5/1/2023 0 Comments Nfc write sector 0 command![]() ![]() ![]() The last 4 bytes are used for a 1-byte address, which is stored 4 times (twice non-inverted, and twice inverted).ĭata blocks configured as "Value Blocks" have the following structure:Ĭopy Code It is stored twice non-inverted, and once inverted. Value blocks allow performing electronic purse functions (valid commands are: read, write, increment, decrement, restore, transfer).Įach Value block contains a single signed 32-bit value, and this value is stored 3 times for data integrity and security reasons. You can easily store text input, store four 32-bit integer values, a 16 character uri, etc.Īn alternative to storing random data in the 16 byte-wide blocks is to configure them as "Value Blocks". You are free to use the 16 data bytes in any way you wish. For more information in using Keys to access the clock contents, see Accessing Data Blocks further below.ĭata blocks are 16 bytes wide and, depending on the permissions set in the access bits, can be read from and written to. ![]()
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