Initialisation depot

include/Config.h

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+/**
+ * @file Config.h
+ * @brief Configuration management for the Locomotive Test Bench
+ * 
+ * This module handles persistent storage of WiFi and system settings
+ * using ESP32's Preferences library (NVS - Non-Volatile Storage).
+ * 
+ * @author Locomotive Test Bench Project
+ * @date 2025
+ */
+
+#ifndef CONFIG_H
+#define CONFIG_H
+
+#include <Arduino.h>
+#include <Preferences.h>
+
+/**
+ * @struct WiFiConfig
+ * @brief WiFi configuration parameters
+ * 
+ * Stores both Access Point and Client mode settings.
+ */
+struct WiFiConfig {
+    String ssid;        ///< WiFi network SSID (Client mode)
+    String password;    ///< WiFi network password (Client mode)
+    bool isAPMode;      ///< True = AP mode, False = Client mode
+    String apSSID;      ///< Access Point SSID
+    String apPassword;  ///< Access Point password (min 8 characters)
+};
+
+/**
+ * @struct SystemConfig
+ * @brief System operation configuration
+ * 
+ * Stores current control mode and locomotive parameters.
+ */
+struct SystemConfig {
+    bool isDCCMode;         ///< True = DCC digital, False = DC analog
+    uint16_t dccAddress;    ///< DCC locomotive address (1-10239)
+    uint8_t speed;          ///< Speed setting (0-100%)
+    uint8_t direction;      ///< Direction: 0 = reverse, 1 = forward
+    uint32_t dccFunctions;  ///< Bit field for DCC functions F0-F28
+};
+
+/**
+ * @class Config
+ * @brief Configuration manager with persistent storage
+ * 
+ * Manages all configuration parameters and provides persistent
+ * storage using ESP32's NVS (Non-Volatile Storage) via Preferences.
+ * 
+ * @note All settings are automatically saved to flash memory
+ * and persist across reboots.
+ */
+class Config {
+public:
+    /**
+     * @brief Constructor - initializes with default values
+     */
+    Config();
+    
+    /**
+     * @brief Initialize preferences and load saved settings
+     * 
+     * Must be called during setup() before using configuration.
+     * Loads previously saved settings from NVS.
+     */
+    void begin();
+    
+    /**
+     * @brief Save current configuration to NVS
+     * 
+     * Writes all WiFi and system settings to persistent storage.
+     * Should be called after any configuration changes.
+     */
+    void save();
+    
+    /**
+     * @brief Load configuration from NVS
+     * 
+     * Reads previously saved settings. Called automatically
+     * by begin(), but can be called manually to reload.
+     */
+    void load();
+    
+    /**
+     * @brief Reset all settings to defaults
+     * 
+     * Clears all stored preferences and resets to factory defaults.
+     * Use with caution - all saved settings will be lost.
+     */
+    void reset();
+    
+    WiFiConfig wifi;      ///< WiFi configuration settings
+    SystemConfig system;  ///< System operation settings
+
+private:
+    Preferences preferences;  ///< ESP32 NVS preferences object
+};
+
+#endif