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RFID_PuYue/PuYueRFID_C2S.cs

@@ -344,7 +344,104 @@ public class PuYueRFID_C2S
         }
     }
 
+    public bool ReadByte(short address, short length, out byte[] data, out string errmsg)
+    {
+        errmsg = "";
+        if (length > 0x40)
+        {
+            throw new Exception("最大读取64个字节");
+        }
+        data = null;
+
+        byte[] temp;
+        byte[] buffer = new byte[12];
+        seqadd();
+        var seqbyte = BitConverter.GetBytes(seq);  //事务处理标识
+        buffer[0] = seqbyte[0];  //高位
+        buffer[1] = seqbyte[1];  //低位
+
+        buffer[2] = 0;
+        buffer[3] = 0;  //协议标识
+
+        buffer[4] = 0;
+        buffer[5] = 0x06;  //后面字节数
+
+        buffer[6] = 0xFF;  //主设备
+        buffer[7] = 0x03;  //功能码
+
+        temp = BitConverter.GetBytes(address);  //寄存器起始地址
+        buffer[8] = temp[1];  //高位
+        buffer[9] = temp[0];  //低位
+
+        temp = BitConverter.GetBytes(length);  //寄存器个数
+        buffer[10] = temp[1];  //高位
+        buffer[11] = temp[0];  //低位
+
 
+        var buffer5 = new byte[256];
+        int recvlen = 0;
+
+        lock (tcpClient)
+        {
+            try
+            {
+                if (this.tcpClient.Client.Available > 0)
+                {
+                    this.tcpClient.Client.Receive(buffer5);
+                }
+                this.tcpClient.Client.Send(buffer);
+                Thread.Sleep(10);
+                recvlen = this.tcpClient.Client.Receive(buffer5);
+            }
+            catch (SocketException exception1)
+            {
+                errmsg = exception1.ToString();
+                return false;
+            }
+            catch (Exception ex)
+            {
+                errmsg = ex.ToString();
+                return false;
+            }
+        }
+
+        if (buffer5.Length <= 6)
+        {
+            errmsg = "返回内容长度太短:" + BitConverter.ToString(buffer5);
+            return false;
+        }
+        if (buffer5[0] != seqbyte[0] || buffer5[1] != seqbyte[1])
+        {
+            errmsg = "seq不符:" + BitConverter.ToString(buffer5) + ",seq:" + BitConverter.ToString(seqbyte);
+            return false;
+        }
+        else if (buffer5[7] == 0x83)
+        {
+            errmsg = "设备报错:" + BitConverter.ToString(buffer5);
+            return false;
+        }
+        else
+        {
+            byte[] buffer6 = new byte[2];
+            buffer6[0] = buffer5[5];
+            buffer6[1] = buffer5[4];
+            var num3 = BitConverter.ToInt16(buffer6, 0);
+            if (((num3 + 6) >= recvlen))
+            {
+                data = new byte[num3 - 3];
+                Buffer.BlockCopy(buffer5, 9, data, 0, length);
+                //data = buffer6.GetRange(9, num3 - 3).ToArray();
+                //Console.WriteLine(BitConverter.ToString(list.ToArray()));
+                return true;
+            }
+            else
+            {
+                errmsg = "返回数据长度不符:" + BitConverter.ToString(buffer5) + ",rn:" + num3;
+
+            }
+        }
+        return false;
+    }
     public bool ReadByte(short address,short length,out byte[] data) {
 
         if (length > 64)