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477 cascade 1
/****************************************************************************
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 *   Copyright (C) 2009-2013 by Claas Anders "CaScAdE" Rathje               *
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 *   admiralcascade@gmail.com                                               *
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 *   Project-URL: http://www.mylifesucks.de/oss/c-osd/                      *
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 *                                                                          *
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 *   This program is free software; you can redistribute it and/or modify   *
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 *   it under the terms of the GNU General Public License as published by   *
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 *   the Free Software Foundation; either version 2 of the License.         *
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 *                                                                          *
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 *   This program is distributed in the hope that it will be useful,        *
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 *   but WITHOUT ANY WARRANTY; without even the implied warranty of         *
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 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          *
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 *   GNU General Public License for more details.                           *
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 *                                                                          *
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 *   You should have received a copy of the GNU General Public License      *
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 *   along with this program; if not, write to the                          *
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 *   Free Software Foundation, Inc.,                                        *
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 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.              *
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 ****************************************************************************/
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#ifndef _PPM_H
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#define _PPM_H
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extern uint8_t COSD_FLAGS, COSD_FLAGS2;
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extern volatile uint16_t old_timer1, ppm;
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/**
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 * init ppm, including timer1 for measurement
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 */
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void ppm_init();
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/**
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 * Handle INT2 interrupts that occur on changing edges of ppm signal
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 */
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ISR(INT2_vect);
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#endif