controller.hpp

00001 /**
00002  * Copyright (c) 2012, Roy van Dam <roy@vandam-innovations.com>
00003  * All rights reserved.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions are met:
00007  *
00008  * 1. Redistributions of source code must retain the above copyright notice, this
00009  *    list of conditions and the following disclaimer.
00010  * 2. Redistributions in binary form must reproduce the above copyright notice,
00011  *    this list of conditions and the following disclaimer in the documentation
00012  *    and/or other materials provided with the distribution.
00013  *
00014  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
00015  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
00016  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
00017  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
00018  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
00019  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
00020  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
00021  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
00022  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00023  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00024  */
00025 
00026 #ifndef _CONTROLLER_HPP_
00027 #define _CONTROLLER_HPP_
00028 
00029 #include <cstdio>
00030 #include <cstring>
00031 #include <vector>
00032 
00033 #include "mbed.h"
00034 
00035 #include "NetworkAPI/select.hpp"
00036 #include "NetworkAPI/tcp/socket.hpp"
00037 
00038 class Controller
00039 {
00040     protected:
00041         typedef std::vector<DigitalOut *> DigitalOutputList;
00042         typedef std::vector<DigitalIn  *> DigitalInputList;
00043         
00044         struct {
00045             DigitalOutputList output;
00046             DigitalInputList input;
00047         } _io;
00048                     
00049         struct {
00050             network::tcp::Socket server;
00051             network::tcp::Socket client;
00052         } _network;
00053         
00054         enum Command {
00055             C_None,
00056             C_Read,
00057             C_Write
00058         };
00059         
00060         enum ParseState {
00061             S_Init,
00062             S_Index,
00063             S_Execute,
00064         };
00065         
00066         enum ParseError {
00067             E_None              =  0,
00068             E_Internal          = -1,
00069             E_InvalidCommand    = -2,
00070             E_InvalidFormat     = -3,
00071             E_UnknownIndex      = -4,
00072             E_InvalidValue      = -5
00073         };
00074 
00075     public:
00076         ~Controller();
00077         
00078         int start(int port = 61850, int max_pending = 1);
00079         int stop();
00080         
00081         int dispatch();
00082                 
00083         int addOutput(DigitalOut *output);
00084         DigitalOut *getOutput(size_t index);
00085         
00086         int addInput(DigitalIn *input);
00087         DigitalIn *getInput(size_t index);
00088         
00089     protected:
00090         bool _outputExists(DigitalOut *output);
00091         bool _inputExists(DigitalIn *input);
00092         
00093         int _parseCommand(network::Buffer &buffer);
00094 };
00095 
00096 #endif // _CONTROLLER_HPP_