OpenMoRFeus

Open implementation and technical documentation for controlling the Outernet moRFeus RF generator and frequency mixer through USB HID.

Installation

Create or activate a Python virtual environment and install the project:

python3 -m venv .venv
.venv/bin/python -m pip install -e .

The installed command is:

.venv/bin/openmorfeus --help

USB access without root privileges

OpenMoRFeus includes a udev rule for the Outernet moRFeus USB HID identifiers 10c4:eac9.

Install it with:

sudo install -m 0644       packaging/udev/99-openmorfeus.rules       /etc/udev/rules.d/99-openmorfeus.rules

sudo udevadm control --reload-rules
sudo udevadm trigger

Disconnect and reconnect the moRFeus after installing the rule.

The device can then be accessed without running the Python application as root.

Project objectives

• Document the moRFeus USB HID protocol.
• Provide a modern Python API.
• Provide a command-line interface.
• Restore compatibility with legacy software.
• Integrate moRFeus into automated RF test benches.

Current status

• USB device enumeration confirmed.
• HID read communication confirmed.
• HID write communication confirmed.
• Frequency control confirmed.
• GET frame format documented.
• SET frame format documented.
• Function selectors 0x81 through 0x85 validated.
• Textual error response observed.
• Modern Python driver.
• Command-line interface.
• Responsive PyQt6 graphical interface.
• Safe frequency sweep generator with automatic restoration.
• Automated unit tests and GitHub Actions CI.
• Legacy morfeus_tool compatibility layer.
• Automated hardware-in-the-loop tests with a physical moRFeus.
• RF laboratory integration.

Device identity

Repository layout

OpenMoRFeus/

• README.md
• docs/
  • HID_PROTOCOL_SPEC.md
  • ENGINEERING_LOG.md
• experiments/
• src/
  • openmorfeus/
    • init.py
• tests/

Safety note

Selector 0x86, historically named Firmware Mode, has not been tested with a SET operation. It may cause a reset or place the device in a firmware-update state. It must not be exercised until a recovery procedure is established.

License

OpenMoRFeus is released under the MIT License. See LICENSE for the complete terms.

Command-line interface

OpenMoRFeus includes a command-line interface for the documented moRFeus controls.

openmorfeus state
openmorfeus get frequency
openmorfeus get mode

openmorfeus set frequency 1350MHz
openmorfeus set mode generator
openmorfeus set mixer-current 0
openmorfeus set bias-tee off
openmorfeus set lcd-timeout always-on

Bare frequency values are interpreted as MHz. Explicit Hz, kHz, MHz, and GHz units are supported.

The historical selectors 0x00 and 0x86 are intentionally not exposed.

Graphical interface

Install the optional PyQt6 dependency and launch the GUI:

python -m pip install -e '.[gui]'
openmorfeus-gui

Hardware transactions run outside the graphical event loop. The GUI exposes only the documented controls. Historical selectors 0x00 and 0x86 remain unavailable.

Sweep generator

The graphical interface includes a responsive frequency-sweep dialog with:

• validated start, stop, and step frequencies;
• configurable dwell time;
• live progress and current-frequency display;
• pause, resume, and stop control;
• automatic restoration of the initial frequency.

The sweep runs outside the Qt event thread. Closing the dialog during execution requests a controlled stop before the window is closed.