getAlarm()

This will return which alarms have been raised. There are 4 possible return values:

Value	Meaning
0	No alarms have been raised
1	Low temperature alarm raised
2	High temperature alarm raised
3	Both low and high temperature alarms raised

The alarm condition remains set until it no longer applies.

Example:

DS1631_Class DS1631; // Create an instance of the DS1631
...
void setup() {
  Serial.begin(SERIAL_SPEED);
  while (!DS1631.begin()) { // Initialize I2C communications
    Serial.println("Unable to find DS1631. Checking again in 3 seconds.");
    delay(3000);
  } // of loop until device is located
  Serial.print("Detected ");
  Serial.print(DS1631.thermometers);
  Serial.println(" DS1631 devices.");
  ...
  for (uint8_t i=0;i<DS1631.thermometers;i++) {
    DS1631.setAlarmTemperature(i,0,DS1631.readTemp(i)-32); // low alarm to ambient minus 2°C
    DS1631.setAlarmTemperature(i,0,DS1631.readTemp(i)+32); // high alarm to ambient plus 2°C
  } // of for-next each thermometer loop
} // of setup
...
void loop() {
  for (uint8_t i=0;i<DS1631.thermometers;i++) {
    uint8_t alarmCode = DS1631.getAlarm(i);
    if (alarmCode) {
      Serial.print("F("Alarm for thermometer ");
      Serial.print(i);
      Serial.print(F(" "));
      if (alarmCode&1) Serial.print(F("(low)"));
      if (alarmCode&2) Serial.print(F("(high)"));
      Serial.print(F(" raised."));
      Serial.println();
    }  // of if-then an alarm has been raised
  } // of for-next each thermometer loop
} // of main program