Change Pause class to use seconds

#9 (comment)

adafruit_drv2605.py

@@ -267,11 +267,9 @@ def __repr__(self):
 
 
 class Pause:
-    """Class for adding a pause to the DRV2605 waveform sequence.
-    Duration is specified in tens of milliseconds, as per page 35
-    of the datasheet. I.e. Pause time = 10ms * duration
-    """
+    """DRV2605 waveform sequence timed delay."""
     def __init__(self, duration):
+        # Bit 7 must be set for a slot to be interpreted as a delay
         self._duration = 0x80
         self.duration = duration
 
@@ -282,15 +280,17 @@ def raw_value(self):
 
     @property
     def duration(self):
-        """Return the pause duration."""
-        return self._duration & 0x7f
+        """Pause duration in seconds."""
+        # Remove wait time flag bit and convert duration to seconds
+        return (self._duration & 0x7f) / 100.0
 
     @duration.setter
     def duration(self, duration):
-        """Set the pause duration."""
-        if not 0 <= duration <= 127:
-            raise ValueError('Pause duration must be a value within 0-127!')
-        self._duration = 0x80 | duration
+        """Set the pause duration in seconds."""
+        if not 0.0 <= duration <= 1.27:
+            raise ValueError('Pause duration must be a value within 0.0-1.27!')
+        # Add wait time flag bit and convert duration to centiseconds
+        self._duration = 0x80 | round(duration * 100.0)
 
     def __repr__(self):
         return "{}({})".format(type(self).__qualname__, self.duration)
@@ -318,7 +318,7 @@ def __getitem__(self, slot):
         # pylint: disable=protected-access
         slot_contents = self._drv2605._read_u8(_DRV2605_REG_WAVESEQ1 + slot)
         if slot_contents & 0x80:
-            return Pause(slot_contents & 0x7f)
+            return Pause((slot_contents & 0x7f) / 100.0)
         return Effect(slot_contents)
 
     def __iter__(self):

examples/drv2605_simpletest.py

@@ -24,7 +24,7 @@
     # them in interesting ways. Index the sequence property with a
     # slot number 0 to 6.
     # Optionally, you can assign a pause to a slot. E.g.
-    # drv.sequence[1] = adafruit_drv2605.Pause(5)  # Pause for 50 milliseconds
+    # drv.sequence[1] = adafruit_drv2605.Pause(0.5)  # Pause for half a second
     drv.play()  # Play the effect.
     time.sleep(0.5)
     # Increment effect ID and wrap back around to 1.