ESP-IDF
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Outline
#define ESP_EFUSE_LEN_OF_3_4_SCHEME_BLOCK_IN_BYTES
#define ESP_EFUSE_LEN_OF_REPEAT_BLOCK_IN_BYTES
#define COUNT_EFUSE_REG_PER_BLOCK
#define ESP_EFUSE_SECURE_VERSION_NUM_BLOCK
esp_efuse_utility_apply_34_encoding(const uint8_t *, uint32_t *, size_t);
Files
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SourceVuESP-IDF Framework and ExamplesESP-IDFcomponents/efuse/esp32/private_include/esp_efuse_utility.h
 
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/* * SPDX-FileCopyrightText: 2019-2021 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Apache-2.0 *//* ... */ #pragma once #ifdef __cplusplus extern "C" { #endif #define ESP_EFUSE_LEN_OF_3_4_SCHEME_BLOCK_IN_BYTES (24) #define ESP_EFUSE_LEN_OF_REPEAT_BLOCK_IN_BYTES (16) #define COUNT_EFUSE_REG_PER_BLOCK 8 /* The number of registers per block. */ #define ESP_EFUSE_SECURE_VERSION_NUM_BLOCK EFUSE_BLK3 #define ESP_EFUSE_FIELD_CORRESPONDS_CODING_SCHEME(blk, max_num_bit) \ esp_efuse_coding_scheme_t scheme = esp_efuse_get_coding_scheme(blk); \ if ((scheme == EFUSE_CODING_SCHEME_3_4 && max_num_bit > 192) || \ (scheme == EFUSE_CODING_SCHEME_REPEAT && max_num_bit > 128)) { \ return false; \ }{...} ... 5 defines/* @brief Encode one or more sets of 6 byte sequences into * 8 bytes suitable for 3/4 Coding Scheme. * * This function is only useful if the CODING_SCHEME efuse * is set to value 1 for 3/4 Coding Scheme. * * @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. * @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. * @param in_bytes_len. Length of array pointed to by in_bytes, in bytes. Must be a multiple of 6. * * @return ESP_ERR_INVALID_ARG if either pointer is null or in_bytes_len is not a multiple of 6. ESP_OK otherwise. *//* ... */ esp_err_t esp_efuse_utility_apply_34_encoding(const uint8_t *in_bytes, uint32_t *out_words, size_t in_bytes_len); #ifdef __cplusplus }{...} #endif
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