#ifndef usdist_h #define usdist_h /* usdist.h */ /* io - Input & Output with Artificial Intelligence (ai) support on AVR. {{{ * * Copyright (C) 2010 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. * * }}} */ /* * Manage ultrasonic distance sensors using analog to digital converter. */ /** Number of sensors. */ #define USDIST_NB 4 /** Minimal calibrated distance. */ #define USDIST_MM_MIN 100 /** Maximal calibrated distance. */ #define USDIST_MM_MAX 700 /** Distance considered as too far to be true. */ #define USDIST_MM_TOO_FAR 650 /** Array containing the last measures in millimeters. */ extern uint16_t usdist_mm[USDIST_NB]; /** Initialise module. */ void usdist_init (void); /** To be called every cycle to update sensor measures. */ void usdist_update (void); #endif /* usdist_h */