27 lines
443 B
C
27 lines
443 B
C
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/*
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* Copyright (c) 2023 HPMicro
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*
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*/
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#include "hpm_crc32.h"
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uint32_t crc32(const uint8_t *buf, uint32_t len)
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{
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uint8_t i;
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uint32_t crc = 0xFFFFFFFF;
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while (len--) {
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crc ^= *buf++;
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for (i = 0; i < 8; ++i) {
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if (crc & 1)
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crc = (crc >> 1) ^ 0xEDB88320;
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else
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crc = (crc >> 1);
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}
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}
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return ~crc;
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}
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