ESP32 Forum

Posted: **Mon Mar 03, 2025 9:46 pm**

I am using Korvo 2 V3.1. My question is in with regards to the audio settings and how/where they are set. Please reference following example. My question is at bottom of thread.

https://github.com/espressif/esp-adf/bl ... st_board.c

Code: Untitled.c Select all

TEST_CASE("Playing while recording use TDM mode", "[esp_codec_dev]")



***Line 347***

ut_set_i2s_mode(I2S_COMM_MODE_STD, I2S_COMM_MODE_TDM); 



***Line 127*** i2s input init with 4 tdm channels

 i2s_tdm_slot_mask_t slot_mask = I2S_TDM_SLOT0 | I2S_TDM_SLOT1 | I2S_TDM_SLOT2 | I2S_TDM_SLOT3;

*    i2s_tdm_config_t tdm_cfg = {

*        .slot_cfg = I2S_TDM_PHILIPS_SLOT_DEFAULT_CONFIG(16, I2S_SLOT_MODE_STEREO, slot_mask),

*        .clk_cfg  = I2S_TDM_CLK_DEFAULT_CONFIG(16000),                                   

        .gpio_cfg = {

            .mclk = TEST_BOARD_I2S_MCK_PIN,

            .bclk = TEST_BOARD_I2S_BCK_PIN,

            .ws = TEST_BOARD_I2S_DATA_WS_PIN,

            .dout = TEST_BOARD_I2S_DATA_OUT_PIN,

            .din = TEST_BOARD_I2S_DATA_IN_PIN,

        },

    };

    tdm_cfg.slot_cfg.total_slot = 4;

...

Line187



***Line 412*** 

 // Play 16bits 2 channel

    esp_codec_dev_sample_info_t fs = {

        .sample_rate = 48000,

        .channel = 2,

        .bits_per_sample = 16,

    };

    ret = esp_codec_dev_open(play_dev, &fs);

    TEST_ESP_OK(ret);

    // Record 16bits 4 channel select channel 0 and 3

    fs.channel = 4;

    fs.channel_mask = ESP_CODEC_DEV_MAKE_CHANNEL_MASK(0) | ESP_CODEC_DEV_MAKE_CHANNEL_MASK(3);

    ret = esp_codec_dev_open(record_dev, &fs);

***Line 423***

Does code between 412-423 change the i2s audio setup at lines 127-187? Or does it only change the audio from codec to esp32s3?

ESP32 Forum

Esp_codec_dev_open w/esp_codec_dev_sample_info_t fs change initial i2s setup?

Esp_codec_dev_open w/esp_codec_dev_sample_info_t fs change initial i2s setup?