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# osmo_gsm_tester: class defining a RF emulation object implemented using SRS ENB stdin interface
#
# Copyright (C) 2020 by sysmocom - s.f.m.c. GmbH
#
# Author: Pau Espin Pedrol <pespin@sysmocom.de>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import json
from ..core import log
from .rfemu import RFemulation
class RFemulationSrsStdin(RFemulation):
##############
# PROTECTED
##############
def __init__(self, conf):
super().__init__(conf, 'srsenb_stdin')
self.cell_id = int(conf.get('cell_id'))
if self.cell_id is None:
raise log.Error('No "cell_id" attribute provided in rfemu conf!')
self.enb = conf.get('enb')
if self.enb is None:
raise log.Error('No "srsenb" attribute provided in rfemu conf!')
def __del__(self):
self.enb = None
#############################
# PUBLIC (test API included)
#############################
def set_attenuation(self, db):
msg_str = 'cell_gain %d %f' % (self.cell_id, -db)
self.dbg('sending stdin msg: "%s"' % msg_str)
self.enb.process.stdin_write(msg_str + '\n')
def get_max_attenuation(self):
return 200 # maximum cell_gain value in srs. Is this correct value?
# vim: expandtab tabstop=4 shiftwidth=4
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