Rohan Gurav / Mbed OS Sean_AdiSense1000_V21

ADISense1000 Version 2.1 code base

Fork of AdiSense1000_V21 by Sean Wilson

src/crc16.c@29:57edca10d78c, 2018-05-22 (annotated)

Committer:
kevin1990
Date:
Tue May 22 13:45:24 2018 +0100
Branch:
v2.0
Revision:
29:57edca10d78c
Parent:
27:567abf893938 
Adding host library and example code for v1.3 release to v2.0 branch

Who changed what in which revision?

UserRevisionLine numberNew contents of line
danodonovan 26:12d0204be712 1 /*
danodonovan 26:12d0204be712 2 * Copyright 2001-2010 Georges Menie (www.menie.org)
danodonovan 26:12d0204be712 3 * All rights reserved.
danodonovan 26:12d0204be712 4 * Redistribution and use in source and binary forms, with or without
danodonovan 26:12d0204be712 5 * modification, are permitted provided that the following conditions are met:
danodonovan 26:12d0204be712 6 *
danodonovan 26:12d0204be712 7 * * Redistributions of source code must retain the above copyright
danodonovan 26:12d0204be712 8 * notice, this list of conditions and the following disclaimer.
danodonovan 26:12d0204be712 9 * * Redistributions in binary form must reproduce the above copyright
danodonovan 26:12d0204be712 10 * notice, this list of conditions and the following disclaimer in the
danodonovan 26:12d0204be712 11 * documentation and/or other materials provided with the distribution.
danodonovan 26:12d0204be712 12 * * Neither the name of the University of California, Berkeley nor the
danodonovan 26:12d0204be712 13 * names of its contributors may be used to endorse or promote products
danodonovan 26:12d0204be712 14 * derived from this software without specific prior written permission.
danodonovan 26:12d0204be712 15 *
danodonovan 26:12d0204be712 16 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
danodonovan 26:12d0204be712 17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
danodonovan 26:12d0204be712 18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
danodonovan 26:12d0204be712 19 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
danodonovan 26:12d0204be712 20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
danodonovan 26:12d0204be712 21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
danodonovan 26:12d0204be712 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
danodonovan 26:12d0204be712 23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
danodonovan 26:12d0204be712 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
danodonovan 26:12d0204be712 25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
danodonovan 26:12d0204be712 26 */
danodonovan 26:12d0204be712 27
danodonovan 26:12d0204be712 28 #include "crc16.h"
danodonovan 26:12d0204be712 29
danodonovan 26:12d0204be712 30 /* CRC16 implementation acording to CCITT standards */
danodonovan 26:12d0204be712 31
danodonovan 26:12d0204be712 32 static const unsigned short crc16tab[256]= {
danodonovan 26:12d0204be712 33 0x0000,0x1021,0x2042,0x3063,0x4084,0x50a5,0x60c6,0x70e7,
danodonovan 26:12d0204be712 34 0x8108,0x9129,0xa14a,0xb16b,0xc18c,0xd1ad,0xe1ce,0xf1ef,
danodonovan 26:12d0204be712 35 0x1231,0x0210,0x3273,0x2252,0x52b5,0x4294,0x72f7,0x62d6,
danodonovan 26:12d0204be712 36 0x9339,0x8318,0xb37b,0xa35a,0xd3bd,0xc39c,0xf3ff,0xe3de,
danodonovan 26:12d0204be712 37 0x2462,0x3443,0x0420,0x1401,0x64e6,0x74c7,0x44a4,0x5485,
danodonovan 26:12d0204be712 38 0xa56a,0xb54b,0x8528,0x9509,0xe5ee,0xf5cf,0xc5ac,0xd58d,
danodonovan 26:12d0204be712 39 0x3653,0x2672,0x1611,0x0630,0x76d7,0x66f6,0x5695,0x46b4,
danodonovan 26:12d0204be712 40 0xb75b,0xa77a,0x9719,0x8738,0xf7df,0xe7fe,0xd79d,0xc7bc,
danodonovan 26:12d0204be712 41 0x48c4,0x58e5,0x6886,0x78a7,0x0840,0x1861,0x2802,0x3823,
danodonovan 26:12d0204be712 42 0xc9cc,0xd9ed,0xe98e,0xf9af,0x8948,0x9969,0xa90a,0xb92b,
danodonovan 26:12d0204be712 43 0x5af5,0x4ad4,0x7ab7,0x6a96,0x1a71,0x0a50,0x3a33,0x2a12,
danodonovan 26:12d0204be712 44 0xdbfd,0xcbdc,0xfbbf,0xeb9e,0x9b79,0x8b58,0xbb3b,0xab1a,
danodonovan 26:12d0204be712 45 0x6ca6,0x7c87,0x4ce4,0x5cc5,0x2c22,0x3c03,0x0c60,0x1c41,
danodonovan 26:12d0204be712 46 0xedae,0xfd8f,0xcdec,0xddcd,0xad2a,0xbd0b,0x8d68,0x9d49,
danodonovan 26:12d0204be712 47 0x7e97,0x6eb6,0x5ed5,0x4ef4,0x3e13,0x2e32,0x1e51,0x0e70,
danodonovan 26:12d0204be712 48 0xff9f,0xefbe,0xdfdd,0xcffc,0xbf1b,0xaf3a,0x9f59,0x8f78,
danodonovan 26:12d0204be712 49 0x9188,0x81a9,0xb1ca,0xa1eb,0xd10c,0xc12d,0xf14e,0xe16f,
danodonovan 26:12d0204be712 50 0x1080,0x00a1,0x30c2,0x20e3,0x5004,0x4025,0x7046,0x6067,
danodonovan 26:12d0204be712 51 0x83b9,0x9398,0xa3fb,0xb3da,0xc33d,0xd31c,0xe37f,0xf35e,
danodonovan 26:12d0204be712 52 0x02b1,0x1290,0x22f3,0x32d2,0x4235,0x5214,0x6277,0x7256,
danodonovan 26:12d0204be712 53 0xb5ea,0xa5cb,0x95a8,0x8589,0xf56e,0xe54f,0xd52c,0xc50d,
danodonovan 26:12d0204be712 54 0x34e2,0x24c3,0x14a0,0x0481,0x7466,0x6447,0x5424,0x4405,
danodonovan 26:12d0204be712 55 0xa7db,0xb7fa,0x8799,0x97b8,0xe75f,0xf77e,0xc71d,0xd73c,
danodonovan 26:12d0204be712 56 0x26d3,0x36f2,0x0691,0x16b0,0x6657,0x7676,0x4615,0x5634,
danodonovan 26:12d0204be712 57 0xd94c,0xc96d,0xf90e,0xe92f,0x99c8,0x89e9,0xb98a,0xa9ab,
danodonovan 26:12d0204be712 58 0x5844,0x4865,0x7806,0x6827,0x18c0,0x08e1,0x3882,0x28a3,
danodonovan 26:12d0204be712 59 0xcb7d,0xdb5c,0xeb3f,0xfb1e,0x8bf9,0x9bd8,0xabbb,0xbb9a,
danodonovan 26:12d0204be712 60 0x4a75,0x5a54,0x6a37,0x7a16,0x0af1,0x1ad0,0x2ab3,0x3a92,
danodonovan 26:12d0204be712 61 0xfd2e,0xed0f,0xdd6c,0xcd4d,0xbdaa,0xad8b,0x9de8,0x8dc9,
danodonovan 26:12d0204be712 62 0x7c26,0x6c07,0x5c64,0x4c45,0x3ca2,0x2c83,0x1ce0,0x0cc1,
danodonovan 26:12d0204be712 63 0xef1f,0xff3e,0xcf5d,0xdf7c,0xaf9b,0xbfba,0x8fd9,0x9ff8,
danodonovan 26:12d0204be712 64 0x6e17,0x7e36,0x4e55,0x5e74,0x2e93,0x3eb2,0x0ed1,0x1ef0
danodonovan 26:12d0204be712 65 };
danodonovan 26:12d0204be712 66
kevin1990 29:57edca10d78c 67 unsigned short adi_sense_crc16_ccitt(const void *buf, int len)
danodonovan 26:12d0204be712 68 {
danodonovan 26:12d0204be712 69 register int counter;
danodonovan 26:12d0204be712 70 register unsigned short crc = 0;
danodonovan 26:12d0204be712 71 char *pBuf = (char *)buf;
danodonovan 26:12d0204be712 72 for( counter = 0; counter < len; counter++)
danodonovan 26:12d0204be712 73 crc = (crc<<8) ^ crc16tab[((crc>>8) ^ *(char *)pBuf++)&0x00FF];
danodonovan 26:12d0204be712 74 return crc;
danodonovan 26:12d0204be712 75 }