bdcde92afa
There were some rare corner cases where the EOB could get lost in the DUC due to the dds_timed logic not always passing it through as it should. This resulted in an underflow error message at the end of transmission. This commit also fixes an issue where part of the last packet used a frequency shift of 0 instead of the requested frequency shift, and an issue where the first few samples of a burst used the wrong frequency shift value. Part of the fix includes adding a TUSER port to dds_sin_cos_lut_only. The TUSER port is built into the IP but was disabled. It is now enabled and set to 1 bit wide. This has a very small effect on resource usage and can be left unconnected when not needed. The dds_freq_tune block was shared by the DUC and DDC. To avoid affecting the DDC, a new version, dds_freq_tune_duc, is being added for the DUC to use that has the necessary fixes. The new dds_wrapper.v is a wrapper for the dds_sin_cos_lut_only IP. This IP has the undesirable behavior that new inputs must be provided to push previous outputs through the IP. This wrapper hides that complexity by adding some logic to ensure all data gets pushed through automatically. This logic uses the TUSER port on the IP. Finally, a testbench for dds_timed was added. |
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| .github | ||
| firmware | ||
| fpga | ||
| host | ||
| images | ||
| mpm | ||
| tools | ||
| .clang-format | ||
| .clang-tidy | ||
| .gitignore | ||
| .gitmodules | ||
| CHANGELOG | ||
| CODING.md | ||
| CONTRIBUTING.md | ||
| LICENSE.md | ||
| README.md | ||
USRP Hardware Driver (UHD™) Software
Welcome to the UHD™ software distribution! UHD is the free & open-source software driver and API for the Universal Software Radio Peripheral (USRP™) SDR platform, created and sold by Ettus Research.
UHD supports all Ettus Research USRP™ hardware, including all motherboards and daughterboards, and the combinations thereof.
Documentation
For technical documentation related to USRP™ hardware or UHD system design, check out the UHD and USRP Manual. That is where you can find Installation Instructions, help on how to build UHD from source on different platforms, development guidelines and reference documentation as well as device usage guidance.
Additionally, be sure to check out the Ettus Research FAQ, and the Knowledge Base for useful application notes and tutorials.
OS Support
UHD is primarily developed on Linux, but we also test and support the following operating systems.
- Linux (Fedora and Ubuntu)
- Mac OS X (Intel)
- Windows 10
Other operating systems will most likely work, too, but are not officially supported.
Applications
UHD can be used to build stand-alone applications with USRP™ hardware, or with third-party applications. Some common toolkits / frameworks are:
- GNU Radio
- NI LabVIEW
- MathWorks Simulink
- REDHAWK
- OpenBTS GSM
- Osmocom GSM
- Amarisoft LTE
- Software Radio Systems LTE
Directories
host/
The source code for the user-space driver.
mpm/
The source code for the module peripheral manager (MPM). This is code that is run on embedded devices.
firmware/
The source code for all microprocessors in USRP hardware.
fpga/
The source code for the UHD FPGA images.
images/
This contains the package builder for FPGA and firmware images. We provide other tools to download image packages, the scripts in here are mainly relevant for UHD maintainers and -developers.
tools/
Additional tools, mainly for debugging purposes. See the readme-file in that directory for more details on the individual tools.