code: def mavparms(logfile):
      '''extract mavlink parameters'''
      mlog = mavutil.mavlink_connection(filename)
  
      while True:
          try:
              m = mlog.recv_match(type=['PARAM_VALUE', 'PARM'])
              if m is None:
                  return
          except Exception:
              return
          if m.get_type() == 'PARAM_VALUE':
              pname = str(m.param_id).strip()
              value = m.param_value
          else:
              pname = m.Name
              value = m.Value
          if len(pname) > 0:
              if args.changesOnly is True and pname in parms and parms[pname] != value:
                  print("%s %-15s %.6f -> %.6f" % (time.asctime(time.localtime(m._timestamp)), pname, parms[pname], value))
  
              parms[pname] = valuf mavparms(logfile):
      '''extract mavlink parameters'''
      mlog = mavutil.mavlink_connection(filename)
  
      while True:
          try:
              m = mlog.recv_match(type=['PARAM_VALUE', 'PARM'])
              if m is None:
                  return
          except Exception:
              return
          if m.get_type() == 'PARAM_VALUE':
              pname = str(m.param_id).strip()
              value = m.param_value
          else:
              pname = m.Name
              value = m.Value
          if len(pname) > 0:
              if args.changesOnly is True and pname in parms and parms[pname] != value:
                  print("%s %-15s %.6f -> %.6f" % (time.asctime(time.localtime(m._timestamp)), pname, parms[pname], value))
  
              parms[pname] = value
docs: extract mavlink parameters