IFDHControl

Synopsis:

#include <PCSC/ifdhandler.h>

RESPONSECODE IFDHControl(DWORD Lun,
    DWORD dwControlCode,
    PUCHAR TxBuffer,
    DWORD TxLength,
    PUCHAR RxBuffer,
    DWORD RxLength,
    PDWORD pdwBytesReturned);

Parameters:

Lun	IN	Logical Unit Number
dwControlCode	IN	Control code for the operation
TxBuffer	IN	Bytes to be sent
TxLength	IN	Length of sent bytes
RxBuffer	OUT	Response
RxLength	IN	Length of response buffer
pdwBytesReturned	OUT	Length of response

Description:

This function performs a data exchange with the reader (not the card) specified by Lun. It is responsible for abstracting functionality such as PIN pads, biometrics, LCD panels, etc. You should follow the MCT and CTBCS specifications for a list of accepted commands to implement. This function is fully voluntary and does not have to be implemented unless you want extended functionality.

• dwControlCode - Control code for the operation

  This value identifies the specific operation to be performed. This value is driver specific.

• TxBuffer - Transmit data
• TxLength - Length of this buffer
• RxBuffer - Receive data
• RxLength - Length of the response buffer

• pdwBytesReturned - Length of response

  This function will be passed the length of the buffer RxBuffer in RxLength and it must set the length of the received data in pdwBytesReturned.

Notes:

*pdwBytesReturned should be set to zero on error.

Returns:

IFD_SUCCESS	Success
IFD_COMMUNICATION_ERROR	An error has occurred
IFD_RESPONSE_TIMEOUT	The response timed out
IFD_NO_SUCH_DEVICE	The reader is no more present