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我通过SCS工具ADC采集电压，实际电压为2.5V，但采集到的却是2.35V，明显偏低，是否有方式可以校准呢？
Sensor control studio中，用的是如下函数，用的是自制硬件
adcSelectGpioInput(AUXIO_A_ADC_4);
adcEnableSync(ADC_REF_FIXED, ADC_SAMPLE_TIME_2P7_US, ADC_TRIGGER_MANUAL);
adcGenManualTrigger();
adcReadFifo(output.adcVal4);
