code: def pin_6_pwm_128():
      
      # instantiate the pymata_core API
      board = PyMata3()
  
      # set the pin mode
      board.set_pin_mode(6, Constants.PWM)
      board.analog_write(6, 128)
  
      # wait for 3 seconds to see the LED lit
      board.sleep(3)
  
      # reset the board and exit
      board.shutdown()
docs: Set digital pin 6 as a PWM output and set its output value to 128
      @return: