YW_TOPAZ_ReadByte
TOPAZ卡片读单个字节

参数列表：

int stdcall YW_TOPAZ_ReadByte

(

int ReaderID,

unsigned char *UID, 

unsigned char BlockID, 

unsigned char ByteAddr, 

unsigned char *pDataRet

)


参数含义：

参数

类型

方向

含义

ReaderID

int

IN

所要获取的设备标示ID，范围0x0000-0xFFFF，如果未知，则ReaderID=0

UID

unsigned char*

IN

TOPAZ卡的UID，目前4字节

BlockID

unsigned char

IN

要读取的块号

ByteAddr

unsigned char

IN

要读取字节所在的地址

pDataRet

unsigned char *

OUT

读到的数据，一个字节

返 回 值：大于0为命令发送成功，<=0为命令发送失败


C++声明（VC++和C++ Builder）：

int stdcall YW_TOPAZ_ReadByte(int ReaderID,unsigned char *UID, unsigned char BlockID, unsigned char ByteAddr, unsigned char *pDataRet)


Delphi声明：

function YW_TOPAZ_ReadByte(ReaderID: Integer;UID: PChar;BlockID: Byte;ByteAddr: Byte;var DataRet: Byte): Integer;stdcall;external YOWOREADERDLL;


VB声明：

Public Declare Function YW_TOPAZ_ReadByte Lib "YW60x.dll" (ByVal ReaderID As Long, ByRef UID As Byte, ByVal BlockID As Byte, ByVal ByteAddr As Byte, ByRef


JAVA声明：

public int YW_TOPAZ_ReadByte(int ReaderID,Pointer UID, byte BlockID, byte ByteAddr, Pointer pDataRet)

{

int ret;

try

{

JNative fuc = new JNative("YW60x.dll", "YW_TOPAZ_ReadByte");

fuc.setRetVal(Type.INT);

fuc.setParameter(0, ReaderID);

fuc.setParameter(1, UID);

fuc.setParameter(2, BlockID);

fuc.setParameter(3, ByteAddr);

fuc.setParameter(4, pDataRet);

fuc.invoke();

ret = fuc.getRetValAsInt();

}

catch(NativeException e)

{

ret = -1;

}

catch(IllegalAccessException e)

{

ret = -2;

}

return ret;

}


C#声明：

[DllImport("YW60x.dll")]

public static extern int YW_TOPAZ_ReadByte(int ReaderID,byte[] UID, byte BlockID, byte ByteAddr, byte[] pDataRet);


Power Builder 9 声明：

public FUNCTION long YW_TOPAZ_ReadByte (long lReaderID , ref char UID[], char BlockID, char ByteAddr, ref char DataRet) library "YW60x.dll"


支持的RFID读写器：
YW-607