public link void OS_init(){} = driver.OS_init;
public link void 设置频率为_Hz(bit n1){} = driver.set_hz;
public link void 设置周期为_微妙(bit n1){} = driver.set_us;
public link void 设置周期为_纳秒(bit n1){} = driver.set_ns;
public link void 开始输出(){} = driver.start;
public link void 停止输出(){} = driver.stop;
