text: #Copyright [2017] [Mauro Riva <lemariva@mail.com> <lemariva.com>]
  
  #Licensed under the Apache License, Version 2.0 (the "License");
  #you may not use this file except in compliance with the License.
  #You may obtain a copy of the License at
  
  #http://www.apache.org/licenses/LICENSE-2.0
  
  #Unless required by applicable law or agreed to in writing, software
  #distributed under the License is distributed on an "AS IS" BASIS,
  #WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  #See the License for the specific language governing permissions and
  #limitations under the License.
  
  #The above copyright notice and this permission notice shall be
  #included in all copies or substantial portions of the Software.  
  
  from vu_meter import vu_meter
  vu = vu_meter()
  vu.test_leds()
  
  a = vu.zero_calibration()
  print(a)
  
  f = vu.adc_max_dynamic(False,  100)
  
  while True:
      x = vu.update_rms()
      #print(x)
      vu.update_leds()
  