/* $NetBSD: hamming.h,v 1.1 2011/02/26 18:07:31 ahoka Exp $ */ /* * 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_H #define HAMMING_H #include "nand.h" /*- * These are the possible errors when trying to verify a block of data encoded * using a Hamming code: * * - HAMMING_ERROR_SINGLEBIT * - HAMMING_ERROR_ECC * - HAMMING_ERROR_MULTIPLEBITS */ /* A single bit was incorrect but has been recovered. */ #define HAMMING_ERROR_SINGLEBIT NAND_ECC_CORRECTED /* The original code has been corrupted. */ #define HAMMING_ERROR_ECC NAND_ECC_INVALID /* Multiple bits are incorrect in the data and they cannot be corrected. */ #define HAMMING_ERROR_MULTIPLEBITS NAND_ECC_TWOBIT uint8_t hamming_correct_256(uint8_t *, const uint8_t *, const uint8_t *); void hamming_compute_256(const uint8_t *data, uint8_t *code); #endif /* HAMMING_H */ |