Add led properties to Buttons

Author: sebromero

examples/buttons.py

@@ -9,6 +9,7 @@
 """
 
 from modulino import ModulinoButtons
+from time import sleep
 
 buttons = ModulinoButtons()
 
@@ -24,6 +25,13 @@
 buttons.on_button_c_long_press = lambda : print("Button C long press")
 buttons.on_button_c_release = lambda : print("Button C released")
 
+buttons.led_a.on()
+sleep(0.5)
+buttons.led_b.on()
+sleep(0.5)
+buttons.led_c.on()
+sleep(0.5)
+buttons.set_led_status(False, False, False) # Turn off all LEDs
 
 while True:
     buttons_state_changed = buttons.update()

src/modulino/buttons.py

@@ -2,6 +2,26 @@
 from time import ticks_ms
 from micropython import const
 
+class ModulinoButtonsLED():
+  def __init__(self, buttons):
+    self._value = 0
+    self._buttons = buttons
+
+  def on(self):
+    self.value = 1
+
+  def off(self):
+    self.value = 0
+
+  @property
+  def value(self):
+    return self._value
+  
+  @value.setter
+  def value(self, value):
+    self._value = value
+    self._buttons._update_leds()
+
 class ModulinoButtons(Modulino):
   """
   Class to interact with the buttons of the Modulino Buttons.
@@ -35,7 +55,37 @@ def __init__(self, i2c_bus = None, address = None):
     self._on_button_a_long_press = None
     self._on_button_b_long_press = None
     self._on_button_c_long_press = None
+
+    # LEDs
+    self._led_a = ModulinoButtonsLED(self)
+    self._led_b = ModulinoButtonsLED(self)
+    self._led_c = ModulinoButtonsLED(self)
+  
+  @property
+  def led_a(self) -> ModulinoButtonsLED:
+    """ Returns the LED A object of the module. """
+    return self._led_a
+  
+  @property
+  def led_b(self) -> ModulinoButtonsLED:
+    """ Returns the LED B object of the module. """
+    return self._led_b
 
+  @property
+  def led_c(self) -> ModulinoButtonsLED:
+    """ Returns the LED C object of the module. """
+    return self._led_c
+
+  def _update_leds(self):
+    """
+    Update the physical status of the button LEDs by writing the current values to the module.
+    """
+    data = bytearray(3)
+    data[0] = self._led_a.value
+    data[1] = self._led_b.value
+    data[2] = self._led_c.value
+    self.write(data)
+
   def set_led_status(self, a: bool, b: bool, c: bool) -> None:
     """
     Turn on or off the button LEDs according to the given status.
@@ -45,11 +95,10 @@ def set_led_status(self, a: bool, b: bool, c: bool) -> None:
         b (bool): The status of the LED B.
         c (bool): The status of the LED C.
     """
-    data = bytearray(3)
-    data[0] = 1 if a else 0
-    data[1] = 1 if b else 0
-    data[2] = 1 if c else 0
-    self.write(data)
+    self._led_a._value = 1 if a else 0
+    self._led_b._value = 1 if b else 0
+    self._led_c._value = 1 if c else 0
+    self._update_leds()
 
   @property
   def long_press_duration(self) -> int: