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      1. <sub id="zeco9"><table id="zeco9"><small id="zeco9"></small></table></sub>

        IC卡读卡器与编程语言

        北京友我科技RFID读写器 转载请注明出处,本篇地址:http://www.bebaspikiran.com/ywdn/NoteDetails.asp?id=19

          由于需求的千差万别,IC卡读卡器在实际使用中一般都需要经过二次开发,而软件工程师一般都精通一种或几种编程语言,有时候恰恰要使用不熟悉的编程语言。有时候也有一些工程师问这个IC卡读卡器支不支持这种编程语言,其实答案是肯定的。

          IC卡读卡器SDK中一般都带有DLL文件,实际上这个DLL文件的调用与编程语言是没有关系的,而与编程语言有关系的就是API函数的声明,只要我们了解相关编程语言的语法规则,基本可以用任何编程语言来开发了。

          下面举个例子来说明:

          M1卡的防碰撞并选卡函数YW_AntiCollideAndSelect


        函数的C语言声明如下:int stdcall  YW_AntiCollideAndSelect(int ReaderID, unsigned char MultiCardMode, unsigned char *CardMem, unsigned char *SNLen, unsigned char *SN);


        delphi声明:function YW_AntiCollideAndSelect(ReaderID: Integer;MultiCardMode:Byte;var CardMem: Byte;var SNOLen:Byte;SNO: PChar): Integer;stdcall;external 'YW60x.dll';


        VB声明:Public Declare Function YW_AntiCollideAndSelect Lib "YW60x.dll" (ByVal ReaderID As Long, ByVal MultiCardMode As Byte, ByRef CardMem As Byte, ByRef SNOLen As Byte)


        C#声明:[DllImport("YW60x.dll")]


        public static extern int YW_AntiCollideAndSelect(int ReaderID,byte MultiCardMode, ref byte CardMem, ref byte SNLen, byte [] SN);


        Power Builder 9 声明:public FUNCTION long YW_AntiCollideAndSelect (long lReaderID , char MultiCardMode, ref char CardMem, ref char SNOLen, ref char SNO[]) library "YW60x.dll"


        JAVA声明:

        public int YW_AntiCollideAndSelect(int ReaderID,byte MultiCardMode, Pointer CardMem, Pointer SNLen, Pointer SN)


        {


        int ret;


        try


        {


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


        fuc.setRetVal(Type.INT);


        fuc.setParameter(0, ReaderID);


        fuc.setParameter(1, MultiCardMode);


        fuc.setParameter(2,CardMem);


        fuc.setParameter(3,SNLen);


        fuc.setParameter(4,SN);


        fuc.invoke();


        ret = fuc.getRetValAsInt();


        }


        catch(NativeException e)


        {


        ret = -1;


        }


        catch(IllegalAccessException e)


        {


        ret = -2;


        }


        return ret;


        }


        只要明白各种编程语言中数据类型的转换,就可以自己将这些读卡器SDK中的API函数转换成自己熟悉的声明函数。


        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-608HB, YW-608HC, YW-610SA, YW-610SB, YW-610SC, YW-602-R, YW-602-3, YW-602-8

        18禁亚洲深夜福利入口GIF