Make alarm sleep.

src/alarm.py

@@ -1,8 +1,9 @@
 import time 
-from machine import Pin
+from machine import Pin, Timer
 import buzzer
 from display import Display
 import constants
+import parameters
 
 
 SATURATED_MESSAGE = """Filtro saturado."""
@@ -10,21 +11,28 @@ HOLE_MESSAGE = """Filtro ou linha \nfurado."""
 
 class Alarm:
     reset_btnn = Pin(constants.RESET_BUTTON_PIN, mode=Pin.IN)
+    led = Pin(constants.ALARM_LED_PIN, mode=Pin.OUT) 
+    interrupt_timer = None
+
     @staticmethod
     def trigger_saturated_alarm():
         Display.print(SATURATED_MESSAGE)
-        buzzer.sing_alarm()
-        while Alarm.reset_button_not_pressed():
-            time.sleep(0.05)
-        Alarm.stop_alarm()
+        Alarm.blink_led_and_wait_for_reset()
     
     @staticmethod
     def trigger_hole_alarm():
         Display.print(HOLE_MESSAGE)
+        Alarm.blink_led_and_wait_for_reset()
+
+    @staticmethod
+    def blink_led_and_wait_for_reset():
         buzzer.sing_alarm()
+        Alarm.led.on()
         while Alarm.reset_button_not_pressed():
             time.sleep(0.05)
         Alarm.stop_alarm()
+        Alarm.led.off()
+        Alarm.sleep_alarm()
 
     @staticmethod
     def stop_alarm():
@@ -35,3 +43,17 @@ class Alarm:
     def reset_button_not_pressed():
         was_not_pressed = Alarm.reset_btnn.value() < 1
         return was_not_pressed
+
+    @staticmethod
+    def sleep_alarm():
+        interrupt_timer = Timer(
+            period=int(parameters.ALARM_PAUSE_PERIOD * 1e3), 
+            mode=Timer.ONE_SHOT, 
+            callback=Alarm.__wake_up_alarm
+        )
+        Alarm.interrupt_timer = interrupt_timer
+    
+    @staticmethod
+    def __wake_up_alarm(*args, **kargs):
+        Alarm.interrupt_timer.deinit()
+        Alarm.blink_led_and_wait_for_reset()

src/parameters.py

@@ -15,3 +15,6 @@ ANNOYING_BUZZER_ENABLED = False
 
 """How many samples of pressure should be used in smoother."""
 PRESSURE_SMOOTH_LENGTH = 25
+
+"""Period in seconds to wait when alarm reset button is presset until it starts again."""
+ALARM_PAUSE_PERIOD = 5