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SourceVuESP-IDF Framework and ExamplesESP-IDFi2s_dma_t::bufs

i2s_dma_t::bufs field

dma buffer array

Syntax

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Summary

Declaration

from i2s_private.h:126

uint8_t **bufs;

References

Code

Location

Referrer

uint8_t **bufs; /*!< dma buffer array */

i2s_private.h:126

if (handle->dma.bufs[i]) {

i2s_common.c:463

i2s_free_dma_desc()

free(handle->dma.bufs[i]);

i2s_common.c:464

i2s_free_dma_desc()

handle->dma.bufs[i] = NULL;

i2s_common.c:465

i2s_free_dma_desc()

if (handle->dma.bufs) {

i2s_common.c:472

i2s_free_dma_desc()

free(handle->dma.bufs);

i2s_common.c:473

i2s_free_dma_desc()

handle->dma.bufs = NULL;

i2s_common.c:474

i2s_free_dma_desc()

handle->dma.bufs = (uint8_t **)heap_caps_calloc(num, sizeof(uint8_t *), I2S_MEM_ALLOC_CAPS);

i2s_common.c:495

i2s_alloc_dma_desc()

handle->dma.bufs[i] = (uint8_t *) i2s_dma_calloc(handle, 1, bufsize * sizeof(uint8_t));

i2s_common.c:506

i2s_alloc_dma_desc()

ESP_GOTO_ON_FALSE(handle->dma.bufs[i], ESP_ERR_NO_MEM, err, TAG, "allocate DMA buffer failed");

i2s_common.c:507

i2s_alloc_dma_desc()

handle->dma.desc[i]->buf = handle->dma.bufs[i];

i2s_common.c:511

i2s_alloc_dma_desc()

ESP_LOGV(TAG, "desc addr: %8p\tbuffer addr:%8p", handle->dma.desc[i], handle->dma.bufs[i]);

i2s_common.c:512

i2s_alloc_dma_desc()

return (size_t) & (((i2s_chan_handle_t)0)->dma.bufs);

i2s_platform.c:122

i2s_platform_get_dma_buffer_offset()

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Data Use

i2s_dma_t::bufs is written by 2 functions and is read by 3 functions:

i2s_free_dma_desc()

i2s_alloc_dma_desc()

i2s_dma_t::bufs

i2s_free_dma_desc()

i2s_alloc_dma_desc()

i2s_platform_get_dma_buffer_offset()

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