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- /*
- * buttons.c
- *
- * Copyright (c) 2022 - 2023 Thomas Buck (thomas@xythobuz.de)
- *
- * 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 3 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.
- *
- * See <http://www.gnu.org/licenses/>.
- */
-
- #include "pico/stdlib.h"
-
- #include "config.h"
- #include "controls.h"
- #include "buttons.h"
-
- #define BUTTONS_COUNT 4
- uint gpio_num[BUTTONS_COUNT] = { 21, 22, 26, 27 };
-
- struct button_state {
- uint32_t last_time;
- bool current_state, last_state;
- };
-
- struct button_state buttons[BUTTONS_COUNT];
-
- void buttons_init(void) {
- for (int i = 0; i < BUTTONS_COUNT; i++) {
- gpio_init(gpio_num[i]);
- gpio_set_dir(gpio_num[i], GPIO_IN);
- gpio_pull_up(gpio_num[i]);
-
- buttons[i].last_time = 0;
- buttons[i].current_state = false;
- buttons[i].last_state = false;
- }
- }
-
- void buttons_run(void) {
- for (int i = 0; i < BUTTONS_COUNT; i++) {
- bool state = !gpio_get(gpio_num[i]);
- uint32_t now = to_ms_since_boot(get_absolute_time());
-
- if (state != buttons[i].last_state) {
- buttons[i].last_time = now;
- }
-
- if ((now - buttons[i].last_time) > DEBOUNCE_DELAY_MS) {
- if (state != buttons[i].current_state) {
- buttons[i].current_state = state;
- controls_mouse_new(i, state);
- }
- }
-
- buttons[i].last_state = state;
- }
- }
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