hamming.h revision 1.1.2.2
1 1.1.2.2 bouyer /* $NetBSD: hamming.h,v 1.1.2.2 2011/03/05 15:10:22 bouyer Exp $ */ 2 1.1.2.2 bouyer 3 1.1.2.2 bouyer /* 4 1.1.2.2 bouyer * Copyright (c) 2008, Atmel Corporation 5 1.1.2.2 bouyer * 6 1.1.2.2 bouyer * All rights reserved. 7 1.1.2.2 bouyer * 8 1.1.2.2 bouyer * Redistribution and use in source and binary forms, with or without 9 1.1.2.2 bouyer * modification, are permitted provided that the following conditions are met: 10 1.1.2.2 bouyer * 11 1.1.2.2 bouyer * - Redistributions of source code must retain the above copyright notice, 12 1.1.2.2 bouyer * this list of conditions and the disclaimer below. 13 1.1.2.2 bouyer * 14 1.1.2.2 bouyer * Atmel's name may not be used to endorse or promote products derived from 15 1.1.2.2 bouyer * this software without specific prior written permission. 16 1.1.2.2 bouyer * 17 1.1.2.2 bouyer * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR 18 1.1.2.2 bouyer * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 19 1.1.2.2 bouyer * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE 20 1.1.2.2 bouyer * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, 21 1.1.2.2 bouyer * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 1.1.2.2 bouyer * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 23 1.1.2.2 bouyer * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 24 1.1.2.2 bouyer * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 25 1.1.2.2 bouyer * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 26 1.1.2.2 bouyer * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 1.1.2.2 bouyer */ 28 1.1.2.2 bouyer 29 1.1.2.2 bouyer #ifndef HAMMING_H 30 1.1.2.2 bouyer #define HAMMING_H 31 1.1.2.2 bouyer 32 1.1.2.2 bouyer #include "nand.h" 33 1.1.2.2 bouyer 34 1.1.2.2 bouyer /*- 35 1.1.2.2 bouyer * These are the possible errors when trying to verify a block of data encoded 36 1.1.2.2 bouyer * using a Hamming code: 37 1.1.2.2 bouyer * 38 1.1.2.2 bouyer * - HAMMING_ERROR_SINGLEBIT 39 1.1.2.2 bouyer * - HAMMING_ERROR_ECC 40 1.1.2.2 bouyer * - HAMMING_ERROR_MULTIPLEBITS 41 1.1.2.2 bouyer */ 42 1.1.2.2 bouyer 43 1.1.2.2 bouyer /* A single bit was incorrect but has been recovered. */ 44 1.1.2.2 bouyer #define HAMMING_ERROR_SINGLEBIT NAND_ECC_CORRECTED 45 1.1.2.2 bouyer 46 1.1.2.2 bouyer /* The original code has been corrupted. */ 47 1.1.2.2 bouyer #define HAMMING_ERROR_ECC NAND_ECC_INVALID 48 1.1.2.2 bouyer 49 1.1.2.2 bouyer /* Multiple bits are incorrect in the data and they cannot be corrected. */ 50 1.1.2.2 bouyer #define HAMMING_ERROR_MULTIPLEBITS NAND_ECC_TWOBIT 51 1.1.2.2 bouyer 52 1.1.2.2 bouyer uint8_t hamming_correct_256(uint8_t *, const uint8_t *, const uint8_t *); 53 1.1.2.2 bouyer void hamming_compute_256(const uint8_t *data, uint8_t *code); 54 1.1.2.2 bouyer 55 1.1.2.2 bouyer #endif /* HAMMING_H */ 56 1.1.2.2 bouyer 57
Indexes created Thu Oct 23 18:09:57 GMT 2025