f230ba7b34
N/A Signed-off-by: zhouliang3 <zhouliang3@xiaomi.com> Change-Id: I3c53bf25541c1811a05d025b39dfe24cb0613b72 (cherry picked from commit 07b2bd769e608d4c46f8e039d091514b1b3d3ff0)
55 lines
1.9 KiB
C
55 lines
1.9 KiB
C
/****************************************************************************
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* libs/libc/misc/lib_crc8table.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <sys/types.h>
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#include <stdint.h>
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#include <crc8.h>
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: crc8table
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*
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* Description:
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* Return a 8-bit CRC of the contents of the 'src' buffer, length 'len'
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* using a CRC with crc table used for calculation.
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*
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****************************************************************************/
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uint8_t crc8table(const uint8_t table[256], const uint8_t *src,
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size_t len, uint8_t crc8val)
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{
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size_t i;
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crc8val ^= 0xff;
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for (i = 0; i < len; i++)
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{
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crc8val = table[crc8val ^ src[i]];
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}
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return crc8val ^ 0xff;
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}
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