MIFARE® Card Programming - µFR Simplest Software SDK

• ReaderOpen: Opens a port of connected RFID reader. In the case of multi-thread applications, developers must be careful to synchronize access to the reader’s resources to avoid unforeseen situations.
• ReaderClose: Closes the reader’s port. This enables access to the RFID reader from other processes.
• GetCardId: This function returns the type identifier and card serial number placed into the RFID NFC reader.

LinearWrite

This function is used for writing data to the card using the emulation of linear address space. The method for proving authenticity is determined by the suffix in the names of the function:

• aucData – Pointer to the sequence of bytes containing data for writing
• usLinearAddress – Linear address of the card where the data writing is intended
• usDataLength – Number of bytes for the entry. In aucData, a minimum usDataLength bytes must be allocated before calling the function
• lpusBytesWritten – Pointer to an “unsigned short” type variable, where the number of successfully read bytes from the card is written. If the entry is completed this data is equal to the usDataLength parameter. If there was an error in writing some of the blocks, the function returns the number of successfully written bytes over this parameter.
• ucAuthKey – This parameter defines whether to perform authentication with A key or key B. It can have two values, namely: AUTHENT1A (0x60) or AUTHENT1B (0x61).
• ucReaderKeyIndex – The default method of authentication (when the functions without a suffix are used) performs the authenticity proving by using the selected key index from the RFID reader. In the linear address mode, this applies to all sectors that are written.