apps/grgsm_trx: introduce initial LMS driver support

Change-Id: Ie983b10d1814906b6e659213f865e58d0f5c08e4
This commit is contained in:
Vadim Yanitskiy 2019-01-19 12:29:19 +07:00
parent a53dd193dc
commit ca25d141f5
3 changed files with 73 additions and 1 deletions

View File

@ -59,6 +59,8 @@ class Application:
if argv.driver == "uhd":
from grgsm.trx.radio_if_uhd import RadioInterfaceUHD as Radio
elif argv.driver == "lms":
from grgsm.trx.radio_if_lms import RadioInterfaceLMS as Radio
else:
raise ValueError("Unknown RadioInterface driver '%s'" % argv.driver)
@ -117,7 +119,7 @@ def parse_argv():
phy_group = parser.add_argument_group("PHY parameters")
phy_group.add_argument("--driver",
dest = "driver", type = str, default = "uhd",
choices = ["uhd"],
choices = ["uhd", "lms"],
help = "Set device driver (default %(default)s)")
phy_group.add_argument("-a", "--args",
dest = "args", type = str, default = "",

View File

@ -25,6 +25,7 @@ GR_PYTHON_INSTALL(
ctrl_if_bb.py
radio_if.py
radio_if_uhd.py
radio_if_lms.py
radio_if_grc.py
transceiver.py
dict_toggle_sign.py

View File

@ -0,0 +1,69 @@
#!/usr/bin/env python2
# -*- coding: utf-8 -*-
# GR-GSM based transceiver
# Radio interface for Lime 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.
import limesdr
from radio_if import RadioInterface
class RadioInterfaceLMS(RadioInterface):
lms_len_tag_name = "packet_len"
lms_dev_serial = ""
lms_dev_ch_mode = 1
# Human-readable description
def __str__(self):
return "LMS"
@property # Signal processing delay of PHY
def phy_proc_delay(self):
# FIXME: the current value is measured for USRP B2X0 at 26e6,
# we should measure it for LimeSDR separately!
return (285.616 + 2 * self.GSM_SYM_PERIOD_uS) * 1e-6
def phy_init_source(self):
self._phy_src = limesdr.source(self.lms_dev_serial,
self.lms_dev_ch_mode, "")
self._phy_src.set_sample_rate(self.sample_rate)
self._phy_src.set_gain(self.rx_gain, 0)
def phy_init_sink(self):
self._phy_sink = limesdr.sink(self.lms_dev_serial,
self.lms_dev_ch_mode, "",
self.lms_len_tag_name)
self._phy_sink.set_sample_rate(self.sample_rate)
self._phy_sink.set_gain(self.tx_gain, 0)
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)