请问一下按键事件回调函数和用户注册时的ID是相反的是什么原因，我有4个按键，注册时是按0、1、2、3分配的ID,但是在事件回调中是相反的顺序，比如说我注册的时候ID是0，但是在事件回调函数里面打印的按键ID是3

[14779771343]

已经发现按键ID是相反的原因是在按键事件处理函数中，头结点应该是在寄存器g_btn_status_reg的高位，在程序中是最低位。把“ i = 0”改成“ i = button_cnt - 1”，以及“ i ++”改成“i--” `static void flex_button_process(void) { uint8_t i; flex_button_t* target;

for (target = btn_head, i = button_cnt - 1; target != NULL; target = target->next, i --)
{
    if (target->status > FLEX_BTN_STAGE_DEFAULT)
    {
        target->scan_cnt ++;
        if (target->scan_cnt >= ((1 << (sizeof(target->scan_cnt) * 8)) - 1))
        {
            target->scan_cnt = target->long_hold_start_tick;
        }
    }

    switch (target->status)
    {
    case FLEX_BTN_STAGE_DEFAULT: /* stage: default(button up) */
        if (BTN_IS_PRESSED(i)) /* is pressed */
        {
            target->scan_cnt = 0;
            target->click_cnt = 0;

            EVENT_SET_AND_EXEC_CB(target, FLEX_BTN_PRESS_DOWN);

            /* swtich to button down stage */
            target->status = FLEX_BTN_STAGE_DOWN;
        }
        else
        {
            target->event = FLEX_BTN_PRESS_NONE;
        }
        break;

    case FLEX_BTN_STAGE_DOWN: /* stage: button down */
        if (BTN_IS_PRESSED(i)) /* is pressed */
        {
            if (target->click_cnt > 0) /* multiple click */
            {
                if (target->scan_cnt > target->max_multiple_clicks_interval)
                {
                    EVENT_SET_AND_EXEC_CB(target, 
                        target->click_cnt < FLEX_BTN_PRESS_REPEAT_CLICK ? 
                            target->click_cnt :
                            FLEX_BTN_PRESS_REPEAT_CLICK);

                    /* swtich to button down stage */
                    target->status = FLEX_BTN_STAGE_DOWN;
                    target->scan_cnt = 0;
                    target->click_cnt = 0;
                }
            }
            else if (target->scan_cnt >= target->long_hold_start_tick)
            {
                if (target->event != FLEX_BTN_PRESS_LONG_HOLD)
                {
                    EVENT_SET_AND_EXEC_CB(target, FLEX_BTN_PRESS_LONG_HOLD);
                }
            }
            else if (target->scan_cnt >= target->long_press_start_tick)
            {
                if (target->event != FLEX_BTN_PRESS_LONG_START)
                {
                    EVENT_SET_AND_EXEC_CB(target, FLEX_BTN_PRESS_LONG_START);
                }
            }
            else if (target->scan_cnt >= target->short_press_start_tick)
            {
                if (target->event != FLEX_BTN_PRESS_SHORT_START)
                {
                    EVENT_SET_AND_EXEC_CB(target, FLEX_BTN_PRESS_SHORT_START);
                }
            }
        }
        else /* button up */
        {
            if (target->scan_cnt >= target->long_hold_start_tick)
            {
                EVENT_SET_AND_EXEC_CB(target, FLEX_BTN_PRESS_LONG_HOLD_UP);
                target->status = FLEX_BTN_STAGE_DEFAULT;
            }
            else if (target->scan_cnt >= target->long_press_start_tick)
            {
                EVENT_SET_AND_EXEC_CB(target, FLEX_BTN_PRESS_LONG_UP);
                target->status = FLEX_BTN_STAGE_DEFAULT;
            }
            else if (target->scan_cnt >= target->short_press_start_tick)
            {
                EVENT_SET_AND_EXEC_CB(target, FLEX_BTN_PRESS_SHORT_UP);
                target->status = FLEX_BTN_STAGE_DEFAULT;
            }
            else
            {
                /* swtich to multiple click stage */
                target->status = FLEX_BTN_STAGE_MULTIPLE_CLICK;
                target->click_cnt ++;
            }
        }
        break;

    case FLEX_BTN_STAGE_MULTIPLE_CLICK: /* stage: multiple click */
        if (BTN_IS_PRESSED(i)) /* is pressed */
        {
            /* swtich to button down stage */
            target->status = FLEX_BTN_STAGE_DOWN;
            target->scan_cnt = 0;
        }
        else
        {
            if (target->scan_cnt > target->max_multiple_clicks_interval)
            {
                EVENT_SET_AND_EXEC_CB(target, 
                    target->click_cnt < FLEX_BTN_PRESS_REPEAT_CLICK ? 
                        target->click_cnt :
                        FLEX_BTN_PRESS_REPEAT_CLICK);

                /* swtich to default stage */
                target->status = FLEX_BTN_STAGE_DEFAULT;
            }
        }
        break;
    }
}

}`

[xluohome]

FlexibleButton v2.0.1 released Latest 是存在 这个问题， @murphyzhao