fix reported milliteslas to microtesla

Author: BrianPugh

README.rst

@@ -69,7 +69,7 @@ Usage Example
     tlv = adafruit_tlv493d.TLV493D(i2c)
 
     while True:
-        print("X: %s, Y:%s, Z:%s mT"%tlv.magnetic)
+        print("X: %s, Y:%s, Z:%s uT"%tlv.magnetic)
         time.sleep(1)
 
 Documentation

adafruit_tlv493d.py

@@ -158,7 +158,7 @@ def _set_write_key(self, key: str, value: int) -> None:
     @property
     def magnetic(self) -> Tuple[float, float, float]:
         """The processed magnetometer sensor values.
-        A 3-tuple of X, Y, Z axis values in milliteslas that are signed floats.
+        A 3-tuple of X, Y, Z axis values in microteslas that are signed floats.
         """
         self._read_i2c()  # update read registers
         x_top = self._get_read_key("BX1")
@@ -178,4 +178,4 @@ def magnetic(self) -> Tuple[float, float, float]:
     def _unpack_and_scale(top: int, bottom: int) -> float:
         binval = struct.unpack_from(">h", bytearray([top, bottom]))[0]
         binval = binval >> 4
-        return binval * 0.098
+        return binval * 98.0

examples/tlv493d_simpletest.py

@@ -9,5 +9,5 @@
 tlv = adafruit_tlv493d.TLV493D(i2c)
 
 while True:
-    print("X: %s, Y: %s, Z: %s mT" % tlv.magnetic)
+    print("X: %s, Y: %s, Z: %s uT" % tlv.magnetic)
     time.sleep(1)