ID12 RFID library for reading 125KHz RFID tags
Dependents: ID12RFID_HelloWorld MyFinalDerbot RFID_CatDoor TweetRFID ... more
Diff: ID12RFID.cpp
- Revision:
- 1:f04afa911cf5
- Parent:
- 0:049d572aefe1
diff -r 049d572aefe1 -r f04afa911cf5 ID12RFID.cpp --- a/ID12RFID.cpp Thu Jun 03 13:24:04 2010 +0000 +++ b/ID12RFID.cpp Tue Nov 23 17:17:15 2010 +0000 @@ -1,53 +1,53 @@ -/* mbed ID12 RFID Library - * Copyright (c) 2007-2010, sford - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ - -#include "ID12RFID.h" - -#include "mbed.h" - -ID12RFID::ID12RFID(PinName rx) - : _rfid(NC, rx) { -} - -int ID12RFID::readable() { - return _rfid.readable(); -} - -int ID12RFID::read() { - while (_rfid.getc() != 2); - - int v = 0; - _rfid.getc(); // drop 1st 2 - _rfid.getc(); - - for (int i=7; i>=0; i--) { - char c = _rfid.getc(); // a ascii hex char - int part = c - '0'; - v |= part << (i * 4); - } - - for (int i=0; i<5; i++) { - _rfid.getc(); - } - - return v; -} +/* mbed ID12 RFID Library + * Copyright (c) 2007-2010, sford, http://mbed.org + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "ID12RFID.h" + +#include "mbed.h" + +ID12RFID::ID12RFID(PinName rx) + : _rfid(NC, rx) { +} + +int ID12RFID::readable() { + return _rfid.readable(); +} + +int ID12RFID::read() { + while (_rfid.getc() != 2); + + int v = 0; + _rfid.getc(); // drop 1st 2 bytes - we actually only read the lower 32-bits of the code + _rfid.getc(); + + for (int i=7; i>=0; i--) { + char c = _rfid.getc(); // a ascii hex char + int part = c - '0'; + v |= part << (i * 4); + } + + for (int i=0; i<5; i++) { + _rfid.getc(); + } + + return v; +}