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SourceVuESP-IDF Framework and ExamplesESP-IDFi2s_obj_t::rx

i2s_obj_t::rx field

DMA Rx buffer

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Summary

Declaration

from i2s_legacy.c:140

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Code

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i2s_dma_t *rx; /*!< DMA Rx buffer*/

i2s_legacy.c:140

if ((status & I2S_LL_EVENT_RX_EOF) && p_i2s->rx) {

i2s_legacy.c:315

i2s_intr_handler_default()

if (xQueueIsQueueFullFromISR(p_i2s->rx->queue)) {

i2s_legacy.c:319

i2s_intr_handler_default()

xQueueReceiveFromISR(p_i2s->rx->queue, &dummy, &tmp);

i2s_legacy.c:320

i2s_intr_handler_default()

xQueueSendFromISR(p_i2s->rx->queue, &(((lldesc_t *)finish_desc)->buf), &tmp);

i2s_legacy.c:328

i2s_intr_handler_default()

p_i2s[i2s_num]->rx->curr_ptr = NULL;

i2s_legacy.c:416

p_i2s[i2s_num]->rx->rw_pos = 0;

i2s_legacy.c:417

i2s_hal_rx_start_link(&(p_i2s[i2s_num]->hal), (uint32_t) p_i2s[i2s_num]->rx->desc[0]);

i2s_legacy.c:446

xSemaphoreTake(p_i2s[i2s_num]->rx->mux, portMAX_DELAY);

i2s_legacy.c:1124

p_i2s[i2s_num]->rx->buf_size = buf_size;

i2s_legacy.c:1184

ret = i2s_realloc_dma_buffer(i2s_num, p_i2s[i2s_num]->rx);

i2s_legacy.c:1185

xQueueReset(p_i2s[i2s_num]->rx->queue);

i2s_legacy.c:1186

xSemaphoreGive(p_i2s[i2s_num]->rx->mux);

i2s_legacy.c:1200

xSemaphoreTake(p_i2s[i2s_num]->rx->mux, portMAX_DELAY);

i2s_legacy.c:1259

i2s_set_pdm_rx_down_sample()

xSemaphoreGive(p_i2s[i2s_num]->rx->mux);

i2s_legacy.c:1264

i2s_set_pdm_rx_down_sample()

ESP_RETURN_ON_ERROR(i2s_create_dma_object(i2s_num, &p_i2s[i2s_num]->rx), TAG, "I2S RX DMA object create failed");

i2s_legacy.c:1297

i2s_dma_object_init()

p_i2s[i2s_num]->rx->buf_size = buf_size;

i2s_legacy.c:1298

i2s_dma_object_init()

ESP_RETURN_ON_ERROR(i2s_realloc_dma_buffer(i2s_num, p_i2s[i2s_num]->rx), TAG, "Allocate I2S dma rx buffer failed");

i2s_legacy.c:1548

i2s_init_legacy()

i2s_destroy_dma_object(i2s_num, &obj->rx);

i2s_legacy.c:1596

i2s_driver_uninstall()

ESP_RETURN_ON_FALSE((p_i2s[i2s_num]->rx), ESP_ERR_INVALID_ARG, TAG, "RX mode is not enabled");

i2s_legacy.c:1812

xSemaphoreTake(p_i2s[i2s_num]->rx->mux, portMAX_DELAY);

i2s_legacy.c:1813

if (p_i2s[i2s_num]->rx->rw_pos == p_i2s[i2s_num]->rx->buf_size || p_i2s[i2s_num]->rx->curr_ptr == NULL) {

i2s_legacy.c:1818

if (xQueueReceive(p_i2s[i2s_num]->rx->queue, &p_i2s[i2s_num]->rx->curr_ptr, ticks_to_wait) == pdFALSE) {

i2s_legacy.c:1819

p_i2s[i2s_num]->rx->rw_pos = 0;

i2s_legacy.c:1822

data_ptr = (char *)p_i2s[i2s_num]->rx->curr_ptr;

i2s_legacy.c:1824

data_ptr += p_i2s[i2s_num]->rx->rw_pos;

i2s_legacy.c:1825

bytes_can_read = p_i2s[i2s_num]->rx->buf_size - p_i2s[i2s_num]->rx->rw_pos;

i2s_legacy.c:1826

p_i2s[i2s_num]->rx->rw_pos += bytes_can_read;

i2s_legacy.c:1833

xSemaphoreGive(p_i2s[i2s_num]->rx->mux);

i2s_legacy.c:1839

if (p_i2s[i2s_num]->rx && p_i2s[i2s_num]->rx->buf != NULL && p_i2s[i2s_num]->rx->buf_size != 0) {

i2s_legacy.c:1888

i2s_zero_dma_buffer()

memset(p_i2s[i2s_num]->rx->buf[i], 0, p_i2s[i2s_num]->rx->buf_size);

i2s_legacy.c:1890

i2s_zero_dma_buffer()

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Data Use

i2s_obj_t::rx is read by 9 functions:

i2s_obj_t::rx

i2s_intr_handler_default()

i2s_set_pdm_rx_down_sample()

i2s_dma_object_init()

i2s_init_legacy()

i2s_zero_dma_buffer()

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