| /* ---------------------------------------------------------------------------- |
| * ATMEL Microcontroller Software Support |
| * ---------------------------------------------------------------------------- |
| * Copyright (c) 2008, Atmel Corporation |
| * |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * - Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the disclaimer below. |
| * |
| * Atmel's name may not be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE |
| * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, |
| * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, |
| * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * ---------------------------------------------------------------------------- |
| */ |
| |
| #ifndef _HAMMING_ |
| #define _HAMMING_ |
| |
| /*------------------------------------------------------------------------------ |
| * Defines |
| *------------------------------------------------------------------------------*/ |
| |
| /** |
| * These are the possible errors when trying to verify a block of data encoded |
| * using a Hamming code: |
| * |
| * \section Errors |
| * - Hamming_ERROR_SINGLEBIT |
| * - Hamming_ERROR_ECC |
| * - Hamming_ERROR_MULTIPLEBITS |
| */ |
| |
| /** A single bit was incorrect but has been recovered. */ |
| #define Hamming_ERROR_SINGLEBIT 1 |
| |
| /** The original code has been corrupted. */ |
| #define Hamming_ERROR_ECC 2 |
| |
| /** Multiple bits are incorrect in the data and they cannot be corrected. */ |
| #define Hamming_ERROR_MULTIPLEBITS 3 |
| |
| /*------------------------------------------------------------------------------ |
| * Exported functions |
| *------------------------------------------------------------------------------*/ |
| |
| extern void Hamming_Compute256x( const uint8_t* pucData, uint32_t dwSize, uint8_t* pucCode ) ; |
| |
| extern uint8_t Hamming_Verify256x( uint8_t* pucData, uint32_t dwSize, const uint8_t* pucCode ) ; |
| |
| #endif /* _HAMMING_ */ |