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IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef NFC_TYPE_2_TAG_PARSER_H__ #define NFC_TYPE_2_TAG_PARSER_H__ #include #include "nfc_tlv_block.h" #include "sdk_errors.h" #ifdef __cplusplus extern "C" { #endif /** * @defgroup nfc_type_2_tag Type 2 Tag * @{ * @ingroup nfc_type_2_tag_parser * * @brief Descriptor for a Type 2 Tag. * */ /** * @brief Descriptor for the internal bytes of a Type 2 Tag. */ typedef struct { uint8_t manufacturer_id; ///< Manufacturer ID (the most significant byte of the UID/serial number). uint16_t serial_number_part_1; ///< Bytes 5-4 of the tag UID. uint8_t check_byte_0; ///< First block check character byte (XOR of the cascade tag byte, manufacturer ID byte, and the serial_number_part_1 bytes). uint32_t serial_number_part_2; ///< Bytes 3-0 of the tag UID. uint8_t check_byte_1; ///< Second block check character byte (XOR of the serial_number_part_2 bytes). uint8_t internal; ///< Tag internal bytes. } type_2_tag_serial_number_t; /** * @brief Descriptor for the Capability Container (CC) bytes of a Type 2 Tag. */ typedef struct { uint8_t major_version; ///< Major version of the supported Type 2 Tag specification. uint8_t minor_version; ///< Minor version of the supported Type 2 Tag specification. uint16_t data_area_size; ///< Size of the data area in bytes. uint8_t read_access; ///< Read access for the data area. uint8_t write_access; ///< Write access for the data area. } type_2_tag_capability_container_t; /** * @brief Type 2 Tag descriptor. */ typedef struct { type_2_tag_serial_number_t sn; ///< Values within the serial number area of the tag. uint16_t lock_bytes; ///< Value of the lock bytes. type_2_tag_capability_container_t cc; ///< Values within the Capability Container area of the tag. uint16_t const max_tlv_blocks; ///< Maximum number of TLV blocks that can be stored. tlv_block_t * p_tlv_block_array; ///< Pointer to the array for TLV blocks. uint16_t tlv_count; ///< Number of TLV blocks stored in the Type 2 Tag. } type_2_tag_t; /** * @brief Macro for creating and initializing a Type 2 Tag descriptor. * * This macro creates and initializes a static instance of a @ref type_2_tag_t structure and * an array of @ref tlv_block_t descriptors. * * Use the macro @ref NFC_TYPE_2_TAG_DESC to access the Type 2 Tag descriptor instance. * * @param[in] NAME Name of the created descriptor instance. * @param[in] MAX_BLOCKS Maximum number of @ref tlv_block_t descriptors that can be stored in the array. * */ #define NFC_TYPE_2_TAG_DESC_DEF(NAME, MAX_BLOCKS) \ static tlv_block_t NAME##_tlv_block_array[MAX_BLOCKS]; \ static type_2_tag_t NAME##_type_2_tag = \ { \ .max_tlv_blocks = MAX_BLOCKS, \ .p_tlv_block_array = NAME##_tlv_block_array, \ .tlv_count = 0 \ } /** * @brief Macro for accessing the @ref type_2_tag_t instance that was created * with @ref NFC_TYPE_2_TAG_DESC_DEF. */ #define NFC_TYPE_2_TAG_DESC(NAME) (NAME##_type_2_tag) #define T2T_NFC_FORUM_DEFINED_DATA 0xE1 ///< Value indicating that the Type 2 Tag contains NFC Forum defined data. #define T2T_UID_BCC_CASCADE_BYTE 0x88 ///< Value used for calculating the first BCC byte of a Type 2 Tag serial number. #define T2T_SUPPORTED_MAJOR_VERSION 1 ///< Supported major version of the Type 2 Tag specification. #define T2T_SUPPORTED_MINOR_VERSION 2 ///< Supported minor version of the Type 2 Tag specification. #define T2T_BLOCK_SIZE 4 ///< Type 2 Tag block size in bytes. #define T2T_CC_BLOCK_OFFSET 12 ///< Offset of the Capability Container area in the Type 2 Tag. #define T2T_FIRST_DATA_BLOCK_OFFSET 16 ///< Offset of the data area in the Type 2 Tag. /** * @} */ /** * @defgroup nfc_type_2_tag_parser NFC Type 2 Tag parser * @{ * @ingroup nfc_t2t * * @brief Parser for Type 2 Tag data. * */ /** * @brief Function for clearing the @ref type_2_tag_t structure. * * @param[in,out] p_type_2_tag Pointer to the structure that should be cleared. * */ void type_2_tag_clear(type_2_tag_t * p_type_2_tag); /** * @brief Function for parsing raw data read from a Type 2 Tag. * * This function parses the header and the following TLV blocks of a Type 2 Tag. The data is read * from a buffer and stored in a @ref type_2_tag_t structure. * * @param[out] p_type_2_tag Pointer to the structure that will be filled with parsed data. * @param[in] p_raw_data Pointer to the buffer with raw data from the tag (should * point at the first byte of the first block of the tag). * * @retval NRF_SUCCESS If the data was parsed successfully. * @retval NRF_ERROR_NO_MEM If there is not enough memory to store all of the TLV blocks. * @retval Other If an error occurred during the parsing operation. * */ ret_code_t type_2_tag_parse(type_2_tag_t * p_type_2_tag, uint8_t * p_raw_data); /** * @brief Function for printing parsed contents of the Type 2 Tag. * * @param[in] p_type_2_tag Pointer to the structure that should be printed. * */ void type_2_tag_printout(type_2_tag_t * p_type_2_tag); /** * @} */ #ifdef __cplusplus } #endif #endif /* NFC_TYPE_2_TAG_PARSER_H__ */