kopia lustrzana https://github.com/espressif/esp-idf
106 wiersze
3.0 KiB
C
106 wiersze
3.0 KiB
C
// Copyright 2015-2019 Espressif Systems (Shanghai) PTE LTD
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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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#pragma once
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdint.h>
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// This header is only a wrapper on ROM CRC API
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#include "esp_rom_crc.h"
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/**
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* @brief CRC32 value in little endian.
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*
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* @param crc: Initial CRC value (result of last calculation or 0 for the first time)
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* @param buf: Data buffer that used to calculate the CRC value
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* @param len: Length of the data buffer
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* @return CRC32 value
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*/
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static inline uint32_t esp_crc32_le(uint32_t crc, uint8_t const *buf, uint32_t len)
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{
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return esp_rom_crc32_le(crc, buf, len);
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}
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/**
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* @brief CRC32 value in big endian.
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*
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* @param crc: Initial CRC value (result of last calculation or 0 for the first time)
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* @param buf: Data buffer that used to calculate the CRC value
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* @param len: Length of the data buffer
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* @return CRC32 value
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*/
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static inline uint32_t esp_crc32_be(uint32_t crc, uint8_t const *buf, uint32_t len)
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{
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return esp_rom_crc32_be(crc, buf, len);
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}
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/**
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* @brief CRC16 value in little endian.
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*
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* @param crc: Initial CRC value (result of last calculation or 0 for the first time)
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* @param buf: Data buffer that used to calculate the CRC value
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* @param len: Length of the data buffer
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* @return CRC16 value
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*/
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static inline uint16_t esp_crc16_le(uint16_t crc, uint8_t const *buf, uint32_t len)
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{
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return esp_rom_crc16_le(crc, buf, len);
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}
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/**
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* @brief CRC16 value in big endian.
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*
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* @param crc: Initial CRC value (result of last calculation or 0 for the first time)
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* @param buf: Data buffer that used to calculate the CRC value
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* @param len: Length of the data buffer
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* @return CRC16 value
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*/
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static inline uint16_t esp_crc16_be(uint16_t crc, uint8_t const *buf, uint32_t len)
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{
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return esp_rom_crc16_be(crc, buf, len);
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}
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/**
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* @brief CRC8 value in little endian.
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*
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* @param crc: Initial CRC value (result of last calculation or 0 for the first time)
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* @param buf: Data buffer that used to calculate the CRC value
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* @param len: Length of the data buffer
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* @return CRC8 value
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*/
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static inline uint8_t esp_crc8_le(uint8_t crc, uint8_t const *buf, uint32_t len)
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{
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return esp_rom_crc8_le(crc, buf, len);
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}
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/**
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* @brief CRC8 value in big endian.
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*
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* @param crc: Initial CRC value (result of last calculation or 0 for the first time)
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* @param buf: Data buffer that used to calculate the CRC value
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* @param len: Length of the data buffer
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* @return CRC8 value
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*/
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static inline uint8_t esp_crc8_be(uint8_t crc, uint8_t const *buf, uint32_t len)
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{
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return esp_rom_crc8_be(crc, buf, len);
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}
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#ifdef __cplusplus
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}
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#endif
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