ACS ACR122T, Руководство по программированию

Страница: 16 / 45

ACR122T – Application Programming Interface
info@acs.com.hk
Version 2.02
www.acs.com.hk
Page 16 of 45
5.3. Read Binary Blocks
The “Read Binary Blocks command” is used for retrieving a “data blocks” from the PICC. The data
block/trailer block must be authenticated first.
Read Binary APDU Format (5 Bytes)
Command Class INS P1 P2 Le
Read Binary Blocks FFh B0h 00h Block Number Number of Bytes to Read
Where:
Block Number: 1 Byte. The block to be accessed
Number of Bytes to Read: 1 Byte. Maximum 16 bytes
Read Binary Block Response Format (N + 2 Bytes)
Response Data Out
Result 0 <= N <= 16 SW1 SW2
Response Codes
Results SW1 SW2 Meaning
Success 90 00h The operation completed successfully.
Error 63 00h The operation failed.
Example:
1. Read 16 bytes from the binary block 0x04h (Mifare 1K or 4K)
APDU = {FF B0 00 04 10h}
2. Read 4 bytes from the binary Page 0x04h (Mifare Ultralight)
APDU = {FF B0 00 04 04h}
3. Read 16 bytes starting from the binary Page 0x04h (Mifare Ultralight) (Pages 4, 5, 6 and 7
will be read)
APDU = {FF B0 00
04 10h}