I2C seems to be working correctly :)

Author: DanielSSilva

src/Microsoft.PowerShell.IoT/I2c/Get/GetI2cDevice.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Management.Automation;  // PowerShell namespace.
+using System.Device.I2c;
 
 [Cmdlet(VerbsCommon.Get, "I2CDevice")]
 public class GetI2CDevice : Cmdlet
@@ -18,17 +19,9 @@ public GetI2CDevice()
 
 	protected override void ProcessRecord()
 	{
-		try
-		{
-			WriteObject(new I2CDevice(Unosquare.RaspberryIO.Pi.I2C.AddDevice(this.Id), this.Id, this.FriendlyName));
-		}
-		catch (System.TypeInitializationException e) // Unosquare.RaspberryIO.Gpio.GpioController.Initialize throws this TypeInitializationException
-		{
-			if (!Unosquare.RaspberryIO.Computer.SystemInfo.Instance.IsRunningAsRoot)
-			{
-				throw new PlatformNotSupportedException(Resources.ErrNeedRootPrivileges, e);
-			}
-			throw;
-		}
+		var settings = new I2cConnectionSettings(1, this.Id);
+		I2cDevice device = I2cDevice.Create(settings);
+		WriteObject(new I2CDevice(device, this.Id, this.FriendlyName));
+
 	}
 }

src/Microsoft.PowerShell.IoT/I2c/Get/GetI2cRegister.cs

@@ -23,44 +23,40 @@ public GetI2CRegister()
 
 	protected override void ProcessRecord()
 	{
-		try
+		if (this.ByteCount > 1)
 		{
-			if (this.ByteCount > 1)
+			byte[] writeBuffer = new byte[] { (byte)this.Register };
+			Span<byte> readBuffer = stackalloc byte[ByteCount];
+
+			this.Device.device.Read(readBuffer);
+
+			if (this.Raw)
 			{
-				this.Device.device.Write((byte)this.Register);
-				byte[] value = this.Device.device.Read(this.ByteCount);
-				if (this.Raw)
-				{
-					WriteObject(value);
-				}
-				else
-				{
-					I2CDeviceRegisterData result = new I2CDeviceRegisterData(this.Device, this.Register);
-					result.Data = value;
-					WriteObject(result);
-				}
+				WriteObject(readBuffer.ToArray());
 			}
 			else
 			{
-				byte value = this.Device.device.ReadAddressByte(this.Register);
-				if (this.Raw)
+				I2CDeviceRegisterData result = new I2CDeviceRegisterData(this.Device, this.Register)
 				{
-					WriteObject(value);
-				}
-				else
-				{
-					I2CDeviceRegisterData result = new I2CDeviceRegisterData(this.Device, this.Register, new byte[1] { value });
-					WriteObject(result);
-				}
+					Data = readBuffer.ToArray() // optimize to be Span? How does PowerShell deal with it?
+				};
+				WriteObject(result);
 			}
 		}
-		catch (System.TypeInitializationException e) // Unosquare.RaspberryIO.Gpio.GpioController.Initialize throws this TypeInitializationException
+		else
 		{
-			if (!Unosquare.RaspberryIO.Computer.SystemInfo.Instance.IsRunningAsRoot)
+			this.Device.device.WriteByte((byte)this.Register);
+			byte value = this.Device.device.ReadByte();
+			//byte value = this.Device.device.ReadAddressByte(this.Register);
+			if (this.Raw)
+			{
+				WriteObject(value);
+			}
+			else
 			{
-				throw new PlatformNotSupportedException(Resources.ErrNeedRootPrivileges, e);
+				I2CDeviceRegisterData result = new I2CDeviceRegisterData(this.Device, this.Register, new byte[1] { value });
+				WriteObject(result);
 			}
-			throw;
 		}
 	}
 }

src/Microsoft.PowerShell.IoT/I2c/I2cDevice.cs

@@ -1,12 +1,11 @@
 public class I2CDevice
 {
-	internal Unosquare.RaspberryIO.Gpio.I2CDevice device = null;
-	internal System.Device.I2c.I2cDevice device_v2 = null;
+	internal System.Device.I2c.I2cDevice device = null;
 
 	public string FriendlyName { get; set; }
 	public int Id { get; set; }
 
-	public I2CDevice(Unosquare.RaspberryIO.Gpio.I2CDevice device, int Id, string FriendlyName)
+	public I2CDevice(System.Device.I2c.I2cDevice device, int Id, string FriendlyName)
 	{
 		this.device = device;
 		this.Id = Id;

src/Microsoft.PowerShell.IoT/I2c/Set/SetI2cRegister.cs

@@ -18,22 +18,12 @@ public class SetI2CRegister : Cmdlet
 
 	protected override void ProcessRecord()
 	{
-		try
+		Span<byte> dataOut = stackalloc byte[] { (byte)Register, Data[0] };
+		this.Device.device.Write(dataOut);
+		if (this.PassThru)
 		{
-			this.Device.device.WriteAddressByte(this.Register, this.Data[0]);
-			if (this.PassThru)
-			{
-				I2CDeviceRegisterData result = new I2CDeviceRegisterData(this.Device, this.Register, this.Data);
-				WriteObject(result);
-			}
-		}
-		catch (System.TypeInitializationException e) // Unosquare.RaspberryIO.Gpio.GpioController.Initialize throws this TypeInitializationException
-		{
-			if (!Unosquare.RaspberryIO.Computer.SystemInfo.Instance.IsRunningAsRoot)
-			{
-				throw new PlatformNotSupportedException(Resources.ErrNeedRootPrivileges, e);
-			}
-			throw;
+			I2CDeviceRegisterData result = new I2CDeviceRegisterData(this.Device, this.Register, this.Data);
+			WriteObject(result);
 		}
 	}
 }