AN3224 datasheet(17/49 Pages) STMICROELECTRONICS

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AN3224

PR101-USB and MR101-USB reader detection

Doc ID 17559 Rev 2

17/49

4.1.4

FEUSB_GetScanListPara

FEUSB_GetScanListPara Visual Basic prototype

Table 7 illustrates the FEUSB_GetScanListPara Visual Basic function.

FEUSB_GetScanListPara C/C++ prototype

Table 8 illustrates the FEUSB_GetScanListPara C/C++ function.

Table 7.

FEUSB_GetScanListPara

Visual Basic function

Function description

Declaration

Public Declare Function FEUSB_GetScanListPara Lib

"FEUSB.DLL" (ByVal iIndex As Long, ByVal cPara As

String, ByVal cValue As String) As Long

Prototype

error = FEUSB_GetScanListPara(iIndex, cPara, cValue)

Parameters

iIndex: Device index number when several USB readers are connected to

the computer USB port.

cPara: Character string containing

Device-ID: USB device serial number

DeviceHnd: USB channel device handle

FamilyName: Name of the device family corresponding to the device

connected to the USB channel

DeviceName: Name of the device connected to the USB channel

Present: USB device if connected (cValue=1) or disconnected (cValue

=0)

cValue: Value returned by the reader depending on cPara.

Returned value

0: no error

Otherwise FEUSB error code

Table 8.

FEUSB_GetScanListPara

C/C++ function

Function description

Declaration

int

DLL_EXT_FUNC FEUSB_GetScanListPara( int iIndex,

char* cParaID, char* cValue );

Prototype

error = FEUSB_GetScanListPara(iIndex, cPara, cValue);

Parameters

iIndex: Device index number when several USB readers are connected to

the computer USB port.

cPara: character string containing

Device-ID: USB device serial number

DeviceHnd: USB channel device handle

FamilyName: Name of the device family corresponding to the device

connected to the USB channel

DeviceName: Name of the device connected to the USB channel

Present: USB device if connected (cValue=1) or disconnected (cValue

=0)

cValue: Value returned by the reader depending on cPara.

Returned value

0: no error

Otherwise FEUSB error code

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