66 lines
1.5 KiB
C
66 lines
1.5 KiB
C
/* GMR-1 CRC */
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/* See GMR-1 05.003 (ETSI TS 101 376-5-3 V1.2.1) - Section 4.3 */
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/* (C) 2011-2019 by Sylvain Munaut <tnt@246tNt.com>
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*! \addtogroup crc
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* @{
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*/
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/*! \file l1/crc.c
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* \brief Osmocom GMR-1 CRC implementation
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*/
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#include <stdint.h>
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#include <osmocom/core/bits.h>
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#include <osmocom/core/crcgen.h>
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/*! \brief GMR-1 CRC8
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* g8(D) = D8 + D7 + D4 + D3 + D + 1
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*/
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const struct osmo_crc8gen_code gmr1_crc8 = {
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.bits = 8,
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.poly = 0x9b,
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.init = 0x00,
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.remainder = 0x00,
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};
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/*! \brief GMR-1 CRC12
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* g12(D) = D12 + D11 + D3 + D2 + D + 1
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*/
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const struct osmo_crc16gen_code gmr1_crc12 = {
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.bits = 12,
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.poly = 0x80f,
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.init = 0x0000,
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.remainder = 0x0000,
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};
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/*! \brief GMR-1 CRC16
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* g16(D) = D16 + D12 + D5 + 1
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*/
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const struct osmo_crc16gen_code gmr1_crc16 = {
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.bits = 16,
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.poly = 0x1021,
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.init = 0x0000,
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.remainder = 0x0000,
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};
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/*! @} */
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