100 lines
2.4 KiB
C
100 lines
2.4 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include "who_button.h"
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typedef struct
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{
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gpio_num_t io_num;
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key_state_t state;
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} key_scan_state_t;
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#define LONG_PRESS_THRESH 700000
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#define DOUBLE_CLICK_THRESH 300000
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static xQueueHandle gpio_evt_queue = NULL;
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static QueueHandle_t xQueueKeyStateO = NULL;
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static void IRAM_ATTR gpio_isr_handler_key(void *arg)
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{
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uint32_t gpio_num = (uint32_t)arg;
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xQueueSendFromISR(gpio_evt_queue, &gpio_num, NULL);
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}
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int key_scan(TickType_t ticks_to_wait)
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{
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gpio_num_t io_num;
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BaseType_t press_key = pdFALSE;
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BaseType_t lift_key = pdFALSE;
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int64_t backup_time = 0;
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int64_t interval_time = 0;
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static int64_t last_time = 0;
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for (;;)
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{
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xQueueReceive(gpio_evt_queue, &io_num, ticks_to_wait);
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if (gpio_get_level(io_num) == 0)
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{
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press_key = pdTRUE;
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backup_time = esp_timer_get_time();
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interval_time = backup_time - last_time;
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}
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else if (press_key)
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{
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lift_key = pdTRUE;
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last_time = esp_timer_get_time();
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backup_time = last_time - backup_time;
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}
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if (press_key & lift_key)
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{
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press_key = pdFALSE;
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lift_key = pdFALSE;
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if (backup_time > LONG_PRESS_THRESH)
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{
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return KEY_LONG_PRESS;
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}
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else
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{
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if ((interval_time < DOUBLE_CLICK_THRESH) && (interval_time > 0))
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return KEY_DOUBLE_CLICK;
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else
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return KEY_SHORT_PRESS;
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}
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}
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}
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}
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void key_trigger(void *arg)
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{
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int ret = 0;
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while (1)
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{
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ret = key_scan(portMAX_DELAY);
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xQueueOverwrite(xQueueKeyStateO, &ret);
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}
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vTaskDelete(NULL);
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}
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void key_init(gpio_num_t gpio_num)
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{
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gpio_config_t io_conf = {0};
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io_conf.mode = GPIO_MODE_INPUT;
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io_conf.intr_type = GPIO_INTR_ANYEDGE;
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io_conf.pin_bit_mask = 1LL << gpio_num;
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io_conf.pull_up_en = GPIO_PULLUP_ENABLE;
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gpio_config(&io_conf);
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gpio_evt_queue = xQueueCreate(5, sizeof(uint32_t));
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gpio_install_isr_service(0);
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gpio_isr_handler_add(gpio_num, gpio_isr_handler_key, (void *)gpio_num);
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}
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void register_button(const gpio_num_t key_io_num, const QueueHandle_t key_state_o)
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{
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xQueueKeyStateO = key_state_o;
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key_init(key_io_num);
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xTaskCreatePinnedToCore(key_trigger, "key_scan_task", 1024, NULL, 5, NULL, 0);
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} |