求助C#调用32位动态库函数 制作明华读写器读写操作

[lgmzyy]

 //寻卡
        [DllImport("mwhrf_bj.dll", EntryPoint = "rf_card")]
        public static extern Int16 rf_card(int icdev, char _Mode, Int16* _Snr);

        //将密码装入读写模块RAM中 
        [DllImport("mwhrf_bj.dll", EntryPoint = "rf_load_key")]
        public static extern int rf_load_key(int icdev, char _Mode, char _SecNr, Byte* _NKey);

        //将密码装入读写模块RAM中 
        [DllImport("mwhrf_bj.dll", EntryPoint = "rf_load_key_hex", SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
        public static extern int rf_load_key_hex(int icdev, char _Mode, char _SecNr, Byte* _NKey);

上面是我写的调用dll函数。

    byte[] tk = new byte[6] { 255, 255, 255, 255, 255, 255 };
                fixed (byte* array = tk) 

              
                    if ((IC.rf_load_key_hex(icdev, '0', '1', array)) != 0)
                    {
                        MessageBox.Show("Load key error!！");
                        IC.Close_USB(icdev); //关闭设备
                        return;
                    }

这段是装载密码的函数 但是返回值一直是错误的，怎么都不返回0，请问各位大大 ，到底这个该怎么写啊

[lgmzyy]

  byte[] tk = new byte[6] { 255, 255, 255, 255, 255, 255 };
                fixed (byte* array = tk)
                    if ((IC.rf_load_key(icdev, '0', '1', array)) != 0)
                    {
                        MessageBox.Show("Load key error!！");
                    }

用rf_load_key 这个函数也一直是错误的，不返回0

[lgmzyy]

int rf_load_key(int icdev,unsigned char _Mode,unsigned char _SecNr,unsigned char *_NKey);

功 能：将密码装入读写模块RAM中

参 数：icdev：通讯设备标识符

_Mode：装入密码模式，同密码验证模式mode_auth

_SecNr：扇区号（M1卡：0～15； ML卡：0）

_Nkey：写入读写器中的卡密码

返 回：成功则返回 0

例：//key A and key B

unsigned char tk[6]={0xa0,0xa1,0xa2,0xa3,0xa4,0xa5};

/* 装入1扇区的0套A密码 */

if((rf_load_key(icdev,0,1,tk))!=0)

{

printf("Load key error!");

rf_exit(icdev)

exit(1);

}




这个是对rf_load_key的实例代码

[zyylgm]

感谢各位大哥，我终于写好了！下面贡献我的代码有需要的朋友 请查阅，代码不严谨，有错误请指出，谢谢

 //连接设备
        [DllImport("mwhrf_bj.dll", EntryPoint = "Open_USB")]
        public static extern int Open_USB();
        //断开设备
        [DllImport("mwhrf_bj.dll", EntryPoint = "Close_USB", SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
        public static extern int Close_USB(int icdev);
        //获取设备版本号
        [DllImport("mwhrf_bj.dll", EntryPoint = "rf_get_status")]
        public static extern int rf_get_status(int icdev, Byte[] version);       
        //蜂鸣器
        [DllImport("mwhrf_bj.dll", EntryPoint = "rf_beep", SetLastError = true, CharSet = CharSet.Auto, ExactSpelling = true, CallingConvention = CallingConvention.Winapi)]
        public static extern int rf_beep(int icdev, int version);

        //中止对该卡操作
        [DllImport("mwhrf_bj.dll", EntryPoint = "rf_halt")]
        public static extern int rf_halt(Int16 icdev);

        //寻卡请求
        [DllImport("mwhrf_bj.dll", EntryPoint = "rf_request" , SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
        public static extern Int16 rf_request(int icdev,string IDLE, Int16* state);


        //寻卡
        [DllImport("mwhrf_bj.dll", EntryPoint = "rf_card")]
        public static extern Int16 rf_card(int icdev, int mode,ref int Snr);      

        //卡防冲突，返回卡的序列号
        [DllImport("mwhrf_bj.dll", EntryPoint = "rf_anticoll", SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
        public static extern int rf_anticoll(int icdev, char _Bcnt, Int64* _Snr);

        ////将密码装入读写模块RAM中      

        [DllImport("mwhrf_bj.dll")]
        public static extern short rf_load_key(int icdev, int mode, int secnr, [In] byte[] nkey);  //密码装载到读写模块中      

        [DllImport("mwhrf_bj.dll", EntryPoint = "rf_load_key_hex")]
        public static extern Int16 rf_load_key_hex(int icdev, int mode, int secnr, string keybuff);


        //验证某一扇区密码     
        [DllImport("mwhrf_bj.dll")]
        public static extern short rf_authentication(int icdev, int _Mode, int _SecNr);

        //验证某一扇区密码 2
        [DllImport("mwhrf_bj.dll", EntryPoint = "rf_authentication_2")]
        public static extern int rf_authentication_2(int icdev, int _Mode, int KeyNr, int Adr);
      

        //向卡中写入数据
        [DllImport("mwhrf_bj.dll", EntryPoint = "rf_write")]
        public static extern int rf_write(int icdev, int _Adr, char[] _Data);

        [DllImport("mwhrf_bj.dll")]
        public static extern short rf_write(int icdev, int adr, [In] string sdata);  //向卡中写入数据

        //读取数据     
        [DllImport("mwhrf_bj.dll")]
        public static extern short rf_read(int icdev, int adr, [MarshalAs(UnmanagedType.LPStr)] StringBuilder sdata);  //从卡中读数据

[lizhibin11]

[DllImport("mwrf32.dll", EntryPoint = "rf_load_key_hex", SetLastError = true,
             CharSet = CharSet.Auto, ExactSpelling = false,
             CallingConvention = CallingConvention.StdCall)]
public static extern Int16 rf_load_key_hex(int icdev, int mode, int secnr, [MarshalAs(UnmanagedType.LPArray)]byte[] keybuff);

[zyylgm]

 byte[] tk = new byte[6] { 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5 };               
               int ints=IC.rf_load_key_hex(icdev, 0, 1, tk);
                if (ints != 0)
                {
                    MessageBox.Show("Load key error!！");
                }

大哥 返回值不对啊 不为0

[lizhibin11]

改成这样

[DllImport("mwrf32.dll", EntryPoint = "rf_load_key_hex")]
public static extern Int16 rf_load_key_hex(int icdev, int mode, int secnr, string keybuff);
int ints=IC.rf_load_key_hex(icdev, 0, 1, "a0a1a2a3a4a5");

[zyylgm]

感谢大哥 返回正确

[zyylgm]

 //读取数据
        [DllImport("mwhrf_bj.dll", EntryPoint = "rf_read")]
        public static extern int rf_read(int icdev, int _Adr, ref Byte[] _Data);

读取数据 这样对吗？
顺便大哥可以把mwrf32.dll 发我邮箱一下吗？[e-mail]

[lizhibin11]

发了,包括说明文档在内

[zyylgm]

  //读取数据
        [DllImport("mwhrf_bj.dll", EntryPoint = "rf_read")]
        public static extern Int16 rf_read(int icdev, int Adr, ref Byte[] Data);

 Byte[] str = new Byte[16];
                string strrr = "";
                int read = -1;
                    read = IC.rf_read(icdev, 2,ref str);
                   strrr = Encoding.Default.GetString(str);
                if (read == 0)
                    MessageBox.Show("ＩＣ卡中数据读取成功！" + strrr.ToString());
                else
                    MessageBox.Show("ＩＣ卡中数据读取失败！" + strrr.ToString());

大哥我这样读数据 写的对吗？

[lizhibin11]

ref应该是没必要的，编码应该是asc的。你自己试一下。

[lizhibin11]

Byte[] 本身传的是一个地址，string,int等类型的参数需要被写入时才加ref out

[zyylgm]

我太菜了 现在

  int checkIC_pwd = IC.rf_authentication(icdev, 0, 1);
                if (checkIC_pwd != 0)
                {
                    MessageBox.Show("ＩＣ卡密码错误！");
                    IC.Close_USB(icdev); //关闭设备
                    return;
                }

这个一直返回个4

 [DllImport("mwhrf_bj.dll", EntryPoint = "rf_authentication")]
        public static extern int rf_authentication(int icdev, int mode, int SecNr);

怎么解决呢 ？

[zyylgm]

a0a1a2a3a4a5 是代表ffffffffffff 吗？

[lizhibin11]

那么多函数，不能每个都问，你自己看看文档不停的测试吧，这也是编程的乐趣所在啊。

[kernelkey]

<a href="http://www.17u.cn/FlightQuery.aspx?TCAllianceID=4788239&RefId=4788239&">不错啊</a>

[zyylgm]

恩 谢谢大哥 我自己努力研究研究