Update project files and headers: ensure consistency and maintainability across the codebase.

include/rfid_handler.h

@@ -20,10 +20,37 @@ typedef struct
 } UartThreadArgs;
 
 // UART handler thread
+/**
+ * @brief Thread function to listen for UART data.
+ *
+ * This function is intended to be run as a separate thread. It continuously listens
+ * for incoming data on a UART interface and processes the received data accordingly.
+ *
+ * @param arg Pointer to arguments required by the UART listener (typically a struct with UART configuration).
+ * @return void* Returns NULL upon thread completion.
+ */
 void *uartListener(void *arg);
 
+/**
+ * @brief Parses an incoming RFID packet.
+ *
+ * This function processes the provided packet and extracts relevant information.
+ *
+ * @param _packet Pointer to the incoming packet data (array of BYTE).
+ * @return uint16_t Parsed value.
+ */
 uint16_t parseIncommingPacket(BYTE *_packet);
 
+/**
+ * @brief Sends a data packet to a device over the specified UART interface.
+ *
+ * This function constructs and transmits a packet containing information about a person (node)
+ * and a specified state to a device connected via UART.
+ *
+ * @param _uart The UART interface identifier to use for transmission.
+ * @param _person Pointer to a node_t structure representing the person whose data is to be sent.
+ * @param state The state value to include in the packet.
+ */
 void sendPacketToDevice(int _uart, node_t *_person, BYTE state);
 
 #endif