print msg on console when reaching alarm time

vibrating_alarm_m5stickc.py

@@ -18,7 +18,7 @@ _SCREEN_WIDTH, _SCREEN_HEIGHT = lcd.winsize()
 
 
 class App:
-    # pylint: disable=too-few-public-methods
+    # pylint: disable=too-few-public-methods,too-many-instance-attributes
     def __init__(self) -> None:
         self._rtc = None
         self._clock_text_box = None
@@ -27,6 +27,7 @@ class App:
         self._alarm_minute = None
         self._alarm_hour_text_box = None
         self._alarm_minute_text_box = None
+        self._alarm_timer = None
 
     def _load_alarm_time(self) -> None:
         with open(_ALARM_TIME_PATH, "r") as alarm_time_file:
@@ -59,6 +60,27 @@ class App:
         # https://docs.micropython.org/en/latest/library/micropython.html#micropython.schedule
         micropython.schedule(self._update_menu, None)
 
+    @staticmethod
+    def _alert() -> None:
+        print("ALARM")
+
+    def _alarm(self, timer: machine.Timer) -> None:
+        # pylint: disable=unused-argument; callback
+        micropython.schedule(lambda n: self._alert(), None)
+        micropython.schedule(lambda n: self._configure_alarm_timer(), None)
+
+    def _configure_alarm_timer(self) -> None:
+        now_hour, now_minute = self._rtc.datetime()[4:6]  # type: ignore
+        minutes_until_alarm = (
+            (self._alarm_hour - now_hour) * 60 + self._alarm_minute - now_minute - 1
+        ) % (24 * 60) + 1
+        print("alarm in ", minutes_until_alarm, " min")
+        self._alarm_timer.init(  # type: ignore
+            period=minutes_until_alarm * 60 * 1000,  # ms
+            mode=machine.Timer.ONE_SHOT,
+            callback=self._alarm,
+        )
+
     def _update_alarm_time(self, event_arg: None) -> None:
         # pylint: disable=unused-argument; callback
         self._alarm_hour_text_box.setText(  # type: ignore
@@ -68,6 +90,7 @@ class App:
             "{:02d}".format(self._alarm_minute)  # type: ignore
         )
         self._save_alarm_time()
+        self._configure_alarm_timer()
 
     def _button_b_pressed(self) -> None:
         if self._menu_position == 1:
@@ -130,6 +153,9 @@ class App:
             _DEFAULT_FONT_COLOR,
             rotate=90,
         )
+        # machine.Timer(1).init(...) breaks button handling
+        self._alarm_timer = machine.Timer(2)
+        self._configure_alarm_timer()
 
     def run(self) -> None:
         m5ui.setScreenColor(0x000000)  # clear screen