Posts made by about_li

我对I2S和ES7210做了驱动开发，但是麦克风的声音老是获取有问题
i2s_chan_handle_t es7210_i2s_init(void)
{
ESP_LOGI(TAG, "Initializing I2S");

i2s_chan_config_t chan_cfg = {
    .id = I2S_NUM_0,
    .role = I2S_ROLE_MASTER,
    .dma_desc_num = 8,        // 增加 DMA 描述符数量
    .dma_frame_num = 64,      // 增加每个描述符的帧数
    .auto_clear = false,      // 不自动清除 DMA buffer
};

ESP_ERROR_CHECK(i2s_new_channel(&chan_cfg, NULL, &i2s_rx_chan));

i2s_std_config_t std_cfg = {
    .clk_cfg = {
        .sample_rate_hz = SAMPLE_RATE,
        .clk_src = I2S_CLK_SRC_PLL_160M,  // 明确指定时钟源
        .mclk_multiple = I2S_MCLK_MULTIPLE_512,  // 提高MCLK倍数以适应48kHz
    },
    .slot_cfg = {
        .data_bit_width = I2S_DATA_BIT_WIDTH_16BIT,
        .slot_bit_width = I2S_SLOT_BIT_WIDTH_16BIT,
        .slot_mode = I2S_SLOT_MODE_STEREO,
        .slot_mask = I2S_STD_SLOT_BOTH,
        .ws_width = 16,
        .ws_pol = false,
        .bit_shift = true,
        .left_align = false,
        .big_endian = false,
        .bit_order_lsb = false,
    },
    .gpio_cfg = {
        .mclk = MCLK_PIN,
        .bclk = ADC_BCLK_PIN,
        .ws = ADC_LRCLK_PIN,
        .dout = GPIO_NUM_NC,
        .din = ADC_DATA_PIN,
        .invert_flags = {
            .mclk_inv = false,
            .bclk_inv = false,
            .ws_inv = false,
        },
    },
};

ESP_ERROR_CHECK(i2s_channel_init_std_mode(i2s_rx_chan, &std_cfg));

// 在启用通道之前添加延迟
vTaskDelay(pdMS_TO_TICKS(100));

ESP_ERROR_CHECK(i2s_channel_enable(i2s_rx_chan));

// 等待 I2S 稳定
vTaskDelay(pdMS_TO_TICKS(100));

ESP_LOGI(TAG, "I2S initialized successfully");
return i2s_rx_chan;

}

void es7210_codec_init(void)
{
ESP_LOGI(TAG, "Init I2C used to configure ES7210");
i2c_config_t i2c_conf = {
.mode = I2C_MODE_MASTER,
.sda_io_num = GPIO_NUM_12,
.scl_io_num = GPIO_NUM_11,
.sda_pullup_en = GPIO_PULLUP_ENABLE,
.scl_pullup_en = GPIO_PULLUP_ENABLE,
.master = {
.clk_speed = EXAMPLE_ES7210_I2C_CLK,
},
};
ESP_ERROR_CHECK(i2c_param_config(EXAMPLE_I2C_NUM, &i2c_conf));
ESP_ERROR_CHECK(i2c_driver_install(EXAMPLE_I2C_NUM, i2c_conf.mode, 0, 0, 0));

/* Create ES7210 device handle */
es7210_dev_handle_t es7210_handle = NULL;
es7210_i2c_config_t es7210_i2c_conf = {
    .i2c_port = EXAMPLE_I2C_NUM,
    .i2c_addr = EXAMPLE_ES7210_I2C_ADDR
};
ESP_ERROR_CHECK(es7210_new_codec(&es7210_i2c_conf, &es7210_handle));

ESP_LOGI(TAG, "Configure ES7210 codec parameters");
es7210_codec_config_t codec_conf = {
    .sample_rate_hz = EXAMPLE_I2S_SAMPLE_RATE,
    .mclk_ratio = EXAMPLE_I2S_MCLK_MULTIPLE,
    .i2s_format = EXAMPLE_I2S_TDM_FORMAT,
    .bit_width = (es7210_i2s_bits_t)EXAMPLE_I2S_SAMPLE_BITS,
    .mic_bias = EXAMPLE_ES7210_MIC_BIAS,
    .mic_gain = EXAMPLE_ES7210_MIC_GAIN,
    .flags = {
        .tdm_enable = 1
    },
};
ESP_ERROR_CHECK(es7210_config_codec(es7210_handle, &codec_conf));
ESP_ERROR_CHECK(es7210_config_volume(es7210_handle, EXAMPLE_ES7210_ADC_VOLUME));

}