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#!/usr/bin/env python2
# -*- coding: utf-8 -*-
# GR-GSM based transceiver
# Radio interface for UHD devices
#
# (C) 2019 by Vadim Yanitskiy <axilirator@gmail.com>
#
# All Rights Reserved
#
# 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 2 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, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
from gnuradio import uhd
from radio_if import RadioInterface
class RadioInterfaceUHD(RadioInterface):
# Human-readable description
def __str__(self):
return "UHD"
def phy_init_source(self):
self._phy_src = uhd.usrp_source(self.phy_args,
uhd.stream_args(cpu_format = "fc32",
channels = range(1)))
self._phy_src.set_clock_rate(26e6, uhd.ALL_MBOARDS)
self._phy_src.set_antenna(self.rx_antenna, 0)
self._phy_src.set_samp_rate(self.sample_rate)
self._phy_src.set_bandwidth(650e3, 0)
self._phy_src.set_gain(self.rx_gain)
# Some UHD devices (such as UmTRX) do start the clock
# not from 0, so it's required to reset it manually.
# Resetting UHD source will also affect the sink.
self._phy_src.set_time_now(uhd.time_spec(0.0))
def phy_init_sink(self):
self._phy_sink = uhd.usrp_sink(self.phy_args,
uhd.stream_args(cpu_format = "fc32",
channels = range(1)), "packet_len")
self._phy_sink.set_clock_rate(26e6, uhd.ALL_MBOARDS)
self._phy_sink.set_antenna(self.tx_antenna, 0)
self._phy_sink.set_samp_rate(self.sample_rate)
self._phy_sink.set_gain(self.tx_gain)
def phy_set_rx_freq(self, freq):
self._phy_src.set_center_freq(freq, 0)
def phy_set_tx_freq(self, freq):
self._phy_sink.set_center_freq(freq, 0)
def phy_set_rx_gain(self, gain):
self._phy_src.set_gain(gain, 0)
def phy_set_tx_gain(self, gain):
self._phy_sink.set_gain(gain, 0)
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