| Vadim Yanitskiy | ca25d14 | 2019-01-19 12:29:19 +0700 | [diff] [blame] | 1 | #!/usr/bin/env python2 |
| 2 | # -*- coding: utf-8 -*- |
| 3 | |
| 4 | # GR-GSM based transceiver |
| 5 | # Radio interface for Lime devices |
| 6 | # |
| 7 | # (C) 2019 by Vadim Yanitskiy <axilirator@gmail.com> |
| 8 | # |
| 9 | # All Rights Reserved |
| 10 | # |
| 11 | # This program is free software; you can redistribute it and/or modify |
| 12 | # it under the terms of the GNU General Public License as published by |
| 13 | # the Free Software Foundation; either version 2 of the License, or |
| 14 | # (at your option) any later version. |
| 15 | # |
| 16 | # This program is distributed in the hope that it will be useful, |
| 17 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 19 | # GNU General Public License for more details. |
| 20 | # |
| 21 | # You should have received a copy of the GNU General Public License along |
| 22 | # with this program; if not, write to the Free Software Foundation, Inc., |
| 23 | # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 24 | |
| 25 | import limesdr |
| 26 | |
| 27 | from radio_if import RadioInterface |
| 28 | |
| 29 | class RadioInterfaceLMS(RadioInterface): |
| 30 | lms_len_tag_name = "packet_len" |
| 31 | lms_dev_serial = "" |
| 32 | lms_dev_ch_mode = 1 |
| 33 | |
| 34 | # Human-readable description |
| 35 | def __str__(self): |
| 36 | return "LMS" |
| 37 | |
| 38 | @property # Signal processing delay of PHY |
| 39 | def phy_proc_delay(self): |
| 40 | # FIXME: the current value is measured for USRP B2X0 at 26e6, |
| 41 | # we should measure it for LimeSDR separately! |
| 42 | return (285.616 + 2 * self.GSM_SYM_PERIOD_uS) * 1e-6 |
| 43 | |
| 44 | def phy_init_source(self): |
| 45 | self._phy_src = limesdr.source(self.lms_dev_serial, |
| 46 | self.lms_dev_ch_mode, "") |
| 47 | |
| 48 | self._phy_src.set_sample_rate(self.sample_rate) |
| 49 | self._phy_src.set_gain(self.rx_gain, 0) |
| 50 | |
| 51 | def phy_init_sink(self): |
| 52 | self._phy_sink = limesdr.sink(self.lms_dev_serial, |
| 53 | self.lms_dev_ch_mode, "", |
| 54 | self.lms_len_tag_name) |
| 55 | |
| 56 | self._phy_sink.set_sample_rate(self.sample_rate) |
| 57 | self._phy_sink.set_gain(self.tx_gain, 0) |
| 58 | |
| 59 | def phy_set_rx_freq(self, freq): |
| 60 | self._phy_src.set_center_freq(freq, 0) |
| 61 | |
| 62 | def phy_set_tx_freq(self, freq): |
| 63 | self._phy_sink.set_center_freq(freq, 0) |
| 64 | |
| 65 | def phy_set_rx_gain(self, gain): |
| 66 | self._phy_src.set_gain(gain, 0) |
| 67 | |
| 68 | def phy_set_tx_gain(self, gain): |
| 69 | self._phy_sink.set_gain(gain, 0) |