C# Mudbus开发

using System;
using System.IO;
using System.Runtime.InteropServices;
using System.Text;
using Modbus.IO;
using Modbus.Utility;

namespace FtdAdapter
{
	/// 

	/// Specifies the number of stop bits used on the UsbPort object.
	/// 

	public enum FtdStopBits
	{
		/// 

		/// One stop bit is used.
		/// 

		One = 1
		/// 

		/// 1.5 stop bits are used.
		/// 

		OnePointFive
		/// 

		/// Two stop bits are used.
		/// 

		Two
	}

	/// 

	/// Specifies the parity used on the UsbPort object.
	/// 

	public enum FtdParity
	{
		/// 

		/// No parity check occurs.
		/// 

		None = 0
		/// 

		/// Sets the parity bit so that the count of bits set is an odd number.
		/// 

		Odd
		/// 

		/// Sets the parity bit so that the count of bits set is an even number.
		/// 

		Even
		/// 

		/// Leaves the parity bit set to 1.
		/// 

		Mark
		/// 

		/// Leaves the parity bit set to 0.
		/// 

		Space
	}

	/// 

	/// Specifies the result of a UsbPort operation.
	/// 

	internal enum FtdStatus
	{
		OK = 0
		InvalidHandle
		DeviceNotFound
		DeviceNotOpened
		IOError
		InsufficientResources
		InvalidParameter
		InvalidBaudRate
		DeviceNotOpenedForErase
		DeviceNotOpenedForWrite
		FailedToWriteDevice
		EEPromReadFailed
		EEPromWriteFailed
		EEPromEraseFailed
		EEPromNotPresent
		EEPromNotProgrammed
		InvalidArgs
		OtherError
	};

	/// 

	/// Wrapper class for the FTD2XX USB resource.
	/// 

	public class FtdUsbPort : ISerialResource IDisposable
	{
		[DllImport（FtdAssemblyName）]
		static extern FtdStatus FT_Close（uint deviceHandle）;
		[DllImport（FtdAssemblyName）]
		static extern FtdStatus FT_Open（uint deviceID ref uint deviceHandle）;
		[DllImport（FtdAssemblyName）]
		static extern FtdStatus FT_SetBaudRate（uint deviceHandle uint baudRate）;
		[DllImport（FtdAssemblyName）]
		static extern FtdStatus FT_SetDataCharacteristics（uint deviceHandle byte wordLength byte stopBits byte parity）;
		[DllImport（FtdAssemblyName）]
		static extern unsafe FtdStatus FT_Read（uint deviceHandle void* buffer uint bytesToRead ref uint bytesReturned）;
		[DllImport（FtdAssemblyName）]
		static extern unsafe FtdStatus FT_Write（uint deviceHandle void* buffer uint bytesToWrite ref uint bytesWritten）;
		[DllImport（FtdAssemblyName）]
		static extern FtdStatus FT_SetTimeouts（uint deviceHandle uint readTimeout uint writeTimeout）;
		[DllImport（FtdAssemblyName）]
		static extern FtdStatus FT_Purge（uint deviceHandle uint mask）;
		[DllImport（FtdAssemblyName）]
		static extern FtdStatus FT_CreateDeviceInfoList（ref uint deviceCount）;

		private const string FtdAssemblyName = “FTD2XX.dll“;
		private const byte PurgeRx = 1;
		private const uint _infiniteTimeout = 0;
		//priv

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2018-11-22 20:18  MUDBUS
     目录           0  2018-11-22 20:15  MUDBUS24415425NModbus_1.6.0.0-source
     目录           0  2018-11-22 20:15  MUDBUS24415425NModbus_1.6.0.0-sourcein
     文件      202048  2008-03-10 18:53  MUDBUS24415425NModbus_1.6.0.0-sourceinFTD2XX.dll
     文件       12288  2008-03-10 19:02  MUDBUS24415425NModbus_1.6.0.0-sourceinFtdAdapter.dll
     文件      270336  2008-03-10 18:53  MUDBUS24415425NModbus_1.6.0.0-sourceinlog4net.dll
     文件       73728  2008-03-10 19:02  MUDBUS24415425NModbus_1.6.0.0-sourceinModbus.dll
     文件      283445  2008-03-10 19:03  MUDBUS24415425NModbus_1.6.0.0-sourceNModbus.chm
     文件        1633  2008-03-10 18:54  MUDBUS24415425NModbus_1.6.0.0-sourceREADME.txt
     目录           0  2018-11-22 20:15  MUDBUS24415425NModbus_1.6.0.0-sourcesource
     目录           0  2018-11-22 20:15  MUDBUS24415425NModbus_1.6.0.0-sourcesourcelib
     文件      202048  2008-03-10 18:53  MUDBUS24415425NModbus_1.6.0.0-sourcesourcelibFTD2XX.dll
     文件      270336  2008-03-10 18:53  MUDBUS24415425NModbus_1.6.0.0-sourcesourceliblog4net.dll
     文件       45056  2008-03-10 18:53  MUDBUS24415425NModbus_1.6.0.0-sourcesourcelib
unit.framework.dll
     文件      210432  2008-03-10 18:53  MUDBUS24415425NModbus_1.6.0.0-sourcesourcelibRhino.Mocks.dll
     文件        9573  2008-03-10 18:56  MUDBUS24415425NModbus_1.6.0.0-sourcesourceNModbus.build
     文件        2891  2008-03-10 18:54  MUDBUS24415425NModbus_1.6.0.0-sourcesourceNModbus.shfb
     目录           0  2018-11-22 20:15  MUDBUS24415425NModbus_1.6.0.0-sourcesourcesrc
     目录           0  2018-11-22 20:15  MUDBUS24415425NModbus_1.6.0.0-sourcesourcesrcFtdAdapter
     文件        3060  2008-03-10 18:54  MUDBUS24415425NModbus_1.6.0.0-sourcesourcesrcFtdAdapterFtdAdapter.csproj
     文件       12921  2008-03-10 18:54  MUDBUS24415425NModbus_1.6.0.0-sourcesourcesrcFtdAdapterFtdUsbPort.cs
     目录           0  2018-11-22 20:15  MUDBUS24415425NModbus_1.6.0.0-sourcesourcesrcFtdAdapterProperties
     文件        1377  2008-03-10 18:54  MUDBUS24415425NModbus_1.6.0.0-sourcesourcesrcFtdAdapterPropertiesAssemblyInfo.cs
     目录           0  2018-11-22 20:15  MUDBUS24415425NModbus_1.6.0.0-sourcesourcesrcModbus
     目录           0  2018-11-22 20:15  MUDBUS24415425NModbus_1.6.0.0-sourcesourcesrcModbus.IntegrationTests
     文件         907  2008-03-10 18:54  MUDBUS24415425NModbus_1.6.0.0-sourcesourcesrcModbus.IntegrationTestsApp.config
     目录           0  2018-11-22 20:15  MUDBUS24415425NModbus_1.6.0.0-sourcesourcesrcModbus.IntegrationTestsCustomMessages
     文件        2237  2008-03-10 18:54  MUDBUS24415425NModbus_1.6.0.0-sourcesourcesrcModbus.IntegrationTestsCustomMessagesCustomReadHoldingRegistersRequest.cs
     文件        1839  2008-03-10 18:54  MUDBUS24415425NModbus_1.6.0.0-sourcesourcesrcModbus.IntegrationTestsCustomMessagesCustomReadHoldingRegistersResponse.cs
     文件        2838  2008-03-10 18:54  MUDBUS24415425NModbus_1.6.0.0-sourcesourcesrcModbus.IntegrationTestsCustomMessagesCustomWriteMultipleRegistersRequest.cs
     文件        1982  2008-03-10 18:54  MUDBUS24415425NModbus_1.6.0.0-sourcesourcesrcModbus.IntegrationTestsCustomMessagesCustomWriteMultipleRegistersResponse.cs
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