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_PRESScase HAL_KEY_EVT_LONG_RELEASE:hal_pwrmgr_unlock(MOD_USR1);LOG("key(long press release)\n");break;
#endifdefault: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);#endifhal_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_PRESSif( 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