ACS ACR1281U-C8, Programming Manual

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ACR1281U-C8 – Application Programming Interface
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3.8. ACR120_DirectReceive
Directly receives data from the Mifare® Chip.
High Level API :
DLLAPI INT16 AC_DECL
ACR120_DirectReceive(UINT16 hReader,
UINT8 RespectedDataLength,
UINT8* pReceivedDataLength,
UINT8* pReceivedData,
UINT16 TimedOut,);
Parameters Description
hReader Handle to the Reader returned by AC_Open()
RespectedDataLength
Respected data length to be received (maximum 64
bytes)
pReceivedDataLength (K) Data length of the received data
pReceivedData Received data
TimedOut Time Out for waiting the response data (ms)
Return Value INT16 0 = success; Error Code < 0
Table 9 : ACR120_DirectReceive Command Description
Low Level Frame Structure:
Command: From PC to Reader (5 Bytes)
Command Code
(1 byte)
Command Data Length
(1 bytes)
Data
(2 bytes)
E0h 02h RespectedDataLength <= 64 bytes
Response: From Reader to PC (K + 5 Bytes) <<Success or Fail>>
Response Code
(1 byte)
Response Status
(2 bytes)
Response Data Length
(2 bytes)
Response Data
(K bytes)
E1h INT16 PReceivedDataLength (K) pReceivedData
Note:
ACR120_DirectSend() & ACR120_DirectReceive() must be used in a pair.