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1 | /*********************************************************************************************************************************************************************************
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2 | * This sketch demonstrates how configure alarm in polled mode.
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3 | In this mode you hav to check continuously ALARM0 flag in the main program code.
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4 | *********************************************************************************************************************************************************************************/
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5 |
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6 |
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7 | #include <RTCInt.h>
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8 |
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9 | RTCInt rtc;
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10 |
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11 | void setup()
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12 | {
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13 | Serial.begin(9600); //serial communication initializing
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14 | pinMode(13,OUTPUT);
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15 | rtc.begin(TIME_H24); //RTC initializing with 24 hour representation mode
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16 | rtc.setTime(17,0,5,0); //setting time (hour minute and second)
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17 | rtc.setDate(13,8,15); //setting date
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18 | rtc.enableAlarm(SEC,ALARM_POLLED,NULL); //enabling alarm in polled mode and match on second
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19 | rtc.local_time.hour=17;
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20 | rtc.local_time.minute=5;
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21 | rtc.local_time.second=10; //setting second to match
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22 | rtc.setAlarm(); //write second in alarm register
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23 | }
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24 |
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25 | void loop()
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26 | {
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27 |
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28 | digitalWrite(13,HIGH);
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29 | delay(100);
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30 | digitalWrite(13,LOW);
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31 | delay(400);
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32 |
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33 | if(rtc.alarmMatch()) //when match occurs led on pin 13 blinks ten times
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34 | {
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35 | Serial.println("Alarm match!");
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36 | for(int i=0; i < 10; i++)
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37 | {
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38 | digitalWrite(13,HIGH);
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39 | delay(200);
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40 | digitalWrite(13,LOW);
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41 | delay(800);
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42 | }
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43 | RTC->MODE2.INTFLAG.bit.ALARM0=1; //clearing alarm0 flag
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44 | }
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45 |
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46 | }
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