Merge pull request #5 from FoamyGuy/master

adding inclinometer example

Author: siddacious

examples/mpu6050_inclinometer.py

@@ -0,0 +1,37 @@
+# Display inclination data five times per second
+
+# See this page to learn the math and physics principals behind this example:
+# https://learn.adafruit.com/how-tall-is-it/gravity-and-acceleration
+
+import time
+from math import atan2, degrees
+import board
+import busio
+import adafruit_mpu6050
+
+i2c = busio.I2C(board.SCL, board.SDA)
+sensor = adafruit_mpu6050.MPU6050(i2c)
+
+
+# Given a point (x, y) return the angle of that point relative to x axis.
+# Returns: angle in degrees
+
+def vector_2_degrees(x, y):
+    angle = degrees(atan2(y, x))
+    if angle < 0:
+        angle += 360
+    return angle
+
+
+# Given an accelerometer sensor object return the inclination angles of X/Z and Y/Z
+# Returns: tuple containing the two angles in degrees
+
+def get_inclination(_sensor):
+    x, y, z = _sensor.acceleration
+    return vector_2_degrees(x, z), vector_2_degrees(y, z)
+
+
+while True:
+    angle_xz, angle_yz = get_inclination(sensor)
+    print("XZ angle = {:6.2f}deg   YZ angle = {:6.2f}deg".format(angle_xz, angle_yz))
+    time.sleep(0.2)