AN3224 datasheet(18/49 Pages) STMICROELECTRONICS

부품명	AN3224

상세설명	Developing an application allowing PR101-USB and MR101-USB FEIG readers to communicate with M24LRXX transponders

PDF	49 Pages

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제조업체	STMICROELECTRONICS [STMicroelectronics]

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PR101-USB and MR101-USB reader detection

AN3224

18/49

Doc ID 17559 Rev 2

4.1.5

FEUSB_OpenDevice

FEUSB_OpenDevice Visual Basic prototype

Table 9 illustrates the FEUSB_OpenDevice Visual Basic function.

FEUSB_OpenDevice C/C++ prototype

Table 10 illustrates the FEUSB_OpenDevice C/C++ function.

Table 9.

FEUSB_OpenDevice

Visual Basic function

Function description

Declaration

Public Declare Function FEUSB_OpenDevice Lib

"FEUSB.DLL" (ByVal dwDeviceID As Long) As Long

Prototype

iHandle = FEUSB_OpenDevice(lngDeviceId(i))

Parameters

dwDeviceID: The reader is detected by calling FEUSB_Scan. The

FEUSB_GetScanListPara allows retrieving the value of the strDeviceHnd

parameter that is converted in Long to obtain dwDeviceID.

Returned value

iHandle: USB reader handle for FEUSB functions

Otherwise FEUSB Error code

Table 10.

FEUSB_OpenDevice

C/C++ function

Function description

Declaration

int

DLL_EXT_FUNC FEUSB_OpenDevice( long nDeviceID );

Prototype

iDeviceHandle = FEUSB_OpenDevice(dwDeviceSerialNumber);

Parameters

dwDeviceID: The reader is detected by calling FEUSB_Scan. The

FEUSB_GetScanListPara allows retrieving the value of the strDeviceHnd

parameter that is converted in Long to obtain dwDeviceID.

Returned value

iHandle: USB reader handle for FEUSB functions

Otherwise FEUSB Error code

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