20 lines
313 B
C
20 lines
313 B
C
/*
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* Copyright (c) 2018 Google LLC.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/sys/crc.h>
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uint8_t crc7_be(uint8_t seed, const uint8_t *src, size_t len)
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{
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while (len--) {
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uint8_t e = seed ^ *src++;
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uint8_t f = e ^ (e >> 4) ^ (e >> 7);
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seed = (f << 1) ^ (f << 4);
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}
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return seed;
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}
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