/// <summary>
/// 获取称重数值
/// </summary>
/// <param name="receiveData"></param>
/// <param name="paraInfo"></param>
/// <returns></returns>
public static double GetWeightData(string receiveData, ParaInfo paraInfo)
{
double retValue = 0;
try
{
receiveData = receiveData.Replace(" ", "");
byte[] receiveByte = StrCommon.GetByteArrayByHexStr(receiveData);
if (receiveByte.Length == paraInfo.ReceiveDataLength)//首先判断接收数据字节数长度是否匹配
{
string weightData = StrCommon.MidStrMain(receiveData, paraInfo.StartMark, paraInfo.EndMark);
if (!string.IsNullOrEmpty(weightData))
{
byte[] weightDataByte = StrCommon.GetByteArrayByHexStr(weightData);
if (weightDataByte.Length == paraInfo.WeightDataLength)
{
int retLength = weightDataByte.Length - paraInfo.WeightDataStartBit;
if (retLength > 0)
{
byte[] new_WeightDataByte = weightDataByte.Skip(paraInfo.WeightDataStartBit).Take(retLength).ToArray();
string retString;
if (paraInfo.WeightDataOrderMode == 0)//正序
{
retString = StrCommon.HexToStr(StrCommon.GetHexStrByByteArray(new_WeightDataByte));
}
else//反序
{
retString = StrCommon.HexToStrReverseOrder(StrCommon.GetHexStrByByteArray(new_WeightDataByte));
}
retValue = double.Parse(retString) * paraInfo.ConvertRatio;
}
}
else
{
Console.WriteLine("重量数据长度和配置重量数据长度不一致：" + weightData);
}
}
}
else
{
Console.WriteLine("接收数据长度和配置接收数据长度不一致：" + receiveData);
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
return(retValue);
}
public TransHelper()
{
ParaInfo para = new ParaInfo
{
ReceiveDataLength = 13, //接收字节总长度
StartMark = "2B", //开始字节 - 或
EndMark = "6B670D0A", //结束字节位置
WeightDataLength = 8, //重量数据总长度
WeightDataStartBit = 0, //起始位置
WeightDataOrderMode = 0, //0正序，1反序
ConvertRatio = 1, //转换系数
Port = 3,
Baudrate = 9600,
DataBit = 8,
CheckBit = 0,
StopBit = 1,
};
Dictionary <int, string> endMarkDic = StrCommon.GetDictByHexStr(para.EndMark);
Dictionary <int, string> startMarkDic = StrCommon.GetDictByHexStr(para.StartMark);
//SerialPortClient portClient = new SerialPortClient("COM" + para.Port, para.Baudrate.ToString(), para.CheckBit.ToString(), para.DataBit.ToString(), para.StopBit.ToString());
SerialPortClient portClient = new SerialPortClient();
portClient.ConnectionStatusChanged += SerialPort_ConnectionStatusChanged;
portClient.SetPort("COM" + para.Port, para.Baudrate.ToString(), para.CheckBit.ToString(), para.DataBit.ToString(), para.StopBit.ToString());
portClient.Connect();
portClient.MessageReceived += new Action <List <byte> >(datapool =>
{
//匹配数据帧，此处以2B为帧头、6B670D0A为帧尾
while (true)
{
try
{
if (datapool.Count < para.ReceiveDataLength - 1)
{
break;
}
if (datapool.Count > 1000)
{
datapool.RemoveRange(0, datapool.Count);
break;
}
if (datapool[0] == StrCommon.GetByteArrayByHexStr(startMarkDic.Count > 0 ? startMarkDic[0] : "")[0])
{
for (int d = 0; d < startMarkDic.Count; d++)
{
if (datapool[d] == StrCommon.GetByteArrayByHexStr(startMarkDic[d])[0])
{
datapool.RemoveAt(0);
}
}
continue;
}
int index = -1;//正确作法是记住上次最末尾的索引，避免重复匹配
for (int i = 0; i < datapool.Count - 1; i++)
{
if (datapool[i] == StrCommon.GetByteArrayByHexStr(endMarkDic.Count > 0 ? endMarkDic[0] : "")[0])
{
index = i;
break;
}
}
if (index != -1)
{
byte[] data = datapool.GetRange(0, index + endMarkDic.Count).ToArray();
datapool.RemoveRange(0, index + endMarkDic.Count);
//委托传值
string msg = StrCommon.GetHexStrByByteArray(data);
setWeightResultValue(GetWeightData(para.StartMark + msg, para));
}
else
{
break;
}
}
catch (Exception ex)
{
break;
}
}
#region back
////匹配数据帧，此处以2B为帧头、6B670D0A为帧尾
//if (datapool.Count > 12)
//{
// if (datapool[0] == StrCommon.GetByteArrayByHexStr(startMarkDic.Count > 0 ? startMarkDic[0] : "")[0])
// {
// for (int d = 0; d < startMarkDic.Count; d++)
// {
// if (datapool[d] == StrCommon.GetByteArrayByHexStr(startMarkDic[d])[0])
// {
// datapool.RemoveAt(0);
// }
// }
// }
// int index = -1;//正确作法是记住上次最末尾的索引，避免重复匹配
// for (int i = 0; i < datapool.Count - 1; i++)
// {
// if (datapool[i] == StrCommon.GetByteArrayByHexStr(endMarkDic.Count > 0 ? endMarkDic[0] : "")[0])
// {
// index = i;
// if (index != -1)
// {
// byte[] data = datapool.GetRange(0, index + endMarkDic.Count).ToArray();
// datapool.RemoveRange(0, index + endMarkDic.Count);
// //委托传值
// string msg = StrCommon.GetHexStrByByteArray(data);
// setWeightResultValue(GetWeightData(para.StartMark + msg, para));
// break;
// }
// }
// }
//}
#endregion
});
}