/// <summary>
/// Use this to retrieve a sensor's value in the units of your choice.
/// </summary>
/// <param name="sensorId">PlxSensorId returned from PushByte()</param>
/// <param name="units">Desired units.</param>
/// <returns>The sensor's value in the desired units.</returns>
public double GetValue(PlxSensorId sensorId, PlxSensorUnits units)
{
int rawValue;
lock (this.dictionaryLock)
{
if (!this.results.ContainsKey(sensorId))
{
return(0);
}
rawValue = this.results[sensorId];
}
double result;
if (units == PlxSensorUnits.Raw)
{
result = rawValue;
}
else
{
result = PlxParser.ConvertValue(sensorId.Sensor, units, rawValue);
}
return(result);
}
/// <summary>
/// FxCop recommended doing this...
/// </summary>
public override bool Equals(object obj)
{
if (obj is PlxSensorId)
{
PlxSensorId that = (PlxSensorId)obj;
if ((this.Sensor == that.Sensor) &&
(this.Instance == that.Instance))
{
return(true);
}
}
return(false);
}
/// <summary>
/// Call this for each byte received from the PLX chain.
/// </summary>
/// <param name="b">Received byte.</param>
/// <returns>If a complete packet was received, this will return the
/// PlxSensorId of the sensor whose data has been updated. Call the
/// GetValue() method to retrieve the value.</returns>
public PlxSensorId?PushByte(byte b)
{
if (b == 0x80)
{
this.state = ParserState.ExpectingFirstHalfOfSensorType;
return(null);
}
if (b == 0x40)
{
this.state = ParserState.ExpectingStart;
return(null);
}
switch (this.state)
{
case ParserState.ExpectingFirstHalfOfSensorType:
this.partialValue = b;
this.state = ParserState.ExpectingSecondHalfOfSensorType;
break;
case ParserState.ExpectingSecondHalfOfSensorType:
this.sensorType = (PlxSensorType)((this.partialValue << 6) | b);
this.state = ParserState.ExpectingInstance;
break;
case ParserState.ExpectingInstance:
this.instance = b;
this.state = ParserState.ExpectingFirstHalfOfValue;
break;
case ParserState.ExpectingFirstHalfOfValue:
this.partialValue = b;
this.state = ParserState.ExpectingSecondHalfOfValue;
break;
case ParserState.ExpectingSecondHalfOfValue:
int rawValue = (this.partialValue << 6) | b;
//double convertedValue = PlxParser.ConvertValue(this.sensorType, i);
PlxSensorId id = new PlxSensorId(this.sensorType, this.instance);
lock (this.dictionaryLock)
{
this.results[id] = rawValue;
}
this.state = ParserState.ExpectingFirstHalfOfSensorType;
return(id);
}
return(null);
}
