public BalanceDataEventArgs(BalanceDataEventArgs data)
: base(null)
{
Weight = data.Weight;
IsValid = data.IsValid;
PortName = data.PortName;
}
/// <summary>
///
/// </summary>
/// <param name="sender"></param>
/// <param name="args"></param>
public override void ReceiveData(object sender, DataTransmissionEventArgs args)
{
//从天平里读出的数据格式：53 20 44 20 20 20 31 38 2E 36 33 38 30 35 20 67 0D 0A
// 也有可能是：53 20 53 20 20 20 20 30 2E 30 30 30 30 30 20 67 0D 0A
//以0x53 0x20 0x44 0x20 0x20 0x20开头，0x0D 0x0A结束，并且带有单位0x20 0x67( g)
byte[] buffer = new byte[_detectByteLength];
lock (m_ReadBuffer)
{
m_ReadBuffer.AddRange(args.EventData);
if (m_ReadBuffer.Count >= _detectByteLength)
{
int endIndex = m_ReadBuffer.FindIndex(0, (x) => { return(x == 0x0A); });
if (endIndex < 0)
{
return;
}
else if (endIndex > 0 && endIndex != _detectByteLength - 1)
{
m_ReadBuffer.RemoveRange(0, endIndex + 1);
return;
}
else
{
m_ReadBuffer.CopyTo(0, buffer, 0, _detectByteLength);
m_ReadBuffer.RemoveRange(0, _detectByteLength);
}
}
else
{
return;
}
}
string weight = System.Text.Encoding.ASCII.GetString(buffer);
if (weight.Length < 16)
{
return;
}
//get the balance unit
string unitString = weight.Substring(14, 2);
string unit = string.Empty;
int iLoop = 0;
while (iLoop < 2)
{
if (unitString[iLoop] != 0x20)
{
unit += unitString[iLoop];
}
iLoop++;
}
WeightUint balanceUnit = WeightUint.g;
foreach (string s in Enum.GetNames(typeof(WeightUint)))
{
if (s.Equals(unit))
{
balanceUnit = (WeightUint)Enum.Parse(typeof(WeightUint), unit);
break;
}
}
int negative = weight[0] == '-' ? -1 : 1;
float weightValue = 0f;
bool bRet = false;
bRet = float.TryParse(weight.Substring(4, 10), out weightValue);
float weightGrams = 0f;
switch (balanceUnit)
{
case WeightUint.kg:
weightGrams = weightValue * 1000 * negative;
break;
case WeightUint.mg:
weightGrams = weightValue / 1000 * negative;
break;
case WeightUint.g:
weightGrams = weightValue * negative;
break;
default:
weightGrams = weightValue * negative;
break;
}
BalanceDataEventArgs balanceData = new BalanceDataEventArgs(weightGrams, bRet);
base.ReceiveData(sender, balanceData);
}