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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Runtime.InteropServices;
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namespace USB2XXX
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{
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class USB2LIN
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{
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//定义函数返回错误代码
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public const Int32 LIN_SUCCESS = (0); //函数执行成功
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public const Int32 LIN_ERR_NOT_SUPPORT = (-1); //适配器不支持该函数
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public const Int32 LIN_ERR_USB_WRITE_FAIL = (-2); //USB写数据失败
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public const Int32 LIN_ERR_USB_READ_FAIL = (-3); //USB读数据失败
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public const Int32 LIN_ERR_CMD_FAIL = (-4); //命令执行失败
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public const Int32 LIN_ERR_CH_NO_INIT = (-5); //该通道未初始化
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public const Int32 LIN_ERR_READ_DATA = (-6); //LIN读数据失败
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//LIN和校验模式
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public const Byte LIN_CHECK_MODE_STD = 0;
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public const Byte LIN_CHECK_MODE_EXT = 1;
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public const Byte LIN_CHECK_MODE_NONE = 2;
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//BREAK位数定义
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public const Byte LIN_BREAK_BITS_10 = 0x00;
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public const Byte LIN_BREAK_BITS_11 = 0x20;
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//定义主从模式
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public const Byte LIN_MASTER = 1;
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public const Byte LIN_SLAVE = 0;
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//定义从机操作模式
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public const Byte LIN_SLAVE_WRITE = 0;
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public const Byte LIN_SLAVE_READ = 1;
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//定义初始化LIN的数据类型
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[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
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public struct LIN_CONFIG
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{
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public UInt32 BaudRate; //波特率,最大20K
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public Byte CheckMode; //校验模式，0-标准校验模式，1-增强校验模式（包含PID）
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public Byte MasterMode; //主从模式，0-从模式，1-主模式
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public Byte BreakBits; //Break长度，0x00-10bit,0x20-11bit
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}
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//LIN数据收发帧格式定义
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[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
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public struct LIN_MSG
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{
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[MarshalAs(UnmanagedType.U1)]
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public Byte ID; //ID，取值范围0~0x3F
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[MarshalAs(UnmanagedType.U1)]
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public Byte DataLen; //发送数据时，代表发送数据的长度，不含校验数据，接收数据时，数据的长度，包含校验数据
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 9, ArraySubType = UnmanagedType.I1)]
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public Byte[] Data; //数据存储区
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}
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//USB2LIN相关函数定义
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[DllImport("USB2XXX.dll")]
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public static extern Int32 LIN_Init(Int32 DevHandle,Byte LINIndex,ref LIN_CONFIG pConfig);
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[DllImport("USB2XXX.dll")]
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public static extern Int32 LIN_Write(Int32 DevHandle,Byte LINIndex,LIN_MSG[] pLINMsg,Int32 Len);
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[DllImport("USB2XXX.dll")]
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public static extern Int32 LIN_Read(Int32 DevHandle, Byte LINIndex, IntPtr pLINMsg, Int32 Len);
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[DllImport("USB2XXX.dll")]
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public static extern Int32 LIN_SlaveSetIDMode(Int32 DevHandle,Byte LINIndex,Byte IDMode,LIN_MSG[] pLINMsg,Int32 Len);
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[DllImport("USB2XXX.dll")]
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public static extern Int32 LIN_SlaveGetData(Int32 DevHandle,Byte LINIndex,IntPtr pLINMsg);
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}
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}
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