Add binding for IS31FL3730 LED driver

src/devices/Is31fl3730/Bonnet5x7x6.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;
+using System.Collections.Generic;
+using System.Device.I2c;
+using System.Threading;
+
+namespace Iot.Device.Display
+{
+    /// <summary>
+    /// Represents LED Dot Matrix Breakout
+    /// </summary>
+    // Datasheet: https://cdn-shop.adafruit.com/product-files/3017/31FL3730.pdf
+    // Product: https://shop.pimoroni.com/products/led-dot-matrix-breakout
+    // Related repo: https://github.com/pimoroni/microdot-phat
+    public class Matrix5x7 : IDisposable
+    {
+        private readonly Is31fl3730 _is31fl3730;
+
+        /// <summary>
+        /// Initialize IS31FL3730 device
+        /// </summary>
+        /// <param name="is31fl3730">The <see cref="Iot.Device.Display.Is31fl3730"/> to create with.</param>
+        /// <param name="width">The width of the LED matrix.</param>
+        /// <param name="height">The height of the LED matrix.</param>
+        public Matrix5x7(Is31fl3730 is31fl3730, int width, int height, int matrix)
+        {
+            _is31fl3730 = is31fl3730;
+            Width = width;
+            Height = height;
+            Matrix = matrix;
+        }
+
+        /// <summary>
+        /// Indexer for matrix.
+        /// </summary>
+        public int this[int x, int y]
+        {
+            get => _is31fl3730.ReadLed(Matrix, x, y);
+            set => _is31fl3730.WriteLed(Matrix, x, y, value);
+        }
+
+        public const int DefaultI2cAddress = 0x61;
+
+        /// <summary>
+        /// Width of LED matrix (x axis).
+        /// </summary>
+        public readonly int Width = 5;
+
+        /// <summary>
+        /// Height of LED matrix (y axis).
+        /// </summary>
+        public readonly int Height = 7;
+
+        /// <summary>
+        /// Identification of matrix (of 2).
+        /// </summary>
+        public readonly int Matrix = 0;
+    }
+}

src/devices/Is31fl3730/BreakoutPair5x7.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;
+using System.Collections;
+using System.Collections.Generic;
+using System.Device.I2c;
+using System.Threading;
+
+namespace Iot.Device.Display
+{
+    /// <summary>
+    /// Represents an IS31FL3731 LED Matrix driver
+    /// </summary>
+    // Datasheet: https://cdn-shop.adafruit.com/product-files/3017/31FL3730.pdf
+    // Product: https://shop.pimoroni.com/products/microdot-phat
+    // Product: https://shop.pimoroni.com/products/led-dot-matrix-breakout
+    // Related repo: https://github.com/pimoroni/microdot-phat
+    public class BreakoutPair5x7 : IDisposable
+    {
+        private readonly Matrix3730 _matrixOne;
+        private readonly Matrix3730 _matrixTwo;
+        private readonly Matrix3730[] _pair = new Matrix3730[2];
+        private Is31fl3730 _is31fl3730;
+        private I2cDevice? _i2cDevice;
+
+        /// <summary>
+        /// Initialize IS31FL3730 device
+        /// </summary>
+        /// <param name="i2cDevice">The <see cref="System.Device.I2c.I2cDevice"/> to create with.</param>
+        public BreakoutPair5x7(I2cDevice? i2cDevice = null)
+        {
+            _i2cDevice = i2cDevice is not null ? i2cDevice : I2cDevice.Create(new(1, Is31fl3730.DefaultI2cAddress));
+            _is31fl3730 = new(_i2cDevice);
+            _is31fl3730.DisplayMode = DisplayMode.MatrixOneAndTwo;
+            _is31fl3730.Initialize();
+            _matrixOne = new Matrix3730(_is31fl3730, 0);
+            _matrixTwo = new Matrix3730(_is31fl3730, 1);
+            _pair = new Matrix3730[] { _matrixOne, _matrixTwo };
+        }
+
+        /// <summary>
+        /// Initialize IS31FL3730 device
+        /// </summary>
+        /// <param name="is31fl3730">The <see cref="Iot.Device.Display.Is31fl3730"/> to create with.</param>
+        public BreakoutPair5x7(Is31fl3730 is31fl3730)
+        {
+            _is31fl3730 = is31fl3730;
+            _matrixOne = new Matrix3730(_is31fl3730, 0);
+            _matrixTwo = new Matrix3730(_is31fl3730, 1);
+            _pair = new Matrix3730[] { _matrixOne, _matrixTwo };
+        }
+
+        /// <summary>
+        /// Indexer for matrix pair.
+        /// </summary>
+        public Matrix3730 this[int matrix]
+        {
+            get => _pair[matrix];
+        }
+
+        /// <summary>
+        /// Default I2C address for device.
+        /// </summary>
+        public const int DefaultI2cAddress = 0x61;
+
+        /// <summary>
+        /// Width of LED matrix (x axis).
+        /// </summary>
+        public readonly int Width = 10;
+
+        /// <summary>
+        /// Height of LED matrix (y axis).
+        /// </summary>
+        public readonly int Height = 7;
+
+        /// <summary>
+        /// Identification of matrix (of 2).
+        /// </summary>
+        public readonly int Matrix = 0;
+
+        /// <summary>
+        /// Fill All LEDs.
+        /// </summary>
+        public void Fill(int value) => _is31fl3730.FillAll(value);
+
+        /// <inheritdoc/>
+        public void Dispose()
+        {
+            _is31fl3730?.Dispose();
+            _is31fl3730 = null!;
+            _i2cDevice?.Dispose();
+            _i2cDevice = null!;
+        }
+    }
+}

src/devices/Is31fl3730/Current.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;
+using System.Threading;
+using System.Threading.Tasks;
+using System.Device.Gpio;
+using System.Device.Spi;
+using Iot.Device.Multiplexing.Utility;
+
+namespace Iot.Device.Display
+{
+    /// <summary>
+    /// Represents an IS31FL3731 LED Matrix driver
+    /// </summary>
+    public enum Current
+    {
+        /// <summary>
+        /// 5 mA
+        /// </summary>
+        MA5 = 0b1000,
+
+        /// <summary>
+        /// 10 mA
+        /// </summary>
+        MA10 = 0b1001,
+
+        /// <summary>
+        /// 35 mA
+        /// </summary>
+        MA35 = 0b1110,
+
+        /// <summary>
+        /// 10 mA
+        /// </summary>
+        MA40 = 0b0,
+
+        /// <summary>
+        /// 10 mA
+        /// </summary>
+        MA45 = 0b0001,
+
+        /// <summary>
+        /// 40 mA
+        /// </summary>
+        MA75 = 0b0111,
+    }
+}

src/devices/Is31fl3730/DisplayMode.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;
+using System.Threading;
+using System.Threading.Tasks;
+using System.Device.Gpio;
+using System.Device.Spi;
+using Iot.Device.Multiplexing.Utility;
+
+namespace Iot.Device.Display
+{
+    /// <summary>
+    /// Represents an IS31FL3731 LED Matrix driver
+    /// </summary>
+    public enum DisplayMode
+    {
+        /// <summary>
+        /// Enable matrix one only.
+        /// </summary>
+        MatrixOneOnly = 0x0,
+
+        /// <summary>
+        /// Enable matrix two only.
+        /// </summary>
+        MatrixTwoOnly = 0x8,
+
+        /// <summary>
+        /// Enable matrix one and two.
+        /// </summary>
+        MatrixOneAndTwo = 0x18,
+    }
+}