basic_pdb.cpp

if (batt1On && batt1V < BATT_EMPTY && batt2Installed && !batt2On) {
  ISR_Override = true;
  digitalWrite(BATT_2_CTL, HIGH);
  batt2On = true;
  prevSwitchTime = micros();
  Serial.println("Switched to batt 2!");
  buffer += "Switching to batt 2";
  if (batt2V > BATT_EMPTY) {
    digitalWrite(BATT_1_CTL, LOW);
    batt1On = false;
    prevSwitchTime = micros();
    buzzerTimer.set(BUZZ_INTERVAL_SLOW, 4);
  }
  else {
    buzzerTimer.set(BUZZ_INTERVAL_RAPID, 20);
  }
  ISR_Override = false;
}
if (batt2On && batt2V < BATT_EMPTY && batt1Installed && !batt1On) {
  ISR_Override = true;
  digitalWrite(BATT_1_CTL, HIGH);
  batt1On = true;
  prevSwitchTime = micros();
  Serial.println("Switched to batt 1!");
  buffer += "Switching to batt 1";
  if (batt1V > BATT_EMPTY) {
    digitalWrite(BATT_2_CTL, LOW);
    batt2On = false;
    prevSwitchTime = micros();
    buzzerTimer.set(BUZZ_INTERVAL_SLOW, 4);
  }
  else {
    buzzerTimer.set(BUZZ_INTERVAL_RAPID, 20);
  }
  ISR_Override = false;
}