/// <summary>
/// Registers specified custom function.
/// </summary>
/// <typeparam name="TRequest">The type of the modbus request message.</typeparam>
/// <param name="functionCode">The function code to provide the implementation for.</param>
/// <param name="applyRequest">The delegate to apply the request to the DataStore and return the appropriate response.</param>
/// <exception cref="ArgumentException">Custom function registration already exists.</exception>
public void RegisterCustomFunction <TRequest>(byte functionCode, Func <TRequest, DataStore, IModbusMessage> applyRequest)
where TRequest : IModbusMessage, new()
{
if (applyRequest == null)
{
throw new ArgumentNullException("applyRequest");
}
if (_customMessages.ContainsKey(functionCode))
{
throw new ArgumentException("A custom function already exists with the specified function code. You must unregister it first.", "functionCode");
}
// CONSIDER only allowing true user-defined function codes, Modbus defines 65-72 and 100-110 as user-defined function codes.
// wrap in more generic delegate type
Func <IModbusMessage, DataStore, IModbusMessage> wrapper = (message, dataStore) => applyRequest((TRequest)message, dataStore);
_customMessages[functionCode] = new CustomMessageInfo(typeof(TRequest), wrapper);
}
internal bool TryGetCustomMessageInfo(byte functionCode, out CustomMessageInfo messageInfo)
{
return(_customMessages.TryGetValue(functionCode, out messageInfo));
}
