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feat(i2s): enable dma burst size configuration

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Chen Chen
2026-09-01 16:11:57 +08:00
parent 3cd64a905d
commit bea9fd822c
7 changed files with 112 additions and 70 deletions
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components/esp_driver_i2s/include/driver/i2s_common.h
+5
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@@ -24,6 +24,7 @@ extern "C" {
.role = i2s_role, \
.dma_desc_num = 6, \
.dma_frame_num = 240, \
.dma_burst_size = 0, \
.auto_clear_after_cb = false, \
.auto_clear_before_cb = false, \
.dma_buffer_in_psram = false, \
@@ -73,6 +74,10 @@ typedef struct {
uint32_t dma_frame_num; /*!< I2S frame number in one DMA buffer. One frame means one-time sample data in all slots,
* it should be the multiple of `3` when the data bit width is 24.
*/
size_t dma_burst_size; /*!< DMA data burst size in bytes. Set to 0 to use driver default (32).
* When non-zero, must be a chip-supported power of 2 (see GDMA driver or chip TRM).
* Ignored on chips that do not support configurable burst size.
*/
union {
bool auto_clear; /*!< Alias of `auto_clear_after_cb` */
bool auto_clear_after_cb; /*!< Set to auto clear DMA TX buffer after `on_sent` callback, I2S will always send zero automatically if no data to send.