UHD 4.11.0.0-rc1

UHD 4.11.0.0 Release Candidate 1

• Highlights / Main Changes
  • Add support for the new USRP B310, a PCIe/Thunderbolt-based device which
    supports 2x2 RF channels at up to 100 MHz bandwidth per channel.
  • Update underlying OE version on embedded devices to Scarthgap (5.0 LTS).
    Note that some of the MPM updates require this update.
  • Migrated the MPM RPC transport layer from mprpc (msgpack-RPC) to gRPC/Protobuf,
    impacting all embedded devices running MPM.
• New Features
  • X440:
    • The X440_X4_200 image now uses fabric resamplers instead of RFDC
      resamplers, which ensures repeatable phase offsets between devices and
      reboots. Note that this feature is currently mutually exclusive with dual
      rate support, and it increases the resource utilization. To revert to the
      previous image with non-repeatable phase offsets, a custom image must be
      built. By default, it is set to false (i.e., same as old behavior),
      except for the X440_X4_200 image.
    • A new BSP parameter (USE_FABRIC_RESAMPLERS) is introduced to toggle this
      new feature.
  • X4xx: The ref_locked sensor no longer queries the sticky bits; instead, it
    only reports the current lock state. The ref_stable sensor is added to
    include the sticky bits.
  • Python:
    • The ref_clk_calibration feature is now accessible in the Python API.
  • Streamers:
    • Added get_stream_info() API call to streamers, which allows reading out
      internal information about streamer objects.
  • RFNoC:
    • Added support for RFNoC 2.0 control operations, including block
      read/write, poll, and burst read/write operations.
    • Control packet sequence number width was increased to 8 bits, which
      improves stability in environments with high packet loss or reordering
      (e.g., in WSL containers). Note that this is a break in the protocol version;
      Wireshark dissectors have been updated (but old dissectors will no
      longer work).
    • RFNoC control packets no longer require unnecessary dummy data words,
      improving control interface efficiency.
    • Improve ability to control the block CHDR width (aside from the regular
      CHDR width).
    • Allow parallel initialization of RFNoC-based devices for faster session
      start when using multiple USRPs in a multi_usrp or rfnoc_graph object.
    • Wideband DDC/DUC:
      • Updated the RFNoC DDC and DUC blocks to support bandwidths > 200 MHz.
        With this update, users can add the DDC and DUC blocks to their custom
        FPGA images for bandwidths up to 1600 MHz (2000 MSps).
    • Shipping FPGA images:
      • Added DDC and DUC functionality for all channels to the following
        shipping FPGA images:
        • x410_X4_400
        • x410_CG_400
        • x420_X4_1000
        • x420_CG_1000
        • x440_X4_1600
        • x440_CG_1600
          For custom designs based on one of these updated rfnoc_image_core.yml
          files, please note that the new addition of the DDC/DUC blocks to FPGA
          images will have an impact on how much custom logic can fit into these
          designs. If needed the DDC/DUC blocks can be removed to revert to the
          previous behavior.
  • MPM-based devices can now be initialized in parallel within a MultiUSRP
    session.
  • X420:
    • Added support for the 400 MHz FPGA variants, including the X420_CG_400
      and X420_X4_400 images.
    • Added fabric-resampler support to the X420 FPGA designs.
  • GPS:
    • Added support for UBLOX communication.
    • Improved compatibility with GPS receivers by accepting additional
      constellation messages and handling device-specific message timing.
  • Embedded devices: Migrated thermal/fan sensor handling to hwmon/sysfs. This
    requires the embedded OS to be at least Scarthgap.
• Bug Fixes
  • Fixed an X420 power-up issue caused by glitchy power readouts.
  • Improved X4xx clock initialization and reference-lock handling, including
    recovery from reference-clock glitches between UHD sessions.
  • X4xx ADC self-calibration now honors skip_adc_selfcal during clock
    reconfiguration.
  • Fixed device filtering for image loading and other callers of
    device-specific find_t implementations, including serial-based image
    updates.
  • Improved GPS message parsing and receive-buffer handling.
  • Corrected the exit status reported by uhd_images_downloader on errors.
  • RFNoC now reports the detected and expected RFNoC versions when a version
    mismatch is encountered.
  • Fixed rfnoc_modtool make-yaml; it produced an incorrect make_var entry.
  • Many other, minor bug fixes (see commit list for details).
• API Changes
  • All usage of boost::optional within the library has been removed. Public APIs
    that used boost::optional are retained, but marked as deprecated.
  • Some logging APIs that previously used boost::posix_time are now
    declared deprecated, and alternatives that use standard C++ constructs have
    been introduced.
  • MPM device initialization is parallel by default. The serialize_init=1
    device argument restores serial initialization.
  • Added an option to resynchronize X4xx SPLL R-dividers after reference-lock
    loss using reset_spll_r_divider=1 in the synchronization arguments. This
    is intended for advanced users only.
  • Minor DDC/DUC C++ API changes as part of the Wideband DDC/DUC update.
• FPGA
  • Many improvements to resource utilization for improved build success rate
    and compilation time.
  • Enabled usage of VHDL 2008.
• Codebase Management
  • Fully removed Boost.Thread, Boost.Date_Time, and Boost.Chrono dependencies
    for libuhd. Other Boost usage has been reduced.
  • Improved compatibility with newer compiler versions (e.g., gcc16).
  • MPM RPC transport migrated from mprpc (msgpack-RPC) to gRPC/Protobuf.
    The mprpc Python dependency is replaced by grpcio. On Linux, the host
    build-time dependencies are libgrpc++-dev, libprotobuf-dev, and
    protobuf-compiler-grpc. On Windows, there are no prebuilt distro packages,
    so gRPC and Protobuf (including the grpc_cpp_plugin code-generation plugin)
    must be obtained either by building from source (https://github.com/grpc/grpc)
    or via a package manager such as vcpkg.
  • Improved build reproducibility by removing the build-directory path from
    embedded build information.
• Validated OS Environments
  (Versions for build and runtime dependencies can be determined from the
  docker container definitions in the UHD repository at .ci/docker/...)
  • Linux:
    • Ubuntu: jammy (22.04), noble (24.04), resolute (26.04)
    • Fedora: 41, 42, 43
  • Windows: 10 22H2, 11 24H2
  • MacOS: Sequoia (15.7)