Espressif ESP32-S2 Programming Manual page 826

Chapter 2. API Reference
BLOCK_KEY0
00000000 00000000 00000000 00000000 00000000 00000000
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BLOCK_KEY1
00000000 00000000 00000000 00000000 00000000 00000000
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BLOCK_KEY2
00000000 00000000 00000000 00000000 00000000 00000000
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BLOCK_KEY3
00000000 00000000 00000000 00000000 00000000 00000000
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BLOCK_KEY4
00000000 00000000 00000000 00000000 00000000 00000000
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BLOCK_KEY5
00000000 00000000 00000000 00000000 00000000 00000000
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BLOCK_SYS_DATA2 (BLOCK10
00000000 00000000 00000000 00000000 00000000 00000000
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espefuse.py v3.1-dev
Header File
• components/efuse/include/esp_efuse.h
Functions
esp_err_t esp_efuse_read_field_blob(const
Reads bits from EFUSE field and writes it into an array.
The number of read bits will be limited to the minimum value from the description of the bits in "field"
structure or"dst_size_bits" required size. Use"esp_efuse_get_field_size()" function to determine the length
of the field.
Note Please note that reading in the batch mode does not show uncommitted changes.
Return
• ESP_OK: The operation was successfully completed.
• ESP_ERR_INVALID_ARG: Error in the passed arguments.
Parameters
• [in] field: A pointer to the structure describing the fields of efuse.
• [out] dst: A pointer to array that will contain the result of reading.
• [in] dst_size_bits: The number of bits required to read. If the requested number of bits
is greater than the field, the number will be limited to the field size.
bool esp_efuse_read_field_bit(const
Read a single bit eFuse field as a boolean value.
Note The value must exist and must be a single bit wide. If there is any possibility of an error in the provided
arguments, call esp_efuse_read_field_blob() and check the returned value instead.
Note If assertions are enabled and the parameter is invalid, execution will abort
Note Please note that reading in the batch mode does not show uncommitted changes.
Return
• true: The field parameter is valid and the bit is set.
• false: The bit is not set, or the parameter is invalid and assertions are disabled.
Parameters
• [in] field: A pointer to the structure describing the fields of efuse.
esp_err_t esp_efuse_read_field_cnt(const
Reads bits from EFUSE field and returns number of bits programmed as "1".
If the bits are set not sequentially, they will still be counted.
Note Please note that reading in the batch mode does not show uncommitted changes.
Return
• ESP_OK: The operation was successfully completed.
• ESP_ERR_INVALID_ARG: Error in the passed arguments.
Espressif Systems
(BLOCK4 ) [4 ] read_regs: 00000000
(BLOCK5 ) [5 ] read_regs: 00000000
(BLOCK6 ) [6 ] read_regs: 00000000
(BLOCK7 ) [7 ] read_regs: 00000000
(BLOCK8 ) [8 ] read_regs: 00000000
(BLOCK9 ) [9 ] read_regs: 00000000
) [10] read_regs: 00000000
dst_size_bits)
esp_efuse_desc_t
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esp_efuse_desc_t *field[], void *dst, size_t
*field[])
esp_efuse_desc_t *field[], size_t *out_cnt)
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Release v4.4