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SourceVuESP-IDF Framework and ExamplesESP-IDFesp_himem_alloc()

esp_himem_alloc() function

Allocate a block in high memory

Syntax

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Summary

Declaration

Definition

from himem.h:41

esp_err_t esp_himem_alloc(size_t size, esp_himem_handle_t *handle_out);

Implemented in esp_himem.c:191

Arguments

Argument

Description

size

Size of the to-be-allocated block, in bytes. Note that this needs to be a multiple of the external RAM mmu block size (32K).

handle_out

Handle to be returned

Return value

- ESP_OK if succesful - ESP_ERR_NO_MEM if out of memory - ESP_ERR_INVALID_SIZE if size is not a multiple of 32K

Examples

esp_himem_alloc() is referenced by 1 libraries and example projects:

himem sample

References

from 0/1 examples

Code

Location

esp_err_t esp_himem_alloc(size_t size, esp_himem_handle_t *handle_out)

esp_himem.c:191

esp_err_t esp_himem_alloc(size_t size, esp_himem_handle_t *handle_out);

himem.h:41

Call Tree

from 0/1 examples

esp_himem_alloc() calls 5 functions:

esp_himem_alloc()

Data Use

from 0/1 examples

esp_himem_alloc() reads 1 variable and writes 2 variables:

esp_himem_ramdata_t::block

esp_himem_alloc()

esp_himem_ramdata_t::block_ct

esp_himem_ramdata_t::block

Class Tree

from 0/1 examples

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Override Tree

from 0/1 examples

All items filtered out

Implementations

from 0/1 examples

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Instances

from 0/1 examples

Lifecycle

from 0/1 examples

esp_himem_alloc() allocates 1 types and frees 1 types:

esp_himem_ramdata_t

esp_himem_alloc()

esp_himem_ramdata_t