usrp_sink.h

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/* -*- c++ -*- */
/*
 * Copyright 2010-2014 Free Software Foundation, Inc.
 *
 * This file is part of GNU Radio
 *
 * GNU Radio 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 3, or (at your option)
 * any later version.
 *
 * GNU Radio 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 GNU Radio; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street,
 * Boston, MA 02110-1301, USA.
 */

#ifndef INCLUDED_GR_UHD_USRP_SINK_H
#define INCLUDED_GR_UHD_USRP_SINK_H

#include <gnuradio/uhd/api.h>
#include <gnuradio/sync_block.h>
#include <uhd/usrp/multi_usrp.hpp>

// TODO In 3.8, UHD 3.4 will be required and we can remove all these ifdefs
#ifndef INCLUDED_UHD_STREAM_HPP
namespace uhd {
  struct GR_UHD_API stream_args_t
  {
    stream_args_t(const std::string &cpu = "",
                  const std::string &otw = "")
      {
        cpu_format = cpu;
        otw_format = otw;
      }
    std::string cpu_format;
    std::string otw_format;
    device_addr_t args;
    std::vector<size_t> channels;
  };
}
#  define INCLUDED_UHD_STREAM_HPP
#else
#  define GR_UHD_USE_STREAM_API
#endif

namespace gr {
  namespace uhd {

    class uhd_usrp_sink;

    class GR_UHD_API usrp_sink : virtual public sync_block
    {
    public:
      // gr::uhd::usrp_sink::sptr
      typedef boost::shared_ptr<usrp_sink> sptr;

      /*!
       * \brief DEPRECATED Make a new USRP sink block using the deprecated io_type_t.
       *
       * This function will be removed in the future. Please use the other make function,
       * gr::uhd::make(const ::uhd::device_addr_t, const ::uhd::stream_args_t, const std::string).
       *
       * \ingroup uhd_blk
       */
      static sptr make(const ::uhd::device_addr_t &device_addr,
                       const ::uhd::io_type_t &io_type,
                       size_t num_channels);

      /*!
       * \brief Make a new USRP sink block.
       *
       * The USRP sink block reads a stream and transmits the samples.
       * The sink block also provides API calls for transmitter settings.
       *
       * \section uhd_tx_tagging TX Stream tagging
       *
       * The following tag keys will be consumed by the work function:
       *  - pmt::string_to_symbol("tx_sob")
       *  - pmt::string_to_symbol("tx_eob")
       *  - pmt::string_to_symbol("tx_time")
       *  - pmt::string_to_symbol("tx_freq")
       *  - pmt::string_to_symbol("tx_command")
       *  - pmt::string_to_symbol(length_tag_name)
       *
       * Any other tag will be ignored.
       *
       * The sob and eob (start and end of burst) tag values are pmt booleans.
       * When present, burst tags should be set to true (pmt::PMT_T).
       *
       * If length_tag_name is not an empty string, all "tx_sob" and "tx_eob"
       * tags will be ignored, and the input is assumed to a tagged stream,
       * as described in \ref page_tagged_stream_blocks.
       * The length tag value should be a PMT long specifying the number
       * of samples contained in the corresponding tagged stream.
       *
       * If sob/eob tags or length tags are used, this block understands that
       * the data is bursty, and will configure the USRP to make sure there's
       * no underruns etc.
       *
       * The timestamp tag value is a PMT tuple of the following:
       * (uint64 seconds, and double fractional seconds).
       *
       * The tx_freq tag has to be a double, and will issue a tune command to the USRP
       * to the given frequency, if possible. Note that oscillators need some time
       * to stabilize after this! Don't expect clean data to be sent immediately after this command.
       *
       * The command tag can carry a PMT command. See the following section.
       *
       * \section uhd_commands Command interface
       *
       * There are two ways of passing commands to this block:
       * 1) tx_command tag. The command is attached to a sample, and will executed
       *    before the sample is transmitted, and after the previous sample.
       * 2) The 'command' message port. The command is executed asynchronously,
       *    as soon as possible.
       *
       * In both cases, the payload of the command is a PMT pair, with the first
       * item ('car') being the command name, and second ('cdr') the command value.
       *
       * Command name | Command value
       * -------------|--------------------------------------------------------------------------
       * `freq`       | Tuple: (chan, new_freq). Requests a tune to `new_freq` on channel `chan`.
       * `lo_offset`  | Tuple: (chan, lo_offset). Adds a LO offset on channel `chan`.
       * `gain`       | Tuple: (chan, gain). Requests a gain change to `gain` on channel `chan`.
       *
       * See the UHD manual for more detailed documentation:
       * http://code.ettus.com/redmine/ettus/projects/uhd/wiki
       *
       * \param device_addr the address to identify the hardware
       * \param stream_args the IO format and channel specification
       * \param length_tag_name the name of the tag identifying tagged stream length
       * \return a new USRP sink block object
       */
      static sptr make(const ::uhd::device_addr_t &device_addr,
                       const ::uhd::stream_args_t &stream_args,
                       const std::string &length_tag_name = "");

      /*!
       * Set the start time for outgoing samples.
       * To control when samples are transmitted,
       * set this value before starting the flow graph.
       * The value is cleared after each run.
       * When not specified, the start time will be:
       *  - Immediately for the one channel case
       *  - in the near future for multi-channel
       *
       * \param time the absolute time for transmission to begin
       */
      virtual void set_start_time(const ::uhd::time_spec_t &time) = 0;

      /*!
       * Returns identifying information about this USRP's configuration.
       * Returns motherboard ID, name, and serial.
       * Returns daughterboard TX ID, subdev name and spec, serial, and antenna.
       * \param chan channel index 0 to N-1
       * \return TX info
       */
      virtual ::uhd::dict<std::string, std::string> get_usrp_info(size_t chan = 0) = 0;

      /*!
       * Set the frontend specification.
       * \param spec the subdev spec markup string
       * \param mboard the motherboard index 0 to M-1
       */
      virtual void set_subdev_spec(const std::string &spec, size_t mboard = 0) = 0;

      /*!
       * Get the TX frontend specification.
       * \param mboard the motherboard index 0 to M-1
       * \return the frontend specification in use
       */
      virtual std::string get_subdev_spec (size_t mboard = 0) = 0;

      /*!
       * Set the sample rate for the usrp device.
       * \param rate a new rate in Sps
       */
      virtual void set_samp_rate(double rate) = 0;

      /*!
       * Get the sample rate for the usrp device.
       * This is the actual sample rate and may differ from the rate set.
       * \return the actual rate in Sps
       */
      virtual double get_samp_rate(void) = 0;

      /*!
       * Get the possible sample rates for the usrp device.
       * \return a range of rates in Sps
       */
      virtual ::uhd::meta_range_t get_samp_rates(void) = 0;

      /*!
       * Tune the usrp device to the desired center frequency.
       * \param tune_request the tune request instructions
       * \param chan the channel index 0 to N-1
       * \return a tune result with the actual frequencies
       */
      virtual ::uhd::tune_result_t set_center_freq
        (const ::uhd::tune_request_t tune_request, size_t chan = 0) = 0;

      /*!
       * Tune the usrp device to the desired center frequency.
       * This is a wrapper around set center freq so that in this case,
       * the user can pass a single frequency in the call through swig.
       * \param freq the desired frequency in Hz
       * \param chan the channel index 0 to N-1
       * \return a tune result with the actual frequencies
       */
      ::uhd::tune_result_t set_center_freq(double freq, size_t chan = 0)
      {
        return set_center_freq(::uhd::tune_request_t(freq), chan);
      }

      /*!
       * Get the center frequency.
       * \param chan the channel index 0 to N-1
       * \return the frequency in Hz
       */
      virtual double get_center_freq(size_t chan = 0) = 0;

      /*!
       * Get the tunable frequency range.
       * \param chan the channel index 0 to N-1
       * \return the frequency range in Hz
       */
      virtual ::uhd::freq_range_t get_freq_range(size_t chan = 0) = 0;

      /*!
       * Set the gain for the dboard.
       * \param gain the gain in dB
       * \param chan the channel index 0 to N-1
       */
      virtual void set_gain(double gain, size_t chan = 0) = 0;

      /*!
       * Set the named gain on the dboard.
       * \param gain the gain in dB
       * \param name the name of the gain stage
       * \param chan the channel index 0 to N-1
       */
      virtual void set_gain(double gain,
                            const std::string &name,
                            size_t chan = 0) = 0;

      /*!
       * Get the actual dboard gain setting.
       * \param chan the channel index 0 to N-1
       * \return the actual gain in dB
       */
      virtual double get_gain(size_t chan = 0) = 0;

      /*!
       * Get the actual dboard gain setting of named stage.
       * \param name the name of the gain stage
       * \param chan the channel index 0 to N-1
       * \return the actual gain in dB
       */
      virtual double get_gain(const std::string &name,
                              size_t chan = 0) = 0;

      /*!
       * Get the actual dboard gain setting of named stage.
       * \param chan the channel index 0 to N-1
       * \return the actual gain in dB
       */
      virtual std::vector<std::string> get_gain_names(size_t chan = 0) = 0;

      /*!
       * Get the settable gain range.
       * \param chan the channel index 0 to N-1
       * \return the gain range in dB
       */
      virtual ::uhd::gain_range_t get_gain_range(size_t chan = 0) = 0;

      /*!
       * Get the settable gain range.
       * \param name the name of the gain stage
       * \param chan the channel index 0 to N-1
       * \return the gain range in dB
       */
      virtual ::uhd::gain_range_t get_gain_range(const std::string &name,
                                                 size_t chan = 0) = 0;

      /*!
       * Set the antenna to use.
       * \param ant the antenna string
       * \param chan the channel index 0 to N-1
       */
      virtual void set_antenna(const std::string &ant,
                               size_t chan = 0) = 0;

      /*!
       * Get the antenna in use.
       * \param chan the channel index 0 to N-1
       * \return the antenna string
       */
      virtual std::string get_antenna(size_t chan = 0) = 0;

      /*!
       * Get a list of possible antennas.
       * \param chan the channel index 0 to N-1
       * \return a vector of antenna strings
       */
      virtual std::vector<std::string> get_antennas(size_t chan = 0) = 0;

      /*!
       * Set the bandpass filter on the RF frontend.
       * \param bandwidth the filter bandwidth in Hz
       * \param chan the channel index 0 to N-1
       */
      virtual void set_bandwidth(double bandwidth, size_t chan = 0) = 0;

      /*!
       * Get the bandpass filter setting on the RF frontend.
       * \param chan the channel index 0 to N-1
       * \return bandwidth of the filter in Hz
       */
      virtual double get_bandwidth(size_t chan = 0) = 0;

      /*!
       * Get the bandpass filter range of the RF frontend.
       * \param chan the channel index 0 to N-1
       * \return the range of the filter bandwidth in Hz
       */
      virtual ::uhd::freq_range_t get_bandwidth_range(size_t chan = 0) = 0;

      /*!
       * Set a constant DC offset value.
       * The value is complex to control both I and Q.
       * \param offset the dc offset (1.0 is full-scale)
       * \param chan the channel index 0 to N-1
       */
      virtual void set_dc_offset(const std::complex<double> &offset,
                                 size_t chan = 0) = 0;

      /*!
       * Set the RX frontend IQ imbalance correction.
       * Use this to adjust the magnitude and phase of I and Q.
       *
       * \param correction the complex correction (1.0 is full-scale)
       * \param chan the channel index 0 to N-1
       */
      virtual void set_iq_balance(const std::complex<double> &correction,
                                  size_t chan = 0) = 0;

      /*!
       * Get an RF frontend sensor value.
       * \param name the name of the sensor
       * \param chan the channel index 0 to N-1
       * \return a sensor value object
       */
      virtual ::uhd::sensor_value_t get_sensor(const std::string &name,
                                               size_t chan = 0) = 0;

      /*!
       * Get a list of possible RF frontend sensor names.
       * \param chan the channel index 0 to N-1
       * \return a vector of sensor names
       */
      virtual std::vector<std::string> get_sensor_names(size_t chan = 0) = 0;

      //! DEPRECATED use get_sensor
      ::uhd::sensor_value_t get_dboard_sensor(const std::string &name,
                                              size_t chan = 0)
      {
        return this->get_sensor(name, chan);
      }

      //! DEPRECATED use get_sensor_names
      std::vector<std::string> get_dboard_sensor_names(size_t chan = 0)
      {
        return this->get_sensor_names(chan);
      }

      /*!
       * Get a motherboard sensor value.
       * \param name the name of the sensor
       * \param mboard the motherboard index 0 to M-1
       * \return a sensor value object
       */
      virtual ::uhd::sensor_value_t get_mboard_sensor(const std::string &name,
                                                      size_t mboard = 0) = 0;

      /*!
       * Get a list of possible motherboard sensor names.
       * \param mboard the motherboard index 0 to M-1
       * \return a vector of sensor names
       */
      virtual std::vector<std::string> get_mboard_sensor_names(size_t mboard = 0) = 0;

      /*!
       * Set the clock configuration.
       * DEPRECATED for set_time/clock_source.
       * \param clock_config the new configuration
       * \param mboard the motherboard index 0 to M-1
       */
      virtual void set_clock_config(const ::uhd::clock_config_t &clock_config,
                                    size_t mboard = 0) = 0;

      /*!
       * Set the time source for the usrp device.
       * This sets the method of time synchronization,
       * typically a pulse per second or an encoded time.
       * Typical options for source: external, MIMO.
       * \param source a string representing the time source
       * \param mboard which motherboard to set the config
       */
      virtual void set_time_source(const std::string &source,
                                   const size_t mboard = 0) = 0;

      /*!
       * Get the currently set time source.
       * \param mboard which motherboard to get the config
       * \return the string representing the time source
       */
      virtual std::string get_time_source(const size_t mboard) = 0;

      /*!
       * Get a list of possible time sources.
       * \param mboard which motherboard to get the list
       * \return a vector of strings for possible settings
       */
      virtual std::vector<std::string> get_time_sources(const size_t mboard) = 0;

      /*!
       * Set the clock source for the usrp device.
       * This sets the source for a 10 Mhz reference clock.
       * Typical options for source: internal, external, MIMO.
       * \param source a string representing the clock source
       * \param mboard which motherboard to set the config
       */
      virtual void set_clock_source(const std::string &source,
                                    const size_t mboard = 0) = 0;

      /*!
       * Get the currently set clock source.
       * \param mboard which motherboard to get the config
       * \return the string representing the clock source
       */
      virtual std::string get_clock_source(const size_t mboard) = 0;

      /*!
       * Get a list of possible clock sources.
       * \param mboard which motherboard to get the list
       * \return a vector of strings for possible settings
       */
      virtual std::vector<std::string> get_clock_sources(const size_t mboard) = 0;

      /*!
       * Get the master clock rate.
       * \param mboard the motherboard index 0 to M-1
       * \return the clock rate in Hz
       */
      virtual double get_clock_rate(size_t mboard = 0) = 0;

      /*!
       * Set the master clock rate.
       * \param rate the new rate in Hz
       * \param mboard the motherboard index 0 to M-1
       */
      virtual void set_clock_rate(double rate, size_t mboard = 0) = 0;

      /*!
       * Get the current time registers.
       * \param mboard the motherboard index 0 to M-1
       * \return the current usrp time
       */
      virtual ::uhd::time_spec_t get_time_now(size_t mboard = 0) = 0;

      /*!
       * Get the time when the last pps pulse occured.
       * \param mboard the motherboard index 0 to M-1
       * \return the current usrp time
       */
      virtual ::uhd::time_spec_t get_time_last_pps(size_t mboard = 0) = 0;

      /*!
       * Sets the time registers immediately.
       * \param time_spec the new time
       * \param mboard the motherboard index 0 to M-1
       */
      virtual void set_time_now(const ::uhd::time_spec_t &time_spec, size_t mboard = 0) = 0;

      /*!
       * Set the time registers at the next pps.
       * \param time_spec the new time
       */
      virtual void set_time_next_pps(const ::uhd::time_spec_t &time_spec) = 0;

      /*!
       * Sync the time registers with an unknown pps edge.
       * \param time_spec the new time
       */
      virtual void set_time_unknown_pps(const ::uhd::time_spec_t &time_spec) = 0;

      /*!
       * Set the time at which the control commands will take effect.
       *
       * A timed command will back-pressure all subsequent timed commands,
       * assuming that the subsequent commands occur within the time-window.
       * If the time spec is late, the command will be activated upon arrival.
       *
       * \param time_spec the time at which the next command will activate
       * \param mboard which motherboard to set the config
       */
      virtual void set_command_time(const ::uhd::time_spec_t &time_spec,
                                    size_t mboard = 0) = 0;

      /*!
       * Clear the command time so future commands are sent ASAP.
       *
       * \param mboard which motherboard to set the config
       */
      virtual void clear_command_time(size_t mboard = 0) = 0;

      /*!
       * Get access to the underlying uhd dboard iface object.
       * \return the dboard_iface object
       */
      virtual ::uhd::usrp::dboard_iface::sptr get_dboard_iface(size_t chan = 0) = 0;

      /*!
       * Get access to the underlying uhd device object.
       *
       * NOTE: This function is only available in C++.
       * \return the multi usrp device object
       */
      virtual ::uhd::usrp::multi_usrp::sptr get_device(void) = 0;

      /*!
       * Perform write on the user configuration register bus. These
       * only exist if the user has implemented custom setting
       * registers in the device FPGA.
       * \param addr 8-bit register address
       * \param data 32-bit register value
       * \param mboard which motherboard to set the user register
       */
      virtual void set_user_register(const uint8_t addr,
                                     const uint32_t data,
                                     size_t mboard = 0) = 0;
    };

  } /* namespace uhd */
} /* namespace gr */

#endif /* INCLUDED_GR_UHD_USRP_SINK_H */