Added standby mode method

Author: agdl

examples/SleepRTCAlarm/SleepRTCAlarm.ino

@@ -0,0 +1,64 @@
+/*
+  Simple RTC Alarm for Arduino Zero
+
+  Demonstrates the use an alarm to wake up an Arduino zero from Standby mode
+
+  This example code is in the public domain
+
+  http://arduino.cc/en/Tutorial/SleepRTCAlarm
+
+  created by Arturo Guadalupi
+  17 Nov 2015
+*/
+
+#include <RTCZero.h>
+
+/* Create an rtc object */
+RTCZero rtc;
+
+/* Change these values to set the current initial time */
+const uint8_t seconds = 0;
+const uint8_t minutes = 00;
+const uint8_t hours = 17;
+
+/* Change these values to set the current initial date */
+const uint8_t day = 17;
+const uint8_t month = 11;
+const uint8_t year = 15;
+
+void setup()
+{
+  Serial.begin(115200);
+
+  rtc.begin();
+
+  rtc.setTime(hours, minutes, seconds);
+  rtc.setDate(day, month, year);
+
+  rtc.setAlarmTime(17, 00, 10);
+  rtc.enableAlarm(rtc.MATCH_HHMMSS);
+
+  rtc.attachInterrupt(alarmMatch);
+
+  rtc.standbyMode();
+}
+
+void loop()
+{
+
+  Serial.println("Awake!");
+
+  for (int i = 0; i < 10; i++)
+    Serial.print(i);
+
+  Serial.println();
+
+  Serial.println("Done! Goodnight!");
+
+  rtc.standbyMode();    // Sleep until next alarm match
+}
+
+void alarmMatch()
+{
+
+}

keywords.txt

@@ -47,6 +47,8 @@ setAlarmTime		KEYWORD2
 enableAlarm 		KEYWORD2
 disableAlarm 		KEYWORD2
 
+standbyMode			KEYWORD2
+
 #######################################
 # Constants (LITERAL1)
 #######################################

library.properties

@@ -1,5 +1,5 @@
 name=RTCZero
-version=1.2.0
+version=1.3.0
 author=Arduino
 maintainer=Arduino <[email protected]>
 sentence=Allows to use the RTC functionalities. For Arduino Zero only.

src/RTCZero.cpp

@@ -100,6 +100,12 @@ void RTCZero::detachInterrupt()
   RTC_callBack = NULL;
 }
 
+void RTCZero::standbyMode()
+{
+	SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk;
+  __WFI();
+}
+
 /*
  * Get Functions
  */

src/RTCZero.h

@@ -49,6 +49,8 @@ class RTCZero {
   void attachInterrupt(voidFuncPtr callback);
   void detachInterrupt();
 
+  void standbyMode();
+  
   /* Get Functions */
 
   uint8_t getSeconds();