/* Copyright 2011 Jun Wako <wakojun@gmail.com> 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, see <http://www.gnu.org/licenses/>. */ #pragma once #include <stdint.h> #ifndef TIMER_PRESCALER # if F_CPU > 16000000 # define TIMER_PRESCALER 256 # elif F_CPU > 2000000 # define TIMER_PRESCALER 64 # elif F_CPU > 250000 # define TIMER_PRESCALER 8 # else # define TIMER_PRESCALER 1 # endif #endif #define TIMER_RAW_FREQ (F_CPU / TIMER_PRESCALER) #define TIMER_RAW TCNT0 #define TIMER_RAW_TOP (TIMER_RAW_FREQ / 1000) #if (TIMER_RAW_TOP > 255) # error "Timer0 can't count 1ms at this clock freq. Use larger prescaler." #endif