#ifndef debounce_hh #define debounce_hh // io-hub - Modular Input/Output. {{{ // // Copyright (C) 2013 Nicolas Schodet // // APBTeam: // Web: http://apbteam.org/ // Email: team AT apbteam DOT org // // 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. // // }}} #include "ucoolib/intf/io.hh" /// Debounce a contact. class Debounce { public: /// Constructor. Debounce (ucoo::Io &io, int filter_depth); /// To be called at each cycle. void update (); /// Get filtered state. bool get () const { return state_; } private: /// Attached input. ucoo::Io &io_; /// Filter depth, number of updates for which input should be stable. int filter_depth_; /// Current output. bool state_; /// Current filter counter. int filter_; }; #endif // debounce_hh