GNU Radio C++ API
ppio.h
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1 /* -*- c++ -*- */
2 /*
3  * Copyright 2001,2003 Free Software Foundation, Inc.
4  *
5  * This file is part of GNU Radio
6  *
7  * GNU Radio is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 3, or (at your option)
10  * any later version.
11  *
12  * GNU Radio is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with GNU Radio; see the file COPYING. If not, write to
19  * the Free Software Foundation, Inc., 51 Franklin Street,
20  * Boston, MA 02110-1301, USA.
21  */
22 
23 #ifndef INCLUDED_PPIO_H
24 #define INCLUDED_PPIO_H
25 
26 #include <gr_core_api.h>
27 #include <boost/shared_ptr.hpp>
28 
29 class ppio;
31 
32 
33 /*!
34  * \brief abstract class that provides low level access to parallel port bits
35  * \ingroup hardware
36  */
37 
39  public:
40  ppio () {}
41  virtual ~ppio ();
42 
43  virtual void write_data (unsigned char v) = 0;
44  virtual unsigned char read_data () = 0;
45  virtual void write_control (unsigned char v) = 0;
46  virtual unsigned char read_control () = 0;
47  virtual unsigned char read_status () = 0;
48 
49  virtual void lock () = 0;
50  virtual void unlock () = 0;
51 };
52 
53 /*!
54  * \brief Factory method.
55  *
56  * Split out from class to make life easier for SWIG
57  */
58 
59 GR_CORE_API ppio_sptr make_ppio (int which_pp);
60 
61 
62 #endif /* INCLUDED_PPIO_H */
63