// Define the ADC pin to use on the ESP32-C3
// Use any ADC-enabled pin, for example, GPIO1
const int in1 = 0;
const int in2 = 1;
const int in3 = 4;

void setup() {
  // Initialize Serial communication
  Serial.begin(115200);

  // You do not need to set the attenuation with this function
  // It handles the configuration internally to get a calibrated reading
}

void loop() {
  // Read the analog value and get the calibrated voltage in millivolts
  uint32_t millivolts = analogReadMilliVolts(in1);

  // Print the voltage to the Serial Monitor
  Serial.print("Voltage: ");
  Serial.print(millivolts);
  Serial.print(" mV\t");

  millivolts = analogReadMilliVolts(in2);
  Serial.print("Voltage: ");
  Serial.print(millivolts);
  Serial.print(" mV\t");

  millivolts = analogReadMilliVolts(in3);
  Serial.print("Voltage: ");
  Serial.print(millivolts);
  Serial.println(" mV");

  // Wait a moment before the next reading
  delay(1000);
}