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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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//注意：使用这些函数需要1.8.4及以上的固件才支持
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namespace USB2XXX
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{
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class USB2MELIBU
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{
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//定义函数返回错误代码
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public const int MELIBU_SUCCESS = (0); //函数执行成功
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public const int MELIBU_ERR_NOT_SUPPORT = (-1); //适配器不支持该函数
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public const int MELIBU_ERR_USB_WRITE_FAIL = (-2); //USB写数据失败
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public const int MELIBU_ERR_USB_READ_FAIL = (-3); //USB读数据失败
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public const int MELIBU_ERR_CMD_FAIL = (-4); //命令执行失败
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public const int MELIBU_ERR_PARAMETER = (-5); //参数错误
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//命令值宏定义
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public const byte MELIBU_TX = 0; //主机发送数据给从机
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public const byte MELIBU_RX = 1; //主机向从机读数据
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//消息状态定义
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public const byte MELIBU_STATUS_NACK = 0x01;//写无应答(非广播帧)
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public const byte MELIBU_STATUS_RNRES = 0x02;//读数据无应答
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public const byte MELIBU_STATUS_ECRC = 0x04;//CRC校验错误
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public const byte MELIBU_STATUS_FERR = 0x08;//帧异常，实际字节数跟规定的不匹配
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public const byte MELIBU_STATUS_DLEN = 0x10;//实际数据字节数跟帧头字节数不匹配
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public const byte MELIBU_STATUS_PERR = 0x20;//P0 P1错误
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//ELINS帧类型定义
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[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
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public struct MELIBU_MSG
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{
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[MarshalAs(UnmanagedType.U1)]
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public byte DataLen; //Data域中有效数据字节数
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[MarshalAs(UnmanagedType.U1)]
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public byte BreakBits; //发送同步间隔宽度，一般为13
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[MarshalAs(UnmanagedType.U1)]
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public byte Status; //当前帧状态指示，接收时有效，指示帧异常状态
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[MarshalAs(UnmanagedType.U1)]
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public byte ACKValue; //应答值，发送数据时存储对方应答数据
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[MarshalAs(UnmanagedType.U1)]
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public byte MsgMode; //0-普通模式，1-扩展模式
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[MarshalAs(UnmanagedType.U1)]
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public byte TimeStampHigh; //时间戳高位
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[MarshalAs(UnmanagedType.U2)]
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public short MsgSendTimes; //当前帧发送次数
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[MarshalAs(UnmanagedType.U4)]
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public uint TimeStamp; //接收帧时为时间戳低位，单位为10us，发送数据时为跟下一帧的间隔时间，单位为微秒(us)
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[MarshalAs(UnmanagedType.U2)]
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public ushort ID; //ID值，可以通过调用 @ref MeLiBu_GetID 函数获取
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[MarshalAs(UnmanagedType.U2)]
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public ushort Crc16; //发送数据时不用填，底层会自动计算，接收时代表接收到的CRC值
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 128, ArraySubType = UnmanagedType.U1)]
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public byte[] Data; //数据存储数组，里面包含的有效数据字节数由DataLen决定
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}
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[DllImport("USB2XXX.dll")]
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public static extern int MeLiBu_Init(int DevHandle, byte Index, uint BaudRate, byte MasterMode, byte ResEnable);
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[DllImport("USB2XXX.dll")]
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public static extern int MeLiBu_MasterStartSch(int DevHandle, byte Index, MELIBU_MSG[] pMsg, uint MsgLen, uint SendTimes, byte ReadBackFlag);
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[DllImport("USB2XXX.dll")]
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public static extern int MeLiBu_GetMsg(int DevHandle, byte Index, IntPtr pMsg, uint BufferSize);
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[DllImport("USB2XXX.dll")]
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public static extern ushort MeLiBu_GetID(byte MsgMode, byte SlaveAddr, byte RT, byte F, byte dlc,byte InstrExt);
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[DllImport("USB2XXX.dll")]
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public static extern int MeLiBu_MasterStopSch(int DevHandle, byte Index);
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[DllImport("USB2XXX.dll")]
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public static extern int MeLiBu_Stop(int DevHandle, byte Index);
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[DllImport("USB2XXX.dll")]
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public static extern int MeLiBu_GetStartTime(int DevHandle, byte Index);
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}
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}
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