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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2020 microDev
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "peripherals/timer.h"
#define TIMER_FREE 1
#define TIMER_BUSY 0
static uint8_t timer_state[2][2];
void peripherals_timer_reset(void) {
timer_index_t timer;
for (uint8_t i = 0; i < 2; i++) {
for (uint8_t j = 0; j < 2; j++) {
if (timer_state[i][j] == TIMER_BUSY) {
timer.idx = (timer_idx_t)j;
timer.group = (timer_group_t)i;
timer_state[i][j] = TIMER_FREE;
peripherals_timer_deinit(&timer);
}
}
}
}
void peripherals_timer_init(const timer_config_t *config, timer_index_t *timer) {
bool break_loop = false;
// get free timer
for (uint8_t i = 0; i < 2; i++) {
for (uint8_t j = 0; j < 2; j++) {
if (timer_state[i][j] == TIMER_FREE) {
timer->idx = (timer_idx_t)j;
timer->group = (timer_group_t)i;
timer_state[i][j] = TIMER_BUSY;
break_loop = true;
break;
} else if (i == 1 && j == 1) {
timer->idx = TIMER_MAX;
timer->group = TIMER_GROUP_MAX;
return;
}
}
if (break_loop) {
break;
}
}
// initialize timer module
timer_init(timer->group, timer->idx, config);
timer_set_counter_value(timer->group, timer->idx, 0);
}
void peripherals_timer_deinit(timer_index_t *timer) {
timer_deinit(timer->group, timer->idx);
}
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