Merge pull request #6 from microbuilder/master

Updated class to use `.magnetic` property

Author: ladyada

README.rst

@@ -66,7 +66,7 @@ Usage Example
     SENSOR = adafruit_mlx90393.MLX90393(I2C_BUS, gain=adafruit_mlx90393.GAIN_1X)
 
     while True:
-        MX, MY, MZ = SENSOR.magnetic()
+        MX, MY, MZ = SENSOR.magnetic
         print("[{}]".format(time.monotonic()))
         print("X: {} uT".format(MX))
         print("Y: {} uT".format(MY))

adafruit_mlx90393.py

@@ -265,6 +265,7 @@ def reset(self):
         return self._status_last
 
 
+    @property
     def read_data(self):
         """
         Reads a single X/Y/Z sample from the magnetometer.
@@ -277,19 +278,20 @@ def read_data(self):
         self._status_last, m_x, m_y, m_z = struct.unpack(">Bhhh", data)
 
         # Return the raw int values if requested
-        return m_x, m_y, m_z
+        return (m_x, m_y, m_z)
 
 
+    @property
     def magnetic(self):
         """
         The processed magnetometer sensor values.
         A 3-tuple of X, Y, Z axis values in microteslas that are signed floats.
         """
-        m_x, m_y, m_z = self.read_data()
+        x, y, z = self.read_data
 
         # Convert the raw integer values to uT based on gain and resolution
-        m_x *= _LSB_LOOKUP[self._gain_current][self._res_current][0]
-        m_y *= _LSB_LOOKUP[self._gain_current][self._res_current][0]
-        m_z *= _LSB_LOOKUP[self._gain_current][self._res_current][1]
+        x *= _LSB_LOOKUP[self._gain_current][self._res_current][0]
+        y *= _LSB_LOOKUP[self._gain_current][self._res_current][0]
+        z *= _LSB_LOOKUP[self._gain_current][self._res_current][1]
 
-        return m_x, m_y, m_z
+        return x, y, z

examples/adafruit_mlx90393_simpletest.py

@@ -8,7 +8,7 @@
 SENSOR = adafruit_mlx90393.MLX90393(I2C_BUS, gain=adafruit_mlx90393.GAIN_1X)
 
 while True:
-    MX, MY, MZ = SENSOR.magnetic()
+    MX, MY, MZ = SENSOR.magnetic
     print("[{}]".format(time.monotonic()))
     print("X: {} uT".format(MX))
     print("Y: {} uT".format(MY))