77 lines
3.0 KiB
C
77 lines
3.0 KiB
C
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/**
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* Copyright (c) CompanyNameMagicTag 2018-2020. All rights reserved.
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* Description: hct_crc Cyclic redundancy check (CRC).
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*/
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#ifndef __SOC_MDM_CRC_H__
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#define __SOC_MDM_CRC_H__
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#include <soc_types_rom.h>
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#include <soc_mdm_types_rom.h>
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/**
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* @ingroup hct_crc
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* @brief Generates a 16-bit CRC value.
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*
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* @par Description:
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* Generates a 16-bit CRC value. The polynomial is as follows: x16 + x12 + x5 + 1 (0x1021)
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*
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* @attention The input argument needs to be checked by the user, and the buffer cannot be empty.
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* @param crc_start [IN] Type #td_u16 The original initial value is 0. Piecewise calculation is used. The
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* previous calculation result is transferred each time.
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* @param buf [IN] Type #td_u8* Pointer to the checked buffer
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* @param len [IN] Type #td_u32 Length of the checked buffer (unit: byte)
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*
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* @retval Type #td_u16 CRC value
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*
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* @par Dependency:
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* @li soc_mdm_crc.h: Describes CRC APIs.
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* @see None
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* @since DW21_V100R001C00
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*/
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EXT_EXTERN td_u16 uapi_crc16(td_u16 crc_start, EXT_CONST td_u8 *buf, td_u32 len);
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/**
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* @ingroup hct_crc
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* @brief Generates a 32-bit CRC value.
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*
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* @par Description:
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* Generates a 32-bit CRC value. The 32-bit CRC algorithm complies with the IEEE 802.3 CRC-32 standard (0x04C11DB7).
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*
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* @attention The input argument needs to be checked by the user, and the buffer cannot be empty.
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* @param crc_start [IN] Type #td_u32 Initial CRC value. The original initial value is 0. Piecewise calculation
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* is used. The previous calculation result is transferred each time.
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* @param buf [IN] Type #td_u8* Pointer to the checked buffer
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* @param len [IN] Type #td_u32 Length of the checked buffer (unit: byte)
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*
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* @retval Type #td_u32 CRC value
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* @par Dependency:
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* @li soc_mdm_crc.h: Describes CRC APIs.
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* @see None
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* @since DW21_V100R001C00
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*/
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EXT_EXTERN td_u32 uapi_crc32(td_u32 crc_start, EXT_CONST td_u8 *buf, td_u32 len);
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/**
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* @ingroup hct_crc
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* @brief Generates a 32-bit CRC value without ones complement.
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*
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* @par Description:
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* Generates a 32-bit CRC value without ones complement. The 32-bit CRC algorithm complies with the 1901.1 CRC-32
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* standard (0x04C11DB7).
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*
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* @attention The input argument needs to be checked by the user, and the buffer cannot be empty.
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* @param crc_start [IN] Type #td_u32 Initial CRC value. The original initial value is 0. Piecewise calculation
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* is used. The previous calculation result is transferred each time.
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* @param buf [IN] Type #td_u8* Pointer to the checked buffer
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* @param len [IN] Type #td_u32 Length of the checked buffer (unit: byte)
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*
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* @retval Type #td_u32 CRC value
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* @par Dependency:
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* @li soc_mdm_crc.h: Describes CRC APIs.
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* @see None
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* @since DW21_V100R001C00
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*/
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EXT_EXTERN td_u32 uapi_crc32_no_comp(td_u32 crc_start, EXT_CONST td_u8 *buf, td_u32 len);
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#endif
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