fix for ustruct/struct import error in Issue #1

adafruit_mpl3115a2.py

@@ -31,7 +31,10 @@
 import time
 
 from micropython import const
-import ustruct
+try:
+    import ustruct as struct
+except ImportError:
+    import struct
 
 import adafruit_bus_device.i2c_device as i2c_device
 
@@ -214,7 +217,7 @@ def altitude(self):
         # Reconstruct signed 32-bit altitude value (actually 24 bits shifted up
         # and then scaled down).
         self._BUFFER[3] = 0  # Top 3 bytes of buffer were read from the chip.
-        altitude = ustruct.unpack('>i', self._BUFFER[0:4])[0]
+        altitude = struct.unpack('>i', self._BUFFER[0:4])[0]
         # Scale down to meters.
         return altitude / 65535.0
 
@@ -228,7 +231,7 @@ def temperature(self):
         # Read 2 bytes of data from temp register.
         self._read_into(_MPL3115A2_REGISTER_TEMP_MSB, self._BUFFER, count=2)
         # Reconstruct signed 12-bit value.
-        temperature = ustruct.unpack('>h', self._BUFFER[0:2])[0]
+        temperature = struct.unpack('>h', self._BUFFER[0:2])[0]
         temperature >>= 4
         # Scale down to degrees Celsius.
         return temperature / 16.0

docs/conf.py

@@ -19,7 +19,7 @@
 # Uncomment the below if you use native CircuitPython modules such as
 # digitalio, micropython and busio. List the modules you use. Without it, the
 # autodoc module docs will fail to generate with a warning.
-autodoc_mock_imports = ["micropython", "adafruit_bus_device", "adafruit_bus_device.i2c_device", "ustruct"]
+autodoc_mock_imports = ["micropython", "adafruit_bus_device", "adafruit_bus_device.i2c_device", "struct"]
 
 intersphinx_mapping = {'python': ('https://docs.python.org/3.4', None),'BusDevice': ('https://circuitpython.readthedocs.io/projects/bus_device/en/latest/', None),'CircuitPython': ('https://circuitpython.readthedocs.io/en/latest/', None)}