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authorVadim Yanitskiy <axilirator@gmail.com>2019-01-19 12:29:19 +0700
committerVadim Yanitskiy <axilirator@gmail.com>2019-01-26 10:58:25 +0700
commitca25d141f5d9ca3301ac58f82be8b61127c5ab42 (patch)
treed4df733e61895ef27f78f0f8bbee38511a43b4af
parenta53dd193dc70bd6b4efcdcbd9c073b7c21b709c9 (diff)
apps/grgsm_trx: introduce initial LMS driver support
-rwxr-xr-xapps/grgsm_trx4
-rw-r--r--python/trx/CMakeLists.txt1
-rw-r--r--python/trx/radio_if_lms.py69
3 files changed, 73 insertions, 1 deletions
diff --git a/apps/grgsm_trx b/apps/grgsm_trx
index 7da9e06..fb5a005 100755
--- a/apps/grgsm_trx
+++ b/apps/grgsm_trx
@@ -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 = "",
diff --git a/python/trx/CMakeLists.txt b/python/trx/CMakeLists.txt
index dbb3daa9..697687b 100644
--- a/python/trx/CMakeLists.txt
+++ b/python/trx/CMakeLists.txt
@@ -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
diff --git a/python/trx/radio_if_lms.py b/python/trx/radio_if_lms.py
new file mode 100644
index 0000000..b9d771a
--- /dev/null
+++ b/python/trx/radio_if_lms.py
@@ -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)