timerscfg.h

00001 /*
00002 This file is part of CanFestival, a library implementing CanOpen Stack.
00003 
00004 Copyright (C): Edouard TISSERANT and Francis DUPIN
00005 mbed port: sgrove
00006 
00007 See COPYING file for copyrights details.
00008 
00009 This library is free software; you can redistribute it and/or
00010 modify it under the terms of the GNU Lesser General Public
00011 License as published by the Free Software Foundation; either
00012 version 2.1 of the License, or (at your option) any later version.
00013 
00014 This library is distributed in the hope that it will be useful,
00015 but WITHOUT ANY WARRANTY; without even the implied warranty of
00016 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00017 Lesser General Public License for more details.
00018 
00019 You should have received a copy of the GNU Lesser General Public
00020 License along with this library; if not, write to the Free Software
00021 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00022 */
00023 
00024 #ifndef __TIMERSCFG_H__
00025 #define __TIMERSCFG_H__
00026 
00027 // Whatever your microcontroller, the timer wont work if
00028 // TIMEVAL is not at least on 32 bits
00029 #define TIMEVAL UNS32
00030 
00031 // The max count for the freerunning counter register
00032 #define TIMEVAL_MAX 0xFFFFFFFF
00033 
00034 // The timer is incrementing every 4 us.
00035 //#define MS_TO_TIMEVAL(ms) (ms * 250)
00036 //#define US_TO_TIMEVAL(us) (us>>2)
00037 
00038 // The timer is incrementing every 8 us.
00039 #define MS_TO_TIMEVAL(ms) ((ms) * 125)
00040 #define US_TO_TIMEVAL(us) ((us)>>3)
00041 
00042 #endif