322 lines
7.7 KiB
Markdown
322 lines
7.7 KiB
Markdown
# Run Config Reference
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`run_config.json` is the stable runtime configuration consumed by the GUI,
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Python helpers, and C++ pipeline binaries. The active file is normally
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`run_config.json`; root-level `*.example.json` files are templates.
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JSON does not support comments. Keep notes in docs, not inside config files.
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## Top-Level Sections
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```json
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{
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"radar": {},
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"switches": {},
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"run": {},
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"preprocess": {},
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"gpr": {},
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"rings": {}
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}
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```
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## `radar`
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Selects the radar model and sweep settings.
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```json
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"radar": {
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"model": "compact_m_k209",
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"serial": "",
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"remote_host": "127.0.0.1",
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"remote_port": 50209,
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"driver_mode": "native",
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"mock_signal_hz": 5000000.0,
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"multi_device": {},
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"sweep": {}
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}
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```
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Fields:
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| Field | Meaning |
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| --- | --- |
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| `model` | `librevna`, `librevna_multi`, or `compact_m_k209`. |
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| `serial` | LibreVNA serial. Empty means first device for single LibreVNA. For `librevna_multi`, this is the master serial. |
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| `remote_host` | K209 remote server host. Used by `compact_m_k209`; ignored by LibreVNA modes. |
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| `remote_port` | K209 remote server TCP port. Default is `50209`. |
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| `driver_mode` | `native` for hardware, `mock` for supported synthetic LibreVNA modes. K209 requires `native`. |
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| `mock_signal_hz` | Existing LibreVNA mock signal parameter used by C++ mock acquisition. |
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| `multi_device` | Extra settings for `librevna_multi`. |
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| `sweep` | Frequency, point count, IFBW, and power settings. |
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### `radar.sweep`
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```json
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"sweep": {
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"start_hz": 1000000.0,
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"stop_hz": 6000000000.0,
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"points": 201,
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"if_bandwidth_hz": 50000.0,
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"stimulus_power_dbm": -10.0
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}
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```
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Fields:
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| Field | Meaning |
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| --- | --- |
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| `start_hz` | Sweep start frequency in Hz. |
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| `stop_hz` | Sweep stop frequency in Hz. Must be `>= start_hz`. |
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| `points` | Number of frequency points. |
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| `if_bandwidth_hz` | IF bandwidth in Hz. |
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| `stimulus_power_dbm` | Output power in dBm. |
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K209 limits reported by the tested device:
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```text
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frequency_hz: 9000 .. 9000000000
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ifbw_hz: 1 .. 300000
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power_dbm: -55 .. +5
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points: 2 .. 500001
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```
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### `radar.multi_device`
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Used only when `radar.model == "librevna_multi"`.
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```json
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"multi_device": {
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"slave_serials": [
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"SLAVE_SERIAL_1",
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"SLAVE_SERIAL_2"
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],
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"force_external_reference": true,
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"recovery_attempts": 3
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}
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```
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Fields:
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| Field | Meaning |
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| --- | --- |
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| `slave_serials` | Exactly two slave LibreVNA serials. |
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| `force_external_reference` | Configure the synchronized external reference path. |
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| `recovery_attempts` | Reopen/retry attempts after native multi-device acquisition errors. |
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## `switches`
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Two RF switch sections are used:
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```json
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"switches": {
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"port1": {},
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"port2": {}
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}
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```
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By convention in the C++ pipeline:
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```text
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port1 -> output switch
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port2 -> input switch
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```
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Switch fields:
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| Field | Meaning |
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| --- | --- |
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| `name` | Human-readable switch name. |
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| `driver_mode` | `native` for GPIO, `mock` to avoid GPIO access. |
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| `driver` | `h7992` or `hmc349a`. |
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| `radar_port` | Physical radar port mapping, must be unique and either `1` or `2`. |
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| `positions` | Number of switch positions. |
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| `default_position` | Position selected on open. Zero-based. |
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| `gpio_chip` | Linux GPIO chip path, usually `/dev/gpiochip0`. |
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| `pin_a` | First GPIO control pin. |
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| `pin_b` | Second GPIO control pin for `h7992`. |
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| `invert_logic` | Logic inversion for supported switch drivers. |
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Use mock switches on a laptop without GPIO:
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```json
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"driver_mode": "mock"
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```
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## `run`
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Runtime behavior and combo selection.
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```json
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"run": {
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"settling_ms": 0,
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"idle_sleep_ms": 2,
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"continuous": true,
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"processing_live_config_path": "python_app/runtime/processing_live.json",
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"locator_server": {},
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"combos": [
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{"input": 0, "output": 0}
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]
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}
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```
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Fields:
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| Field | Meaning |
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| --- | --- |
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| `settling_ms` | Delay after switching before measuring. |
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| `idle_sleep_ms` | Sleep between continuous collections. |
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| `continuous` | `true` loops until stopped; `false` captures one collection and exits. |
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| `processing_live_config_path` | Runtime path used by processing live settings. |
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| `locator_server` | Embedded TCP server settings for publishing locator results. |
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| `combos` | Zero-based switch combinations to acquire. |
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`combos` entries use input/output switch positions:
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```json
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{"input": 2, "output": 1}
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```
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For `librevna_multi`, the model constraints force the canonical virtual matrix:
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```text
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input: 0..3
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output: 0..1
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```
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## `run.locator_server`
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Settings for the embedded locator result TCP server.
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| Field | Meaning |
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| --- | --- |
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| `device_id` | Device identifier in locator payloads. |
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| `protocol_version` | Locator payload protocol version. |
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| `host` | Bind host, commonly `0.0.0.0`. |
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| `port` | TCP port, commonly `8888`. |
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| `max_payload_bytes` | Maximum result payload size. |
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| `client_queue_size` | Per-client queue size. |
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| `logger_name` | Logger name used by the service. |
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## `preprocess`
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Names or bundle paths for calibration/reference assets used by preprocessing.
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```json
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"preprocess": {
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"s21": {
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"calibration": {"set_name": "", "bundle_path": ""},
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"reference": {"set_name": "", "bundle_path": ""}
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},
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"s11": {
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"calibration": {
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"open": {"set_name": "", "bundle_path": ""},
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"short": {"set_name": "", "bundle_path": ""},
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"load": {"set_name": "", "bundle_path": ""}
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},
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"reference": {"set_name": "", "bundle_path": ""}
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},
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"notch": {
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"enabled": true,
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"bands_hz": [],
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"taper_width_hz": 40000000.0,
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"taper_type": "cosine"
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}
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}
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```
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`set_name` selects a stored set for the active radar key. `bundle_path` can
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point to an exported bundle. Empty values mean no asset is selected.
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`notch.bands_hz` is a list of `[low_hz, high_hz]` ranges. `taper_type` is
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`cosine` or `hard`.
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## `gpr`
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GPR geometry and processing configuration.
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```json
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"gpr": {
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"relative_permittivity": 1.0,
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"tx_geometry": [
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{"output_pos": 0, "x_m": 0.905}
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],
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"rx_geometry": [
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{"input_pos": 0, "x_m": -0.18}
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]
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}
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```
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Fields:
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| Field | Meaning |
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| --- | --- |
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| `relative_permittivity` | Medium relative permittivity used for propagation speed. |
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| `tx_geometry` | Transmitter positions keyed by output switch position. |
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| `rx_geometry` | Receiver positions keyed by input switch position. |
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Geometry positions must match configured switch positions. For example, an
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`output_pos` of `1` requires the output switch to have at least 2 positions.
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## `rings`
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Shared-memory ring endpoints used by native processes.
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```json
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"rings": {
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"raw": {"name": "/radar_raw", "capacity": 50, "slot_size_bytes": 2097152},
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"raw_tap": {"name": "/radar_raw_tap", "capacity": 50, "slot_size_bytes": 2097152},
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"preprocessed": {"name": "/radar_preprocessed", "capacity": 50, "slot_size_bytes": 2097152},
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"preprocessed_tap": {"name": "/radar_preprocessed_tap", "capacity": 50, "slot_size_bytes": 2097152},
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"results": {"name": "/radar_results", "capacity": 50, "slot_size_bytes": 2097152}
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}
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```
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Fields:
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| Field | Meaning |
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| --- | --- |
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| `name` | POSIX shared-memory object name. |
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| `capacity` | Number of slots. |
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| `slot_size_bytes` | Maximum serialized payload size per slot. |
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Use unique ring names for parallel tests to avoid collisions with a running GUI
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session.
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## Minimal Model Examples
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Single LibreVNA:
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```json
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"radar": {
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"model": "librevna",
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"serial": "",
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"driver_mode": "native"
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}
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```
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Multi-device LibreVNA:
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```json
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"radar": {
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"model": "librevna_multi",
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"serial": "MASTER_SERIAL",
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"driver_mode": "native",
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"multi_device": {
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"slave_serials": ["SLAVE_1", "SLAVE_2"],
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"force_external_reference": true,
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"recovery_attempts": 3
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}
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}
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```
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Compact-M K209 via remote server:
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```json
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"radar": {
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"model": "compact_m_k209",
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"remote_host": "192.168.1.10",
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"remote_port": 50209,
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"driver_mode": "native"
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}
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```
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