importpybifnothasattr(pyb,"DAC"):print("SKIP")raiseSystemExitdac=pyb.DAC(1)print(dac)dac.noise(100)dac.triangle(100)dac.write(0)dac.write_timed(bytearray(10),100,mode=pyb.DAC.NORMAL)pyb.delay(20)dac.write(0)# test buffering argdac=pyb.DAC(1,buffering=True)dac.write(0)