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44 lines
1.3 KiB
C
44 lines
1.3 KiB
C
/*
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* Copyright 2024 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* 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,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <stdint.h>
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void crc_init(void);
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/*
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* calculate the CRC32 for a stream of bytes.
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* NOTE: not safe to call from ISR
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*/
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uint32_t crc_calculate_bytes(const uint8_t* data, unsigned int data_length);
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/*
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* calculate the CRC32 for a stream of bytes from flash
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* NOTE: not safe to call from ISR
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*/
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uint32_t crc_calculate_flash(uint32_t address, unsigned int num_bytes);
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/*
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* calculate a 8-bit CRC of a given byte sequence. Note that this is not using
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* the standard CRC-8 polynomial, because the standard polynomial isn't very
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* good.
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*/
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uint8_t crc8_calculate_bytes(const uint8_t *data, unsigned int data_length);
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void crc_calculate_incremental_start(void);
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void crc_calculate_incremental_stop(void);
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