Initial progress dump for Mcp25xxx binding

src/devices/Mcp25xxx/Mcp2515.cs

@@ -0,0 +1,55 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Device.Gpio;
+using System.Device.Spi;
+
+namespace Iot.Device.Mcp25xxx
+{
+    /// <summary>
+    /// Driver for the Microchip MCP2515 CAN controller.
+    /// </summary>
+    public class Mcp2515 : Mcp25xxx
+    {
+        /// <summary>
+        /// Initializes a new instance of the Mcp2515 class.
+        /// </summary>
+        /// <param name="spiDevice">The SPI device used for communication.</param>
+        /// <param name="reset">The output pin number that is connected to Reset.</param>
+        /// <param name="tx0rts">The output pin number that is connected to Tx0RTS.</param>
+        /// <param name="tx1rts">The output pin number that is connected to Tx1RTS.</param>
+        /// <param name="tx2rts">The output pin number that is connected to Tx2RTS.</param>
+        /// <param name="interrupt">The input pin number that is connected to INT.</param>
+        /// <param name="rx0bf">The input pin number that is connected to Rx0BF.</param>
+        /// <param name="rx1bf">The input pin number that is connected to Rx1BF.</param>
+        /// <param name="clkout">The input pin number that is connected to CLKOUT.</param>
+        /// <param name="masterGpioController">
+        /// The GPIO controller for defined external pins. If not specified, the default controller will be used.
+        /// </param>
+        public Mcp2515(
+            SpiDevice spiDevice,
+            int reset = -1,
+            int tx0rts = -1,
+            int tx1rts = -1,
+            int tx2rts = -1,
+            int interrupt = -1,
+            int rx0bf = -1,
+            int rx1bf = -1,
+            int clkout = -1,
+            IGpioController masterGpioController = null)
+            : base(
+                  spiDevice,
+                  reset,
+                  tx0rts,
+                  tx1rts,
+                  tx2rts,
+                  interrupt,
+                  rx0bf,
+                  rx1bf,
+                  clkout,
+                  masterGpioController)
+        {
+        }
+    }
+}

src/devices/Mcp25xxx/Mcp25625.cs

@@ -0,0 +1,81 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Device.Gpio;
+using System.Device.Spi;
+
+namespace Iot.Device.Mcp25xxx
+{
+    /// <summary>
+    /// Driver for the Microchip MCP25625 CAN controller.
+    /// </summary>
+    public class Mcp25625 : Mcp25xxx
+    {
+        private readonly int _standby;
+
+        /// <summary>
+        /// Initializes a new instance of the Mcp25625 class.
+        /// </summary>
+        /// <param name="spiDevice">The SPI device used for communication.</param>
+        /// <param name="reset">The output pin number that is connected to Reset.</param>
+        /// <param name="tx0rts">The output pin number that is connected to Tx0RTS.</param>
+        /// <param name="tx1rts">The output pin number that is connected to Tx1RTS.</param>
+        /// <param name="tx2rts">The output pin number that is connected to Tx2RTS.</param>
+        /// <param name="standby">The output pin number that is connected to STBY.</param>
+        /// <param name="interrupt">The input pin number that is connected to INT.</param>
+        /// <param name="rx0bf">The input pin number that is connected to Rx0BF.</param>
+        /// <param name="rx1bf">The input pin number that is connected to Rx1BF.</param>
+        /// <param name="clkout">The input pin number that is connected to CLKOUT.</param>
+        /// <param name="masterGpioController">
+        /// The GPIO controller for defined external pins. If not specified, the default controller will be used.
+        /// </param>
+        public Mcp25625(
+            SpiDevice spiDevice,
+            int reset = -1,
+            int tx0rts = -1,
+            int tx1rts = -1,
+            int tx2rts = -1,
+            int standby = -1,
+            int interrupt = -1,
+            int rx0bf = -1,
+            int rx1bf = -1,
+            int clkout = -1,
+            IGpioController masterGpioController = null)
+            : base(
+                  spiDevice,
+                  reset,
+                  tx0rts,
+                  tx1rts,
+                  tx2rts,
+                  interrupt,
+                  rx0bf,
+                  rx1bf,
+                  clkout,
+                  masterGpioController)
+        {
+            _standby = standby;
+
+            if (_standby != -1)
+            {
+                // Master controller should already be configured if other pins are used.
+                _masterGpioController = _masterGpioController ?? new GpioController();
+                _masterGpioController.OpenPin(_standby, PinMode.Output);
+            }
+        }
+
+        /// <summary>
+        /// Writes a value to STBY pin.
+        /// </summary>
+        public void WriteStandbyPin(PinValue value)
+        {
+            if (_standby == -1)
+            {
+                throw new InvalidOperationException("No Standby pin configured.");
+            }
+
+            _masterGpioController.Write(_standby, value);
+        }
+    }
+}