1 /* ----------------------------------------------------------------------------
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2 * SAM Software Package License
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3 * ----------------------------------------------------------------------------
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4 * Copyright (c) 2012, Atmel Corporation
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6 * All rights reserved.
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8 * Redistribution and use in source and binary forms, with or without
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9 * modification, are permitted provided that the following conditions are met:
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11 * - Redistributions of source code must retain the above copyright notice,
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12 * this list of conditions and the disclaimer below.
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14 * Atmel's name may not be used to endorse or promote products derived from
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15 * this software without specific prior written permission.
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17 * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
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18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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20 * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
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21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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23 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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24 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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25 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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26 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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27 * ----------------------------------------------------------------------------
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33 /*------------------------------------------------------------------------------
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35 *------------------------------------------------------------------------------*/
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38 * These are the possible errors when trying to verify a block of data encoded
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39 * using a Hamming code:
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42 * - Hamming_ERROR_SINGLEBIT
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43 * - Hamming_ERROR_ECC
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44 * - Hamming_ERROR_MULTIPLEBITS
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47 /** A single bit was incorrect but has been recovered. */
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48 #define Hamming_ERROR_SINGLEBIT 1
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50 /** The original code has been corrupted. */
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51 #define Hamming_ERROR_ECC 2
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53 /** Multiple bits are incorrect in the data and they cannot be corrected. */
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54 #define Hamming_ERROR_MULTIPLEBITS 3
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56 /*------------------------------------------------------------------------------
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57 * Exported functions
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58 *------------------------------------------------------------------------------*/
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60 extern void Hamming_Compute256x( const uint8_t* pucData, uint32_t dwSize, uint8_t* pucCode ) ;
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62 extern uint8_t Hamming_Verify256x( uint8_t* pucData, uint32_t dwSize, const uint8_t* pucCode ) ;
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64 #endif /* _HAMMING_ */
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