public override string Read(SerialPort serialPort)
{
int tempdatalenth = serialPort.BytesToRead;
byte[] tempbytes = new byte[tempdatalenth];
serialPort.Read(tempbytes, 0, tempdatalenth);
return(ConvertFrom.ArrayToHexString(tempbytes));
}
unsafe protected string ReceiveData(UInt32 FilterID, int timeout, uint deviceType, uint deviceIndex, uint cANIndex)
{
string dataStrList = "读取失败！";
List <string> dataStringList = new List <string>();
var cancelTokenSource = new CancellationTokenSource(timeout);
if (IsOpen) //是否打开CAN
{
List <uint> Data_Frame = new List <uint>();
while (!cancelTokenSource.IsCancellationRequested)//设置读取超时
{
//uint num = VCI_GetReceiveNum(deviceType, deviceIndex, cANIndex);
uint con_maxlen = 100;
int size = Marshal.SizeOf(typeof(VCI_CAN_OBJ)); //获取结构体占用空间大小
IntPtr pt = Marshal.AllocHGlobal(size * (Int32)con_maxlen); //声明一个同样大小的空间的指针或句柄
UInt32 result = VCI_Receive(deviceType, deviceIndex, cANIndex, pt, con_maxlen, 100); //返回最大100幁数据
for (UInt32 i = 0; i < result; i++)
{
VCI_CAN_OBJ obj = (VCI_CAN_OBJ)Marshal.PtrToStructure((IntPtr)((uint)pt + i * size), typeof(VCI_CAN_OBJ)); //将结构体放到这个空间中
if (obj.ID == FilterID) //判断是否为过滤的ID
{
if (obj.RemoteFlag == 0) //判断是否为远程幁
{
//Data_Frame.Add(obj.ID);
byte len = (byte)(obj.DataLen % 9);
byte j = 0;
if (j++ < len)
{
for (int d = 0; d < len; d++)
{
Data_Frame.Add(obj.Data[d]);
}
Data_Frame.RemoveRange(0, 2);
}
}
dataStrList = ConvertFrom.ArrayToHexString(Data_Frame.ToArray());
}
}
#region old
//dataStr = "帧ID: ";
//dataStr = Convert.ToString(obj.ID, 16);
// if (obj.ID == FilterID)
// {
// if (obj.RemoteFlag == 0)
// {
// //dataStr += " 数据: ";
// byte len = (byte)(obj.DataLen % 9);
// byte j = 0;
// if (j++ < len)
// {
// for (int d = 0; d < len; d++)
// {
// dataStr += " " + string.Format("{0:X2}", obj.Data[d]);//01 00 00 00 00 00 00 08
// }
// }
// dataStringList.Add(dataStr.ToUpper());
// }
// }
// //Console.WriteLine(dataStr.ToUpper());
//}
//if (dataStringList.Count > 0)
//{
// foreach (var item in dataStringList)
// {
// dataStrList += item + "\r\n";
// }
// return dataStrList;
//}//判断是否有 指定的数据
//else
//{
// dataStringList = null;
// dataStrList = "";
// //ReceiveData(FilterID, timeout);
// return $"CAN1 读取帧ID: {Convert.ToString(FilterID, 16).ToUpper()} 失败！";
//}
#endregion
}
return(dataStrList);
}
return(dataStrList);
//return $"CAN1 读取帧ID: {Convert.ToString(FilterID, 16).ToUpper()} 失败！";
}