scopy-component-relationships

Development

How Scopy libraries depend on each other, plugin commonalities, MessageBroker topics, shared widgets, style system flow, and build system relationships. Loaded when determining component interactions or change impact.

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Scopy Component Relationships

Library Dependency Graph

                    ┌──────────────┐
                    │  scopy-core  │
                    └──────┬───────┘
           ┌───────────────┼───────────────────┐
           │               │                   │
    ┌──────▼───────┐ ┌─────▼──────┐ ┌──────────▼──────────┐
    │scopy-pluginbase│ │ scopy-gui │ │ scopy-pkg-manager   │
    └──────┬───────┘ └─────┬──────┘ └─────────────────────┘
           │               │
    ┌──────▼───────────────▼──────┐
    │       scopy-common          │
    └──────┬──────────────────────┘
           │
    ┌──────▼───────┐    ┌────────────────────┐
    │ scopyiioutil  │◄───│  scopy-iio-widgets │
    └──────────────┘    └────────────────────┘
                              │
                        ┌─────▼──────┐
                        │scopy-gr-util│
                        └────────────┘

Detailed link dependencies:

Library	Links Against
`scopy-common`	Qt Core/Widgets/Concurrent
`scopyiioutil`	Qt Widgets, libiio, libserialport
`scopy-gui`	scopy-common, scopy-pluginbase, QWT, Boost, Qt Widgets/Xml/Svg
`scopy-gr-util`	scopy-iioutil, scopy-gui, scopy-iio-widgets, Gnuradio (runtime/analog/blocks/fft/filter/pmt/iio), Genalyzer
`scopy-pluginbase`	scopy-common, scopyiioutil, Qt Core/Widgets/Concurrent/Qml, libiio
`scopy-iio-widgets`	scopy-gui, scopyiioutil, libiio, Qt Core/Widgets
`scopy-pkg-manager`	Qt Core
`scopy-core`	all above, Python3, libsigrokdecode, Qt Core/Widgets/Concurrent/Network

Plugin Pattern Families

Device Plugins (hardware-specific)

Packages: ad936x, ad9371, adrv9002, adrv9009, apollo-ad9084, cn0511, daq2, fmcomms11, swiot, pqmon, imu, rfpowermeter

Common patterns:

compatible() checks IIO context for specific device names
Use IIOWidgetBuilder extensively for attribute controls
Create instrument/tool classes per device feature
Often have gain widgets, frequency controls, calibration sections
Use CyclicalTask/PingTask for device monitoring
API class exposes Q_INVOKABLE methods for test automation

Generic Plugins

Package: generic-plugins Plugins: ADC, DAC, Datalogger, Debugger, Regmap, JESD Status

Common patterns:

Work with any IIO device (not device-specific compatible())
ADC/DAC use GNU Radio pipeline (gr-util dependency)
Debugger/Regmap are register-level tools
Datalogger handles data recording across devices

Utility Plugins

Package: extproc (external processor), test-plugins

Patterns:

extproc: External process management, plot management
test-plugins: Development/testing utilities (default OFF)

MessageBroker Topics

The MessageBroker is a singleton pub/sub system. All plugins auto-subscribe to "broadcast".

Known topic conventions:

Topic names typically match plugin class names (e.g., "TestPlugin", "TestPlugin2")
"broadcast" — default topic, all plugins receive
Device-specific topics for cross-plugin coordination

Usage pattern:

// Publisher plugin
MessageBroker::GetInstance()->publish("MyPlugin", "calibration_complete");

// Subscriber plugin (in constructor or init)
MessageBroker::GetInstance()->subscribe(this, "MyPlugin");

// Receive
void messageCallback(QString topic, QString message) override {
    if(topic == "MyPlugin" && message == "calibration_complete") { /* react */ }
}

Shared IIOWidget Patterns

IIOWidgetBuilder is used across most device plugins. Common widget configurations:

Widget Type	Use Case	Plugins Using It
`RangeUi`	Numeric attributes (frequency, gain)	ad936x, adrv9002, adrv9009, generic ADC/DAC
`ComboUi`	Enumerated attributes (mode, filter)	ad936x, adrv9002, swiot, generic
`CheckBoxUi`	Boolean attributes (enable/disable)	swiot, pqmon
`EditableUi`	Free-form text attributes	debugger, regmap
`TemperatureUi`	Temperature with thresholds	imu, rfpowermeter

IIOWidgetGroup — groups widgets for batch read/write operations. Most plugins create one group per tool/section.

Style System Flow

JSON theme files → Style::getAttribute() / Style::getColor()
                 → Style::setStyle(widget, property)
                 → Style::setBackgroundColor(widget, color)

Key theme color categories:

Category	Values	Purpose
Background	`background_primary`, `background_subtle`, `background_secondary`, `background_plot`	Container backgrounds
Content	`content_default`, `content_subtle`, `content_silent`, `content_inverse`	Text and icons
Status	`content_success`, `content_error`, `content_busy`	Status indicators
Interactive	`interactive_primary_`, `interactive_subtle_`, `interactive_secondary_*`	Buttons, controls (idle/hover/pressed/disabled)
Special	`interactive_accent_idle`, `danger_default`, `interactive_focus`	Accent and danger states

Common style properties:

Style::setStyle(widget, style::properties::label::menuBig);
Style::setStyle(widget, style::properties::widget::border_interactive);
Style::setStyle(widget, style::properties::widget::basicBackground, true, true);
Style::setBackgroundColor(widget, json::theme::background_primary);

Build System Relationships

Package enable flags:

ENABLE_PACKAGE_<NAME> — uppercase name with dashes preserved
ENABLE_ALL_PACKAGES=ON — enables everything
Default ON for all except: TEST-PLUGINS (OFF), EXTPROC (OFF)

Plugin enable flags (within a package):

ENABLE_PLUGIN_<NAME> — individual plugin control
Defined by add_plugins() function in PackageUtils.cmake

Available packages (16 total): ad936x, ad9371, adrv9002, adrv9009, apollo-ad9084, cn0511, daq2, extproc, fmcomms11, generic-plugins, imu, m2k, pqmon, rfpowermeter, swiot, test-plugins

Cross-Cutting Concerns

Settings Persistence

Plugin-level: saveSettings(QSettings&) / loadSettings(QSettings&)
Global: Preferences::get/set() singleton
Both backed by QSettings (INI file format)

Device Connection State

DeviceImpl manages plugin lifecycle
m_connectedPlugins tracks which plugins are active
PingTask monitors device health
connectionLost() signal triggers reconnection/warning UI

ScopyJS (JavaScript Engine)

Enabled by default (ENABLE_SCOPYJS=ON)
API objects registered via ScopyJS::GetInstance()->registerApi()
Used for test automation and scripting
Each plugin can expose one API object