| /*************************************************************************** |
| * __________ __ ___. |
| * Open \______ \ ____ ____ | | _\_ |__ _______ ___ |
| * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / |
| * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < |
| * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ |
| * \/ \/ \/ \/ \/ |
| * $Id$ |
| * |
| * Copyright (C) 2007 by Michael Sevakis |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version 2 |
| * of the License, or (at your option) any later version. |
| * |
| * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY |
| * KIND, either express or implied. |
| * |
| ****************************************************************************/ |
| |
| #ifndef _DS2411_H_ |
| #define _DS2411_H_ |
| |
| #include <stdbool.h> |
| |
| /* |
| * Byte 0: 8-bit family code (always 01h) |
| * Bytes 1-6: 48-bit serial number |
| * Byte 7: 8-bit CRC code |
| */ |
| struct ds2411_id |
| { |
| unsigned char family_code; |
| unsigned char uid[6]; |
| unsigned char crc; |
| } __attribute__((packed)); |
| |
| extern int ds2411_read_id(struct ds2411_id *id); |
| |
| /* return values */ |
| enum ds2411_id_return_codes |
| { |
| DS2411_NO_PRESENCE = -3, |
| DS2411_INVALID_FAMILY_CODE, |
| DS2411_INVALID_CRC, |
| DS2411_OK = 0, |
| }; |
| |
| #endif /* _DS2411_H_ */ |