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authorHarald Welte <laforge@gnumonks.org>2018-03-07 07:50:57 +0100
committerHarald Welte <laforge@gnumonks.org>2018-06-13 21:45:32 +0000
commit940738e86aa9e69c0b5d76c75957e48244e65f28 (patch)
tree6a09aaec319712d5e9c7e222a4a0a6164c59add5 /Transceiver52M/device/lms/LMSDevice.cpp
parent8c1e2bddff288cc134f8024862e4f0e0ae6fe2aa (diff)
Initial work towards direct LimeSuite support in OsmoTRX
This is work in progress towards a direct LimeSuite driver in OsmoTRX, bypassing the currently rather complex stack of wrappers by going through UHD, SoapyUHD, SoapySDR and LimeSuite. Change-Id: Iaef29c4c2585ef8c2f94866c9591919f538c1a2d
Diffstat (limited to 'Transceiver52M/device/lms/LMSDevice.cpp')
-rw-r--r--Transceiver52M/device/lms/LMSDevice.cpp469
1 files changed, 469 insertions, 0 deletions
diff --git a/Transceiver52M/device/lms/LMSDevice.cpp b/Transceiver52M/device/lms/LMSDevice.cpp
new file mode 100644
index 0000000..ed51cdb
--- /dev/null
+++ b/Transceiver52M/device/lms/LMSDevice.cpp
@@ -0,0 +1,469 @@
+/*
+* Copyright 2018 sysmocom - s.f.m.c. GmbH
+*
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Affero 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 Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <stdint.h>
+#include <string.h>
+#include <stdlib.h>
+#include "Logger.h"
+#include "Threads.h"
+#include "LMSDevice.h"
+
+#include <lime/LimeSuite.h>
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+using namespace std;
+
+const double LMSDevice::masterClockRate = 52.0e6;
+
+LMSDevice::LMSDevice(size_t sps)
+{
+ LOG(INFO) << "creating LMS device...";
+
+ m_lms_device = NULL;
+ this->sps = sps;
+}
+
+static void lms_log_callback(int lvl, const char *msg)
+{
+ /* map lime specific log levels */
+ static const lvl_map[4] = {
+ [0] = LOGL_FATAL,
+ [1] = LOGL_ERROR,
+ [2] = LOGL_NOTICE,
+ [3] = LOGL_INFO,
+ [4] = LOGL_DEBUG,
+ };
+ /* protect against future higher log level values (lower importance) */
+ if (lvl >= ARRAY_SIZE(lvl_map))
+ lvl = ARRAY_SIZE(lvl_map)-1;
+
+ LOG(lvl) << msg;
+}
+
+int LMSDevice::open(const std::string &, int, bool)
+{
+ lms_info_str dev_str;
+ uint16_t dac_val;
+
+ LOG(INFO) << "opening LMS device..";
+
+ LMS_RegisterLogHandler(&lms_log_callback);
+
+ rc = LMS_Open(&m_lms_dev, NULL, NULL);
+ if (rc != 0)
+ return -1;
+
+ if (LMS_SetSampleRate(m_lms_dev, GSMRATE, sps) < 0)
+ goto out_close;
+ /* FIXME: make this device/model dependent, like UHDDevice:dev_param_map! */
+ ts_offset = static_caset<TIMESTAMP>(8.9e-5 * GSMRATE);
+
+ switch (ref) {
+ case REF_INTERNAL:
+ /* Ugly API: Selecting clock source implicit by writing to VCTCXO DAC ?!? */
+ if (LMS_VCTCXORead(m_lms_dev, &dac_val) < 0)
+ goto out_close;
+
+ if (LMS_VCTCXOWrite(m_lms_dev, dac_val) < 0)
+ goto out_close;
+ break;
+ case REF_EXTENAL:
+ /* Assume an external 10 MHz reference clock */
+ if (LMS_SetClockFreq(m_lms_dev, LMS_CLOCK_EXTREF, 10000000.0) < 0)
+ goto out_close;
+ break;
+ default:
+ LOG(ALERT) << "Invalid reference type";
+ goto out_close;
+ }
+
+ if (LMS_Init(m_lms_dev) < 0)
+ goto out_close;
+
+ /* Perform Rx and Tx calibration */
+ if (LMS_Calibrate(m_lms_dev, LMS_CH_RX, chan, 270000.0, 0) < 0)
+ goto out_close;
+ if (LMS_Calibrate(m_lms_dev, LMS_CH_TX, chan, 270000.0, 0) < 0)
+ goto out_close;
+
+ samplesRead = 0;
+ samplesWritten = 0;
+ started = false;
+
+ return NORMAL;
+
+out_close:
+ LOG(ALERT) << "Error in LMS open, closing: " << LMS_GetLastErrorMessage();
+ LMS_Close(m_lms_dev);
+ return -1;
+}
+
+bool LMSDevice::start()
+{
+ LOG(INFO) << "starting LMS...";
+
+ if (LMS_EnableChannel(m_lms_dev, LMS_CH_RX, 0, true) < 0)
+ return false;
+
+ if (LMS_EnableChannel(m_lms_dev, LMS_CH_TX, 0, true) < 0)
+ return false;
+
+ // Set gains to midpoint
+ setTxGain((minTxGain() + maxTxGain()) / 2);
+ setRxGain((minRxGain() + maxRxGain()) / 2);
+
+ m_lms_stream_rx = {
+ .isTx = false,
+ .channel = 0,
+ .fifoSize = 1024 * 1024,
+ .throughputVsLatency = 0.3,
+ .dataFmt = LMS_FMT_I16,
+ }
+ m_lms_stream_tx = {
+ .ixTx = true,
+ .channel = 0,
+ .fifoSize = 1024 * 1024,
+ .throughputVsLatency = 0.3,
+ .dataFmt = LMS_FMT_I16,
+ }
+
+ if (LMS_SetupStream(m_lms_dev, &m_lms_stream_rx) < 0)
+ return false;
+
+ if (LMS_SetupStream(m_lms_dev, &m_lms_stream_tx) < 0)
+ return false;
+
+ if (LMS_StartStream(&m_lms_stream_rx) < 0)
+ return false;
+
+ if (LMS_StartStream(&m_lms_stream_tx) < 0)
+ return false;
+
+ started = true;
+ return true;
+}
+
+bool LMSDevice::stop()
+{
+ if (!started)
+ return true;
+
+ LMS_StopStream(&m_lms_stream_tx);
+ LMS_StopStream(&m_lms_stream_rx);
+
+ LMS_EnableChannel(m_lms_dev, LMS_CH_RX, 0, false);
+ LMS_EnableChannel(m_lms_dev, LMS_CH_TX, 0, false);
+
+ return true;
+}
+
+double LMSDevice::maxTxGain()
+{
+ return 60.0;
+}
+
+double LMSDevice::minTxGain()
+{
+ return 0.0;
+}
+
+double LMSDevice::maxRxGain()
+{
+ return 70.0;
+}
+
+double LMSDevice::minRxGain()
+{
+ return 0.0;
+}
+
+double LMSDevice::setTxGain(double dB, size_t chan)
+{
+ if (chan) {
+ LOG(ALERT) << "Invalid channel " << chan;
+ return 0.0;
+ }
+
+ if (dB > maxTxGain())
+ dB = maxTxGain();
+ if (dB < minTxGain())
+ dB = minTxGain();
+
+ LOG(NOTICE) << "Setting TX gain to " << dB << " dB.";
+
+ if (LMS_SetGaindB(m_lms_dev, LMS_CH_TX, chan, dB) < 0)
+ LOG(ERR) << "Error setting TX gain";
+
+ return dB;
+}
+
+double LMSDevice::setRxGain(double dB, size_t chan)
+{
+ if (chan) {
+ LOG(ALERT) << "Invalid channel " << chan;
+ return 0.0;
+ }
+
+ dB = 47.0;
+
+ if (dB > maxRxGain())
+ dB = maxRxGain();
+ if (dB < minRxGain())
+ dB = minRxGain();
+
+ LOG(NOTICE) << "Setting RX gain to " << dB << " dB.";
+
+ if (LMS_SetGaindB(m_lms_dev, LMS_CH_RX, chan, dB) < 0)
+ LOG(ERR) << "Error setting RX gain";
+
+ return dB;
+}
+
+int get_ant_idx(const char *name, bool dir_tx)
+{
+ lms_name_t name_list;
+ int num_names;
+ num_names = LMS_GetAntennaList(m_lms_dev, dir_tx, &name_list);
+ for (i = 0; i < num_names; i++) {
+ if (!strcmp(name, name_list[i]))
+ return i;
+ }
+ return -1;
+}
+
+bool LMSDevice::setRxAntenna(const std::string & ant, size_t chan)
+{
+ int idx;
+
+ if (chan >= rx_paths.size()) {
+ LOG(ALERT) << "Requested non-existent channel " << chan;
+ return false;
+ }
+
+ idx = get_ant_idx(ant, LMS_CH_RX);
+ if (idx < 0) {
+ LOG(ALERT) << "Invalid Rx Antenna";
+ return false;
+ }
+
+ if (LMS_SetAntenna(m_lms_dev, LMS_CH_RX, chan, idx) < 0) {
+ LOG(ALERT) << "Unable to set Rx Antenna";
+ }
+
+ return true;
+}
+
+std::string LMSDevice::getRxAntenna(size_t chan)
+{
+ if (chan >= rx_paths.size()) {
+ LOG(ALERT) << "Requested non-existent channel " << chan;
+ return "";
+ }
+
+ idx = LMS_GetAntenna(m_lms_dev, LMS_CH_RX, chan);
+ if (idx < 0) {
+ LOG(ALERT) << "Error getting Rx Antenna";
+ return "";
+ }
+
+ if (LMS_GetAntennaList(m_lms_dev, LMS_CH_RX, chan, &list) < idx) {
+ LOG(ALERT) << "Error getting Rx Antenna List";
+ return "";
+ }
+
+ return list[idx];
+}
+
+bool LMSDevice::setTxAntenna(const std::string & ant, size_t chan)
+{
+ int idx;
+
+ if (chan >= tx_paths.size()) {
+ LOG(ALERT) << "Requested non-existent channel " << chan;
+ return false;
+ }
+
+ idx = get_ant_idx(ant, LMS_CH_TX);
+ if (idx < 0) {
+ LOG(ALERT) << "Invalid Rx Antenna";
+ return false;
+ }
+
+ if (LMS_SetAntenna(m_lms_dev, LMS_CH_TX, chan, idx) < 0) {
+ LOG(ALERT) << "Unable to set Rx Antenna";
+ }
+
+ return true;
+}
+
+std::string LMSDevice::getTxAntenna(size_t chan)
+{
+ int idx;
+
+ if (chan >= tx_paths.size()) {
+ LOG(ALERT) << "Requested non-existent channel " << chan;
+ return "";
+ }
+
+ idx = LMS_GetAntenna(m_lms_dev, LMS_CH_TX, chan);
+ if (idx < 0) {
+ LOG(ALERT) << "Error getting Tx Antenna";
+ return "";
+ }
+
+ if (LMS_GetAntennaList(m_lms_dev, LMS_CH_TX, chan, &list) < idx) {
+ LOG(ALERT) << "Error getting Tx Antenna List";
+ return "";
+ }
+
+ return list[idx];
+}
+
+// NOTE: Assumes sequential reads
+int LMSDevice::readSamples(std::vector < short *>&bufs, int len, bool * overrun,
+ TIMESTAMP timestamp, bool * underrun, unsigned *RSSI)
+{
+ lms_stream_meta_t rx_metadata = {
+ .flushPartialPacket = false,
+ .waitForTimestamp = false,
+ };
+ int rc;
+
+ if (bufs.size != 1) {
+ LOG(ALERT) << "Invalid channel combination " << bufs.size();
+ return -1;
+ }
+
+ /* Shift read time with respect to transmit clock */
+ timestamp += ts_offset;
+
+ rc = LMS_RecvStream(&m_lms_stream_rx, bufs[0], len, &rx_metadata, 100);
+
+ *overrun = false;
+ *underrun = false;
+
+ if (LMS_GetStreamStatus(&m_lms_stream_rx, &status) == 0) {
+ if (status.underrun > m_last_rx_underruns)
+ *underrun = true;
+ m_last_rx_underruns = status.underrun;
+
+ if (status.overrun > m_last_rx_overruns)
+ *overrun = true;
+ m_last_rx_overruns = status.overrun;
+ }
+
+ samplesRead += rc;
+
+ return rc;
+}
+
+int LMSDevice::writeSamples(std::vector < short *>&bufs, int len,
+ bool * underrun, unsigned long long timestamp,
+ bool isControl)
+{
+ lms_stream_status_t status;
+ lms_stream_meta_t tx_metadata = {
+ .flushPartialPacket = false,
+ .waitForTimestamp = true,
+ .timestamp = timestamp,
+ };
+ int rc;
+
+ if (isControl) {
+ LOG(ERR) << "Control packets not supported";
+ return 0;
+ }
+
+ if (bufs.size() != 1) {
+ LOG(ALERT) << "Invalid channel combination " << bufs.size();
+ return -1;
+ }
+
+ rc = LMS_Send_Stream(&m_lms_stream_tx, bufs[0], len, &tx_metadata, 100);
+ if (rc != len) {
+ LOG(ALERT) << "LMS: Device send timed out ";
+ }
+
+ *underrun = false;
+
+ if (LMS_GetStreamStatus(&m_lms_stream_tx, &status) == 0) {
+ if (status.underrun > m_last_tx_underruns)
+ *underrun = true;
+ m_last_tx_underruns = status.underrun;
+ }
+
+ samplesWritten += rc;
+
+ return rc;
+}
+
+bool LMSDevice::updateAlignment(TIMESTAMP timestamp)
+{
+ short data[] = { 0x00, 0x02, 0x00, 0x00 };
+ uint32_t *wordPtr = (uint32_t *) data;
+ *wordPtr = host_to_usrp_u32(*wordPtr);
+ bool tmpUnderrun;
+
+ std::vector < short *>buf(1, data);
+ if (writeSamples(buf, 1, &tmpUnderrun, timestamp & 0x0ffffffffll, true)) {
+ pingTimestamp = timestamp;
+ return true;
+ }
+ return false;
+}
+
+bool LMSDevice::setTxFreq(double wFreq, size_t chan)
+{
+
+ if (chan) {
+ LOG(ALERT) << "Invalid channel " << chan;
+ return false;
+ }
+
+ if (LMS_SetLOFrequency(m_lms_dev, LMS_CH_TX, chan, wFreq) < 0) {
+ LOG(ALERT) << "set Tx: " << wFreq << " failed!";
+ return false;
+ }
+
+ return true;
+}
+
+bool LMSDevice::setRxFreq(double wFreq, size_t chan)
+{
+ if (chan) {
+ LOG(ALERT) << "Invalid channel " << chan;
+ return false;
+ }
+
+ if (LMS_SetLOFrequency(m_lms_dev, LMS_CH_RX, chan, wFreq) < 0) {
+ LOG(ALERT) << "set Rx: " << wFreq << " failed!";
+ return false;
+ }
+
+ return true;
+}
+
+RadioDevice *RadioDevice::make(size_t tx_sps, size_t rx_sps,
+ InterfaceType iface, size_t chans, double offset,
+ const std::vector < std::string > &tx_paths,
+ const std::vector < std::string > &rx_paths)
+{
+ return new LMSDevice(tx_sps);
+}