ecos: packages/services/crc/current/src/crc16.c annotate

annotate packages/services/crc/current/src/crc16.c @ 3292:7f8e529b4d82 default tip

Fix FREESCALE_EDMA_NBYTES_MLOFFYES_MLOFF() so it works with negative offsets.

author	vae
date	Wed, 29 Apr 2015 23:31:48 +0000
parents	3fa8710867ea
children

rev	line source
277 544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	1 //==========================================================================
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	2 //
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	3 // crc16.c
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	4 //
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	5 // 16 bit CRC with polynomial x^16+x^12+x^5+1
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	6 //
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	7 //==========================================================================
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 395 diff changeset	8 // ####ECOSGPLCOPYRIGHTBEGIN####
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 395 diff changeset	9 // -------------------------------------------
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 395 diff changeset	10 // This file is part of eCos, the Embedded Configurable Operating System.
2912 3fa8710867ea * include/crc.h, src/crc16.c: Add cyg_crc16_accumulate() to continue a jld parents: 2729 diff changeset	11 // Copyright (C) 1998, 1999, 2000, 2001, 2002, 2009 Free Software Foundation, Inc.
277 544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	12 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 395 diff changeset	13 // eCos is free software; you can redistribute it and/or modify it under
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 395 diff changeset	14 // the terms of the GNU General Public License as published by the Free
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 395 diff changeset	15 // Software Foundation; either version 2 or (at your option) any later
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 395 diff changeset	16 // version.
277 544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	17 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 395 diff changeset	18 // eCos is distributed in the hope that it will be useful, but WITHOUT
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 395 diff changeset	19 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 395 diff changeset	20 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 395 diff changeset	21 // for more details.
277 544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	22 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 395 diff changeset	23 // You should have received a copy of the GNU General Public License
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 395 diff changeset	24 // along with eCos; if not, write to the Free Software Foundation, Inc.,
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 395 diff changeset	25 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
277 544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	26 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 395 diff changeset	27 // As a special exception, if other files instantiate templates or use
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 395 diff changeset	28 // macros or inline functions from this file, or you compile this file
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 395 diff changeset	29 // and link it with other works to produce a work based on this file,
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 395 diff changeset	30 // this file does not by itself cause the resulting work to be covered by
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 395 diff changeset	31 // the GNU General Public License. However the source code for this file
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 395 diff changeset	32 // must still be made available in accordance with section (3) of the GNU
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 395 diff changeset	33 // General Public License v2.
277 544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	34 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 395 diff changeset	35 // This exception does not invalidate any other reasons why a work based
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 395 diff changeset	36 // on this file might be covered by the GNU General Public License.
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 395 diff changeset	37 // -------------------------------------------
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 395 diff changeset	38 // ####ECOSGPLCOPYRIGHTEND####
277 544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	39 //==========================================================================
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	40 //#####DESCRIPTIONBEGIN####
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	41 //
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	42 // Author(s): gthomas
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	43 // Contributors: gthomas,asl
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	44 // Date: 2001-01-31
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	45 // Purpose:
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	46 // Description:
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	47 //
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	48 // This code is part of eCos (tm).
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	49 //
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	50 //####DESCRIPTIONEND####
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	51 //
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	52 //==========================================================================
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	53
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	54 #include <cyg/crc/crc.h>
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	55
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	56 // Table of CRC constants - implements x^16+x^12+x^5+1
395 9f81d6e38c3d Fixed 32-bit reliance. asl parents: 277 diff changeset	57 static const cyg_uint16 crc16_tab[] = {
277 544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	58 0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7,
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	59 0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef,
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	60 0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6,
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	61 0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de,
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	62 0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485,
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	63 0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d,
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	64 0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4,
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	65 0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc,
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	66 0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823,
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	67 0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b,
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	68 0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12,
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	69 0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a,
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	70 0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41,
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	71 0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49,
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	72 0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70,
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	73 0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78,
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	74 0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f,
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	75 0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067,
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	76 0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e,
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	77 0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256,
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	78 0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d,
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	79 0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	80 0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c,
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	81 0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634,
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	82 0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab,
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	83 0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3,
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	84 0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a,
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	85 0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92,
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	86 0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9,
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	87 0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1,
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	88 0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8,
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	89 0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0,
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	90 };
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	91
395 9f81d6e38c3d Fixed 32-bit reliance. asl parents: 277 diff changeset	92 cyg_uint16
277 544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	93 cyg_crc16(unsigned char *buf, int len)
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	94 {
2912 3fa8710867ea * include/crc.h, src/crc16.c: Add cyg_crc16_accumulate() to continue a jld parents: 2729 diff changeset	95 return cyg_crc16_accumulate(0, buf, len);
277 544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	96 }
544b77bfb6d5 * Created a new package from the CRC routines asl parents: diff changeset	97
2912 3fa8710867ea * include/crc.h, src/crc16.c: Add cyg_crc16_accumulate() to continue a jld parents: 2729 diff changeset	98 cyg_uint16
3fa8710867ea * include/crc.h, src/crc16.c: Add cyg_crc16_accumulate() to continue a jld parents: 2729 diff changeset	99 cyg_crc16_accumulate(cyg_uint16 crc16val, unsigned char *buf, int len)
3fa8710867ea * include/crc.h, src/crc16.c: Add cyg_crc16_accumulate() to continue a jld parents: 2729 diff changeset	100 {
3fa8710867ea * include/crc.h, src/crc16.c: Add cyg_crc16_accumulate() to continue a jld parents: 2729 diff changeset	101 int i;
3fa8710867ea * include/crc.h, src/crc16.c: Add cyg_crc16_accumulate() to continue a jld parents: 2729 diff changeset	102
3fa8710867ea * include/crc.h, src/crc16.c: Add cyg_crc16_accumulate() to continue a jld parents: 2729 diff changeset	103 for (i = 0; i < len; i++) {
3fa8710867ea * include/crc.h, src/crc16.c: Add cyg_crc16_accumulate() to continue a jld parents: 2729 diff changeset	104 crc16val = crc16_tab[((crc16val>>8) ^ *buf++) & 0xFF] ^ (crc16val << 8);
3fa8710867ea * include/crc.h, src/crc16.c: Add cyg_crc16_accumulate() to continue a jld parents: 2729 diff changeset	105 }
3fa8710867ea * include/crc.h, src/crc16.c: Add cyg_crc16_accumulate() to continue a jld parents: 2729 diff changeset	106 return crc16val;
3fa8710867ea * include/crc.h, src/crc16.c: Add cyg_crc16_accumulate() to continue a jld parents: 2729 diff changeset	107 }

Mercurial > ecos

annotate packages/services/crc/current/src/crc16.c @ 3292:7f8e529b4d82 default tip