ESP-ADF example (esp-adf\examples\recorder\pipeline_raw_http) implementation with I2S MEMS Microphone Breakout - SPH0645

[worrier]

I found an example in esp-adf/examples/recorder/pipeline_raw_http. The example is for audio development boards such as the Krovo 2 board, and it uses the built-in analog microphone. I want to update this code for the ESP32-S3 and interface it with the MEMS Microphone Breakout - SPH0645LM4H. My question is, how can I modify the existing example?

I made some changes, first I comment on the codec part of the code.

//audio_board_handle_t board_handle = audio_board_init();
//audio_hal_ctrl_codec(board_handle->audio_hal, AUDIO_HAL_CODEC_MODE_ENCODE, AUDIO_HAL_CTRL_START);

Second I change the i2s configurations

i2s_stream_cfg_t i2s_cfg = I2S_STREAM_CFG_DEFAULT();

i2s_cfg.type = AUDIO_STREAM_READER;
//i2s_cfg_reader.out_rb_size = 16 * 1024;
i2s_cfg.i2s_config.mode = I2S_MODE_MASTER | I2S_MODE_RX | I2S_PDM_DSR_16S;
i2s_cfg.i2s_config.sample_rate = 16000;
i2s_cfg.i2s_config.bits_per_sample = I2S_BITS_PER_SAMPLE_16BIT;
i2s_cfg.i2s_config.channel_format = I2S_CHANNEL_FMT_ONLY_RIGHT;
i2s_cfg.i2s_config.communication_format = I2S_COMM_FORMAT_STAND_MSB;
i2s_cfg.i2s_config.use_apll = false;
i2s_cfg.out_rb_size = 16 * 1024; // Increase buffer to avoid missing data in bad network conditions
i2s_cfg.i2s_config.dma_buf_count = 8,
i2s_cfg.i2s_config.dma_buf_len = 200,
i2s_cfg.i2s_port = I2S_NUM_0;
i2s_cfg.i2s_config.fixed_mclk = 768000;
i2s_stream_reader = i2s_stream_init(&i2s_cfg);
Third I select the AUDIO HAL as krovo-board 2 because it also have the same esp32-s3 chip therefore i checked the pin configuration of krovo-board 2 and found the following code

esp_err_t get_i2s_pins(i2s_port_t port, i2s_pin_config_t *i2s_config)
{
AUDIO_NULL_CHECK(TAG, i2s_config, return ESP_FAIL);
if (port == I2S_NUM_0) {
i2s_config->bck_io_num = GPIO_NUM_9;
i2s_config->ws_io_num = GPIO_NUM_45;
i2s_config->data_out_num = GPIO_NUM_8;
i2s_config->data_in_num = GPIO_NUM_10;
i2s_config->mck_io_num = GPIO_NUM_16;
} else if (port == I2S_NUM_1) {
i2s_config->bck_io_num = -1;
i2s_config->ws_io_num = -1;
i2s_config->data_out_num = -1;
i2s_config->data_in_num = -1;
i2s_config->mck_io_num = -1;
} else {
memset(i2s_config, -1, sizeof(i2s_pin_config_t));
ESP_LOGE(TAG, "i2s port %d is not supported", port);
return ESP_FAIL;
}
Therefore, I connect the GPIO_NUM_9 with BCLK, GPIO_NUM_45 with LRCLK, and the data pin with GPIO_NUM_10.

The code compiles properly with no errors but is unable to send the audio to the server. The data it sends to the server is blank so can anybody help me out with this issue?