/// <summary>
/// 处理串口传入的数据
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void OnDataReceived(object sender, DataTransEventArgs e)
{
byte[] temp = new byte[FRESHCMDCHECKBYTELENGTH];
//-32768 ~ 32767在此范围的值，当传过来的值超过32767时一定是负值，此时要异或0xFFFF后再加1补码是为负数的绝对值
// { DP D5 D4 D3 D2 D1 UNIT }\{ E R R O R 0 1 }\{ E R R O R 0 2 }\{ E R R O R 0 3 }
try
{
m_ReadBuffer.AddRange(e.EventData);
for (int iLoop = 0; iLoop < m_ReadBuffer.Count; iLoop++)
{
System.Diagnostics.Debug.Write(m_ReadBuffer[iLoop].ToString("X") + " ");
}
System.Diagnostics.Debug.WriteLine("");
PressureGaugeDataEventArgs args = Analyze(m_ReadBuffer);
if (args != null && PressureGaugeDataRecerived != null)
{
PressureGaugeDataRecerived(this, args);
}
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.Message);
}
}
public PressureGaugeDataEventArgs(PressureGaugeDataEventArgs data)
{
this.Unit = data.Unit;
this.PressureValue = data.PressureValue;
this.ErrorMessage = data.ErrorMessage;
}
private PressureGaugeDataEventArgs Analyze(List <byte> eventData)
{
PressureGaugeDataEventArgs args = null;
if (eventData.Count < FRESHCMDCHECKBYTELENGTH)
{
return(null);
}
byte[] buffer = new byte[FRESHCMDCHECKBYTELENGTH];
bool bFind = false;
while (eventData.Count >= FRESHCMDCHECKBYTELENGTH)
{
if (eventData[0] != 0x7B)
{
eventData.RemoveAt(0);
continue;
}
else
{
if (eventData[FRESHCMDCHECKBYTELENGTH - 1] != 0x7D)
{
eventData.RemoveAt(0);
continue;
}
else
{
bFind = true;
eventData.CopyTo(0, buffer, 0, FRESHCMDCHECKBYTELENGTH);
eventData.RemoveRange(0, FRESHCMDCHECKBYTELENGTH);
}
}
}
if (bFind)
{
//小数点错误
if (buffer[1] > 0x33 || buffer[1] < 0x30)
{
return(null);
}
//单位错误
if (buffer[7] > 0x37 || buffer[1] < 0x30)
{
return(null);
}
for (int iLoop = 2; iLoop <= 6; iLoop++)
{
if (buffer[iLoop] < 0x30 || buffer[iLoop] > 0x39)
{
return(null);
}
}
int D5 = (buffer[2] - 0x30) * 10000;
int D4 = (buffer[3] - 0x30) * 1000;
int D3 = (buffer[4] - 0x30) * 100;
int D2 = (buffer[5] - 0x30) * 10;
int D1 = (buffer[6] - 0x30);
int total = D1 + D2 + D3 + D4 + D5;
if (total > 0xFFFF) //错误数字
{
return(null);
}
ushort num = 0;
float sum = 0;
if (total > 32767) //负数
{
num = (ushort)total;
num = (ushort)(num ^ 0xFFFF + 0x0001);
sum = -1 * num;
}
else
{
num = (ushort)total;
sum = num;
}
switch (buffer[1])
{
case 0x31:
sum *= 0.1f;
break;
case 0x32:
sum *= 0.01f;
break;
case 0x33:
sum *= 0.001f;
break;
}
PressureUnit unit = (PressureUnit)(buffer[7] - 0x30);
args = new PressureGaugeDataEventArgs(unit, sum);
return(args);
}
else
{
return(null);
}
}
private PressureGaugeDataEventArgs Analyze(byte[] eventData)
{
PressureGaugeDataEventArgs args = null;
if (eventData.Length != FRESHCMDCHECKBYTELENGTH)
{
return(null);
}
//开始和结束字符错误
if (eventData[0] != 0x7B || eventData[FRESHCMDCHECKBYTELENGTH - 1] != 0x7D)
{
return(null);
}
//小数点错误
if (eventData[1] > 0x33 || eventData[1] < 0x30)
{
return(null);
}
//单位错误
if (eventData[7] > 0x37 || eventData[1] < 0x30)
{
return(null);
}
for (int iLoop = 2; iLoop <= 6; iLoop++)
{
if (eventData[iLoop] < 0x30 || eventData[iLoop] > 0x39)
{
return(null);
}
}
int D5 = (eventData[2] - 0x30) * 10000;
int D4 = (eventData[3] - 0x30) * 1000;
int D3 = (eventData[4] - 0x30) * 100;
int D2 = (eventData[5] - 0x30) * 10;
int D1 = (eventData[6] - 0x30);
int total = D1 + D2 + D3 + D4 + D5;
if (total > 0xFFFF) //错误数字
{
return(null);
}
ushort num = 0;
float sum = 0;
if (total > 32767) //负数
{
num = (ushort)total;
num = (ushort)(num ^ 0xFFFF + 0x0001);
sum = -1 * num;
}
else
{
num = (ushort)total;
sum = num;
}
switch (eventData[1])
{
case 0x31:
sum *= 0.1f;
break;
case 0x32:
sum *= 0.01f;
break;
case 0x33:
sum *= 0.001f;
break;
}
PressureUnit unit = (PressureUnit)(eventData[7] - 0x30);
args = new PressureGaugeDataEventArgs(unit, sum);
return(args);
}