Create I2S Configuration Class

System.Device.I2s/I2sBitsPerSample.cs

@@ -0,0 +1,34 @@
+//
+// Copyright (c) .NET Foundation and Contributors
+// See LICENSE file in the project root for full license information.
+//
+
+namespace System.Device.I2s
+{
+    /// <summary>
+    /// Defines how bit per sample is synchronized between devices on a I2s bus.
+    /// </summary>
+    public enum I2sBitsPerSample
+    {
+        /// <summary>
+        /// I2S bits per sample: 8-bits
+        /// </summary>
+        Bit8 = 8,
+
+        /// <summary>
+        /// I2S bits per sample: 16-bits
+        /// </summary>
+        Bit16 = 16,
+
+        /// <summary>
+        /// I2S bits per sample: 24-bits
+        /// </summary>
+        Bit24 = 24,
+
+        /// <summary>
+        /// I2S bits per sample: 32-bits
+        /// </summary>
+        Bit32 = 32
+
+    }
+}

System.Device.I2s/I2sChannel.cs

@@ -0,0 +1,23 @@
+//
+// Copyright (c) .NET Foundation and Contributors
+// See LICENSE file in the project root for full license information.
+//
+
+namespace System.Device.I2s
+{
+    /// <summary>
+    /// Defines channels on a I2s bus.
+    /// </summary>
+    public enum I2sChannel
+    {
+        /// <summary>
+        /// I2S 1 channel (mono)
+        /// </summary>
+        Mono = 1,
+
+        /// <summary>
+        /// I2S 2 channel (stereo)
+        /// </summary>
+        Stereo = 2,
+    }
+}

System.Device.I2s/I2sChannelFormat.cs

@@ -0,0 +1,38 @@
+//
+// Copyright (c) .NET Foundation and Contributors
+// See LICENSE file in the project root for full license information.
+//
+
+namespace System.Device.I2s
+{
+    /// <summary>
+    /// Defines channels on a I2s bus.
+    /// </summary>
+    public enum I2sChannelFormat
+    {
+        /// <summary>
+        /// I2S_CHANNEL_FMT_RIGHT_LEFT
+        /// </summary>
+        RightLeft = 0x00,
+
+        /// <summary>
+        /// I2S_CHANNEL_FMT_ALL_RIGHT
+        /// </summary>
+        AllRight,
+
+        /// <summary>
+        /// I2S_CHANNEL_FMT_ALL_LEFT
+        /// </summary>
+        AllLeft,
+
+        /// <summary>
+        /// I2S_CHANNEL_FMT_ONLY_RIGHT
+        /// </summary>
+        OnlyRight,
+
+        /// <summary>
+        /// I2S_CHANNEL_FMT_ONLY_LEFT
+        /// </summary>
+        OnlyLeft
+    }
+}

System.Device.I2s/I2sCommunicationFormat.cs

@@ -0,0 +1,43 @@
+//
+// Copyright (c) .NET Foundation and Contributors
+// See LICENSE file in the project root for full license information.
+//
+
+namespace System.Device.I2s
+{
+    /// <summary>
+    /// Defines channels on a I2s bus.
+    /// </summary>
+    public enum I2sCommunicationFormat
+    {
+        /// <summary>
+        /// I2S communication I2S Philips standard, data launch at second BCK
+        /// </summary>
+        StandardI2s = 0X01,
+
+        /// <summary>
+        /// I2S format LSB, (I2S_COMM_FORMAT_I2S |I2S_COMM_FORMAT_I2S_LSB) correspond to I2S_MSB
+        /// </summary>
+        Lsb = 0X02,
+
+        /// <summary>
+        /// I2S communication MSB alignment standard, data launch at first BCK
+        /// </summary>
+        Msb = 0X03,
+
+        /// <summary>
+        /// PCM Short standard, also known as DSP mode. The period of synchronization signal (WS) is 1 bck cycle.
+        /// </summary>
+        PcmShort = 0X04,
+
+        /// <summary>
+        /// PCM Long standard. The period of synchronization signal (WS) is channel_bit*bck cycles.
+        /// </summary>
+        PcmLong = 0X0C,
+
+        /// <summary>
+        /// standard max
+        /// </summary>
+        StandMax,                
+    }
+}

System.Device.I2s/I2sConnectionSettings.cs

@@ -1,8 +1,132 @@
-using System;
+//
+// Copyright (c) .NET Foundation and Contributors
+// See LICENSE file in the project root for full license information.
+//
+
+using System;
 
 namespace System.Device.I2s
 {
-    public class I2sConnectionSettings
+    /// <summary>
+    /// The connection settings of a device on a I2Sbus.
+    /// </summary>
+    public sealed class I2sConnectionSettings
     {
+        private int _busId = 1;
+
+        private int _sampleRate = 44_100;
+
+        private I2sMode _i2sMode = I2sMode.Pdm;
+
+        private I2sBitsPerSample _i2sBitsPerSample = I2sBitsPerSample.Bit16;
+
+        private I2sChannelFormat _i2sChannelFormat = I2sChannelFormat.RightLeft;
+
+        private I2sCommunicationFormat _i2sConnectionFormat = I2sCommunicationFormat.StandardI2s;
+
+        /// <summary>
+        /// Initializes new instance of I2sConnectionSettings.
+        /// </summary>
+
+        private I2sConnectionSettings()
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="I2sConnectionSettings"/> class.
+        /// </summary>
+        /// <param name="busId">The bus ID the device is connected to.</param>
+        public I2sConnectionSettings(int busId)
+        {
+            BusId = busId;
+        }
+
+        internal I2sConnectionSettings(I2sConnectionSettings other)
+        {
+            BusId = other.BusId;
+            Mode = other.Mode;
+            SampleRate = other.SampleRate;
+            CommunicationFormat = other.CommunicationFormat;
+            ChannelFormat = other.ChannelFormat;
+            BitsPerSample = other.BitsPerSample;
+        }
+
+        /// <summary>
+        /// The bus ID the device is connected to.
+        /// </summary>
+        public int BusId
+        {
+            get => _busId;
+
+            set
+            {
+                _busId = value;
+            }
+        }
+
+        /// <summary>
+        /// The I2Smode being used.
+        /// </summary>
+        public I2sMode Mode
+        {
+            get => _i2sMode;
+
+            set
+            {
+                _i2sMode = value;
+            }
+        }
+
+        /// <summary>
+        /// Bits per sample
+        /// </summary>
+        public I2sBitsPerSample BitsPerSample
+        {
+            get => _i2sBitsPerSample;
+
+            set
+            {
+                _i2sBitsPerSample = value;
+            }
+        }
+
+        /// <summary>
+        /// I2S Channel Format
+        /// </summary>
+        public I2sChannelFormat ChannelFormat
+        {
+            get => _i2sChannelFormat;
+
+            set
+            {
+                _i2sChannelFormat = value;
+            }
+        }
+
+        /// <summary>
+        /// Specifies communication format on the I2Sbus.
+        /// </summary>
+        public I2sCommunicationFormat CommunicationFormat
+        {
+            get => _i2sConnectionFormat;
+
+            set
+            {
+                _i2sConnectionFormat = value;
+            }
+        }
+
+        /// <summary>
+        /// Sample Rate.
+        /// </summary>
+        public int SampleRate
+        {
+            get => _sampleRate;
+
+            set
+            {
+                _sampleRate = value;
+            }
+        }
     }
-}
+}

System.Device.I2s/I2sMode.cs

@@ -0,0 +1,49 @@
+//
+// Copyright (c) .NET Foundation and Contributors
+// See LICENSE file in the project root for full license information.
+//
+
+namespace System.Device.I2s
+{
+    /// <summary>
+    /// Defines how data is synchronized between devices on a I2s bus.
+    /// </summary>
+    public enum I2sMode
+    {
+        /// <summary>
+        /// Master mode
+        /// </summary>
+        Master = 1,
+
+        /// <summary>
+        /// Slave mode
+        /// </summary>
+        Slave = 2,
+
+        /// <summary>
+        /// TX mode
+        /// </summary>
+        Tx = 4,
+
+        /// <summary>
+        /// RX mode
+        /// </summary>
+        Rx = 8,
+
+        /// <summary>
+        /// Output I2S data to built-in DAC, no matter the data format is 16bit or 32 bit, the DAC module will only take the 8bits from MSB
+        /// </summary>
+        DacBuiltIn = 16,
+
+        /// <summary>
+        /// Input I2S data from built-in ADC, each data can be 12-bit width at most
+        /// </summary>
+        AdcBuiltIn = 32,
+
+        /// <summary>
+        /// PDM mode
+        /// </summary>
+        Pdm = 64
+
+    }
+}

System.Device.I2s/System.Device.I2s.nfproj

@@ -44,8 +44,13 @@
   </ItemGroup>
   <Import Project="$(NanoFrameworkProjectSystemPath)NFProjectSystem.props" Condition="Exists('$(NanoFrameworkProjectSystemPath)NFProjectSystem.props')" />
   <ItemGroup>
+    <Compile Include="I2sBitsPerSample.cs" />
+    <Compile Include="I2sChannel.cs" />
+    <Compile Include="I2sChannelFormat.cs" />
+    <Compile Include="I2sCommunicationFormat.cs" />
     <Compile Include="I2sConnectionSettings.cs" />
     <Compile Include="I2sDevice.cs" />
+    <Compile Include="I2sMode.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
   <ItemGroup>

nanoFramework.System.Device.I2s.sln

@@ -1,7 +1,7 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 15
-VisualStudioVersion = 15.0.27130.2010
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.31702.278
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{11A8DD76-328B-46DF-9F39-F559912D0360}") = "System.Device.I2s", "System.Device.I2s\System.Device.I2s.nfproj", "{D74A7890-8A23-417B-AB74-923D57E987EA}"
 EndProject