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flightgear/src/Network/ATC-Outputs.hxx

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// ATC-Outputs.hxx -- Translate FGFS properties into ATC hardware outputs
//
// Written by Curtis Olson, started November 2004.
//
// Copyright (C) 2004 Curtis L. Olson - http://www.flightgear.org/~curt
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
// published by the Free Software Foundation; either version 2 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
//
// $Id$
#ifndef _FG_ATC_OUTPUTS_HXX
#define _FG_ATC_OUTPUTS_HXX
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <Main/fg_props.hxx>
#define ATC_RADIO_DISPLAY_BYTES 48
#define ATC_COMPASS_CH 5
#define ATC_STEPPER_HOME 0xC0
class FGATCOutput {
int is_open;
int board;
SGPath config;
int lock_fd;
int lamps_fd;
int radio_display_fd;
int stepper_fd;
char lamps_file[256];
char radio_display_file[256];
char stepper_file[256];
unsigned char radio_display_data[ATC_RADIO_DISPLAY_BYTES];
SGPropertyNode *lamps_out_node;
SGPropertyNode *radio_display_node;
SGPropertyNode *steppers_node;
void init_config();
bool do_lamps();
bool do_radio_display();
bool do_steppers();
// hardwired stepper motor code
float compass_position;
public:
// Constructor: The _board parameter specifies which board to
// reference. Possible values are 0 or 1. The _config_file
// parameter specifies the location of the output config file (xml)
FGATCOutput( const int _board, const SGPath &_config_file );
// Destructor
~FGATCOutput() { }
// need to pass in atc hardware lock_fd so that the radios and
// lamps can be blanked and so that the compass can be homed.
bool open( int lock_fd );
// process the hardware outputs. This code assumes the calling
// layer will lock the hardware.
bool process();
bool close();
};
#endif // _FG_ATC_OUTPUTS_HXX