kopia lustrzana https://github.com/espressif/esp-idf
44 wiersze
1.9 KiB
C
44 wiersze
1.9 KiB
C
/*
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* SPDX-FileCopyrightText: 2019-2021 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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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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#define ESP_EFUSE_LEN_OF_3_4_SCHEME_BLOCK_IN_BYTES (24)
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#define ESP_EFUSE_LEN_OF_REPEAT_BLOCK_IN_BYTES (16)
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#define COUNT_EFUSE_REG_PER_BLOCK 8 /* The number of registers per block. */
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#define ESP_EFUSE_SECURE_VERSION_NUM_BLOCK EFUSE_BLK3
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#define ESP_EFUSE_FIELD_CORRESPONDS_CODING_SCHEME(blk, max_num_bit) \
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esp_efuse_coding_scheme_t scheme = esp_efuse_get_coding_scheme(blk); \
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if ((scheme == EFUSE_CODING_SCHEME_3_4 && max_num_bit > 192) || \
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(scheme == EFUSE_CODING_SCHEME_REPEAT && max_num_bit > 128)) { \
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return false; \
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}
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/* @brief Encode one or more sets of 6 byte sequences into
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* 8 bytes suitable for 3/4 Coding Scheme.
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*
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* This function is only useful if the CODING_SCHEME efuse
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* is set to value 1 for 3/4 Coding Scheme.
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*
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* @param[in] in_bytes Pointer to a sequence of bytes to encode for 3/4 Coding Scheme. Must have length in_bytes_len. After being written to hardware, these bytes will read back as little-endian words.
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* @param[out] out_words Pointer to array of words suitable for writing to efuse write registers. Array must contain 2 words (8 bytes) for every 6 bytes in in_bytes_len. Can be a pointer to efuse write registers.
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* @param in_bytes_len. Length of array pointed to by in_bytes, in bytes. Must be a multiple of 6.
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*
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* @return ESP_ERR_INVALID_ARG if either pointer is null or in_bytes_len is not a multiple of 6. ESP_OK otherwise.
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*/
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esp_err_t esp_efuse_utility_apply_34_encoding(const uint8_t *in_bytes, uint32_t *out_words, size_t in_bytes_len);
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#ifdef __cplusplus
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}
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#endif
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