User's Manual

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Command description
Argument
Size
Value
Description
Command ID
1
0x6C
MFDF_CREATE_DATA_FILE
File number
1
X
File number inside application
Access rights
2
X
Please refer to the NXP documentation for more information
File size
3
X
file size, LSB first
Backup file 1
X
0x00
–
Standard file
0x01 – Backup file
Response description
ACK
1
0x00
Command ID
1
0x6B
MFDF_CREATE_DATA_FILE
Example:
HOST=>READER: 0x6C – MFDF_CREATE_DATA_FILE
0x01 – file number
0xEE 0xEE – access rights
0x40 0x00 0x00 – file 64-bytes long
0x01 – backup file
READER=>HOST: 0x00 – ACK byte
0x6C – related command code MFDF_CREATE_DATA_FILE
3.5.14 Write data (0x6D)
This command writes data to standard data files or backup data files. It takes three arguments: the file
number, the offset in the file where data should be stored, and the data bytes to be written. To store data
on the TAG, a commit transaction command is required.
Command description
Argument
Size
Value
Description
Command ID
1
0x6D
MFDF_WRITE_DATA
File number
1
X
File number inside application
File offset
3
X
file offset, 3
-
bytes LSB value
Data
N
X
Data
bytes to write
Response description
ACK
1
0x00
Command ID
1
0x6D
MFDF_WRITE_DATA
Example:
HOST=>READER: 0x6D – MFDF_WRITE_DATA
0x01 – file number
0x00 0x00 0x00 – zero offset
0x01 0x02 0x03 0x04 0x05 0x06 0x07 - data