Porting the MPU6886 from .NET nanoFramework (dotnet#1676)

* inital port from nanoFramework MPU6886

* adressing PR feedback

Author: jantielens

src/devices/Mpu6886/AccelerometerLowPowerMode.cs

@@ -0,0 +1,31 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+namespace Iot.Device.Mpu6886
+{
+    /// <summary>
+    /// Averaging filter settings for Low Power Accelerometer mode. (Datasheet page 37)
+    /// </summary>
+    public enum AccelerometerLowPowerMode
+    {
+        /// <summary>
+        /// Average of 4 samples.
+        /// </summary>
+        Average4Samples = 0b0000_0000,
+
+        /// <summary>
+        /// Average of 8 samples.
+        /// </summary>
+        Average8Samples = 0b0001_0000,
+
+        /// <summary>
+        /// Average of 16 samples.
+        /// </summary>
+        Average16Samples = 0b0010_0000,
+
+        /// <summary>
+        /// Average of 32 samples.
+        /// </summary>
+        Average32Samples = 0b0011_0000,
+    }
+}

src/devices/Mpu6886/AccelerometerScale.cs

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+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+namespace Iot.Device.Mpu6886
+{
+    /// <summary>
+    /// Accelerometer scale. (Datasheet page 37)
+    /// </summary>
+    public enum AccelerometerScale
+    {
+        /// <summary>
+        /// +- 2G
+        /// </summary>
+        Scale2G = 0b0000_0000,
+
+        /// <summary>
+        /// +- 4G
+        /// </summary>
+        Scale4G = 0b0000_1000,
+
+        /// <summary>
+        /// +- 8G
+        /// </summary>
+        Scale8G = 0b0001_0000,
+
+        /// <summary>
+        /// +- 16G
+        /// </summary>
+        Scale16G = 0b0001_1000
+    }
+}

src/devices/Mpu6886/AxisEnabled.cs

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+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using System;
+
+namespace Iot.Device.Mpu6886
+{
+    /// <summary>
+    /// Axes to enable
+    /// </summary>
+    [Flags]
+    public enum EnabledAxis
+    {
+        /// <summary>
+        /// Accelerometer X axis.
+        /// </summary>
+        AccelerometerX = 0b0010_0000,
+
+        /// <summary>
+        /// Accelerometer Y axis.
+        /// </summary>
+        AccelerometerY = 0b0001_0000,
+
+        /// <summary>
+        /// Accelerometer Z axis.
+        /// </summary>
+        AccelerometerZ = 0b0000_1000,
+
+        /// <summary>
+        /// Gyroscope X axis.
+        /// </summary>
+        GyroscopeX = 0b0000_0100,
+
+        /// <summary>
+        /// Gyroscope Y axis.
+        /// </summary>
+        GyroscopeY = 0b0000_0010,
+
+        /// <summary>
+        /// Gyroscope Z axis.
+        /// </summary>
+        GyroscopeZ = 0b0000_0001,
+    }
+}

src/devices/Mpu6886/GyroscopeScale.cs

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+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+namespace Iot.Device.Mpu6886
+{
+    /// <summary>
+    /// Gyroscope scale. (Datasheet page 37)
+    /// </summary>
+    public enum GyroscopeScale
+    {
+        /// <summary>
+        /// +- 250 dps
+        /// </summary>
+        Scale250dps = 0b0000_0000,
+
+        /// <summary>
+        /// +- 500 dps
+        /// </summary>
+        Scale500dps = 0b0000_1000,
+
+        /// <summary>
+        /// +- 1000 dps
+        /// </summary>
+        Scale1000dps = 0b0001_0000,
+
+        /// <summary>
+        /// +- 2000 dps
+        /// </summary>
+        Scale2000dps = 0b0001_1000
+    }
+}

src/devices/Mpu6886/InterruptEnable.cs

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+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using System;
+namespace Iot.Device.Mpu6886
+{
+    /// <summary>
+    /// WoM interrupt on axes of accelerometer.
+    /// </summary>
+    [Flags]
+    public enum InterruptEnable
+    {
+        /// <summary>
+        /// All axes disabled.
+        /// </summary>
+        None = 0x0000_0000,
+
+        /// <summary>
+        /// Enable X axis.
+        /// </summary>
+        Xaxis = 0b1000_0000,
+
+        /// <summary>
+        /// Enable Y axis.
+        /// </summary>
+        Yaxis = 0b0100_0000,
+
+        /// <summary>
+        /// Enable Z axis.
+        /// </summary>
+        Zaxis = 0b0010_0000,
+    }
+}