keyboard stuff
auri.ee
1/* Copyright 2017 Fred Sundvik
2 *
3 * This program is free software: you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License as published by
5 * the Free Software Foundation, either version 2 of the License, or
6 * (at your option) any later version.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 */
16
17#include "timer.h"
18#include <stdatomic.h>
19
20static atomic_uint_least32_t current_time = 0;
21static atomic_uint_least32_t async_tick_amount = 0;
22static atomic_uint_least32_t access_counter = 0;
23
24void simulate_async_tick(uint32_t t) {
25 async_tick_amount = t;
26}
27
28uint32_t timer_read_internal(void) {
29 return current_time;
30}
31
32uint32_t current_access_counter(void) {
33 return access_counter;
34}
35
36void reset_access_counter(void) {
37 access_counter = 0;
38}
39
40void timer_init(void) {
41 current_time = 0;
42 async_tick_amount = 0;
43 access_counter = 0;
44}
45
46void timer_clear(void) {
47 current_time = 0;
48 async_tick_amount = 0;
49 access_counter = 0;
50}
51
52uint16_t timer_read(void) {
53 return (uint16_t)timer_read32();
54}
55
56uint32_t timer_read32(void) {
57 if (access_counter++ > 0) {
58 current_time += async_tick_amount;
59 }
60 return current_time;
61}
62
63void set_time(uint32_t t) {
64 current_time = t;
65 access_counter = 0;
66}
67
68void advance_time(uint32_t ms) {
69 current_time += ms;
70 access_counter = 0;
71}
72
73void wait_ms(uint32_t ms) {
74 advance_time(ms);
75}