YW_ReadaBlock
读取一块数据，M1卡读块

参数列表：

int stdcall YW_ReadaBlock 

(

int ReaderID,

int BlockAddr,

int LenData, 

unsigned char *Data);


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

BlockAddr

int

IN

绝对地址块号

LenData

int

IN

要读出的数据的字节数，Mifare S50/S70为16字节

一般固定为：0x10(16字节)

Data

unsigned char *

OUT

输出读到的块的数据

返 回 值：大于0为命令发送成功，小于0为命令发送失败


C++声明（VC++和C++ Builder）：

int stdcall YW_ReadaBlock (int ReaderID,int BlockAddr,int LenData, unsigned char *Data);


Delphi声明：

function  YW_ReadaBlock(ReaderID: Integer;BlockAddr: Integer;LenData: Integer; Data: PChar): Integer;stdcall;external YOWOREADERDLL;


VB声明：

Public Declare Function YW_ReadaBlock Lib "YW60x.dll" (ByVal ReaderID As Long, ByVal BlockAddr As Long, ByVal LenData As Long, ByRef Data As Byte) As Long


JAVA声明：

public int YW_ReadaBlock(int ReaderID,int BlockAddr, int LenData,Pointer pData)

{

int ret;

try

{

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

fuc.setRetVal(Type.INT);

fuc.setParameter(0, ReaderID);

fuc.setParameter(1,BlockAddr);

fuc.setParameter(2,LenData);

fuc.setParameter(3,pData);

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_ReadaBlock(int ReaderID,int BlockAddr, int LenData, byte [] pData);


Power Builder 9 声明：

public FUNCTION long YW_ReadaBlock (long lReaderID , long BlockAddr , long LenData , ref char Data[]) library "YW60x.dll"


支持的RFID读写器：
SDT-HA, YW-605RA, YW-605RB, YW-605RC, YW-605SA, YW-605SB, YW-605SC, YW-605UA, YW-605UB, YW-605UC, YW-605HA, YW-605HB, YW-605HC, YW-620HA, YW-620HB, YW-620HC, YW-608RA, YW-608RB, YW-608RC, YW-608SA, YW-608SB, YW-608SC, YW-608UA, YW-608UB, YW-608UC, YW-608HA, YW-608HB, YW-608HC, YW-610SA, YW-610SB, YW-610SC, YW-607