public override byte[] ToByteArray()
{
var stream = new MemoryStream();
stream.WriteByte((byte)CommandId);
stream.WriteByte(FrameId);
var cmd = ((ATAttribute)atCommand.GetAttr()).ATCommand.ToCharArray();
stream.WriteByte((byte)cmd[0]);
stream.WriteByte((byte)cmd[1]);
if (hasValue)
{
var v = value.ToByteArray();
stream.Write(v, 0, v.Length);
}
return(stream.ToArray());
}