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SourceVuESP-IDF Framework and ExamplesESP-IDFesp_mmu_unmap()

esp_mmu_unmap() function

Unmap a previously mapped virtual memory block

Syntax

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Summary

Declaration

Definition

from esp_mmu_map.h:100

esp_err_t esp_mmu_unmap(void *ptr);

Implemented in esp_mmu_map.c:632

Arguments

Argument

Description

ptr

Start address of the virtual memory

Return value

- ESP_OK - ESP_ERR_INVALID_ARG: Null pointer - ESP_ERR_NOT_FOUND: Vaddr is not in external memory, or it's not mapped yet

Notes

This API does not guarantee thread safety

References

Code

Location

Referrer

esp_err_t esp_mmu_unmap(void *ptr)

esp_mmu_map.c:632

esp_err_t esp_mmu_unmap(void *ptr);

esp_mmu_map.h:100

esp_mmu_unmap((void *)vaddr_list[i]);

flash_mmap.c:224

spi_flash_mmap_pages()

ret = esp_mmu_unmap((void *)block->vaddr_list[i]);

flash_mmap.c:242

spi_flash_munmap()

Call Tree

esp_mmu_unmap() is called by 2 functions and calls 5 functions:

spi_flash_mmap_pages()

spi_flash_munmap()

esp_mmu_unmap()

esp_log_timestamp()

esp_log_write()

mmu_ll_vaddr_to_laddr()

s_do_unmapping()

Data Use

esp_mmu_unmap() reads 17 variables and writes 1 variable:

esp_log_level_t::ESP_LOG_ERROR

esp_log_level_t::ESP_LOG_WARN

esp_log_level_t::ESP_LOG_INFO

esp_log_level_t::ESP_LOG_DEBUG

esp_log_level_t::ESP_LOG_VERBOSE

mem_block_::laddr_start

mem_block_::laddr_end

mem_block_::vaddr_start

mem_block_::size

mem_block_::entries

mem_region_::end

mem_region_::free_head

mem_region_::max_slot_size

mmu_ctx_t::num_regions

mmu_ctx_t::mem_regions

esp_mmu_unmap()

mem_region_::max_slot_size

Class Tree

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Override Tree

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Implementations

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Instances

Lifecycle

esp_mmu_unmap() allocates 1 types:

esp_mmu_unmap()