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/* Copyright 2017 Fred Sundvik
*
* 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/>.
*/
#include "timer.h"
#include <stdatomic.h>
static atomic_uint_least32_t current_time = 0;
static atomic_uint_least32_t async_tick_amount = 0;
static atomic_uint_least32_t access_counter = 0;
void simulate_async_tick(uint32_t t) {
async_tick_amount = t;
}
uint32_t timer_read_internal(void) {
return current_time;
}
uint32_t current_access_counter(void) {
return access_counter;
}
void reset_access_counter(void) {
access_counter = 0;
}
void timer_init(void) {
current_time = 0;
async_tick_amount = 0;
access_counter = 0;
}
void timer_clear(void) {
current_time = 0;
async_tick_amount = 0;
access_counter = 0;
}
uint16_t timer_read(void) {
return (uint16_t)timer_read32();
}
uint32_t timer_read32(void) {
if (access_counter++ > 0) {
current_time += async_tick_amount;
}
return current_time;
}
uint16_t timer_elapsed(uint16_t last) {
return TIMER_DIFF_16(timer_read(), last);
}
uint32_t timer_elapsed32(uint32_t last) {
return TIMER_DIFF_32(timer_read32(), last);
}
void set_time(uint32_t t) {
current_time = t;
access_counter = 0;
}
void advance_time(uint32_t ms) {
current_time += ms;
access_counter = 0;
}
void wait_ms(uint32_t ms) {
advance_time(ms);
}
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