84 lines
1.9 KiB
C
84 lines
1.9 KiB
C
/* Copyright 2017 Fred Sundvik
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "timer.h"
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#include <stdatomic.h>
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static atomic_uint_least32_t current_time = 0;
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static atomic_uint_least32_t async_tick_amount = 0;
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static atomic_uint_least32_t access_counter = 0;
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void simulate_async_tick(uint32_t t) {
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async_tick_amount = t;
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}
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uint32_t timer_read_internal(void) {
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return current_time;
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}
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uint32_t current_access_counter(void) {
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return access_counter;
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}
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void reset_access_counter(void) {
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access_counter = 0;
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}
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void timer_init(void) {
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current_time = 0;
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async_tick_amount = 0;
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access_counter = 0;
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}
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void timer_clear(void) {
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current_time = 0;
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async_tick_amount = 0;
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access_counter = 0;
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}
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uint16_t timer_read(void) {
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return (uint16_t)timer_read32();
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}
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uint32_t timer_read32(void) {
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if (access_counter++ > 0) {
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current_time += async_tick_amount;
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}
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return current_time;
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}
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uint16_t timer_elapsed(uint16_t last) {
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return TIMER_DIFF_16(timer_read(), last);
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}
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uint32_t timer_elapsed32(uint32_t last) {
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return TIMER_DIFF_32(timer_read32(), last);
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}
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void set_time(uint32_t t) {
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current_time = t;
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access_counter = 0;
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}
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void advance_time(uint32_t ms) {
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current_time += ms;
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access_counter = 0;
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}
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void wait_ms(uint32_t ms) {
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advance_time(ms);
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}
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