private uint GetValue(List <byte> data, VdfByteOrder byteOrder, int startBit, int bitLen)
{
switch (byteOrder)
{
default:
case VdfByteOrder.Intel:
return(ValueUtils.GetValueIntel(data, startBit, bitLen));
case VdfByteOrder.Motorola:
return(ValueUtils.GetValueMotorola(data, startBit, bitLen));
}
}
private static void decodeByValue(List <byte> data, VdfSignal signal, string value)
{
// 按照值的方式
uint decodeValue = signal.VdfValueDesc.Decode(value);
switch (signal.ByteOrder)
{
case VdfByteOrder.Intel:
ValueUtils.SetValueIntel(data, signal.StartBit, signal.BitLen, decodeValue);
break;
case VdfByteOrder.Motorola:
ValueUtils.SetValueMotorola(data, signal.StartBit, signal.BitLen, decodeValue);
break;
default:
throw new VdfException("Invalid Byte Order: " + signal.ByteOrder.ToString());
}
}
public static void ForEachByte(List <byte> data, VdfSignal signal,
Action <int, int, byte> action)
{
switch (signal.ByteOrder)
{
case VdfByteOrder.Intel:
ValueUtils.ForEachByteIntel(data, signal.StartBit, signal.BitLen,
action);
break;
case VdfByteOrder.Motorola:
ValueUtils.ForEachByteMotorola(data, signal.StartBit, signal.BitLen,
action);
break;
default:
throw new ArgumentException("VdfEncoder.ForEachByte: " +
"Invalid Signal ByteOrder");
}
}
// 对信号的值进行编码
// 信号值从data中获取
public static string Encode(List <byte> data, VdfSignal signal, bool withUnit = false)
{
if (signal.VdfValueDesc == null)
{
throw new VdfException("Signal Value Desc cannot be null");
}
string ret;
// 使用两个编码接口，
// 因为BCD编码使用传整形值是不能满足需求的，必须传递字节数组，并且需要直到，字节序
try
{
uint value = 0;
switch (signal.ByteOrder)
{
case VdfByteOrder.Intel:
value = ValueUtils.GetValueIntel(data, signal.StartBit, signal.BitLen);
break;
case VdfByteOrder.Motorola:
value = ValueUtils.GetValueMotorola(data, signal.StartBit, signal.BitLen);
break;
default:
throw new VdfException("Invalid Byte Order: " + signal.ByteOrder.ToString());
}
ret = signal.VdfValueDesc.Encode(value, withUnit);
}
catch (NotImplementedException)
{
ret = signal.VdfValueDesc.Encode(data, signal, withUnit);
}
return(ret);
}
