4 Copyright 2008, 2009 Michel Pollet <buserror@gmail.com>
6 This file is part of simavr.
8 simavr is free software: you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation, either version 3 of the License, or
11 (at your option) any later version.
13 simavr is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with simavr. If not, see <http://www.gnu.org/licenses/>.
23 #ifndef __SIM_CYCLE_TIMERS_H___
24 #define __SIM_CYCLE_TIMERS_H___
32 // converts a number of usec to a number of machine cycles, at current speed
33 static inline avr_cycle_count_t avr_usec_to_cycles(avr_t * avr, uint32_t usec)
35 return avr->frequency * (avr_cycle_count_t)usec / 1000000;
38 // converts back a number of cycles to usecs (for usleep)
39 static inline uint32_t avr_cycles_to_usec(avr_t * avr, avr_cycle_count_t cycles)
41 return 1000000 * cycles / avr->frequency;
44 // converts a number of hz (to megahertz etc) to a number of cycle
45 static inline avr_cycle_count_t avr_hz_to_cycles(avr_t * avr, uint32_t hz)
47 return avr->frequency / hz;
50 // register for calling 'timer' in 'when' cycles
51 void avr_cycle_timer_register(avr_t * avr, avr_cycle_count_t when, avr_cycle_timer_t timer, void * param);
52 // register a timer to call in 'when' usec
53 void avr_cycle_timer_register_usec(avr_t * avr, uint32_t when, avr_cycle_timer_t timer, void * param);
54 // cancel a previously set timer
55 void avr_cycle_timer_cancel(avr_t * avr, avr_cycle_timer_t timer, void * param);
59 // Private, called from the core
61 avr_cycle_count_t avr_cycle_timer_process(avr_t * avr);
67 #endif /* __SIM_CYCLE_TIMERS_H___ */