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SourceVuESP-IDF Framework and ExamplesESP-IDFesp_efuse_read_block()

esp_efuse_read_block() function

Read key to efuse block starting at the offset and the required size.

Syntax

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Summary

Declaration

Definition

from esp_efuse.h:260

esp_err_t esp_efuse_read_block(esp_efuse_block_t blk, void* dst_key, size_t offset_in_bits, size_t size_bits);

Implemented in esp_efuse_api.c:207

Arguments

Argument

Declared as

Description

blk

esp_efuse_block_t

Block number of eFuse.

dst_key

void*

A pointer to array that will contain the result of reading.

offset_in_bits

size_t

Start bit in block.

size_bits

size_t

The number of bits required to read.

Return value

- ESP_OK: The operation was successfully completed. - ESP_ERR_INVALID_ARG: Error in the passed arguments. - ESP_ERR_CODING: Error range of data does not match the coding scheme.

Notes

Please note that reading in the batch mode does not show uncommitted changes.

References

Code

Location

Referrer

esp_err_t esp_efuse_read_block(esp_efuse_block_t blk, void* dst_key, size_t offset_in_bits, size_t size_bits)

esp_efuse_api.c:207

esp_err_t esp_efuse_read_block(esp_efuse_block_t blk, void* dst_key, size_t offset_in_bits, size_t size_bits);

esp_efuse.h:260

esp_err_t err = esp_efuse_read_block(blk, &ret_val, num_reg * 32, 32);

esp_efuse_api.c:179

esp_efuse_read_reg()

esp_efuse_read_block(block, data, 0, blk_len_bit);

esp_efuse_api.c:318

destroy_block()

esp_err_t err = esp_efuse_read_block(block, &key, 0, blk_len_bit);

esp_efuse_api_key.c:85

esp_efuse_block_is_empty()

Call Tree

esp_efuse_read_block() is called by 3 functions and calls 1 function:

esp_efuse_read_reg()

destroy_block()

esp_efuse_block_is_empty()

esp_efuse_read_block()

esp_efuse_read_field_blob()

Data Use

esp_efuse_read_block() reads 2 variables:

esp_efuse_block_t::EFUSE_BLK0

esp_efuse_block_t::EFUSE_BLK_MAX

esp_efuse_read_block()

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