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dbc_parser.h

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+// dbc_parser.h - DBC File Parser for CAN Database
+
+#ifndef DBC_PARSER_H
+#define DBC_PARSER_H
+
+#include <Arduino.h>
+
+// Maximum number of messages and signals
+#define MAX_DBC_MESSAGES  100
+#define MAX_DBC_SIGNALS   500
+
+// Signal structure
+struct DbcSignal {
+  char name[32];
+  uint32_t startBit;
+  uint32_t length;
+  bool isLittleEndian;
+  bool isSigned;
+  float factor;
+  float offset;
+  float min;
+  float max;
+  char unit[8];
+  uint32_t messageId;
+};
+
+// Message structure
+struct DbcMessage {
+  uint32_t id;
+  char name[32];
+  uint8_t dlc;
+  uint16_t signalCount;
+  uint16_t signalStartIndex;
+};
+
+// DBC database
+struct DbcDatabase {
+  DbcMessage messages[MAX_DBC_MESSAGES];
+  DbcSignal signals[MAX_DBC_SIGNALS];
+  uint16_t messageCount;
+  uint16_t signalCount;
+  bool loaded;
+};
+
+extern DbcDatabase dbcDB;
+
+// Parse DBC file content
+bool parseDBC(const char* content);
+
+// Get message by ID
+DbcMessage* getMessageById(uint32_t id);
+
+// Get signal from message by name
+DbcSignal* getSignalByName(DbcMessage* msg, const char* name);
+
+// Get all signals for a message
+uint16_t getSignalsForMessage(uint32_t msgId, DbcSignal** signals);
+
+// Extract signal value from raw CAN data
+float extractSignalValue(const uint8_t* data, const DbcSignal* signal);
+
+// Clear database
+void clearDBC();
+
+// Load DBC from SD card
+bool loadDBCFromSD(const char* filename);
+
+// Save parsed DBC info to JSON for web
+void getDBCSummary(char* buffer, size_t bufferSize);
+
+#endif // DBC_PARSER_H