public bool ReadCanMsg(ref uint ID, out byte[] Msg)
{
if (_IsOpen)
{
pt = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(VCI_CAN_OBJ)));
Marshal.WriteByte(pt, 0x00);
uint Cnt = ZLGBasic.VCI_Receive(m_DevType, m_DevIndex, m_CanIndex, pt, 1, 0);
if (Cnt > 0)
{
VCI_CAN_OBJ obj = (VCI_CAN_OBJ)Marshal.PtrToStructure((IntPtr)((UInt32)pt), typeof(VCI_CAN_OBJ));
ID = obj.ID;
Msg = new byte[obj.DataLen];
Array.Copy(obj.Data, Msg, obj.DataLen);
Marshal.FreeHGlobal(pt);
return(true);
}
Marshal.FreeHGlobal(pt);
}
ID = 0;
Msg = new byte[8];
return(false);
}
public bool WriteCanMsg(uint ID, byte[] Msg)
{
//重试的次数
int retrycnt = 0;
if (_IsOpen)
{
try
{
VCI_CAN_OBJ CanMsg = new VCI_CAN_OBJ();
CanMsg.ID = Globals._NODE_ | ID;
CanMsg.SendType = 0; //0:正常发送 1:单次发送 2:自发自收 3:单次自发自收
CanMsg.RemoteFlag = 0; //0:数据帧 1: 远程帧
CanMsg.ExternFlag = 0; //0:标准帧 1:扩展帧
CanMsg.DataLen = (byte)Msg.Length;
CanMsg.Data = new byte[8];
Array.Copy(Msg, CanMsg.Data, CanMsg.DataLen);
VCI_ERR_INFO ErrorInfo = new VCI_ERR_INFO();
VCI_CAN_STATUS Vcs = new VCI_CAN_STATUS();
do
{
if (ZLGBasic.VCI_Transmit(m_DevType, m_DevIndex, m_DevIndex, ref CanMsg, 1) == ZLGBasic.STATUS_OK)
{
return(true);
}
else
{
retrycnt++;
ZLGBasic.VCI_ReadErrInfo(m_DevType, m_DevIndex, m_CanIndex, ref ErrorInfo);
ZLGBasic.VCI_ReadCANStatus(m_DevType, m_DevIndex, m_CanIndex, ref Vcs);
//写总线异常日志
Thread.Sleep(10);
}
} while (retrycnt < 3);
}
catch (Exception ex)
{
LogHelper.WriteLog(ex.Message);
}
}
return(false);
}
private void Dispose(bool fromDestructor)
{
if (_IsOpen)
{
ZLGBasic.VCI_CloseDevice(m_DevType, m_DevIndex);
//Marshal.FreeHGlobal(pt);
}
if (!fromDestructor)
{
GC.SuppressFinalize(this);
}
}
private bool OpenUsbCan()
{
if (ZLGBasic.VCI_OpenDevice(m_DevType, m_DevIndex, 0) != ZLGBasic.STATUS_ERR)
{
VCI_INIT_CONFIG Cfg = new VCI_INIT_CONFIG();
Cfg.AccCode = 0x00000000; //验收码
Cfg.AccMask = 0xFFFFFFFF; //验收屏蔽码
Cfg.Filter = 1; //滤波方式 1: 单滤波 0: 双滤波
Cfg.Mode = 0; //0:正常模式 1:只听模式
Cfg.Timing0 = 0x00; //通讯速率 1Mbps
Cfg.Timing1 = 0x14;
//判断CAN是否能初始化
if (ZLGBasic.VCI_InitCAN(m_DevType, m_DevIndex, m_CanIndex, ref Cfg) == ZLGBasic.STATUS_OK)
{
ZLGBasic.VCI_ClearBuffer(m_DevType, m_DevIndex, m_CanIndex);
return(ZLGBasic.VCI_StartCAN(m_DevType, m_DevIndex, m_CanIndex) == ZLGBasic.STATUS_OK);
}
}
return(false);
}
