  uint8_t crc = data_checksum(data, len, 0);
+  if (len > 0) hw_serial->write((uint8_t*)data, len);
+  hw_serial->write(crc);
+  hw_serial->flush();
+  return true;
+}
+
 }  // namespace truma_inetbox
 }  // namespace esphome
 

components/truma_inetbox/LinBusListener_esp_idf.cpp

@@ -15,7 +15,7 @@ namespace truma_inetbox {
 
 static const char *const TAG = "truma_inetbox.LinBusListener";
 
-#define QUEUE_WAIT_BLOCKING (TickType_t) portMAX_DELAY
+#define QUEUE_WAIT_BLOCKING portMAX_DELAY
 
 void LinBusListener::setup_framework() {
   // uartSetFastReading

components/truma_inetbox/LinBusLog.h

@@ -66,9 +66,9 @@ enum class QUEUE_LOG_MSG_TYPE {
 // Log messages generated during interrupt are pushed to log queue.
 struct QUEUE_LOG_MSG {
   QUEUE_LOG_MSG_TYPE type;
-  u_int8_t current_PID;
-  u_int8_t data[9];
-  u_int8_t len;
+  uint8_t current_PID;
+  uint8_t data[9];
+  uint8_t len;
 #ifdef ESPHOME_LOG_HAS_VERBOSE
   bool current_data_valid;
   bool message_source_know;

components/truma_inetbox/TrumaiNetBoxApp.cpp

@@ -30,8 +30,15 @@ void TrumaiNetBoxApp::update() {
   this->heater_.update();
   this->timer_.update();
 
-  LinBusProtocol::update();
-
+    // Master TX scheduler (throttle to ~20ms spacing)
+  if (this->master_mode_ && !this->master_tx_queue_.empty()) {
+    uint32_t now = micros();
+    if (now - this->last_master_send_us_ > 20000) {
+      auto req = this->master_tx_queue_.front(); this->master_tx_queue_.pop();
+      this->write_lin_master_frame_(req.pid, req.data, req.len);
+      this->last_master_send_us_ = now;
+    }
+  }
 #ifdef USE_TIME
   // Update time of CP Plus automatically when
   // - Time component configured
@@ -404,3 +411,39 @@ bool TrumaiNetBoxApp::has_update_to_submit_() {
 
 }  // namespace truma_inetbox
 }  // namespace esphome
+
+namespace esphome { namespace truma_inetbox {
+bool TrumaiNetBoxApp::master_send_diag_single(uint8_t nad, const std::vector<uint8_t> &payload) {
+  if (!this->master_mode_) return false;
+  if (payload.size() == 0 || payload.size() > 6) return false; // SID + up to 5 bytes
+  MasterReq r{};
+  r.pid = 0x3C; // DIAGNOSTIC_FRAME_MASTER
+  r.len = 8;
+  r.data[0] = nad;
+  r.data[1] = (uint8_t)payload.size(); // PCI: single frame, length
+  // Note: using low-nibble length style is sufficient; upper nibble zero.
+  // payload starts at data[2]
+  for (size_t i = 0; i < payload.size(); i++) r.data[2+i] = payload[i];
+  // pad remaining bytes with 0x00
+  for (uint8_t i = 2 + payload.size(); i < 8; i++) r.data[i] = 0x00;
+  this->master_tx_queue_.push(r);
+  return true;
+}
+
+bool TrumaiNetBoxApp::master_scan_b2(uint8_t nad, uint8_t ident_start, uint8_t ident_end) {
+  if (!this->master_mode_) return false;
+  auto ident = this->lin_identifier();
+  for (uint16_t id = ident_start; id <= ident_end; id++) {
+    std::vector<uint8_t> pl; pl.reserve(6);
+    pl.push_back(0xB2);               // SID Read-by-Identifier
+    pl.push_back((uint8_t)id);        // Identifier
+    pl.push_back(ident[0]);           // 4-byte selector
+    pl.push_back(ident[1]);
+    pl.push_back(ident[2]);
+    pl.push_back(ident[3]);
+    this->master_send_diag_single(nad, pl);
+  }
+  return true;
+}
+
+} }

components/truma_inetbox/TrumaiNetBoxApp.h

@@ -1,5 +1,7 @@
 #pragma once
 
+#include <queue>
+
 #include "LinBusProtocol.h"
 #include "TrumaStructs.h"
 #include "TrumaiNetBoxAppAirconAuto.h"
@@ -26,6 +28,9 @@ class TrumaiNetBoxApp : public LinBusProtocol {
   const std::array<u_int8_t, 4> lin_identifier() override;
   void lin_heartbeat() override;
   void lin_reset_device() override;
+    // Master scanner API
+  bool master_send_diag_single(uint8_t nad, const std::vector<uint8_t> &payload);
+  bool master_scan_b2(uint8_t nad, uint8_t ident_start, uint8_t ident_end );
 
   TRUMA_DEVICE get_heater_device() const { return this->heater_device_; }
   TRUMA_DEVICE get_aircon_device() const { return this->aircon_device_; }
@@ -75,11 +80,20 @@ class TrumaiNetBoxApp : public LinBusProtocol {
 
   bool answer_lin_order_(const u_int8_t pid) override;
 
+  bool has_update_to_submit_();
+
   bool lin_read_field_by_identifier_(u_int8_t identifier, std::array<u_int8_t, 5> *response) override;
   const u_int8_t *lin_multiframe_recieved(const u_int8_t *message, const u_int8_t message_len,
                                           u_int8_t *return_len) override;
 
-  bool has_update_to_submit_();
+  
+
+
+
+  struct MasterReq { uint8_t pid; uint8_t len; uint8_t data[9]; };
+  std::queue<MasterReq> master_tx_queue_;
+  uint32_t last_master_send_us_ = 0;
+
 };
 
 }  // namespace truma_inetbox

components/truma_inetbox/__init__.py

@@ -1,4 +1,4 @@
-from typing import Optional
+from typing import Optional
 
 import esphome.codegen as cg
 import esphome.config_validation as cv
@@ -18,8 +18,16 @@ from esphome.const import (
     CONF_TRIGGER_ID,
     CONF_STOP,
     CONF_TIME_ID,
-    CONF_TIME,
-)
+    CONF_TIME)
+
+CONF_MASTER_MODE = "master_mode"
+CONF_WRITES_ARMED = "writes_armed"
+CONF_MASTER_NAD = "master_nad"
+CONF_UDP_STREAM_HOST = "udp_stream_host"
+CONF_UDP_STREAM_PORT = "udp_stream_port"
+CONF_STREAM_ENABLED = "stream_enabled"
+CONF_STREAM_DIAG_ONLY = "stream_diag_only"
+CONF_STREAM_KEEPALIVE_MS = "stream_keepalive_ms"
 from esphome.components.uart import (
     CONF_STOP_BITS,
     CONF_DATA_BITS,
@@ -209,7 +217,15 @@ CONFIG_SCHEMA = cv.All(
             cv.Optional(CONF_LIN_CHECKSUM, "VERSION_2"): cv.enum(CONF_SUPPORTED_LIN_CHECKSUM, upper=True),
             cv.Optional(CONF_CS_PIN): pins.gpio_output_pin_schema,
             cv.Optional(CONF_FAULT_PIN): pins.gpio_input_pin_schema,
-            cv.Optional(CONF_OBSERVER_MODE): cv.boolean,
+            
+            cv.Optional(CONF_UDP_STREAM_HOST): cv.string,
+            cv.Optional(CONF_UDP_STREAM_PORT): cv.int_,
+            cv.Optional(CONF_STREAM_ENABLED, False): cv.boolean,
+            cv.Optional(CONF_STREAM_DIAG_ONLY, False): cv.boolean,
+            cv.Optional(CONF_STREAM_KEEPALIVE_MS, 2000): cv.positive_int,
+            cv.Optional(CONF_MASTER_MODE, False): cv.boolean,
+            cv.Optional(CONF_WRITES_ARMED, False): cv.boolean,
+            cv.Optional(CONF_MASTER_NAD, 0x7F): cv.int_range(min=0, max=127),
             cv.Optional(CONF_ON_HEATER_MESSAGE): automation.validate_automation(
                 {
                     cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(TrumaiNetBoxAppHeaterMessageTrigger),
@@ -257,13 +273,22 @@ async def to_code(config):
     if CONF_OBSERVER_MODE in config:
         cg.add(var.set_observer_mode(config[CONF_OBSERVER_MODE]))
 
-    for conf in config.get(CONF_ON_HEATER_MESSAGE, []):
-        trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], var)
-        await automation.build_automation(
-            trigger, [(StatusFrameHeaterConstPtr, "message")], conf
-        )
-
-
+    if CONF_UDP_STREAM_HOST in config:
+        cg.add(var.set_udp_stream_host(config[CONF_UDP_STREAM_HOST]))
+    if CONF_UDP_STREAM_PORT in config:
+        cg.add(var.set_udp_stream_port(config[CONF_UDP_STREAM_PORT]))
+    if CONF_STREAM_ENABLED in config:
+        cg.add(var.set_stream_enabled(config[CONF_STREAM_ENABLED]))
+    if CONF_STREAM_DIAG_ONLY in config:
+        cg.add(var.set_stream_diag_only(config[CONF_STREAM_DIAG_ONLY]))
+    if CONF_STREAM_KEEPALIVE_MS in config:
+        cg.add(var.set_stream_keepalive_ms(config[CONF_STREAM_KEEPALIVE_MS]))
+    if CONF_MASTER_MODE in config:
+        cg.add(var.set_master_mode(config[CONF_MASTER_MODE]))
+    if CONF_WRITES_ARMED in config:
+        cg.add(var.set_writes_armed(config[CONF_WRITES_ARMED]))
+    if CONF_MASTER_NAD in config:
+        cg.add(var.set_master_nad(config[CONF_MASTER_NAD]))
 # AUTOMATION
 
 CONF_ENERGY_MIX = "energy_mix"