* ADR-081: adaptive CSI mesh firmware kernel + scaffolding
Introduces a 5-layer firmware kernel that reframes the existing ESP32
modules as components of a chipset-agnostic architecture and authorizes
adaptive control + a compact feature-state stream as the default upstream.
Layers:
L1 Radio Abstraction Layer — rv_radio_ops_t vtable + ESP32 binding
L2 Adaptive Controller — fast/medium/slow loops (200ms/1s/30s)
L3 Mesh Sensing Plane — anchor/observer/relay/coordinator (spec)
L4 On-device Feature Extr. — rv_feature_state_t (magic 0xC5110006)
L5 Rust handoff — feature_state default; debug raw gated
Files:
docs/adr/ADR-081-adaptive-csi-mesh-firmware-kernel.md (new)
firmware/esp32-csi-node/main/rv_radio_ops.h (new)
firmware/esp32-csi-node/main/rv_radio_ops_esp32.c (new)
firmware/esp32-csi-node/main/rv_feature_state.{h,c} (new)
firmware/esp32-csi-node/main/adaptive_controller.{h,c} (new)
firmware/esp32-csi-node/main/main.c (wire L1+L2)
firmware/esp32-csi-node/main/CMakeLists.txt (add 4 sources)
firmware/esp32-csi-node/main/Kconfig.projbuild (controller knobs)
CHANGELOG.md (Unreleased)
Default policy is conservative: enable_channel_switch and
enable_role_change are off, so behavior matches today's firmware
unless an operator opts in via menuconfig. The pure
adaptive_controller_decide() is exposed for offline unit tests.
Reuses (does not rewrite): csi_collector, edge_processing (ADR-039),
swarm_bridge (ADR-066), secure_tdm (ADR-032), wasm_runtime (ADR-040).
* ADR-081: implement Layers 1/2/4 end-to-end + host tests + QEMU hooks
Turns the ADR-081 scaffolding into a working adaptive CSI mesh kernel:
Layer 1 radio abstraction has an ESP32 binding and a mock binding; Layer 2
adaptive controller runs on FreeRTOS timers; Layer 4 feature-state packet
is emitted at 5 Hz by default, replacing raw ADR-018 CSI as the default
upstream.
New files:
firmware/esp32-csi-node/main/adaptive_controller_decide.c (pure policy)
firmware/esp32-csi-node/main/rv_radio_ops_mock.c (QEMU binding)
firmware/esp32-csi-node/tests/host/Makefile (host tests)
firmware/esp32-csi-node/tests/host/test_adaptive_controller.c
firmware/esp32-csi-node/tests/host/test_rv_feature_state.c
firmware/esp32-csi-node/tests/host/esp_err.h (shim)
firmware/esp32-csi-node/tests/host/.gitignore
Modified:
adaptive_controller.c — includes pure decide.c; emit_feature_state()
wired into fast loop (200 ms = 5 Hz)
rv_radio_ops_esp32.c — get_health() fills pkt_yield + send_fail
csi_collector.{c,h} — pkt_yield/send_fail accessors (ADR-081 L1)
rv_feature_state.h — packed size corrected to 60 bytes
(was incorrectly 80 in initial commit)
main.c — mock binding registered under mock CSI
CMakeLists.txt — rv_radio_ops_mock.c under CSI_MOCK_ENABLED
scripts/validate_qemu_output.py — 3 new ADR-081 checks (17/18/19)
docs/adr/ADR-081-*.md — status → Accepted (partial);
implementation-status matrix; measured
benchmarks (decide 3.2 ns, CRC32 614 ns);
bandwidth 300 B/s @ 5 Hz (99.7% vs raw);
verification section
CHANGELOG.md — artifact-level entries
Tests (host, gcc -O2 -std=c11):
test_adaptive_controller: 18/18 pass, decide() = 3.2 ns/call
test_rv_feature_state: 15/15 pass, CRC32(56 B) = 614 ns/pkt, 87 MB/s
sizeof(rv_feature_state_t) == 60 asserted
IEEE CRC32 known vectors verified
Deferred (tracked in ADR-081 roadmap Phase 3/4):
Layer 3 mesh-plane message types, role-assignment FSM, Rust-side mirror
trait in crates/wifi-densepose-hardware/src/radio_ops.rs.
* ADR-081: Layer 3 mesh plane + Rust mirror trait — all 5 layers landed
Fully implements the remaining deferred pieces of the adaptive CSI mesh
firmware kernel. All 5 layers (Radio Abstraction, Adaptive Controller,
Mesh Sensing Plane, On-device Feature Extraction, Rust handoff) are
now implemented and host-tested end-to-end.
Layer 3 — Mesh Sensing Plane (firmware/esp32-csi-node/main/rv_mesh.{h,c}):
* 4 node roles: Unassigned / Anchor / Observer / FusionRelay / Coordinator
* 7 message types: TIME_SYNC, ROLE_ASSIGN, CHANNEL_PLAN,
CALIBRATION_START, FEATURE_DELTA, HEALTH, ANOMALY_ALERT
* 3 auth classes: None / HMAC-SHA256-session / Ed25519-batch
* Payload types: rv_node_status_t (28 B), rv_anomaly_alert_t (28 B),
rv_time_sync_t (16 B), rv_role_assign_t (16 B),
rv_channel_plan_t (24 B), rv_calibration_start_t (20 B)
* 16-byte envelope + payload + IEEE CRC32 trailer
* Pure rv_mesh_encode()/rv_mesh_decode() plus typed convenience encoders
* rv_mesh_send_health() + rv_mesh_send_anomaly() helpers
Controller wiring (adaptive_controller.c):
* Slow loop (30 s default) now emits HEALTH
* apply_decision() emits ANOMALY_ALERT on transitions to ALERT /
DEGRADED
* Role + mesh epoch tracked in module state; epoch bumps on role
change
Layer 5 — Rust mirror (crates/wifi-densepose-hardware/src/radio_ops.rs):
* RadioOps trait mirrors rv_radio_ops_t vtable
* MockRadio backend for offline tests
* MeshHeader / NodeStatus / AnomalyAlert types mirror rv_mesh.h
* Byte-identical IEEE CRC32 (poly 0xEDB88320) verified against
firmware test vectors (0xCBF43926 for "123456789")
* decode_mesh / decode_node_status / decode_anomaly_alert / encode_health
* 8 unit tests, including mesh_constants_match_firmware which asserts
MESH_MAGIC/VERSION/HEADER_SIZE/MAX_PAYLOAD match rv_mesh.h
byte-for-byte
* Exported from lib.rs
* signal/ruvector/train/mat crates untouched — satisfies ADR-081
portability acceptance test
Tests (all passing):
test_adaptive_controller: 18/18 (C, decide() 3.2 ns/call)
test_rv_feature_state: 15/15 (C, CRC32 87 MB/s)
test_rv_mesh: 27/27 (C, roundtrip 1.0 µs)
radio_ops::tests (Rust): 8/8
--- total: 68/68 assertions green ---
Docs:
* ADR-081 status flipped to Accepted
* Implementation-status matrix updated; L3 + Rust mirror both
marked Implemented
* Benchmarks table extended with rv_mesh encode+decode roundtrip
* Verification section updated with cargo test invocation
* CHANGELOG: two new entries for L3 mesh plane + Rust mirror
Remaining follow-ups (Phase 3.5 polish, not blocking):
* Mesh RX path (UDP listener + dispatch) on the firmware
* Ed25519 signing for CHANNEL_PLAN / CALIBRATION_START
* Hardware validation on COM7
* Add test_rv_mesh to host-test .gitignore
Fixes an untracked-file warning from the repo stop-hook: the compiled
binary was built by make but the .gitignore update was missed in
|
||
|---|---|---|
| .. | ||
| ruv-neural | ||
| wifi-densepose-api | ||
| wifi-densepose-cli | ||
| wifi-densepose-config | ||
| wifi-densepose-core | ||
| wifi-densepose-db | ||
| wifi-densepose-desktop | ||
| wifi-densepose-hardware | ||
| wifi-densepose-mat | ||
| wifi-densepose-nn | ||
| wifi-densepose-ruvector | ||
| wifi-densepose-sensing-server | ||
| wifi-densepose-signal | ||
| wifi-densepose-train | ||
| wifi-densepose-vitals | ||
| wifi-densepose-wasm | ||
| wifi-densepose-wasm-edge | ||
| wifi-densepose-wifiscan | ||
| README.md | ||
README.md
WiFi-DensePose Rust Crates
See through walls with WiFi. No cameras. No wearables. Just radio waves.
A modular Rust workspace for WiFi-based human pose estimation, vital sign monitoring, and disaster response using Channel State Information (CSI). Built on RuVector graph algorithms and the WiFi-DensePose research platform by rUv.
Performance
| Operation | Python v1 | Rust v2 | Speedup |
|---|---|---|---|
| CSI Preprocessing | ~5 ms | 5.19 us | ~1000x |
| Phase Sanitization | ~3 ms | 3.84 us | ~780x |
| Feature Extraction | ~8 ms | 9.03 us | ~890x |
| Motion Detection | ~1 ms | 186 ns | ~5400x |
| Full Pipeline | ~15 ms | 18.47 us | ~810x |
| Vital Signs | N/A | 86 us (11,665 fps) | -- |
Crate Overview
Core Foundation
| Crate | Description | crates.io |
|---|---|---|
wifi-densepose-core |
Types, traits, and utilities (CsiFrame, PoseEstimate, SignalProcessor) |
|
wifi-densepose-config |
Configuration management (env, TOML, YAML) | |
wifi-densepose-db |
Database persistence (PostgreSQL, SQLite, Redis) |
Signal Processing & Sensing
| Crate | Description | RuVector Integration | crates.io |
|---|---|---|---|
wifi-densepose-signal |
SOTA CSI signal processing (6 algorithms from SpotFi, FarSense, Widar 3.0) | ruvector-mincut, ruvector-attn-mincut, ruvector-attention, ruvector-solver |
|
wifi-densepose-vitals |
Vital sign extraction: breathing (6-30 BPM) and heart rate (40-120 BPM) | -- | |
wifi-densepose-wifiscan |
Multi-BSSID WiFi scanning for Windows-enhanced sensing | -- |
Neural Network & Training
| Crate | Description | RuVector Integration | crates.io |
|---|---|---|---|
wifi-densepose-nn |
Multi-backend inference (ONNX, PyTorch, Candle) with DensePose head (24 body parts) | -- | |
wifi-densepose-train |
Training pipeline with MM-Fi dataset, 114->56 subcarrier interpolation | All 5 crates |
Disaster Response
| Crate | Description | RuVector Integration | crates.io |
|---|---|---|---|
wifi-densepose-mat |
Mass Casualty Assessment Tool -- survivor detection, triage, multi-AP localization | ruvector-solver, ruvector-temporal-tensor |
Hardware & Deployment
| Crate | Description | crates.io |
|---|---|---|
wifi-densepose-hardware |
ESP32, Intel 5300, Atheros CSI sensor interfaces (pure Rust, no FFI) | |
wifi-densepose-wasm |
WebAssembly bindings for browser-based disaster dashboard | |
wifi-densepose-sensing-server |
Axum server: ESP32 UDP ingestion, WebSocket broadcast, sensing UI |
Applications
| Crate | Description | crates.io |
|---|---|---|
wifi-densepose-api |
REST + WebSocket API layer | |
wifi-densepose-cli |
Command-line tool for MAT disaster scanning |
Architecture
wifi-densepose-core
(types, traits, errors)
|
+-------------------+-------------------+
| | |
wifi-densepose-signal wifi-densepose-nn wifi-densepose-hardware
(CSI processing) (inference) (ESP32, Intel 5300)
+ ruvector-mincut + ONNX Runtime |
+ ruvector-attn-mincut + PyTorch (tch) wifi-densepose-vitals
+ ruvector-attention + Candle (breathing, heart rate)
+ ruvector-solver |
| | wifi-densepose-wifiscan
+--------+---------+ (BSSID scanning)
|
+------------+------------+
| |
wifi-densepose-train wifi-densepose-mat
(training pipeline) (disaster response)
+ ALL 5 ruvector + ruvector-solver
+ ruvector-temporal-tensor
|
+-----------------+-----------------+
| | |
wifi-densepose-api wifi-densepose-wasm wifi-densepose-cli
(REST/WS) (browser WASM) (CLI tool)
|
wifi-densepose-sensing-server
(Axum + WebSocket)
RuVector Integration
All RuVector crates at v2.0.4 from crates.io:
| RuVector Crate | Used In | Purpose |
|---|---|---|
ruvector-mincut |
signal, train | Dynamic min-cut for subcarrier selection & person matching |
ruvector-attn-mincut |
signal, train | Attention-weighted min-cut for antenna gating & spectrograms |
ruvector-temporal-tensor |
train, mat | Tiered temporal compression (4-10x memory reduction) |
ruvector-solver |
signal, train, mat | Sparse Neumann solver for interpolation & triangulation |
ruvector-attention |
signal, train | Scaled dot-product attention for spatial features & BVP |
Signal Processing Algorithms
Six state-of-the-art algorithms implemented in wifi-densepose-signal:
| Algorithm | Paper | Year | Module |
|---|---|---|---|
| Conjugate Multiplication | SpotFi (SIGCOMM) | 2015 | csi_ratio.rs |
| Hampel Filter | WiGest | 2015 | hampel.rs |
| Fresnel Zone Model | FarSense (MobiCom) | 2019 | fresnel.rs |
| CSI Spectrogram | Standard STFT | 2018+ | spectrogram.rs |
| Subcarrier Selection | WiDance (MobiCom) | 2017 | subcarrier_selection.rs |
| Body Velocity Profile | Widar 3.0 (MobiSys) | 2019 | bvp.rs |
Quick Start
As a Library
use wifi_densepose_core::{CsiFrame, CsiMetadata, SignalProcessor};
use wifi_densepose_signal::{CsiProcessor, CsiProcessorConfig};
// Configure the CSI processor
let config = CsiProcessorConfig::default();
let processor = CsiProcessor::new(config);
// Process a CSI frame
let frame = CsiFrame { /* ... */ };
let processed = processor.process(&frame)?;
Vital Sign Monitoring
use wifi_densepose_vitals::{
CsiVitalPreprocessor, BreathingExtractor, HeartRateExtractor,
VitalAnomalyDetector,
};
let mut preprocessor = CsiVitalPreprocessor::new(56); // 56 subcarriers
let mut breathing = BreathingExtractor::new(100.0); // 100 Hz sample rate
let mut heartrate = HeartRateExtractor::new(100.0);
// Feed CSI frames and extract vitals
for frame in csi_stream {
let residuals = preprocessor.update(&frame.amplitudes);
if let Some(bpm) = breathing.push_residuals(&residuals) {
println!("Breathing: {:.1} BPM", bpm);
}
}
Disaster Response (MAT)
use wifi_densepose_mat::{DisasterResponse, DisasterConfig, DisasterType};
let config = DisasterConfig {
disaster_type: DisasterType::Earthquake,
max_scan_zones: 16,
..Default::default()
};
let mut responder = DisasterResponse::new(config);
responder.add_scan_zone(zone)?;
responder.start_continuous_scan().await?;
Hardware (ESP32)
use wifi_densepose_hardware::{Esp32CsiParser, CsiFrame};
let parser = Esp32CsiParser::new();
let raw_bytes: &[u8] = /* UDP packet from ESP32 */;
let frame: CsiFrame = parser.parse(raw_bytes)?;
println!("RSSI: {} dBm, {} subcarriers", frame.metadata.rssi, frame.subcarriers.len());
Training
# Check training crate (no GPU needed)
cargo check -p wifi-densepose-train --no-default-features
# Run training with GPU (requires tch/libtorch)
cargo run -p wifi-densepose-train --features tch-backend --bin train -- \
--config training.toml --dataset /path/to/mmfi
# Verify deterministic training proof
cargo run -p wifi-densepose-train --features tch-backend --bin verify-training
Building
# Clone the repository
git clone https://github.com/ruvnet/wifi-densepose.git
cd wifi-densepose/rust-port/wifi-densepose-rs
# Check workspace (no GPU dependencies)
cargo check --workspace --no-default-features
# Run all tests
cargo test --workspace --no-default-features
# Build release
cargo build --release --workspace
Feature Flags
| Crate | Feature | Description |
|---|---|---|
wifi-densepose-nn |
onnx (default) |
ONNX Runtime backend |
wifi-densepose-nn |
tch-backend |
PyTorch (libtorch) backend |
wifi-densepose-nn |
candle-backend |
Candle (pure Rust) backend |
wifi-densepose-nn |
cuda |
CUDA GPU acceleration |
wifi-densepose-train |
tch-backend |
Enable GPU training modules |
wifi-densepose-mat |
ruvector (default) |
RuVector graph algorithms |
wifi-densepose-mat |
api (default) |
REST + WebSocket API |
wifi-densepose-mat |
distributed |
Multi-node coordination |
wifi-densepose-mat |
drone |
Drone-mounted scanning |
wifi-densepose-hardware |
esp32 |
ESP32 protocol support |
wifi-densepose-hardware |
intel5300 |
Intel 5300 CSI Tool |
wifi-densepose-hardware |
linux-wifi |
Linux commodity WiFi |
wifi-densepose-wifiscan |
wlanapi |
Windows WLAN API async scanning |
wifi-densepose-core |
serde |
Serialization support |
wifi-densepose-core |
async |
Async trait support |
Testing
# Unit tests (all crates)
cargo test --workspace --no-default-features
# Signal processing benchmarks
cargo bench -p wifi-densepose-signal
# Training benchmarks
cargo bench -p wifi-densepose-train --no-default-features
# Detection benchmarks
cargo bench -p wifi-densepose-mat
Supported Hardware
| Hardware | Crate Feature | CSI Subcarriers | Cost |
|---|---|---|---|
| ESP32-S3 Mesh (3-6 nodes) | hardware/esp32 |
52-56 | ~$54 |
| Intel 5300 NIC | hardware/intel5300 |
30 | ~$50 |
| Atheros AR9580 | hardware/linux-wifi |
56 | ~$100 |
| Any WiFi (Windows/Linux) | wifiscan |
RSSI-only | $0 |
Architecture Decision Records
Key design decisions documented in docs/adr/:
| ADR | Title | Status |
|---|---|---|
| ADR-014 | SOTA Signal Processing | Accepted |
| ADR-015 | MM-Fi + Wi-Pose Training Datasets | Accepted |
| ADR-016 | RuVector Training Pipeline | Accepted (Complete) |
| ADR-017 | RuVector Signal + MAT Integration | Accepted |
| ADR-021 | Vital Sign Detection Pipeline | Accepted |
| ADR-022 | Windows WiFi Enhanced Sensing | Accepted |
| ADR-024 | Contrastive CSI Embedding Model | Accepted |
Related Projects
- WiFi-DensePose -- Main repository (Python v1 + Rust v2)
- RuVector -- Graph algorithms for neural networks (5 crates, v2.0.4)
- rUv -- Creator and maintainer
License
All crates are dual-licensed under MIT OR Apache-2.0.
Copyright (c) 2024 rUv