def METHOD_NAME(self, reg_name):
    try :
        dps_dir = self.dps_hwmon + '/' + os.listdir(self.dps_hwmon)[0]
        dps_reg_file = dps_dir + '/' + reg_name
        with open(dps_reg_file, 'r') as fd:
            rv = fd.read()
    except (IOError, OSError) : return 'ERR'
    return rv