Reference

Library

• Arduino IDE
• Download and install the ID809 Library. (About how to install the library?)

Communication Protocol Description

• Communication Interface: UART

API Description

  /**
   * @brief Test whether the module is properly connected
   * @return true or false
   */
  bool isConnected();

  /**
   * @brief Detect whether the module is touched by a finger 
   * @return 1(Yes) or 0(No)
   */
  uint8_t detectFinger();

  /**
   * @brief Get the first registrable ID number
   * @return Registrable ID number or ERR_ID809
   */
  uint8_t getEmptyID();

  /**
   * @brief Check whether the ID has been registered
   * @return 0(Registered), 1(Not Registered) or ERR_ID809
   */
  uint8_t getStatusID(uint8_t ID);

  /**
   * @brief Get the number of registered users 
   * @return Number of registered users or ERR_ID809
   */
  uint8_t getEnrollCount();

  /**
   * @brief Get the list of registered users 
   * @return 0(succeed) or ERR_ID809
   */
   uint8_t getEnrolledIDList(uint8_t* list);

  /**
   * @brief Capture fingerprint
   * @return 0(succeed) or ERR_ID809
   */
  uint8_t collectionFingerprint(uint16_t timeout);

  /**
   * @brief Save fingerprint
   * @param Fingerprint ID
   * @return 0(succeed) or ERR_ID809
   */
  uint8_t storeFingerprint(uint8_t ID);

  /**
   * @brief Delete fingerprint
   * @param Finerprint ID or DELALL(delete all)
   * @return 0(succeed) or ERR_ID809
   */
  uint8_t delFingerprint(uint8_t ID);

  /**
   * @brief Match the fingerprint with all fingerprints
   * @return Successfully matched fingerprint, 0(Finerprint matching failed) or ERR_ID809
   */
  uint8_t search();

  /**
   * @brief Match the fingerprint with a designated fingerprint
   * @return Successfully matched fingerprint ID, 0(Finerprint matching failed) or ERR_ID809
   */
  uint8_t verify(uint8_t ID);

  /**
   * @brief Get error information
   * @return Text description of error information
   */
  String getErrorDescription();

  /*Set module baud rate, available range：
    e9600bps    e19200bps   e38400bps   e57600bps   e115200bps
       1           2            3          4            5
   */
  fingerprint.setBaudrate(fingerprint.e115200bps);

Other Supplementary Information

• SEN0542-CAD.zip