蓝牙BLE芯片PHY6222之GPIO按键操作

按键唤醒

IO初始化

void key_init(void)
{
    uint8 i;
    key_state.key[0].pin = GPIO_P14;

    key_state.key[0].idle_level = HAL_HIGH_IDLE;
    hal_gpio_pin_init(P14, IE);
    hal_gpio_pull_set(P14, GPIO_PULL_UP_S);

    key_state.key_callbank = key_press_evt;//按键按下触发的回调
    hal_gpioin_register(P14, pin_event_handler, pin_event_handler);//可配置成GPIO的引脚都可产生中断唤醒
    hal_pwrmgr_register(MOD_USR1, NULL, NULL);
}
static void key_press_evt(uint8_t i, key_evt_t key_evt)
{
    LOG("\nkey index:%d gpio:%d ", i, key_state.key[i].pin);

    switch(key_evt)
    {
    case HAL_KEY_EVT_PRESS:
        LOG("key(press down)\n");
        break;

    case HAL_KEY_EVT_RELEASE:
        LOG("key(press release)\n");
        break;
#ifdef HAL_KEY_SUPPORT_LONG_PRESS

    case HAL_KEY_EVT_LONG_RELEASE:
        hal_pwrmgr_unlock(MOD_USR1);
        LOG("key(long press release)\n");
        break;
#endif

    default:
        LOG("unexpect\n");
        break;
    }
}

按键中断唤醒回调

static void pin_event_handler(gpio_pin_e pin,IO_Wakeup_Pol_e type)
{
    uint8 i;

    for(i = 0; i < HAL_KEY_NUM; i++)
    {
        if(pin == key_state.key[i].pin)
            break;
    }
		
    if(i < HAL_KEY_NUM)
    {
				
        switch(key_state.key[i].state)
        {
        case HAL_STATE_KEY_IDLE:
				
            key_idle_handler(i,type);
            break;

        case HAL_STATE_KEY_PRESS_DEBOUNCE:
						
            key_press_debonce_handler(i,type);
            break;

        case HAL_STATE_KEY_PRESS:
				
            key_press_handler(i,type);
            break;

        case HAL_STATE_KEY_RELEASE_DEBOUNCE:
				
            key_release_debonce_handler(i,type);
            break;

        default:
            break;
        }
    }
}
static void key_idle_handler(uint8 i,IO_Wakeup_Pol_e type)
{
    if(((type == NEGEDGE) && (key_state.key[i].idle_level == HAL_HIGH_IDLE)) ||
            ((type == POSEDGE) && (key_state.key[i].idle_level == HAL_LOW_IDLE)))
    {
        hal_pwrmgr_lock(MOD_USR1);//lock住mod_usr1---禁止睡眠
        key_state.key[i].state = HAL_STATE_KEY_PRESS_DEBOUNCE;//改变状态
        key_state.temp[i].in_enable = TRUE;
        key_timer_start(HAL_KEY_DEBOUNCD);//20ms消抖
    }
}

static void key_press_debonce_timer_handler(uint8 i)
{
	//读取IO的状态
    if(((hal_gpio_read(key_state.key[i].pin) == FALSE) && (key_state.key[i].idle_level == HAL_HIGH_IDLE)) ||
            ((hal_gpio_read(key_state.key[i].pin) == TRUE) && (key_state.key[i].idle_level == HAL_LOW_IDLE)))
    {
        #ifdef HAL_KEY_SUPPORT_LONG_PRESS
        //3s后读取状态，触发按键长按的事件
        osal_start_timerEx(key_state.task_id,KEY_DEMO_LONG_PRESS_EVT,HAL_KEY_LONG_PRESS_TIME);
        #endif
        hal_pwrmgr_unlock(MOD_USR1);
        key_state.key[i].state = HAL_STATE_KEY_PRESS;
        key_state.temp[i].timer_tick = getMcuPrecisionCount();
				
        if(key_state.key_callbank != NULL)
        {
            key_state.key_callbank(i,HAL_KEY_EVT_PRESS);//执行初始化时key_press_evt的回调
        }
    }
    else
    {
        key_state.key[i].state = HAL_STATE_KEY_IDLE;
        key_state.temp[i].in_enable = FALSE;
    }
}

短按&长按触发的事件

    if( events & HAL_KEY_EVENT)                                                     //do not modify,key will use it
    {
        for (uint8 i = 0; i < HAL_KEY_NUM; ++i)
        {
            if ((key_state.temp[i].in_enable == TRUE) ||
                    (key_state.key[i].state == HAL_STATE_KEY_RELEASE_DEBOUNCE))
            {
                gpio_key_timer_handler(i);
            }
        }

        return (events ^ HAL_KEY_EVENT);
    }

#ifdef HAL_KEY_SUPPORT_LONG_PRESS

    if( events & KEY_DEMO_LONG_PRESS_EVT)
    {
        for (int i = 0; i < HAL_KEY_NUM; ++i)
        {
            if(key_state.key[i].state == HAL_KEY_EVT_PRESS)
            {

                LOG("key:%d gpio:%d	", i, key_state.key[i].pin);
                LOG("key(long press down)");
                //user app code long press down process这里实现长按的应用操作
            }
        }

        return (events ^ KEY_DEMO_LONG_PRESS_EVT);
    }

#endif

注意：在PHY622的J版本（新版本）的芯片上要把P16,P17配置成GPIO的话可参考以下设置，J版本以前的芯片不支持配置成GPIO

链接：https://pan.baidu.com/s/1RdqHDBvVHyYBnK7RqHJk7w
提取码：xet2