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Wade Fife d0a97670fa docs: rfnoc: Increase Ctrl SeqNum to 8 bits 
This change updates the RFNoC specification to increase the SeqNum
field from 6 bits to 8 bits. This helps reduce control packet response
sequence number aliasing in cases where packets may be dropped or
reordered. To make this change while keeping the implementation
efficient, the control packet fields have been rearranged to place the
most critical information first and to avoid splitting fields across
word boundaries.

Additionally, compared to the previous version of the specification (as
of UHD 4.10), a new ReqSize field has been added. This field represents
the read request size.

The DataLength field that briefly existed in the change history has
been removed. In the new version, NumData represents the number of data
words present in the control packet (the same meaning as in the
original RFNoC specification), while ReqSize indicates the number of
words requested to be read. This means that a large read request can be
issued without including dummy data in the request (e.g., ReqSize = 15
while NumData = 0).

See separate commits for the corresponding FPGA and host code changes.
2026-07-28 14:24:19 +02:00
..
cmake host: cmake: add gprc/protobuf min version 2026-07-28 14:10:47 +02:00
docs docs: rfnoc: Increase Ctrl SeqNum to 8 bits 2026-07-28 14:24:19 +02:00
examples examples: Fix cleanup waterfall memory leak in rx_samples_c 2026-07-28 09:23:21 +02:00
include rfnoc_image_core: configurable CHDR block width per streaming endpoint 2026-07-28 09:37:08 +02:00
lib host: Fix SPI pin offset for Port B 2026-07-24 13:48:00 +02:00
python rfnoc_image_core: configurable CHDR block width per streaming endpoint 2026-07-28 09:37:08 +02:00
tests host: fix intermittent "Socket closed" / "Invalid token" RPC failures 2026-07-24 10:13:27 +02:00
utils utils: Fix exit code on error in uhd_images_downloader 2026-06-15 14:02:51 +02:00
.gitignore Move ignore of build folders into top level 2025-07-18 11:19:52 +02:00
CMakeLists.txt host/mpm: replace mpRPC with gRPC transport 2026-07-09 12:12:04 +02:00
LICENSE uhd/host: clarifying LICENSE file 2014-04-10 12:44:42 -07:00
README.md host: fixed mailing list URL in readme 2025-01-21 08:08:56 +01:00
uhd.pc.in pkg-config: Remove boost_system library from linker flags 2025-09-24 11:35:07 +02:00

README.md

Host UHD™ Software Source Code

This directory tree contains the source code that builds the UHD software library on your host computer. This library contains the drivers for all Ettus Research products, and the framework and API that make them usable to application-level programs. The UHD library runs entirely in user-space.

Documentation

For documentation, please refer to the following resources:

For technical documentation related to our devices and UHD check out the UHD and USRP Manual.

Additionally, be sure to check out the Ettus Research FAQ, and the Knowledge Base for useful application notes and tutorials.

Support

If you have purchased an Ettus Research USRP™ product and need technical support using the device or using this UHD™ software, please e-mail the USRP-Users mailing list, which is where Ettus Research, and our community, provide support to users.

Note that you must be subscribed to the list in order to post a message to the list. This is to prevent spammers from just sending garbage messages out over the listserve.