• [单片机框架][bsp层][N32G4FR][framework][key_scan] 按键扫描

    本按键扫描具备以下事件。
    按下，释放，长按保持，长按释放，长长按保持，长长按释放，单击，双击，三击。
    KEY_EVENT_NONE
    KEY_EVENT_PRESS
    KEY_EVENT_RELEASE
    KEY_EVENT_LONG_HOLD
    KEY_EVENT_LONG_RELEASE
    KEY_EVENT_LONG_LONG_HOLD
    KEY_EVENT_LONG_LONG_RELEASE
    KEY_EVENT_CLICK
    KEY_EVENT_DOUBLE_CLICK
    KEY_EVENT_TRIPLE_CLICK

    
#include "bsp_gpio.h"

#include 
#include "sys_cmsis.h"
#include "modules.h"
#include "errorno.h"
#include "string.h"
#include "log.h"

#include "key.h"

#define KEY_LOG_EN 0
#if KEY_LOG_EN
#define KEY_LOG_D(str, ...)     LOG_D(str, ##__VA_ARGS__)
#define KEY_LOG_I(str, ...)     LOG_I(str, ##__VA_ARGS__)
#define KEY_LOG_N(str, ...)     LOG_N(str, ##__VA_ARGS__)
#define KEY_LOG_W(str, ...)     LOG_W(str, ##__VA_ARGS__)
#define KEY_LOG_E(str, ...)     LOG_E(str, ##__VA_ARGS__)
#define KEY_LOG_C(str, ...)     LOG_C(str, ##__VA_ARGS__)
#else
#define KEY_LOG_D(str, ...)
#define KEY_LOG_I(str, ...)
#define KEY_LOG_N(str, ...)
#define KEY_LOG_W(str, ...)
#define KEY_LOG_E(str, ...)
#define KEY_LOG_C(str, ...)
#endif

#define KEY_LPRESS_TIME         2000
#define KEY_LLPRESS_TIME        8000
#define KEY_REPEAT_TIME         1000
#define KEY_DBLCLICK_TIME       200
#define KEY_TPLCLICK_TIME       180

typedef enum
{
    KEY_STATUS_NONE             = 0,
    KEY_STATUS_DEBOUNCE         = (1 << 0),
    KEY_STATUS_FIRST_PRESS      = (1 << 1),
    KEY_STATUS_FIRST_RELEASE    = (1 << 2),
    KEY_STATUS_SECOND_PRESS     = (1 << 3),
    KEY_STATUS_SECOND_RELEASE   = (1 << 4),
    KEY_STATUS_THIRD_PRESS      = (1 << 5),
    KEY_STATUS_THIRD_RELEASE    = (1 << 6),
} key_status_t;

typedef struct
{
    uint8_t status;
    uint32_t time;
    uint32_t event;
    uint32_t flag;
    uint32_t long_press_time;
    uint32_t long_long_press_time;
    key_num_t key_num;
    key_cfg_t *p_cfg;
    key_evt_cb_t evt_cbk;
} key_hdl_t;

static key_hdl_t g_key_hdl[KEY_NUM];
static sys_timer_id_t g_key_judge_timer_id;

static void key_state_change_handler(void *arg)
{
    key_num_t key = *(key_num_t*)arg;

    if (g_key_hdl[key].p_cfg->trigger == KEY_TRIGGER_MODE_LEVEL)
    {
        if (g_key_hdl[key].time < (g_key_hdl[key].p_cfg->effective_interval / KEY_SAMPLE_INTERVAL_MS))
        {
            return;
        }

        if (g_key_hdl[key].p_cfg->active_level == bsp_gpio_read(g_key_hdl[key].p_cfg->gpio_num))
        {
            if (g_key_hdl[key].status == KEY_STATUS_NONE)
            {
                g_key_hdl[key].status               = KEY_STATUS_DEBOUNCE;
                g_key_hdl[key].time                 = 0;
                g_key_hdl[key].long_press_time      = 0;
                g_key_hdl[key].long_long_press_time = 0;
            }
        }
    }
    else if (g_key_hdl[key].p_cfg->trigger == KEY_TRIGGER_MODE_PULSE)
    {
        if (g_key_hdl[key].time < g_key_hdl[key].p_cfg->effective_interval / KEY_SAMPLE_INTERVAL_MS)
        {
            return;
        }

        if (g_key_hdl[key].p_cfg->active_level == bsp_gpio_read(g_key_hdl[key].p_cfg->gpio_num))
        {
            g_key_hdl[key].event |= KEY_EVENT_PRESS;
            if (g_key_hdl[key].evt_cbk != NULL)
            {
                (*g_key_hdl[key].evt_cbk)(key, KEY_EVENT_PRESS);
            }
            KEY_LOG_D("[key][%d][press]\r\n", key);
        }
        else if (g_key_hdl[key].p_cfg->active_level != bsp_gpio_read(g_key_hdl[key].p_cfg->gpio_num))
        {
            g_key_hdl[key].time = 0;
            g_key_hdl[key].event |= KEY_EVENT_RELEASE;
            if (g_key_hdl[key].evt_cbk != NULL)
            {
                (*g_key_hdl[key].evt_cbk)(key, KEY_EVENT_RELEASE);
            }
            KEY_LOG_D("[key][%d][release]\r\n", key);
        }
    }
}

void key_init(key_num_t key, key_cfg_t *cfg, key_evt_cb_t cbk)
{
    memset(&g_key_hdl[key], 0, sizeof(key_hdl_t));

    g_key_hdl[key].p_cfg = cfg;
    g_key_hdl[key].key_num = key;
    g_key_hdl[key].evt_cbk = cbk;

    bsp_gpio_register_irq_callback(cfg->gpio_num, key_state_change_handler,
                                  (void *)&g_key_hdl[key].key_num);

    bsp_gpio_init(cfg->gpio_num, BSP_GPIO_EXTI_ENABLE);
}

static void key_normal_handle(key_num_t key)
{
    if (g_key_hdl[key].p_cfg->active_level == bsp_gpio_read(g_key_hdl[key].p_cfg->gpio_num))
    {
        if (g_key_hdl[key].status == KEY_STATUS_NONE)
        {
            g_key_hdl[key].status               = KEY_STATUS_DEBOUNCE;
            g_key_hdl[key].time                 = 0;
            g_key_hdl[key].long_press_time      = 0;
            g_key_hdl[key].long_long_press_time = 0;
            KEY_LOG_D("[key][%d][normal_handle]\r\n", key);
        }
    }
}

static void key_debounce_handle(key_num_t key)
{
    if (g_key_hdl[key].time >= g_key_hdl[key].p_cfg->debounce_time / KEY_SAMPLE_INTERVAL_MS)
    {
        g_key_hdl[key].time                  = 0;
        g_key_hdl[key].long_press_time       = 0;
        g_key_hdl[key].long_long_press_time  = 0;
        g_key_hdl[key].flag                  = 0;
        g_key_hdl[key].event                 = 0;

        if (g_key_hdl[key].p_cfg->active_level == bsp_gpio_read(g_key_hdl[key].p_cfg->gpio_num))
        {
            g_key_hdl[key].event |= KEY_EVENT_PRESS;
            if (g_key_hdl[key].evt_cbk != NULL)
            {
                (*g_key_hdl[key].evt_cbk)(key, KEY_EVENT_PRESS);
            }
            KEY_LOG_D("[key][%d][press]\r\n", key);
            g_key_hdl[key].flag |= KEY_EVENT_PRESS;
            g_key_hdl[key].status = KEY_STATUS_FIRST_PRESS;
        }
        else
        {
            g_key_hdl[key].status = KEY_STATUS_NONE;
        }
    }
}

static void key_first_press_handle(key_num_t key)
{
    if (g_key_hdl[key].p_cfg->active_level == bsp_gpio_read(g_key_hdl[key].p_cfg->gpio_num))
    {
        if (g_key_hdl[key].long_press_time >= KEY_LPRESS_TIME / KEY_SAMPLE_INTERVAL_MS)
        {
            g_key_hdl[key].long_press_time = 0;

            if ((g_key_hdl[key].event & KEY_EVENT_LONG_HOLD) == 0)
            {
                g_key_hdl[key].event |= KEY_EVENT_LONG_HOLD;
                g_key_hdl[key].flag |= KEY_EVENT_LONG_HOLD;
                if (g_key_hdl[key].evt_cbk != NULL)
                {
                    (*g_key_hdl[key].evt_cbk)(key, KEY_EVENT_LONG_HOLD);
                }
                KEY_LOG_D("[key][%d][long_hold]\r\n", key);
            }
        }

        if (g_key_hdl[key].long_long_press_time >= KEY_LLPRESS_TIME / KEY_SAMPLE_INTERVAL_MS)
        {
            g_key_hdl[key].long_long_press_time = 0;

            if ((g_key_hdl[key].event & KEY_EVENT_LONG_LONG_HOLD) == 0)
            {
                g_key_hdl[key].event |= KEY_EVENT_LONG_LONG_HOLD;
                g_key_hdl[key].flag |= KEY_EVENT_LONG_LONG_HOLD;
                if (g_key_hdl[key].evt_cbk != NULL)
                {
                    (*g_key_hdl[key].evt_cbk)(key, KEY_EVENT_LONG_LONG_HOLD);
                }
                KEY_LOG_D("[key][%d][long_long_hold]\r\n", key);
            }
        }
    }
    else
    {
        g_key_hdl[key].event |= KEY_EVENT_RELEASE;
        if (g_key_hdl[key].evt_cbk != NULL)
        {
            (*g_key_hdl[key].evt_cbk)(key, KEY_EVENT_RELEASE);
        }
        KEY_LOG_D("[key][%d][release]\r\n", key);

        if (g_key_hdl[key].flag & KEY_EVENT_LONG_LONG_HOLD)
        {
            g_key_hdl[key].flag &= (~KEY_EVENT_LONG_LONG_HOLD);
            g_key_hdl[key].event |= KEY_EVENT_LONG_LONG_RELEASE;
            if (g_key_hdl[key].evt_cbk != NULL)
            {
                (*g_key_hdl[key].evt_cbk)(key, KEY_EVENT_LONG_LONG_RELEASE);
            }
            KEY_LOG_D("[key][%d][long_long_release]\r\n", key);
        }
        else
        {
            if (g_key_hdl[key].flag & KEY_EVENT_LONG_HOLD)
            {
                g_key_hdl[key].flag &= (~KEY_EVENT_LONG_HOLD);
                g_key_hdl[key].event |= KEY_EVENT_LONG_RELEASE;
                if (g_key_hdl[key].evt_cbk != NULL)
                {
                    (*g_key_hdl[key].evt_cbk)(key, KEY_EVENT_LONG_RELEASE);
                }
                KEY_LOG_D("[key][%d][long_release]\r\n", key);
            }
        }

        if (g_key_hdl[key].time >= KEY_DBLCLICK_TIME / KEY_SAMPLE_INTERVAL_MS)
        {
            if (((g_key_hdl[key].event & KEY_EVENT_LONG_LONG_HOLD) == 0) &&
                ((g_key_hdl[key].event & KEY_EVENT_LONG_HOLD) == 0))
            {
                g_key_hdl[key].event |= KEY_EVENT_CLICK;
                if (g_key_hdl[key].evt_cbk != NULL)
                {
                    (*g_key_hdl[key].evt_cbk)(key, KEY_EVENT_CLICK);
                }
                KEY_LOG_D("[key][%d][click_1]\r\n", key);
            }
            g_key_hdl[key].status = KEY_STATUS_NONE;
        }
        else
        {
            g_key_hdl[key].time      = 0;
            g_key_hdl[key].status    = KEY_STATUS_FIRST_RELEASE;
        }
    }
}

static void key_first_release_handle(key_num_t key)
{
    if (g_key_hdl[key].time <= KEY_DBLCLICK_TIME / KEY_SAMPLE_INTERVAL_MS)
    {
        if (g_key_hdl[key].p_cfg->active_level == bsp_gpio_read(g_key_hdl[key].p_cfg->gpio_num))
        {
            g_key_hdl[key].time   = 0;
            g_key_hdl[key].status = KEY_STATUS_SECOND_PRESS;
        }
    }
    else
    {
        if (g_key_hdl[key].p_cfg->active_level != bsp_gpio_read(g_key_hdl[key].p_cfg->gpio_num))
        {
            g_key_hdl[key].event |= KEY_EVENT_CLICK;
            if (g_key_hdl[key].evt_cbk != NULL)
            {
                (*g_key_hdl[key].evt_cbk)(key, KEY_EVENT_CLICK);
            }
            KEY_LOG_D("[key][%d][click_2]\r\n", key);
            g_key_hdl[key].status = KEY_STATUS_NONE;
        }
    }
}

static void key_second_press_handle(key_num_t key)
{
    if (g_key_hdl[key].time <= KEY_DBLCLICK_TIME / KEY_SAMPLE_INTERVAL_MS)
    {
        if (g_key_hdl[key].p_cfg->active_level != bsp_gpio_read(g_key_hdl[key].p_cfg->gpio_num))
        {
            g_key_hdl[key].time   = 0;
            g_key_hdl[key].status = KEY_STATUS_SECOND_RELEASE;
        }
    }
    else
    {
        g_key_hdl[key].event |= KEY_EVENT_CLICK;
        if (g_key_hdl[key].evt_cbk != NULL)
        {
            (*g_key_hdl[key].evt_cbk)(key, KEY_EVENT_CLICK);
        }
        KEY_LOG_D("[key][%d][click_3]\r\n", key);
        g_key_hdl[key].time                  = 0;
        g_key_hdl[key].long_press_time       = 0;
        g_key_hdl[key].long_long_press_time  = 0;
        g_key_hdl[key].status                = KEY_STATUS_FIRST_PRESS;
    }
}

static void key_second_release_handle(key_num_t key)
{
    if (g_key_hdl[key].time <= KEY_TPLCLICK_TIME / KEY_SAMPLE_INTERVAL_MS)
    {
        if (g_key_hdl[key].p_cfg->active_level == bsp_gpio_read(g_key_hdl[key].p_cfg->gpio_num))
        {
            g_key_hdl[key].time   = 0;
            g_key_hdl[key].status = KEY_STATUS_THIRD_PRESS;
        }
    }
    else
    {
        g_key_hdl[key].event |= KEY_EVENT_DOUBLE_CLICK;
        if (g_key_hdl[key].evt_cbk != NULL)
        {
            (*g_key_hdl[key].evt_cbk)(key, KEY_EVENT_DOUBLE_CLICK);
        }
        KEY_LOG_D("[key][%d][double_click_1]\r\n", key);
        g_key_hdl[key].status = KEY_STATUS_NONE;
    }
}

static void key_third_press_handle(key_num_t key)
{
    if (g_key_hdl[key].time <= KEY_TPLCLICK_TIME / KEY_SAMPLE_INTERVAL_MS)
    {
        if (g_key_hdl[key].p_cfg->active_level != bsp_gpio_read(g_key_hdl[key].p_cfg->gpio_num))
        {
            g_key_hdl[key].time = 0;
            g_key_hdl[key].event |= KEY_EVENT_TRIPLE_CLICK;
            if (g_key_hdl[key].evt_cbk != NULL)
            {
                (*g_key_hdl[key].evt_cbk)(key, KEY_EVENT_TRIPLE_CLICK);
            }
            KEY_LOG_D("[key][%d][triple_click]\r\n", key);
            g_key_hdl[key].status = KEY_STATUS_NONE;
        }
    }
    else
    {
        g_key_hdl[key].event |= KEY_EVENT_DOUBLE_CLICK;
        if (g_key_hdl[key].evt_cbk != NULL)
        {
            (*g_key_hdl[key].evt_cbk)(key, KEY_EVENT_DOUBLE_CLICK);
        }
        KEY_LOG_D("[key][%d][double_click_2]\r\n", key);
        g_key_hdl[key].time                  = 0;
        g_key_hdl[key].long_press_time       = 0;
        g_key_hdl[key].long_long_press_time  = 0;
        g_key_hdl[key].status                = KEY_STATUS_FIRST_PRESS;
    }
}

static void key_judge_timer_handle(void const *arg)
{
    uint8_t i;

    for (i = 0; i < KEY_NUM; i++)
    {
        g_key_hdl[i].time ++;
        g_key_hdl[i].long_press_time ++;
        g_key_hdl[i].long_long_press_time ++;
    }

    for (i = 0; i < KEY_NUM; i++)
    {
        if (g_key_hdl[i].p_cfg->trigger == KEY_TRIGGER_MODE_PULSE)
        {
            continue;
        }

        switch (g_key_hdl[i].status)
        {
            case KEY_STATUS_NONE:
            {
                key_normal_handle(i);
            }
            break;
            case KEY_STATUS_DEBOUNCE:
            {
                key_debounce_handle(i);
            }
            break;
            case KEY_STATUS_FIRST_PRESS:
            {
                key_first_press_handle(i);
            }
            break;
            case KEY_STATUS_FIRST_RELEASE:
            {
                key_first_release_handle(i);
            }
            break;
            case KEY_STATUS_SECOND_PRESS:
            {
                key_second_press_handle(i);
            }
            break;
            case KEY_STATUS_SECOND_RELEASE:
            {
                key_second_release_handle(i);
            }
            break;
            case KEY_STATUS_THIRD_PRESS:
            {
                key_third_press_handle(i);
            }
            break;
            case KEY_STATUS_THIRD_RELEASE:
            {
                ;
            }
            break;
            default:
            break;
        }
    }
}
SYS_TIMER_DEF(key_judge_timer, key_judge_timer_handle);

static void key_module_init(void)
{
    sys_status status;

    g_key_judge_timer_id = sys_timer_create(SYS_TIMER(key_judge_timer), SYS_TIMER_PERIODIC, NULL);
    if (g_key_judge_timer_id)
    {
        status = sys_timer_start(g_key_judge_timer_id, KEY_SAMPLE_INTERVAL_MS);
        if (status != RETVAL(E_OK))
        {
            KEY_LOG_E("[key][key_module_init] failed %d\r\n", status);
        }
    }
}

APP_INITCALL("key_module", key_module_init);


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    #ifndef __KEY_H__
#define __KEY_H__

#include "typedefs.h"

typedef enum
{
    KEY0_POWER,
    KEY1_HALL,
    KEY2_USB,
    KEY_NUM,
} key_num_t;

#define KEY_SAMPLE_INTERVAL_MS          10

typedef enum
{
    KEY_EVENT_NONE              = 0,
    KEY_EVENT_PRESS             = (1 << 0),
    KEY_EVENT_RELEASE           = (1 << 1),
    KEY_EVENT_LONG_HOLD         = (1 << 2),
    KEY_EVENT_LONG_RELEASE      = (1 << 3),
    KEY_EVENT_LONG_LONG_HOLD    = (1 << 4),
    KEY_EVENT_LONG_LONG_RELEASE = (1 << 5),
    KEY_EVENT_CLICK             = (1 << 6),
    KEY_EVENT_DOUBLE_CLICK      = (1 << 7),
    KEY_EVENT_TRIPLE_CLICK      = (1 << 8),
} key_event_t;

typedef enum
{
    KEY_ACTIVE_LEVEL_LOW = 0,
    KEY_ACTIVE_LEVEL_HIGH,
} key_active_level_t;

typedef enum
{
    KEY_TRIGGER_MODE_PULSE,
    KEY_TRIGGER_MODE_LEVEL,
} key_trigger_t;

typedef struct
{
    uint8_t gpio_num;
    uint8_t debounce_time;
    uint16_t effective_interval;
    key_trigger_t trigger;
    key_active_level_t active_level;
} key_cfg_t;

typedef void (*key_evt_cb_t)(key_num_t key, uint32_t event);

void key_init(key_num_t key, key_cfg_t *cfg, key_evt_cb_t cbk);

#endif //__KEY_H__


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    最新代码请去gitee获取：跳转

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  • 原文地址：https://blog.csdn.net/qq_29246181/article/details/126824508