number formatting - Reading code from RFID card -

-

I have a problem reading the code from the RFID card.

Is there a conversion algorithm? 

  Examples of code: 04006d0ba0 - & gt; 00008596950352 0d001c59b3 - & gt; 00047253268956 0d001c5134 - & gt; 00047253268674 0d001c9317 - & gt; 00047253265550 0d001c93ed - & gt; 00047253265531 0d001c1b12 - & gt; 00047253261700 0d001c1b1d - & gt; 00047253261707 e800ef0aac - & gt; 00485339628883

The same RFID card, different output from different readers ...

I know that the subject is still present, but I think it is a Not the only problem ..

The conversion looks quite simple:

  • Let's assume Take that you want to change from "04006d0ba0" to "000085 9 6950352". "0", then "0", then "6", ...)

  • Hexadecimal number "04006d0ba0" (i.e. "0", then "4", each take a pigeon) / P>

  • Reverse bits of each moth (at least the critical bit becomes the most important bit, the second bit becomes the second last bit), such as "0" (= <0000 ) remains "0" (= 0000 ), "4" (= 0100 ) "2" (= 0010 ), "6" (= 0110 ) remains "6" (= 0110 ), etc.

  • Change in decimal number format.

    • In Java, this may look something like this: 

      Private Static Final byte [] REVERSE_NIBBLE = {0x00, 0x08, 0x04, 0x0C, 0x02, 0x0a, 0x06, 0x0E, 0x01, 0x0 9, 0x05, 0x0D, 0x03, 0x0B, 0x07, 0x0F}; Private Long Convert (Byte [] Input) {Byte [] Output = New Byte [input.length]; For (int i = 0; i & lt; input.length; ++ i) {output [i] = (byte) ((reverse ANBBE [(output [i] >> gt; 4) & amp; 0x0F] & Lt; & lt; 4) | REVERSE_NIBBLE [Output [i] & amp; 0x0F]); } Return the new BigTiger (1, output) LongValue (); }

Comments

Post a Comment

Popular posts from this blog

mysql - How to enter php data into a html multiple select box -

-
I am working on a page that will create a team. I just want to create a selection box which will list all the users of all the users. After that, the user can select more than one friend (i.e. 5) and can send the request to these 5 people to join the team but I am having problems I did this: Select $ sql = "Select i. *, Join * Connect with M * m.id = i.clique_id where adder_id =: id"; $ Stmt = $ db- & gt; Query ($ sql, array ('id' = & gt; $ _SESSION ['id'])); While ($ record = $ stmt-> fetch ()) {$ surname = $ record ['surname']; } and this: & lt; Select multiple = "true" name = "category" well id = "category" name = "category" category = "" & gt; & Lt; Option value = "& lt ;? php echo $ surname ;? & gt;" & Gt; & Lt ;? Php ek $ nickname; ? & Gt; & Lt; / Options & gt; & Lt; / Select & gt; But only a friend's nickname...
Read more

java - Can't add JTree to JPanel of a JInternalFrame -

-
Image
There are two panels in my JInternalframe. I want to add TopPanel to Jtree to nominate another. But I can not add Jaitari to the top of the panel. Please help me in this piece of code: DefaultMutableTreeNode root = new DefaultMutableTreeNode ("deck"); DefaultMutableTreeNode Item Clubs = New DefaultMutableTreeNode ("Club"); AddAllCard (itemClubs); Root.add (itemClubs); DefaultMutableTreeNode item = New DefaultMutableTreeNode ("Diamonds"); AddAllCard (itemDiamonds); Root.add (itemDiamonds); DefaultMutableTreeNode Itemspads = New DefaultMutableTreeNode ("Spades"); AddAllCard (itemSpades); Root.add (itemSpades); DefaultMutableTreeNode item increases = new DefaultMutableTreeNode ("heart"); AddAllCard (itemHearts); Root.add (itemHearts); Default Trimodel Tree Model = New DefaultTreeModel (Route); Tree = new jetty (tree modal); ScrollPane = new JScrollPane (tree); // scrollPane.setViewportView (tree); . ScrollPane.getViewport () add (tr...
Read more

c++ - Cassandra datastax cpp driver - avoiding unnecessary copies -

-
I use the following method to create my insert statement for Cassandra (using datastax cpp driver) : ssStmt1 & lt; & Lt; "Insert some table (...) value (....)" string sStatement1 = ssStmt1.str (); Castestring cass1 = cass_string_init (sStatement1.c_str ()); CassStatement * pStmt1 = cass_statement_new (cass1, 0); I have also tried the following: CassString cass1 = cass_string_init ("Enter some table (id, date, c) value (? ,?,?); "); CassStatement * pStmt1 = cass_statement_new (cass1, 3); Cass_statement_bind_uuid (pStmt1, 0, uuidKey); Cass_statement_bind_int64 (PSTMT1, 1, timestamp); Cass_statement_bind_string (pStmt1, 2, sSomething); The first pattern works with mixed keys, the second is not. The key has a timestamp and a UUID. Timestamp is one of two errors in the field (based on the used bond statement). If bound in this way: cass_statement_bind_int64_by_name (pStmt1, "date", timestamp); I get the following error: Inva...
Read more