i2s_alloc_dma_desc() function

Allocate memory for I2S DMA descriptor and DMA buffer

Syntax

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Summary

Declaration

Definition

from i2s_private.h:260

esp_err_t i2s_alloc_dma_desc(i2s_chan_handle_t handle, uint32_t num, uint32_t bufsize);

Implemented in i2s_common.c:484

Arguments

Argument

Description

handle

I2S channel handle

num

Number of DMA descriptors

bufsize

The DMA buffer size

Return value

- ESP_OK Allocate memory success - ESP_ERR_INVALID_ARG NULL pointer or bufsize is too big - ESP_ERR_NO_MEM No memory for DMA descriptor and DMA buffer

Examples

References

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i2s_alloc_dma_desc() function

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i2s_alloc_dma_desc() function

Syntax

Arguments

Return value

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Examples

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