mirror of
https://github.com/espressif/esp-idf.git
synced 2025-10-31 21:14:37 +00:00
44 lines
1.9 KiB
C
44 lines
1.9 KiB
C
/*
|
|
* 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; \
|
|
}
|
|
|
|
/* @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
|