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Refactor bridge packet handling to use common magic number and size constants

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João Brázio 2025-09-08 11:15:28 +01:00
parent 7fca20475a
commit 1d25c87c57
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6 changed files with 40 additions and 37 deletions
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20
src/helpers/bridges/BridgeBase.h
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@ -21,6 +21,26 @@ class BridgeBase : public AbstractBridge {
public:
virtual ~BridgeBase() = default;
/**
* @brief Common magic number used by all bridge implementations for packet identification
*
* This magic number is placed at the beginning of bridge packets to identify
* them as mesh bridge packets and provide frame synchronization.
*/
static constexpr uint16_t BRIDGE_PACKET_MAGIC = 0xC03E;
/**
* @brief Common field sizes used by bridge implementations
*
* These constants define the size of common packet fields used across bridges.
* BRIDGE_MAGIC_SIZE is used by all bridges for packet identification.
* BRIDGE_LENGTH_SIZE is used by bridges that need explicit length fields (like RS232).
* BRIDGE_CHECKSUM_SIZE is used by all bridges for Fletcher-16 checksums.
*/
static constexpr uint16_t BRIDGE_MAGIC_SIZE = sizeof(BRIDGE_PACKET_MAGIC);
static constexpr uint16_t BRIDGE_LENGTH_SIZE = sizeof(uint16_t);
static constexpr uint16_t BRIDGE_CHECKSUM_SIZE = sizeof(uint16_t);
protected:
/** Packet manager for allocating and queuing mesh packets */
mesh::PacketManager *_mgr;