MQTT服务
IMqttProcessManager mqttProcessManager = IPCServiceManager.getInstance()
.getService(IPCServiceManager.IPCService.MQTT_SERVICE);
public interface IMqttProcessManager {
    
    void setMqttStatusChangedCallback(IMqttStatusCallback cb);
    
    public class MqttConnectStatus {
        
        public static final int STATUS_CLOUD_CONN = 7;
        
        public static final int STATUS_OFFLINE = 10;
        
        public static final int STATUS_ALREADY_BIND = 9;
    }
    
    public boolean enableLowPower(int interval, WakeUpCallback callback);
    
    public boolean disableLowPower();
}