wlan_bl808_rtthread/utils/include/utils_crc.h

/*
 * Copyright (c) 2016-2022 Bouffalolab.
 *
 * This file is part of
 *     *** Bouffalolab Software Dev Kit ***
 *      (see www.bouffalolab.com).
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *   1. Redistributions of source code must retain the above copyright notice,
 *      this list of conditions and the following disclaimer.
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 *      this list of conditions and the following disclaimer in the documentation
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 *   3. Neither the name of Bouffalo Lab nor the names of its contributors
 *      may be used to endorse or promote products derived from this software
 *      without specific prior written permission.
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 */
#ifndef __UTILS_CRC_H__
#define __UTILS_CRC_H__
#include <stdint.h>

uint16_t utils_crc16(void *dataIn, uint32_t len);
uint32_t utils_crc32(void *dataIn, uint32_t len);
uint16_t utils_crc16_ccitt(void *dataIn, uint32_t len);

struct crc32_stream_ctx {
  uint32_t crc;
};

void utils_crc32_stream_init(struct crc32_stream_ctx *ctx);
void utils_crc32_stream_feed(struct crc32_stream_ctx *ctx, uint8_t data);
void utils_crc32_stream_feed_block(struct crc32_stream_ctx *ctx, uint8_t *data, uint32_t len);
uint32_t utils_crc32_stream_results(struct crc32_stream_ctx *ctx);

#endif