| # 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) |
| try: |
| self.enb.process.stdin_write(msg_str + '\n') |
| except Exception as e: |
| self.log(repr(e)) |
| |
| def get_max_attenuation(self): |
| return 200 # maximum cell_gain value in srs. Is this correct value? |
| |
| # vim: expandtab tabstop=4 shiftwidth=4 |