| /* |
| * Copyright 2018 sysmocom - s.f.m.c. GmbH |
| * |
| * This software is distributed under multiple licenses; see the COPYING file in the main directory for licensing information for this specific distribuion. |
| * |
| * This use of this software may be subject to additional restrictions. |
| * See the LEGAL file in the main directory for details. |
| |
| 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. |
| |
| */ |
| |
| #ifndef _LMS_DEVICE_H_ |
| #define _LMS_DEVICE_H_ |
| |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| |
| #include "radioDevice.h" |
| |
| #include <sys/time.h> |
| #include <math.h> |
| #include <limits.h> |
| #include <string> |
| #include <iostream> |
| #include <lime/LimeSuite.h> |
| |
| /* Definition of LIMESDR_TX_AMPL limits maximum amplitude of I and Q |
| * channels separately. Hence LIMESDR_TX_AMPL value must be 1/sqrt(2) = |
| * 0.7071.... to get an amplitude of 1 of the complex signal: |
| * A^2 = I^2 + Q^2 |
| * A^2 = (1/sqrt(2))^2 + (1/sqrt(2))^2 |
| * A^2 = 1/2 + 1/2 |
| * A^2 = 1 */ |
| #define LIMESDR_TX_AMPL 0.707 |
| |
| /** A class to handle a LimeSuite supported device */ |
| class LMSDevice:public RadioDevice { |
| |
| private: |
| |
| static constexpr double masterClockRate = 52.0e6; |
| |
| lms_device_t *m_lms_dev; |
| std::vector<lms_stream_t> m_lms_stream_rx; |
| std::vector<lms_stream_t> m_lms_stream_tx; |
| |
| std::vector<uint32_t> m_last_rx_underruns; |
| std::vector<uint32_t> m_last_rx_overruns; |
| std::vector<uint32_t> m_last_tx_underruns; |
| std::vector<uint32_t> m_last_tx_overruns; |
| |
| double actualSampleRate; ///< the actual USRP sampling rate |
| |
| unsigned long long samplesRead; ///< number of samples read from LMS |
| unsigned long long samplesWritten; ///< number of samples sent to LMS |
| |
| bool started; ///< flag indicates LMS has started |
| bool skipRx; ///< set if LMS is transmit-only. |
| |
| TIMESTAMP ts_initial, ts_offset; |
| |
| double rxGain; |
| |
| int get_ant_idx(const std::string & name, bool dir_tx, size_t chan); |
| bool flush_recv(size_t num_pkts); |
| |
| public: |
| |
| /** Object constructor */ |
| LMSDevice(size_t tx_sps, size_t rx_sps, InterfaceType iface, size_t chans, double lo_offset, |
| const std::vector<std::string>& tx_paths, |
| const std::vector<std::string>& rx_paths); |
| |
| /** Instantiate the LMS */ |
| int open(const std::string &args, int ref, bool swap_channels); |
| |
| /** Start the LMS */ |
| bool start(); |
| |
| /** Stop the LMS */ |
| bool stop(); |
| |
| /** Set priority not supported */ |
| void setPriority(float prio = 0.5) { |
| } |
| |
| enum TxWindowType getWindowType() { |
| return TX_WINDOW_LMS1; |
| } |
| |
| /** |
| Read samples from the LMS. |
| @param buf preallocated buf to contain read result |
| @param len number of samples desired |
| @param overrun Set if read buffer has been overrun, e.g. data not being read fast enough |
| @param timestamp The timestamp of the first samples to be read |
| @param underrun Set if LMS does not have data to transmit, e.g. data not being sent fast enough |
| @param RSSI The received signal strength of the read result |
| @return The number of samples actually read |
| */ |
| int readSamples(std::vector < short *>&buf, int len, bool * overrun, |
| TIMESTAMP timestamp = 0xffffffff, bool * underrun = |
| NULL, unsigned *RSSI = NULL); |
| /** |
| Write samples to the LMS. |
| @param buf Contains the data to be written. |
| @param len number of samples to write. |
| @param underrun Set if LMS does not have data to transmit, e.g. data not being sent fast enough |
| @param timestamp The timestamp of the first sample of the data buffer. |
| @param isControl Set if data is a control packet, e.g. a ping command |
| @return The number of samples actually written |
| */ |
| int writeSamples(std::vector < short *>&bufs, int len, bool * underrun, |
| TIMESTAMP timestamp = 0xffffffff, bool isControl = |
| false); |
| |
| /** Update the alignment between the read and write timestamps */ |
| bool updateAlignment(TIMESTAMP timestamp); |
| |
| /** Set the transmitter frequency */ |
| bool setTxFreq(double wFreq, size_t chan = 0); |
| |
| /** Set the receiver frequency */ |
| bool setRxFreq(double wFreq, size_t chan = 0); |
| |
| /** Returns the starting write Timestamp*/ |
| TIMESTAMP initialWriteTimestamp(void) { |
| return ts_initial; |
| } |
| |
| /** Returns the starting read Timestamp*/ |
| TIMESTAMP initialReadTimestamp(void) { |
| return ts_initial; |
| } |
| |
| /** returns the full-scale transmit amplitude **/ |
| double fullScaleInputValue() { |
| return(double) SHRT_MAX * LIMESDR_TX_AMPL; |
| } |
| |
| /** returns the full-scale receive amplitude **/ |
| double fullScaleOutputValue() { |
| return (double) SHRT_MAX; |
| } |
| |
| /** sets the receive chan gain, returns the gain setting **/ |
| double setRxGain(double dB, size_t chan = 0); |
| |
| /** get the current receive gain */ |
| double getRxGain(size_t chan = 0) { |
| return rxGain; |
| } |
| |
| /** return maximum Rx Gain **/ |
| double maxRxGain(void); |
| |
| /** return minimum Rx Gain **/ |
| double minRxGain(void); |
| |
| /** sets the transmit chan gain, returns the gain setting **/ |
| double setTxGain(double dB, size_t chan = 0); |
| |
| /** return maximum Tx Gain **/ |
| double maxTxGain(void); |
| |
| /** return minimum Rx Gain **/ |
| double minTxGain(void); |
| |
| /** sets the RX path to use, returns true if successful and false otherwise */ |
| bool setRxAntenna(const std::string & ant, size_t chan = 0); |
| |
| /* return the used RX path */ |
| std::string getRxAntenna(size_t chan = 0); |
| |
| /** sets the RX path to use, returns true if successful and false otherwise */ |
| bool setTxAntenna(const std::string & ant, size_t chan = 0); |
| |
| /* return the used RX path */ |
| std::string getTxAntenna(size_t chan = 0); |
| |
| /** return whether user drives synchronization of Tx/Rx of USRP */ |
| bool requiresRadioAlign(); |
| |
| /** return whether user drives synchronization of Tx/Rx of USRP */ |
| virtual GSM::Time minLatency(); |
| |
| /** Return internal status values */ |
| inline double getTxFreq(size_t chan = 0) { |
| return 0; |
| } |
| inline double getRxFreq(size_t chan = 0) { |
| return 0; |
| } |
| inline double getSampleRate() { |
| return actualSampleRate; |
| } |
| inline double numberRead() { |
| return samplesRead; |
| } |
| inline double numberWritten() { |
| return samplesWritten; |
| } |
| }; |
| |
| #endif // _LMS_DEVICE_H_ |