adc_continuous_handle_t c_handle = nullptr;
    const adc_continuous_handle_cfg_t c_cfg = {
        .max_store_buf_size = I2S_DMA_BUF_LEN*4,
        .conv_frame_size = I2S_DMA_BUF_LEN,
    };
    adc_continuous_new_handle(&c_cfg, &c_handle);
    adc_continuous_config_t dig_cfg = {
        .pattern_num = 6,
        .sample_freq_hz = 6 * 1000 * 200, // 100 samples per solenoid per ms
        .conv_mode = ADC_CONV_SINGLE_UNIT_1,
        .format = ADC_DIGI_OUTPUT_FORMAT_TYPE1,
    };
    adc_digi_pattern_config_t adc_pattern[SOC_ADC_PATT_LEN_MAX] = {0};
    for (int i = 0; i < 6; i++) {
        adc_pattern[i].atten = ADC_ATTEN_DB_11;
        adc_pattern[i].channel = sample_channels[i] & 0x7;
        adc_pattern[i].unit = ADC_UNIT_1;
        adc_pattern[i].bit_width = SOC_ADC_DIGI_MAX_BITWIDTH; // 12bits
    }
    dig_cfg.adc_pattern = adc_pattern;
    adc_continuous_config(c_handle, &dig_cfg);
    adc_continuous_start(c_handle);

    esp_err_t ret;


    uint32_t samples[adc_channel_t::ADC_CHANNEL_9]; // Indexes all ADC channels like this
    uint32_t now = GET_CLOCK_TIME();
    while(true) {
        ret = adc_continuous_read(c_handle, adc_read_buf, I2S_DMA_BUF_LEN, &out_len, portMAX_DELAY);
        if (ret == ESP_OK) {
            for (int i = 0; i < out_len; i += SOC_ADC_DIGI_RESULT_BYTES) {
                adc_digi_output_data_t *p = (adc_digi_output_data_t*)&adc_read_buf[i];
                samples[p->type1.channel]++;
            }
            first_read_complete = true;
            if (GET_CLOCK_TIME() - now > 1000) {
                now = GET_CLOCK_TIME();
                uint64_t total = 0;
                for (int i = 0; i < (uint8_t)adc_channel_t::ADC_CHANNEL_9; i++) {
                    printf("Channel %d - %lu\n", i, samples[i]);
                    total += samples[i];
                    samples[i] = 0;
                    
                }
                printf("--TOTAL %llu --\n", total);
            }  
        }
    }