[参考译文] quot；button.c&quot；驱动程序 button_LONGPRESSING 状态

https://e2e.ti.com/support/wireless-connectivity/zigbee-thread-group/zigbee-and-thread/f/zigbee-thread-forum/1051445/button-c-driver-button_longpressing-state

button.c 驱动程序中的代码看起来很奇怪。

"默认"情况之前没有休息时间。 因此、看起来状态 button_LONGPRESSING 始终是使用 button_pressed 写入的。

此外，obj->buttonStateVariables.state = button_LONGPRESSING 使用两次，但无论如何它是 writeren。

            case Button_RELEASING:
            case Button_RELEASING_LONG:
            case Button_RELEASING_DBLPRESSED:
            /*
            * We're releasing, but isn't released after debounce.
            * Start count down again if interest in long-press
            */
            if(obj->buttonEventMask &
               (Button_EV_LONGPRESSED | Button_EV_LONGCLICKED))
            {
                obj->buttonStateVariables.state = Button_LONGPRESSING;
                ClockP_setTimeout(obj->clockHandle, obj->longPressDuration - obj->debounceDuration);
                ClockP_start(obj->clockHandle);
                obj->buttonStateVariables.state = Button_LONGPRESSING;
            }
            else
            {
                obj->buttonStateVariables.state = Button_PRESSED;
            }

            /*
             * Any other case, mark the button as pressed.
             * Typically we should not come here
             */
            default:
                 obj->buttonStateVariables.state = Button_PRESSED;
                 break;