Add property style access to thresholds

adafruit_mpr121.py

@@ -80,6 +80,7 @@
 # pylint: enable=bad-whitespace
 
 class MPR121_Channel():
+    # pylint: disable=protected-access
     """Helper class to represent a touch channel on the MPR121. Not meant to
     be used directly."""
     def __init__(self, mpr121, channel):
@@ -96,6 +97,38 @@ def raw_value(self):
         """The raw touch measurement."""
         return self._mpr121.filtered_data(self._channel)
 
+    @property
+    def thresholds(self):
+        """The touch / release threholds."""
+        buf = bytearray(2)
+        self._mpr121._read_register_bytes(MPR121_TOUCHTH_0 + 2*self._channel, buf, 2)
+        return buf[0], buf[1]
+
+    @thresholds.setter
+    def thresholds(self, value):
+        touch, release = value
+        self._mpr121._write_register_byte(MPR121_TOUCHTH_0 + 2*self._channel, touch)
+        self._mpr121._write_register_byte(MPR121_RELEASETH_0 + 2*self._channel, release)
+
+    @property
+    def threshold(self):
+        """The touch threhold."""
+        return self.thresholds[0]
+
+    @threshold.setter
+    def threshold(self, value):
+        self._mpr121._write_register_byte(MPR121_TOUCHTH_0 + 2*self._channel, value)
+
+    @property
+    def release_threshold(self):
+        """The release threhold."""
+        return self.thresholds[1]
+
+    @release_threshold.setter
+    def release_threshold(self, value):
+        self._mpr121._write_register_byte(MPR121_RELEASETH_0 + 2*self._channel, value)
+
+
 class MPR121:
     """Driver for the MPR121 capacitive touch breakout board."""