Updating some comments and adding usage stubs

adafruit_monsterm4sk.py

@@ -42,10 +42,13 @@
 __version__ = "0.0.0-auto.0"
 __repo__ = "https://github.com/adafruit/Adafruit_CircuitPython_MonsterM4sk.git"
 
-SS_LIGHTSENSOR_PIN = 2
+# Seesaw pin numbers
+SS_LIGHTSENSOR_PIN = 2  # "through-hole" light sensor near left eye
 SS_VCCSENSOR_PIN = 3
-SS_BACKLIGHT_PIN = 5
-SS_TFTRESET_PIN = 8
+SS_BACKLIGHT_PIN = 5  # left screen backlight
+SS_TFTRESET_PIN = 8  # left screen reset
+
+# buttons above left eye. Match silkscreen :)
 SS_SWITCH1_PIN = 9
 SS_SWITCH2_PIN = 10
 SS_SWITCH3_PIN = 11
@@ -60,19 +63,28 @@ class MonsterM4sk:
            """
 
     def __init__(self, i2c=None):
+        """
+            :param i2c: The I2C bus to use, will try board.I2C()
+                if not supplied
+
+        """
         displayio.release_displays()
 
         if i2c is None:
             i2c = board.I2C()
 
         # set up on-board seesaw
         self._ss = Seesaw(i2c)
-        # left screen
-        self._ss.pin_mode(SS_TFTRESET_PIN, self._ss.OUTPUT)
+
+        # set up seesaw pins
+        self._ss.pin_mode(SS_TFTRESET_PIN, self._ss.OUTPUT)  # left sceen reset
+
+        # buttons abolve left eye
         self._ss.pin_mode(SS_SWITCH1_PIN, self._ss.INPUT_PULLUP)
         self._ss.pin_mode(SS_SWITCH2_PIN, self._ss.INPUT_PULLUP)
         self._ss.pin_mode(SS_SWITCH3_PIN, self._ss.INPUT_PULLUP)
 
+        # light sensor near left eye
         self._ss.pin_mode(SS_LIGHTSENSOR_PIN, self._ss.INPUT)
 
         # Manual reset for left screen
@@ -92,17 +104,19 @@ def __init__(self, i2c=None):
         left_tft_dc = board.LEFT_TFT_DC
 
         left_display_bus = displayio.FourWire(
-            left_spi, command=left_tft_dc, chip_select=left_tft_cs
+            left_spi, command=left_tft_dc, chip_select=left_tft_cs  # Reset on Seesaw
         )
 
         self.left_display = ST7789(left_display_bus, width=240, height=240, rowstart=80)
 
+        # right backlight on board
         self.right_backlight = pulseio.PWMOut(
             board.RIGHT_TFT_LITE, frequency=5000, duty_cycle=0
         )
+        # full brightness
         self.right_backlight.duty_cycle = 65535
 
-        # right display
+        # right display spi bus
         right_spi = busio.SPI(board.RIGHT_TFT_SCK, MOSI=board.RIGHT_TFT_MOSI)
         right_tft_cs = board.RIGHT_TFT_CS
         right_tft_dc = board.RIGHT_TFT_DC
@@ -111,13 +125,14 @@ def __init__(self, i2c=None):
             right_spi,
             command=right_tft_dc,
             chip_select=right_tft_cs,
-            reset=board.RIGHT_TFT_RST,
+            reset=board.RIGHT_TFT_RST,  # reset on board
         )
 
         self.right_display = ST7789(
             right_display_bus, width=240, height=240, rowstart=80
         )
 
+        # setup accelerometer
         if i2c is not None:
             int1 = digitalio.DigitalInOut(board.ACCELEROMETER_INTERRUPT)
             try:
@@ -127,12 +142,26 @@ def __init__(self, i2c=None):
             except ValueError:
                 self._accelerometer = adafruit_lis3dh.LIS3DH_I2C(i2c, int1=int1)
 
+        # touchio on nose
         self.nose = touchio.TouchIn(board.NOSE)
+
+        # can be iffy, depending on environment and person.
+        # User code can tweak if needed.
         self.nose.threshold = 180
 
     @property
     def acceleration(self):
-        """Accelerometer data, +/- 2G sensitivity."""
+        """Accelerometer data, +/- 2G sensitivity.
+
+        This example initializes the mask and prints the accelerometer data.
+
+        .. code-block:: python
+
+            import adafruit_monsterm4sk
+            mask = adafruit_monsterm4sk.MonsterM4sk(i2c=board.I2C())
+            print(mask.acceleration)
+
+        """
         return (
             self._accelerometer.acceleration
             if self._accelerometer is not None
@@ -141,12 +170,36 @@ def acceleration(self):
 
     @property
     def light(self):
-        """Light sensor data."""
+        """Light sensor data.
+
+        This example initializes the mask and prints the light sensor data.
+
+        .. code-block:: python
+
+                import adafruit_monsterm4sk
+                mask = adafruit_monsterm4sk.MonsterM4sk(i2c=board.I2C())
+                print(mask.light)
+
+        """
         return self._ss.analog_read(SS_LIGHTSENSOR_PIN)
 
     @property
     def buttons(self):
-        """Buttons dictionary."""
+        """Buttons dictionary.
+
+        This example initializes the mask and prints when the S9 button
+        is pressed down.
+
+        .. code-block:: python
+
+                import adafruit_monsterm4sk
+                mask = adafruit_monsterm4sk.MonsterM4sk(i2c=board.I2C())
+
+                while True:
+                    if mask.buttons["S9"]:
+                        print("Button S9 pressed!")
+
+        """
 
         return {
             "S9": self._ss.digital_read(SS_SWITCH1_PIN) is False,
@@ -156,5 +209,19 @@ def buttons(self):
 
     @property
     def boop(self):
-        """Nose touch sense."""
+        """Nose touch sense.
+
+        This example initializes the mask and prints when the nose touch pad
+        is being touched.
+
+        .. code-block:: python
+
+                import adafruit_monsterm4sk
+                mask = adafruit_monsterm4sk.MonsterM4sk(i2c=board.I2C())
+
+                while True:
+                    if mask.boop:
+                        print("Nose touched!")
+
+        """
         return self.nose.value