| # osmo_gsm_tester: class defining a RF emulation object implemented using a Minicircuits RC4DAT-6G-60 device |
| # |
| # 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 urllib.request |
| import xml.etree.ElementTree as ET |
| |
| from ..core import log |
| from .rfemu import RFemulation |
| |
| # https://www.minicircuits.com/softwaredownload/Prog_Manual-6-Programmable_Attenuator.pdf |
| class RFemulationMinicircuitsHTTP(RFemulation): |
| |
| # HTTP request timeout, in seconds |
| HTTP_TIMEOUT = 5 |
| |
| ############## |
| # PROTECTED |
| ############## |
| def __init__(self, conf): |
| super().__init__(conf, 'minicircuits') |
| self.addr = conf.get('addr') |
| self.ports = conf.get('ports') |
| if self.addr is None: |
| raise log.Error('No "addr" attribute provided in supply conf!') |
| if self.ports is None or len(self.ports) == 0: |
| raise log.Error('No "port" attribute provided in supply conf!') |
| self.set_name('minicircuits(%s:%r)' % (self.addr, self.ports)) |
| |
| def __del__(self): |
| self.dbg('Resetting channel attenuation to zero') |
| self.set_attenuation(0) |
| |
| def _url_prefix(self): |
| #http://10.12.1.216/:SetAttPerChan:1:0_2:0_3:0_4:0 |
| return 'http://' + self.addr |
| |
| def _utl_set_attenauation(self, db): |
| ports_str = "" |
| for port in self.ports: |
| ports_str = ports_str + str(port) + ":" |
| |
| return self._url_prefix() + '/:CHAN:' + ports_str + 'SETATT:' + str(db) |
| |
| ############################# |
| # PUBLIC (test API included) |
| ############################# |
| def set_attenuation(self, db): |
| url = self._utl_set_attenauation(db) |
| self.dbg('sending HTTP req: "%s"' % url) |
| data = urllib.request.urlopen(url, timeout = self.HTTP_TIMEOUT).read() |
| data_str = str(data, 'utf-8') |
| self.dbg('Received response: "%s"' % data_str) |
| if data_str != '1': |
| raise log.Error('Mini-circuits attenuation device returned failure! %s' & data_str) |
| |
| def get_max_attenuation(self): |
| return 95 # Maximum value of the Mini-Circuits RC4DAT-6G-95 |
| |
| # vim: expandtab tabstop=4 shiftwidth=4 |