Attiny1614: Is there a quick way of resetting ADC0

[6v6gt-duino]

I found this voltage measuring code and, after use, analogRead() returns weird values so I'd like to reset the ADC back to its original state without too much effort. As a work-around in this specific case I can use ADC1 which the Attiny1614 provides instead.

uint16_t batteryMonitorORIG(void) {
  // from https://www.avrfreaks.net/forum/measure-supply-voltage-attiny1614
  // returns volts/1000 e.g. 3157 = 3.157 volts
  // adc0 VREF = 1v1
  VREF.CTRLA = (VREF.CTRLA & ~VREF_ADC0REFSEL_gm) | VREF_ADC0REFSEL_1V1_gc;
  ADC0.CTRLB = ADC_SAMPNUM_ACC64_gc; //64 samples
  ADC0.CTRLC = ADC_REFSEL_VDDREF_gc | ADC_PRESC_DIV16_gc | ADC_SAMPCAP_bm;
  ADC0.CTRLD = ADC_INITDLY_DLY64_gc;
  ADC0.MUXPOS = ADC_MUXPOS_INTREF_gc;
  ADC0.CTRLA = 1; //enable adc
  ADC0.COMMAND = 1; //start
  while ( ADC0.COMMAND ) {} //wait
  //Vdd*100 = 1023*1.1*100*64/res (64 samples, so *64 also)

  return (1023 * 1.1 * 1000ul * 64) / ADC0.RES;
}

and modified for ADC1

uint16_t batteryMonitor(void) {
  // from https://www.avrfreaks.net/forum/measure-supply-voltage-attiny1614 
  // modified to use ADC1
  // returns volts/1000 e.g. 3157 = 3.157 volts
  // adc1 VREF = 1v1
  //VREF.CTRLA = (VREF.CTRLA & ~VREF_ADC0REFSEL_gm) | VREF_ADC0REFSEL_1V1_gc; // not symmetric for ADC1
  VREF.CTRLC = (VREF.CTRLC & ~VREF_ADC1REFSEL_gm) | VREF_ADC1REFSEL_1V1_gc;  // not symmetric
  ADC1.CTRLB = ADC_SAMPNUM_ACC64_gc; //64 samples
  ADC1.CTRLC = ADC_REFSEL_VDDREF_gc | ADC_PRESC_DIV16_gc | ADC_SAMPCAP_bm;
  ADC1.CTRLD = ADC_INITDLY_DLY64_gc;
  ADC1.MUXPOS = ADC_MUXPOS_INTREF_gc;
  ADC1.CTRLA = 1; //enable adc
  ADC1.COMMAND = 1; //start
  while ( ADC1.COMMAND ) {} //wait
  //Vdd*100 = 1023*1.1*100*64/res (64 samples, so *64 also)

  return (1023 * 1.1 * 1000ul * 64) / ADC1.RES;
}

[SpenceKonde]

init_ADC0() will call the routine that initializes the ADC which should resolve it.