Differences

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--- en-us_commands:reference:irtcsetalarm2 [2026/09/07 21:52] – 만듦 - 바깥 편집 127.0.0.1
+++ en-us_commands:reference:irtcsetalarm2 [2026/09/08 00:53] (current) – 바깥 편집 127.0.0.1
@@ Line 17: / Line 17: @@
 <code cpp>
 void setup() {
-  if (!IrtcBegin()) return;
+  Serial.begin(115200);
+  if (!IrtcBegin()) return;  // Check the DS3231 RTC connection and begin operation.
-  // Trigger alarm 2 every day at 08:30:00.
+  IrtcSetAlarm1(IRTC_ALARM1_MATCH_HOUR_MINUTE_SECOND, 1, 8, 30, 0);  // Set alarm 1, including seconds.
-  IrtcSetAlarm2(IRTC_ALARM2_MATCH_HOUR_MINUTE, 1, 8, 30);
+  IrtcSetAlarm2(IRTC_ALARM2_MATCH_HOUR_MINUTE, 1, 17, 30);  // Set alarm 2 with minute resolution.
-  IrtcAlarmEnable(2, true);
+  IrtcAlarmEnable(1, true);  // Enable or disable the specified alarm.
+  IrtcAlarmEnable(2, true);  // Enable or disable the specified alarm.
 }
 void loop() {
+  bool alarm1Enabled = false;
+  bool alarm1Triggered = false;
+  IrtcAlarmEnabled(1, alarm1Enabled);  // Check whether the specified alarm is enabled.
+  if (alarm1Enabled && IrtcAlarmTriggered(1, alarm1Triggered, true) && alarm1Triggered) {  // Check whether an alarm has triggered and optionally clear its status.
+    Serial.println(F("alarm 1"));
+  }
+  delay(50);
 }
 </code>
@@ Line 31: / Line 39: @@
 Run each device's corresponding ''Begin'' command first. Check I²C addresses and pin sharing; if the ''bool'' return value is ''false'', inspect wiring and power.
+===== Built-in Commands in the Same Category =====
+  * [[:en-us_commands:reference:irtcbegin|IrtcBegin() View detailed description]]
+  * [[:en-us_commands:reference:irtcread|IrtcRead() View detailed description]]
+  * [[:en-us_commands:reference:irtcset|IrtcSet() View detailed description]]
+  * [[:en-us_commands:reference:irtcunixtime|IrtcUnixTime() View detailed description]]
+  * [[:en-us_commands:reference:irtcgettemperature|IrtcGetTemperature() View detailed description]]
+  * [[:en-us_commands:reference:irtctimevalid|IrtcTimeValid() View detailed description]]
+  * [[:en-us_commands:reference:irtcclearoscillatorstopflag|IrtcClearOscillatorStopFlag() View detailed description]]
+  * [[:en-us_commands:reference:irtcsetalarm1|IrtcSetAlarm1() View detailed description]]
+  * [[:en-us_commands:reference:irtcalarmenable|IrtcAlarmEnable() View detailed description]]
+  * [[:en-us_commands:reference:irtcalarmenabled|IrtcAlarmEnabled() View detailed description]]
+  * [[:en-us_commands:reference:irtcalarmtriggered|IrtcAlarmTriggered() View detailed description]]
+  * [[:en-us_commands:reference:irtcsquarewave|IrtcSquareWave() View detailed description]]
+  * [[:en-us_commands:reference:irtc32khz|Irtc32kHz() View detailed description]]
 [[:en-us_commands:builtin|← Built-in Command List]]