223 lines
6.9 KiB
C++
223 lines
6.9 KiB
C++
/*
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* Copyright 2008 Free Software Foundation, Inc.
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*
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* This software is distributed under the terms of the GNU Affero Public License.
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* See the COPYING file in the main directory for details.
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*
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* This use of this software may be subject to additional restrictions.
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* See the LEGAL file in the main directory for details.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _USRP_DEVICE_H_
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#define _USRP_DEVICE_H_
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "radioDevice.h"
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#ifdef HAVE_LIBUSRP_3_3 // [
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# include <usrp/usrp_standard.h>
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# include <usrp/usrp_bytesex.h>
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# include <usrp/usrp_prims.h>
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#else // HAVE_LIBUSRP_3_3 ][
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# include "usrp_standard.h"
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# include "usrp_bytesex.h"
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# include "usrp_prims.h"
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#endif // !HAVE_LIBUSRP_3_3 ]
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#include <sys/time.h>
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#include <math.h>
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#include <string>
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#include <iostream>
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/** Define types which are not defined in libusrp-3.1 */
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#ifndef HAVE_LIBUSRP_3_2
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#include <boost/shared_ptr.hpp>
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typedef boost::shared_ptr<usrp_standard_tx> usrp_standard_tx_sptr;
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typedef boost::shared_ptr<usrp_standard_rx> usrp_standard_rx_sptr;
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#endif // HAVE_LIBUSRP_3_2
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/** A class to handle a USRP rev 4, with a two RFX900 daughterboards */
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class USRPDevice: public RadioDevice {
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private:
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static const double masterClockRate; ///< the USRP clock rate
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double desiredSampleRate; ///< the desired sampling rate
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usrp_standard_rx_sptr m_uRx; ///< the USRP receiver
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usrp_standard_tx_sptr m_uTx; ///< the USRP transmitter
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db_base_sptr m_dbRx; ///< rx daughterboard
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db_base_sptr m_dbTx; ///< tx daughterboard
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usrp_subdev_spec rxSubdevSpec;
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usrp_subdev_spec txSubdevSpec;
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double actualSampleRate; ///< the actual USRP sampling rate
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unsigned int decimRate; ///< the USRP decimation rate
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unsigned long long samplesRead; ///< number of samples read from USRP
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unsigned long long samplesWritten; ///< number of samples sent to USRP
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bool started; ///< flag indicates USRP has started
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bool skipRx; ///< set if USRP is transmit-only.
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static const unsigned int currDataSize_log2 = 21;
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static const unsigned long currDataSize = (1 << currDataSize_log2);
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short *data;
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unsigned long dataStart;
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unsigned long dataEnd;
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TIMESTAMP timeStart;
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TIMESTAMP timeEnd;
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bool isAligned;
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Mutex writeLock;
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short *currData; ///< internal data buffer when reading from USRP
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TIMESTAMP currTimestamp; ///< timestamp of internal data buffer
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unsigned currLen; ///< size of internal data buffer
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TIMESTAMP timestampOffset; ///< timestamp offset b/w Tx and Rx blocks
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TIMESTAMP latestWriteTimestamp; ///< timestamp of most recent ping command
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TIMESTAMP pingTimestamp; ///< timestamp of most recent ping response
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static const TIMESTAMP PINGOFFSET = 272; ///< undetermined delay b/w ping response timestamp and true receive timestamp
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unsigned long hi32Timestamp;
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unsigned long lastPktTimestamp;
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double rxGain;
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#ifdef SWLOOPBACK
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short loopbackBuffer[1000000];
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int loopbackBufferSize;
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double samplePeriod;
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struct timeval startTime;
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struct timeval lastReadTime;
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bool firstRead;
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#endif
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/** Set the transmission frequency */
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bool tx_setFreq(double freq, double *actual_freq);
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/** Set the receiver frequency */
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bool rx_setFreq(double freq, double *actual_freq);
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public:
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/** Object constructor */
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USRPDevice (double _desiredSampleRate, bool skipRx);
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/** Instantiate the USRP */
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bool open();
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/** Start the USRP */
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bool start();
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/** Stop the USRP */
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bool stop();
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/** Set priority not supported */
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void setPriority() { return; }
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/** Only USB bus supported */
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busType getBus() { return USB; }
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/**
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Read samples from the USRP.
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@param buf preallocated buf to contain read result
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@param len number of samples desired
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@param overrun Set if read buffer has been overrun, e.g. data not being read fast enough
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@param timestamp The timestamp of the first samples to be read
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@param underrun Set if USRP does not have data to transmit, e.g. data not being sent fast enough
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@param RSSI The received signal strength of the read result
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@return The number of samples actually read
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*/
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int readSamples(short *buf, int len, bool *overrun,
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TIMESTAMP timestamp = 0xffffffff,
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bool *underrun = NULL,
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unsigned *RSSI = NULL);
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/**
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Write samples to the USRP.
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@param buf Contains the data to be written.
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@param len number of samples to write.
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@param underrun Set if USRP does not have data to transmit, e.g. data not being sent fast enough
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@param timestamp The timestamp of the first sample of the data buffer.
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@param isControl Set if data is a control packet, e.g. a ping command
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@return The number of samples actually written
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*/
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int writeSamples(short *buf, int len, bool *underrun,
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TIMESTAMP timestamp = 0xffffffff,
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bool isControl = false);
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/** Update the alignment between the read and write timestamps */
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bool updateAlignment(TIMESTAMP timestamp);
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/** Set the transmitter frequency */
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bool setTxFreq(double wFreq);
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/** Set the receiver frequency */
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bool setRxFreq(double wFreq);
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/** Returns the starting write Timestamp*/
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TIMESTAMP initialWriteTimestamp(void) { return 20000;}
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/** Returns the starting read Timestamp*/
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TIMESTAMP initialReadTimestamp(void) { return 20000;}
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/** returns the full-scale transmit amplitude **/
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double fullScaleInputValue() {return 13500.0;}
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/** returns the full-scale receive amplitude **/
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double fullScaleOutputValue() {return 9450.0;}
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/** sets the receive chan gain, returns the gain setting **/
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double setRxGain(double dB);
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/** get the current receive gain */
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double getRxGain(void) {return rxGain;}
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/** return maximum Rx Gain **/
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double maxRxGain(void);
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/** return minimum Rx Gain **/
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double minRxGain(void);
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/** sets the transmit chan gain, returns the gain setting **/
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double setTxGain(double dB);
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/** return maximum Tx Gain **/
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double maxTxGain(void);
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/** return minimum Rx Gain **/
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double minTxGain(void);
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/** Return internal status values */
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inline double getTxFreq() { return 0;}
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inline double getRxFreq() { return 0;}
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inline double getSampleRate() {return actualSampleRate;}
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inline double numberRead() { return samplesRead; }
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inline double numberWritten() { return samplesWritten;}
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};
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#endif // _USRP_DEVICE_H_
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