ACS ACR1281U-C8, Programming Manual

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ACR1281U-C8 – Application Programming Interface
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5.2. ACR120_Read
Reads a block.
High Level API :
DLLAPI INT16 AC_DECL
ACR120_Read( INT16 hReader,
UINT8 Block,
UINT8 pBlockData[16]);
Parameters Description
hReader Handle to the reader returned by AC_Open()
Block Block number
pblockData
Contains the data read. It is
AC_MIFARE_DATA_LEN(16) bytes long.
Return Value INT16 Result code. 0 means success.
Table 21 : ACR120_Read Command Description
Low Level Frame Structure:
Command: From PC to Reader (6 bytes)
Command Code
(1 byte)
Command Data Length
(1 bytes)
Instruction Code
(1 byte)
Data Length
(1 byte)
Data
(1 byte)
E0h 03h 06h 01h Block
Response: From Reader to PC (21 bytes) <<Success>>
Response Code
(1 byte)
Response Status
(2 bytes)
Response Data Length
(2 bytes)
Response Data
(16 bytes)
E1h INT16 (>=0) 0010h pBlockData
Or
Response: From Reader to PC (5 bytes) << Fail>>
Response Code
(1 byte)
Response Status
(2 bytes)
Response Data Length
(2 byes)
E1h INT16 (<0) 0000h