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SourceVuESP-IDF Framework and ExamplesESP-IDFI2S_DMA_BUFFER_MAX_SIZE

I2S_DMA_BUFFER_MAX_SIZE macro

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Summary

Declaration

from i2s_common.c:74

#define I2S_DMA_BUFFER_MAX_SIZE DMA_DESCRIPTOR_BUFFER_MAX_SIZE_4B_ALIGNED

References

Code

Location

#define I2S_DMA_BUFFER_MAX_SIZE DMA_DESCRIPTOR_BUFFER_MAX_SIZE_4B_ALIGNED

i2s_common.c:74

#define I2S_DMA_BUFFER_MAX_SIZE 4092

i2s_legacy.c:93

if (bufsize > I2S_DMA_BUFFER_MAX_SIZE) {

i2s_common.c:448

uint32_t frame_num = I2S_DMA_BUFFER_MAX_SIZE / bytes_per_frame;

i2s_common.c:449

ESP_RETURN_ON_FALSE(bufsize <= I2S_DMA_BUFFER_MAX_SIZE, ESP_ERR_INVALID_ARG, TAG, "dma buffer can't be bigger than %d", I2S_DMA_BUFFER_MAX_SIZE);

i2s_common.c:488

p_i2s[i2s_num]->dma_frame_num = (p_i2s[i2s_num]->dma_frame_num * bytes_per_frame > I2S_DMA_BUFFER_MAX_SIZE) ?

i2s_legacy.c:526

I2S_DMA_BUFFER_MAX_SIZE / bytes_per_frame : p_i2s[i2s_num]->dma_frame_num;

i2s_legacy.c:527

if (bufsize > I2S_DMA_BUFFER_MAX_SIZE) {

i2s_legacy.c:550

uint32_t frame_num = I2S_DMA_BUFFER_MAX_SIZE / bytes_per_frame;

i2s_legacy.c:551