spi_bus_dma_memory_alloc() function

Helper function for malloc DMA capable memory for SPI driver

Syntax

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Declaration

Definition

from spi_common.h:184

void *spi_bus_dma_memory_alloc(spi_host_device_t host_id, size_t size, uint32_t extra_heap_caps);

Implemented in spi_common.c:926

Arguments

Argument

Description

host_id

SPI peripheral who will using the memory

size

Size in bytes, the amount of memory to allocate

extra_heap_caps

Extra heap caps based on MALLOC_CAP_DMA

Return value

Pointer to the memory if allocated successfully

Notes

This API will take care of the cache and hardware alignment internally. To free/release memory allocated by this helper function, simply calling `free()`

Examples

spi_bus_dma_memory_alloc() is referenced by 6 libraries and example projects:

References

from examples

spi_bus_dma_memory_alloc() function

Syntax

Arguments

Return value

Notes

Examples

References

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