/// <summary>
/// 从message中检索MultiplexedSignal
/// 如果存在多个，则只返回第一个
/// </summary>
/// <param name="signal">搜索结果</param>
/// <returns>搜索是否成功</returns>
public Boolean SearchMultiplexerSignalFormMessage(out DBCSignal signal)
{
var result = false;
signal = null;
foreach (var item in this.Signals)
{
if (item.MultiplexerIndicator == MultiplexerIndicator.MultiplexedSignal)
{
signal = item;
result = true;
break;
}
}
return(result);
}
/// <summary>
/// 根据Name从Message检索Signal
/// 如果存在多个匹配则返回第一个匹配
/// </summary>
/// <param name="name">Signal name</param>
/// <param name="signal">检索结果</param>
/// <returns>是否成功</returns>
public Boolean SearchSignalByName(String name, out DBCSignal signal)
{
var result = false;
signal = null;
foreach (var item in this.Signals)
{
if (item.SignalName == name)
{
signal = item;
result = true;
break;
}
}
return(result);
}
/// <summary>
/// 根据原始数据解析Signal数据
/// </summary>
/// <param name="signal">需要解析的signal</param>
/// <param name="data">原始数据</param>
/// <param name="valueString">解析值</param>
/// <returns>是否成功</returns>
public static Boolean GetDbcData(ref DBCSignal signal, Byte[] data, out String valueString)
{
valueString = "";
UInt16 start;
UInt64 tempUInt64;
if (signal.MultiplexerIndicator == MultiplexerIndicator.MultiplexedSignals)
{
DBCSignal tempSignal;
signal.Message.SearchMultiplexerSignalFormMessage(out tempSignal);
if (tempSignal != null)
{
String tempResult;
GetDbcData(ref tempSignal, data, out tempResult);
if (tempSignal.Data != signal.MultiplexerSwitchValue)
{
return(false);
}
}
else
{
return(false);
}
}
if (signal.ByteOrder == ByteOrder.Motorola)
{
start = (UInt16)(63 - (7 - signal.StartPosition % 8) - signal.StartPosition / 8 * 8);
UInt64 temp = 0;
for (Int32 i = 0; i < 8; i++)
{
temp <<= 8;
temp |= data[i];
}
tempUInt64 = temp << (63 - start);
tempUInt64 = tempUInt64 >> (63 - signal.SignalSize + 1);
}
else
{
start = signal.StartPosition;
UInt64 temp = 0;
for (Int32 i = 8; i > 0; i--)
{
temp <<= 8;
temp |= data[i];
}
tempUInt64 = temp << (63 - start - signal.SignalSize + 1);
tempUInt64 = tempUInt64 >> (63 - signal.SignalSize + 1);
}
Double value = signal.Factor * tempUInt64 + signal.Offset;
String tempString = value.ToString();
Boolean isDecimals = tempString.Contains(".");
if (!isDecimals)
{
UInt32 tempValue = (UInt32)value;
Int32 size = signal.Values.Count;
if (size > 0)
{
for (Int32 i = 0; i < size; i++)
{
foreach (var item in signal.Values)
{
if (item.Value == tempValue)
{
valueString = item.Key;
signal.Data = item.Value;
return(true);
}
}
}
}
}
String factorString = signal.Factor.ToString();
String offsetString = signal.Offset.ToString();
var precision = ((factorString.Length - factorString.LastIndexOf(".") - 1) >
(offsetString.Length - offsetString.LastIndexOf(".") - 1)) ?
(factorString.Length - factorString.LastIndexOf(".") - 1) :
(offsetString.Length - offsetString.LastIndexOf(".") - 1);
if (precision == -1)
{
precision = 0;
}
String formatString = "0.".PadRight(2 + precision, '0');
valueString = String.Format("{0:" + formatString + "}", value);
signal.Data = value;
return(true);
}