public link bit ״̬Ϊ = driver.open_status;
public link bit ״̬Ϊֹͣ = driver.close_status;
public link void OS_init(){} = driver.OS_init;
public link void (){} = driver.open;
public link void ֹͣ(){} = driver.close;
public link void ת(){} = driver.swap;
