ESP32-S3使用DMA访问ADC提示ADC bitwidth not supported的原因？

今天在使用ESP32-S3的ADC时，需要高速ADC采样，参考example中的持续采样代码设定了ADC，调用adc_digi_controller_configure(&digi_cfg)提示ADC bitwidth not supported。

调用部分代码如下：

[Codebox]

void ESP32ADC::setHighSpeedADC()

{

    // adc_digi初始化

   

    // controller初始化

    adc_digi_init_config_t adc_dma_config = {

        .max_store_buf_size = 1024,

        .conv_num_each_intr = 256,

        .adc1_chan_mask = 0,

        .adc2_chan_mask = 0

    };

    uint32_t freq = US_PER_S / _period_us;

    serialLog.log(ESP32LogLevel::Info,"freq:%d",freq);

    adc_digi_pattern_config_t adc_pattern[SOC_ADC_PATT_LEN_MAX] = {0};

    uint8_t channel1 = ADC_CHANNEL_3;

    uint8_t channel2 = ADC_CHANNEL_4;

    adc_dma_config.adc1_chan_mask |= BIT(channel1);

    uint8_t activeEADC = getActiveEADCChannel() == ECG_ADC_CHANNEL ? ADC_CHANNEL_3 : ADC_CHANNEL_5;

    adc_dma_config.adc1_chan_mask |= BIT(channel2);

    adc_pattern[0] = {

        .atten = ADC_ATTEN_DB_11,

        .channel  = channel1,

        .unit = ADC_UNIT_1,

        .bit_width  = ADC_WIDTH_12Bit

    };

    adc_pattern[1] = {

        .atten = ADC_ATTEN_DB_11,

        .channel = channel2,

        .unit = ADC_UNIT_1,

        .bit_width = ADC_WIDTH_12Bit

    };

    adc_digi_configuration_t digi_cfg = {

        .conv_limit_en = false,

        .conv_limit_num = 512,

        .pattern_num = 2,

        .sample_freq_hz = freq,     //换算成采样频率

        .conv_mode = ADC_CONV_SINGLE_UNIT_1,    // 只使用ADC1

        .format = ADC_DIGI_OUTPUT_FORMAT_TYPE2

    };

    digi_cfg.adc_pattern = adc_pattern;

    ESP_ERROR_CHECK(adc_digi_initialize(&adc_dma_config));

    ESP_ERROR_CHECK(adc_digi_controller_configure(&digi_cfg));

}

[/Codebox]



请问，以上使用方法是否有问题？

详细是错误输出为：

E (37732) ADC: adc_digi_controller_configure(571): ADC bitwidth not supported

ESP_ERROR_CHECK failed: esp_err_t 0x102 (ESP_ERR_INVALID_ARG) at 0x4037d7f8

file: "src/ESP32ADC.cpp" line 108

func: void ESP32ADC::setHighSpeedADC()

expression: adc_digi_controller_configure(&digi_cfg)



abort() was called at PC 0x4037d7fb on core 0





Backtrace:0x4037768e:0x3fcb6c300x4037d805:0x3fcb6c50 0x40382f0d:0x3fcb6c70 0x4037d7fb:0x3fcb6cf0 0x42005af4:0x3fcb6d10 0x42005fcf:0x3fcb6dc0 0x4200330b:0x3fcb6de0 0x42003c11:0x3fcb6e00 0x42005331:0x3fcb6e60 0x42005340:0x3fcb6e90