Hello, please show your whole codes about adc init and read , you can send your code to my email: jzlv@bouffalolab.com,thank you!

I have sent you an email, but for reference for anyone else following along, this is the code that was sent.

///////////// This is the setup code

const ADC_Chan_Type adc_tip_pos_chans[] = {ADC_CHAN8, ADC_CHAN9,  ADC_CHAN9,
                                           ADC_CHAN9, ADC_CHAN9,  ADC_CHAN10,
                                           ADC_CHAN8, ADC_CHAN10, ADC_CHAN8};
const ADC_Chan_Type adc_tip_neg_chans[] = {
    ADC_CHAN_GND, ADC_CHAN_GND, ADC_CHAN_GND, ADC_CHAN_GND, ADC_CHAN_GND,
    ADC_CHAN_GND, ADC_CHAN_GND, ADC_CHAN_GND, ADC_CHAN_GND};
static_assert(sizeof(adc_tip_pos_chans) == sizeof(adc_tip_neg_chans));

void setup_adc(void) {
  //
  ADC_CFG_Type adc_cfg = {};
  ADC_FIFO_Cfg_Type adc_fifo_cfg = {};

  CPU_Interrupt_Disable(GPADC_DMA_IRQn);

  ADC_IntMask(ADC_INT_ALL, MASK);

  adc_cfg.clkDiv = ADC_CLK_DIV_4;
  adc_cfg.vref = ADC_VREF_3P2V;
  adc_cfg.resWidth = ADC_DATA_WIDTH_16_WITH_128_AVERAGE;
  adc_cfg.inputMode = ADC_INPUT_SINGLE_END;
  adc_cfg.v18Sel = ADC_V18_SEL_1P72V;
  adc_cfg.v11Sel = ADC_V11_SEL_1P1V;
  adc_cfg.gain1 = ADC_PGA_GAIN_NONE;
  adc_cfg.gain2 = ADC_PGA_GAIN_NONE;
  adc_cfg.chopMode = ADC_CHOP_MOD_ALL_OFF;
  adc_cfg.biasSel = ADC_BIAS_SEL_MAIN_BANDGAP;
  adc_cfg.vcm = ADC_PGA_VCM_1P6V;
  adc_cfg.offsetCalibEn = ENABLE;
  adc_cfg.offsetCalibVal = 0;

  ADC_Disable();
  ADC_Enable();
  ADC_Reset();

  ADC_Init(&adc_cfg);
  adc_fifo_cfg.dmaEn = DISABLE;
  adc_fifo_cfg.fifoThreshold = ADC_FIFO_THRESHOLD_4;
  ADC_FIFO_Cfg(&adc_fifo_cfg);
  ADC_MIC_Bias_Disable();
  ADC_Tsen_Disable();

  // Enable FiFo IRQ
  Interrupt_Handler_Register(GPADC_DMA_IRQn, adc_fifo_irq);
  ADC_IntMask(ADC_INT_FIFO_READY, UNMASK);
  CPU_Interrupt_Enable(GPADC_DMA_IRQn);
  ADC_Stop();
  ADC_FIFO_Clear();
  ADC_Scan_Channel_Config(adc_tip_pos_chans, adc_tip_neg_chans,
                          sizeof(adc_tip_pos_chans) / sizeof(ADC_Chan_Type),
                          DISABLE);
}

void adc_fifo_irq(void) {

  if (ADC_GetIntStatus(ADC_INT_FIFO_READY) == SET) {
    // Read out all entries in the fifo
    while (ADC_Get_FIFO_Count()) {
      volatile uint32_t reading = ADC_Read_FIFO();
      // As per manual, 26 bit reading; lowest 16 are the ADC
      uint16_t sample = reading & 0xFFFF;
      uint8_t source = (reading >> 21) & 0b11111;
      switch (source) {
      case ADC_CHAN10:
        printf("ADC ADC_CHAN10 %d\n", (int)sample);
        break;
      case ADC_CHAN9:
        printf("ADC ADC_CHAN9 %d\n", (int)sample);
        break;
      case ADC_CHAN8:
        printf("ADC ADC_CHAN8 %d\n", (int)sample);
        break;

      default:
        break;
      }
    }
  }
  // Clear IRQ
  ADC_IntClr(ADC_INT_ALL);
}