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Add bounded RTL8721Dx RAC1 CSI ingest to current RuView main
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# ADR-323: RTL8721Dx (Realtek AmebaDplus) CSI Wire Protocol
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- **Status**: accepted
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- **Date**: 2026-09-15
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- **Deciders**: RuView maintainers
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- **Tags**: realtek, ameba, amebadplus, rtl8721dx, csi, protocol, rust, udp
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## Context
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Unlike the MediaTek/Qualcomm CSI paths (ADR-266..269), which are simulator-first
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because no supported public vendor interface exports complex CSI, Realtek's
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official Ameba RTOS SDK (`Ameba-AIoT/ameba-rtos`, Apache-2.0) documents and
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exposes a real, callback-driven CSI API for the RTL8721Dx ("AmebaDplus")
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family: `wifi_csi_config()` plus the `RTW_EVENT_CSI_DONE` event delivering a
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`struct rtw_event_csi_report_info` (per-tone signed I/Q, 8-bit or 16-bit
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precision, selectable tone decimation, passive or active/triggered capture).
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This has been confirmed directly against SDK source
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(`component/wifi/api/wifi_api_event.h`) and against the official
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`example/wifi/wifi_csi` example, and validated on real PKM8721DAF-C13-F10
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hardware (build+flash+boot confirmed on branch `feat/rtl8721dx-csi-bringup`).
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The RTL8721Dx is a 1x1 WiFi 4 part — single TX/RX chain, not MIMO — so the
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MediaTek/Qualcomm wire format (Tx/Rx dimensioned matrices, chipset chain
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counts) does not fit. The vendor SDK's raw struct is also not a safe host
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wire format as-is: it has no CRC, a C flexible-array-member payload, and
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fields sized for firmware convenience (e.g. a wrapping `u32` microsecond
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timestamp) rather than network robustness.
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Per the existing repo convention (ESP32/ADR-018, MediaTek/ADR-266-267,
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Qualcomm/ADR-268-269, RTL8720F radar/ADR-263-264), each vendor CSI/radar
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source gets its own self-delimiting envelope and its own Rust module pair
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(`wifi-densepose-hardware` for framing+codec+simulator,
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`wifi-densepose-sensing-server` for the bounded JSON-safe snapshot), never a
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shared "generic vendor CSI" struct that would either lose vendor-specific
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fields or invite magic-space collisions. `SourceKind::Realtek` (value 2) is
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already assigned to the RTL8720F FMCW radar path (ADR-263/264) and must not
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be reused for CSI.
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## Decision
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Define `RAC1` ("Realtek Ameba CSI", version 1) as a little-endian,
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self-delimiting envelope, magic `0x3143_4152` (distinct from `MTC1`
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`0x3143544d`, `QCS1` 0x31535143, `RTR1` 0x31525452, and all ADR-018
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`0xC511000x` siblings):
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Fixed 49-byte header (explicit field-by-field serialization, no `#[repr(C)]`
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padding, matching the MediaTek/Qualcomm modules' style):
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| Field | Type | Notes |
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|---|---|---|
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| magic | u32 LE | `0x3143_4152` |
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| version | u8 | 1 |
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| header_len | u16 LE | 49 |
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| frame_len | u32 LE | header + payload + 4-byte CRC |
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| node_id | u8 | disambiguates multi-board illuminator/receiver deployments; 0 = unset |
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| csi_mode | u8 | 0=passive, 1=active, 2=board-to-board (`CsiMode`) |
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| sequence | u32 LE | from firmware `csi_sequence` |
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| timestamp_us | u32 LE | from firmware `hw_assigned_timestamp` (hardware-clock microseconds, wraps ~71 min — consumers must not assume monotonic across a capture longer than that) |
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| peer_mac | [u8; 6] | firmware `mac_addr` |
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| trig_mac | [u8; 6] | firmware `trig_addr` |
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| channel | u8 | operating channel |
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| bandwidth | u8 | 0=20MHz, 1=40MHz |
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| rx_rate | u8 | firmware `rx_rate` |
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| protocol_mode | u8 | 0=OFDM,1=HT,2=VHT,3=HE (`ProtocolMode`) |
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| num_sub_carrier | u16 LE | tone count in payload |
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| num_bit_per_tone | u8 | 16 (8-bit I + 8-bit Q) or 32 (16-bit I + 16-bit Q) |
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| decimation | u8 | tone group (1/2/4/8 — every Nth tone) |
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| rssi_dbm | i8 | single RF chain (1x1 hardware) |
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| rxsc | u8 | sub-20 MHz channel used |
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| csi_valid | u8 | 0/1 from firmware |
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| flags | u8 | bit 0 = SYNTHETIC (simulator provenance, never clearable downstream) |
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| payload_len | u32 LE | bytes, == `num_sub_carrier * (num_bit_per_tone / 8)` |
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Payload: `num_sub_carrier` consecutive (I, Q) tone pairs, each
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`num_bit_per_tone / 16` bytes per component (1 byte/component when
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`num_bit_per_tone == 16`, 2 bytes/component little-endian signed when `== 32`)
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— i.e. exactly the byte layout the firmware already produces in
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`csi_data[]`, just framed. CRC-32/IEEE over header+payload, final 4
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little-endian bytes. One envelope per UDP datagram.
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Parsers reject: unknown version, wrong `header_len`, `frame_len` exceeding
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the IPv4 UDP payload cap (65,507 bytes), `num_bit_per_tone` outside
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`{16, 32}`, `payload_len` inconsistent with `num_sub_carrier *
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(num_bit_per_tone/8)`, trailing bytes, and bad CRC — mirroring the
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MediaTek/Qualcomm parser contract exactly.
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Host side: add `realtek_csi.rs` to both
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`wifi-densepose-hardware` (frame + codec + simulator, mirroring
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`mediatek_csi.rs`/`qualcomm_csi.rs`) and `wifi-densepose-sensing-server`
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(bounded `RealtekCsiSnapshot`, mirroring `QualcommCsiSnapshot`), wired into
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the same UDP listener loop and `/api/v1/csi/realtek/latest` route as the
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existing vendor sources. The initial Mac compatibility port keeps Realtek CSI
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as a separate bounded diagnostic stream. Fresh ESP32 frames remain the primary
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sensing source. This change does not add `SourceKind::RealtekCsi` to a signed
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ingest contract; that requires a separate reviewed identity-bound hardware
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proof. RAC1 CRC checks corruption, not origin.
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Firmware side (`example/wifi/wifi_csi` derivative, built against the
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official Ameba RTOS SDK, tracked outside this repository per the existing
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`CLAUDE.local.md` convention — the vendor SDK itself is never vendored into
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this repo): join the board to the deployment's WiFi AP in STA mode
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(passive CSI against the real AP as peer, since only one physical board is
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available in this bring-up), read the AP's BSSID at runtime after
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association (never hardcode a MAC into firmware source), pack each
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`RTW_EVENT_CSI_DONE` report into one `RAC1` datagram, and `sendto()` it over
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UDP to the host sensing-server's existing CSI port.
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## Consequences
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### Positive
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- CSI is real, MEASURED hardware output from day one — no simulator-first
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bridge phase is needed the way MediaTek/Qualcomm required, because the
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vendor SDK genuinely exposes the capability and we have the board in hand.
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- One board is sufficient for a first useful signal (passive CSI against the
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home AP); active and board-to-board modes are additive later without a
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wire-format break (`csi_mode` already reserves the values).
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- Reuses the bounded UDP parser and status-route pattern without changing
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existing ESP32 sensing. Unsigned RAC1 diagnostics are not authorized as
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calibrated presence, person count, pose, or vital evidence.
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### Negative
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- 1x1 hardware means no spatial (multi-antenna) diversity from a single
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board; multi-board deployment is required for the differential/localization
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use cases described in the original RTL8721Dx capability analysis.
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- The 71-minute microsecond timestamp wraparound (inherited from the
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firmware's `u32` field) means long unattended captures need host-side
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sequence-based reordering, not raw timestamp arithmetic, across a wrap.
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### Neutral
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- The RAC1 envelope intentionally does not carry the SDK's raw
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`csi_signature` (0xABCD) marker — our own `magic`/CRC supersede it as the
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framing integrity check.
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## Hardware gates
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- [x] Confirm SDK source exposes `RTW_EVENT_CSI_DONE` / `rtw_event_csi_report_info` (done — `component/wifi/api/wifi_api_event.h`).
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- [x] Build and flash a baseline image on real PKM8721DAF-C13-F10 hardware, confirm boot over serial (done — `feat/rtl8721dx-csi-bringup`).
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- [x] Flash the CSI-streaming firmware and confirm `RAC1` datagrams parse on the host from the real board (done, 2026-09-15 — see below).
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- [x] Record MEASURED throughput/latency/jitter from the real running firmware (done, 2026-09-15 — see below).
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- [ ] A human walk-test across the link (amplitude perturbation vs. static baseline) is deferred — requires the operator physically present; not claimed until performed.
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### MEASURED: real RAC1 capture and sustained throughput (2026-09-15)
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Passive CSI (`RTW_CSI_MODE_NORMAL`, `RTW_CSI_TRIG_BEACON | RTW_CSI_TRIG_DATA | RTW_CSI_TRIG_QOS_DATA`)
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against the deployment AP. A single `RAC1` datagram was first
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cross-checked field-by-field against the firmware's own serial log of the
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same report — every byte matched: magic `0x31434152`, RSSI byte exact match,
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channel/bandwidth/protocol/subcarrier-count exact match, 157-byte total frame
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(49-byte header + 104-byte payload + 4-byte CRC, exactly as specified above).
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`RTW_CSI_MODE_RX_RESP` (estimate CSI from ACKs to the STA's own transmissions)
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never fired `RTW_EVENT_CSI_DONE` across two full test runs with confirmed
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real traffic (not a hang) — this mode does not work for this hardware/AP
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combination and `RTW_CSI_MODE_NORMAL` with beacon+data triggers is the
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working configuration.
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**An earlier note here claimed `NORMAL` mode fires only once per CSI enable
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— that was wrong**, caused by a debug log line gated to print only every
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50th frame (`frame_count % 50 == 1`), which was misread as "only one report
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total." A follow-up capture with a UDP listener running concurrently with a
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board reset measured **277 real RAC1 datagrams in 40 seconds (43,489 bytes)**,
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with `csi_sequence` climbing continuously and monotonically in the firmware's
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own serial log across six separate 50-frame log checkpoints in one 45s
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session — CSI reporting is continuous, roughly 7-12 fps, not sparse.
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### MEASURED: throughput optimization pass (2026-09-15)
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Formalized as a repeatable tool: `scripts/benchmark-rtl8721dx-csi.py` (listens
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on the sensing-server's CSI UDP port, reports fps/throughput/RSSI/inter-frame
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interval/sequence-gap stats from real received `RAC1` datagrams).
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**Baseline** (`trig_period=200` [64ms], `trig_frame_ctrl=0`,
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`CSI_REPORT_BUF_NUM=1`), 30s capture:
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| Metric | Value |
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|---|---|
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| RAC1 fps | 14.67 |
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| Throughput | 2,302.7 bytes/s |
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| Mean inter-frame interval | 68.3 ms |
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| RSSI | mean -34.4 dBm |
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`trig_period` (units of 320µs) was hypothesized as the rate-limiting
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throttle — the observed 68.3ms mean interval tracks the 64ms configured
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period almost exactly. Confirmed by tuning:
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1. `trig_period`: 200 → 15 (the SDK doc's stated minimum recommended value,
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~4.8ms)
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2. `trig_frame_ctrl`: 0 → `RTW_CSI_TRIG_ACK` (second trigger source: every
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link-layer ACK the AP sends for the heartbeat's own outgoing traffic, on
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top of the existing beacon trigger)
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3. `CSI_REPORT_BUF_NUM`: 1 → 4 (a "lack of csi buf!" drop was observed even
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at the slower baseline rate; more headroom needed at a higher rate)
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**Tuned**, 30s capture:
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| Metric | Value | vs. baseline |
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|---|---|---|
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| RAC1 fps | 66.40 | **4.5x** |
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| Throughput | 10,424.8 bytes/s | **4.5x** |
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| Mean inter-frame interval | 14.9 ms | 4.6x lower |
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| Sequence gaps | 78 / ~2036 (~3.8%) | new (0 observed at the slower baseline rate) |
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| RSSI | mean -31.1 dBm | (different session/position, not a controlled variable here) |
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The `trig_period` hypothesis is confirmed as the primary lever. The ~3.8%
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frame-loss rate at 66 fps is a reasonable place to stop for now — it is
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UDP-over-WiFi loss, not a firmware defect, and is small enough not to block
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downstream sensing use; revisit only if a use case needs stronger delivery
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guarantees (sequence-gap-triggered re-request, TCP fallback, etc.).
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## Links
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- [ADR-266](ADR-266-mediatek-filogic-csi-platform.md) / [ADR-267](ADR-267-mediatek-mimo-csi-wire-protocol.md) — sibling vendor CSI ADR pair (simulator-first precedent)
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- [ADR-268](ADR-268-qualcomm-atheros-csi-platform.md) / [ADR-269](ADR-269-qualcomm-csi-wire-protocol.md) — sibling vendor CSI ADR pair
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- [ADR-263](ADR-263-rtl8720f-2-4ghz-fmcw-radar-platform.md) / [ADR-264](ADR-264-rtl8720f-radar-wire-protocol.md) — existing Realtek (RTL8720F radar) path; `SourceKind::Realtek` owner
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- `CLAUDE.local.md` — RTL8721Dx toolchain setup, board/COM port, first bring-up log
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@@ -0,0 +1,201 @@
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#!/usr/bin/env python3
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"""
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RTL8721Dx (Realtek AmebaDplus) live CSI throughput/latency benchmark.
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Listens on the wifi-densepose-sensing-server's CSI UDP port for real RAC1
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frames (ADR-323, docs/adr/ADR-323-rtl8721dx-ameba-csi-wire-protocol.md) sent
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by the ruview_csi_node firmware (branch feat/rtl8721dx-csi-bringup) running
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on real RTL8721Dx hardware, and reports MEASURED — not simulated — throughput
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and frame-rate statistics.
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This does not itself trigger a board reset; run it while the firmware is
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already connected and streaming (see CLAUDE.local.md for the reset+capture
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pattern used to bring a fresh boot up during firmware iteration).
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Usage:
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python scripts/benchmark-rtl8721dx-csi.py --duration 40
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python scripts/benchmark-rtl8721dx-csi.py --duration 40 --port 5005 --output results.json
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"""
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from __future__ import annotations
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import argparse
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import json
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import socket
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import struct
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import sys
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import time
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from dataclasses import dataclass, asdict, field
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from pathlib import Path
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RAC1_MAGIC = bytes.fromhex("52414331") # "RAC1" little-endian, see ADR-323
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RHB1_MAGIC = bytes.fromhex("52484231") # heartbeat marker (not a CSI frame)
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RAC1_HEADER_LEN = 49
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@dataclass
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class Rac1Frame:
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recv_time: float
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length: int
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sequence: int
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timestamp_us: int
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channel: int
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bandwidth: int
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num_sub_carrier: int
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rssi_dbm: int
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csi_valid: int
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def parse_rac1_header(data: bytes, recv_time: float) -> Rac1Frame | None:
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if len(data) < RAC1_HEADER_LEN or data[:4] != RAC1_MAGIC:
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return None
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sequence = struct.unpack_from("<I", data, 13)[0]
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timestamp_us = struct.unpack_from("<I", data, 17)[0]
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channel = data[33]
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bandwidth = data[34]
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num_sub_carrier = struct.unpack_from("<H", data, 37)[0]
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rssi_dbm = struct.unpack_from("<b", data, 41)[0]
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csi_valid = data[43]
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return Rac1Frame(
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recv_time=recv_time,
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length=len(data),
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sequence=sequence,
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timestamp_us=timestamp_us,
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channel=channel,
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bandwidth=bandwidth,
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num_sub_carrier=num_sub_carrier,
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rssi_dbm=rssi_dbm,
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csi_valid=csi_valid,
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)
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@dataclass
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class BenchmarkResult:
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duration_s: float
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total_datagrams: int
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rac1_frames: int
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heartbeat_packets: int
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other_packets: int
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rac1_bytes: int
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rac1_fps: float
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rac1_bytes_per_sec: float
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sequence_gaps: int
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first_sequence: int | None
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last_sequence: int | None
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rssi_min_dbm: int | None
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rssi_max_dbm: int | None
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rssi_mean_dbm: float | None
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inter_frame_interval_ms_mean: float | None
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inter_frame_interval_ms_p95: float | None
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channels_seen: list[int] = field(default_factory=list)
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evidence: str = "MEASURED"
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|
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|
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def run_benchmark(port: int, duration: float, bind_ip: str = "0.0.0.0") -> BenchmarkResult:
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sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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sock.bind((bind_ip, port))
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sock.settimeout(0.5)
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frames: list[Rac1Frame] = []
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total = 0
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heartbeats = 0
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other = 0
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deadline = time.time() + duration
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print(f"Listening on {bind_ip}:{port} for {duration}s ...", file=sys.stderr)
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while time.time() < deadline:
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try:
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data, _addr = sock.recvfrom(4096)
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except socket.timeout:
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continue
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recv_time = time.time()
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total += 1
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if data[:4] == RHB1_MAGIC:
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heartbeats += 1
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continue
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frame = parse_rac1_header(data, recv_time)
|
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if frame is not None:
|
||||
frames.append(frame)
|
||||
else:
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||||
other += 1
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||||
sock.close()
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||||
|
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rac1_bytes = sum(f.length for f in frames)
|
||||
seqs = [f.sequence for f in frames]
|
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rssis = [f.rssi_dbm for f in frames]
|
||||
channels = sorted({f.channel for f in frames})
|
||||
|
||||
gaps = 0
|
||||
for a, b in zip(seqs, seqs[1:]):
|
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if b != a + 1:
|
||||
gaps += 1
|
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|
||||
intervals_ms = [
|
||||
(b.recv_time - a.recv_time) * 1000.0 for a, b in zip(frames, frames[1:])
|
||||
]
|
||||
intervals_ms.sort()
|
||||
|
||||
def percentile(values: list[float], p: float) -> float | None:
|
||||
if not values:
|
||||
return None
|
||||
idx = min(len(values) - 1, int(len(values) * p))
|
||||
return values[idx]
|
||||
|
||||
return BenchmarkResult(
|
||||
duration_s=duration,
|
||||
total_datagrams=total,
|
||||
rac1_frames=len(frames),
|
||||
heartbeat_packets=heartbeats,
|
||||
other_packets=other,
|
||||
rac1_bytes=rac1_bytes,
|
||||
rac1_fps=len(frames) / duration if duration > 0 else 0.0,
|
||||
rac1_bytes_per_sec=rac1_bytes / duration if duration > 0 else 0.0,
|
||||
sequence_gaps=gaps,
|
||||
first_sequence=seqs[0] if seqs else None,
|
||||
last_sequence=seqs[-1] if seqs else None,
|
||||
rssi_min_dbm=min(rssis) if rssis else None,
|
||||
rssi_max_dbm=max(rssis) if rssis else None,
|
||||
rssi_mean_dbm=(sum(rssis) / len(rssis)) if rssis else None,
|
||||
inter_frame_interval_ms_mean=(
|
||||
sum(intervals_ms) / len(intervals_ms) if intervals_ms else None
|
||||
),
|
||||
inter_frame_interval_ms_p95=percentile(intervals_ms, 0.95),
|
||||
channels_seen=channels,
|
||||
)
|
||||
|
||||
|
||||
def main() -> int:
|
||||
parser = argparse.ArgumentParser(description=__doc__, formatter_class=argparse.RawDescriptionHelpFormatter)
|
||||
parser.add_argument("--port", type=int, default=5005, help="UDP port to listen on (default: 5005, matches wifi-densepose-sensing-server)")
|
||||
parser.add_argument("--bind-ip", type=str, default="0.0.0.0")
|
||||
parser.add_argument("--duration", type=float, default=40.0, help="capture window in seconds")
|
||||
parser.add_argument("--output", type=Path, default=None, help="write results as JSON to this path")
|
||||
args = parser.parse_args()
|
||||
|
||||
result = run_benchmark(args.port, args.duration, args.bind_ip)
|
||||
|
||||
print(f"\n=== RTL8721Dx RAC1 CSI benchmark ({result.evidence}) ===")
|
||||
print(f"duration: {result.duration_s:.1f}s")
|
||||
print(f"total UDP datagrams: {result.total_datagrams}")
|
||||
print(f"RAC1 CSI frames: {result.rac1_frames}")
|
||||
print(f"heartbeat packets: {result.heartbeat_packets}")
|
||||
print(f"other/unrecognized: {result.other_packets}")
|
||||
print(f"RAC1 throughput: {result.rac1_fps:.2f} fps, {result.rac1_bytes_per_sec:.1f} bytes/s")
|
||||
print(f"sequence gaps: {result.sequence_gaps} (dropped/reordered frames)")
|
||||
if result.first_sequence is not None:
|
||||
print(f"sequence range: {result.first_sequence} .. {result.last_sequence}")
|
||||
if result.rssi_mean_dbm is not None:
|
||||
print(f"RSSI: min={result.rssi_min_dbm} max={result.rssi_max_dbm} mean={result.rssi_mean_dbm:.1f} dBm")
|
||||
if result.inter_frame_interval_ms_mean is not None:
|
||||
print(f"inter-frame interval: mean={result.inter_frame_interval_ms_mean:.1f}ms p95={result.inter_frame_interval_ms_p95:.1f}ms")
|
||||
print(f"channels seen: {result.channels_seen}")
|
||||
|
||||
if args.output:
|
||||
args.output.write_text(json.dumps(asdict(result), indent=2))
|
||||
print(f"\nwrote {args.output}", file=sys.stderr)
|
||||
|
||||
return 0
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
sys.exit(main())
|
||||
@@ -0,0 +1,69 @@
|
||||
//! Benchmarks for ADR-323 Realtek RTL8721Dx (AmebaDplus) CSI encode/decode
|
||||
//! throughput, at the real hardware's own reported dimensions (52
|
||||
//! subcarriers, 16-bit tone precision — see `example/wifi/wifi_csi/README.md`
|
||||
//! in the vendor SDK).
|
||||
|
||||
use criterion::{black_box, criterion_group, criterion_main, Criterion};
|
||||
use wifi_densepose_hardware::realtek_csi::simulator::{RealtekCsiSimulator, SimulatorConfig};
|
||||
use wifi_densepose_hardware::realtek_csi::CsiFrame;
|
||||
|
||||
fn bench_to_bytes_8bit(c: &mut Criterion) {
|
||||
let mut sim = RealtekCsiSimulator::new(SimulatorConfig::default()).unwrap();
|
||||
let frame = sim.next_frame();
|
||||
c.bench_function("realtek_csi_to_bytes_52sc_8bit", |b| {
|
||||
b.iter(|| black_box(frame.to_bytes().unwrap()));
|
||||
});
|
||||
}
|
||||
|
||||
fn bench_from_bytes_8bit(c: &mut Criterion) {
|
||||
let mut sim = RealtekCsiSimulator::new(SimulatorConfig::default()).unwrap();
|
||||
let wire = sim.next_frame().to_bytes().unwrap();
|
||||
c.bench_function("realtek_csi_from_bytes_52sc_8bit", |b| {
|
||||
b.iter(|| black_box(CsiFrame::from_bytes(black_box(&wire)).unwrap()));
|
||||
});
|
||||
}
|
||||
|
||||
fn bench_to_bytes_16bit(c: &mut Criterion) {
|
||||
let cfg = SimulatorConfig {
|
||||
num_bit_per_tone: 32,
|
||||
..Default::default()
|
||||
};
|
||||
let mut sim = RealtekCsiSimulator::new(cfg).unwrap();
|
||||
let frame = sim.next_frame();
|
||||
c.bench_function("realtek_csi_to_bytes_52sc_16bit", |b| {
|
||||
b.iter(|| black_box(frame.to_bytes().unwrap()));
|
||||
});
|
||||
}
|
||||
|
||||
fn bench_from_bytes_16bit(c: &mut Criterion) {
|
||||
let cfg = SimulatorConfig {
|
||||
num_bit_per_tone: 32,
|
||||
..Default::default()
|
||||
};
|
||||
let mut sim = RealtekCsiSimulator::new(cfg).unwrap();
|
||||
let wire = sim.next_frame().to_bytes().unwrap();
|
||||
c.bench_function("realtek_csi_from_bytes_52sc_16bit", |b| {
|
||||
b.iter(|| black_box(CsiFrame::from_bytes(black_box(&wire)).unwrap()));
|
||||
});
|
||||
}
|
||||
|
||||
fn bench_round_trip_full_datagram(c: &mut Criterion) {
|
||||
let mut sim = RealtekCsiSimulator::new(SimulatorConfig::default()).unwrap();
|
||||
c.bench_function("realtek_csi_round_trip_52sc_8bit", |b| {
|
||||
b.iter(|| {
|
||||
let frame = sim.next_frame();
|
||||
let wire = black_box(frame.to_bytes().unwrap());
|
||||
black_box(CsiFrame::from_bytes(&wire).unwrap());
|
||||
});
|
||||
});
|
||||
}
|
||||
|
||||
criterion_group!(
|
||||
benches,
|
||||
bench_to_bytes_8bit,
|
||||
bench_from_bytes_8bit,
|
||||
bench_to_bytes_16bit,
|
||||
bench_from_bytes_16bit,
|
||||
bench_round_trip_full_datagram,
|
||||
);
|
||||
criterion_main!(benches);
|
||||
@@ -0,0 +1,107 @@
|
||||
//! Deterministic Realtek RTL8721Dx (AmebaDplus) 1x1 CSI simulator (ADR-323).
|
||||
|
||||
use clap::Parser;
|
||||
use std::{
|
||||
fs::File,
|
||||
io::{self, Write},
|
||||
net::{SocketAddr, UdpSocket},
|
||||
path::PathBuf,
|
||||
thread,
|
||||
time::Duration,
|
||||
};
|
||||
use wifi_densepose_hardware::realtek_csi::{
|
||||
simulator::{RealtekCsiSimulator, SimulatorConfig},
|
||||
CsiFrame, CsiMode,
|
||||
};
|
||||
|
||||
#[derive(Debug, Parser)]
|
||||
#[command(
|
||||
name = "realtek-csi-sim",
|
||||
about = "Emit synthetic ADR-323 Realtek RTL8721Dx CSI frames"
|
||||
)]
|
||||
struct Args {
|
||||
#[arg(long, default_value_t = 100)]
|
||||
frames: u32,
|
||||
#[arg(long, default_value = "0x5241433152544c31", value_parser=parse_u64)]
|
||||
seed: u64,
|
||||
#[arg(long, default_value_t = 6)]
|
||||
channel: u8,
|
||||
#[arg(long)]
|
||||
bandwidth_40mhz: bool,
|
||||
#[arg(long, default_value_t = 52)]
|
||||
subcarriers: u16,
|
||||
#[arg(long, default_value_t = 16)]
|
||||
tone_bits: u8,
|
||||
#[arg(long, default_value_t = 1)]
|
||||
decimation: u8,
|
||||
#[arg(long, default_value_t = 64)]
|
||||
interval_ms: u64,
|
||||
#[arg(long)]
|
||||
udp: Option<SocketAddr>,
|
||||
/// Replay: little-endian u32 length followed by one ADR-323 envelope.
|
||||
#[arg(long)]
|
||||
output: Option<PathBuf>,
|
||||
#[arg(long)]
|
||||
realtime: bool,
|
||||
}
|
||||
|
||||
fn parse_u64(v: &str) -> Result<u64, String> {
|
||||
if let Some(h) = v.strip_prefix("0x").or_else(|| v.strip_prefix("0X")) {
|
||||
u64::from_str_radix(h, 16).map_err(|e| e.to_string())
|
||||
} else {
|
||||
v.parse()
|
||||
.map_err(|e: std::num::ParseIntError| e.to_string())
|
||||
}
|
||||
}
|
||||
|
||||
fn emit(
|
||||
frame: CsiFrame,
|
||||
socket: Option<&UdpSocket>,
|
||||
destination: Option<SocketAddr>,
|
||||
output: &mut Option<File>,
|
||||
) -> Result<usize, Box<dyn std::error::Error>> {
|
||||
let wire = frame.to_bytes()?;
|
||||
if let (Some(s), Some(d)) = (socket, destination) {
|
||||
if s.send_to(&wire, d)? != wire.len() {
|
||||
return Err(io::Error::new(io::ErrorKind::WriteZero, "partial UDP datagram").into());
|
||||
}
|
||||
}
|
||||
if let Some(f) = output {
|
||||
f.write_all(&(wire.len() as u32).to_le_bytes())?;
|
||||
f.write_all(&wire)?;
|
||||
}
|
||||
Ok(wire.len())
|
||||
}
|
||||
|
||||
fn main() -> Result<(), Box<dyn std::error::Error>> {
|
||||
let a = Args::parse();
|
||||
if a.udp.is_none() && a.output.is_none() {
|
||||
return Err("select at least one sink with --udp or --output".into());
|
||||
}
|
||||
let cfg = SimulatorConfig {
|
||||
seed: a.seed,
|
||||
csi_mode: CsiMode::Passive,
|
||||
channel: a.channel,
|
||||
bandwidth: if a.bandwidth_40mhz { 1 } else { 0 },
|
||||
num_sub_carrier: a.subcarriers,
|
||||
num_bit_per_tone: a.tone_bits,
|
||||
decimation: a.decimation,
|
||||
frame_period_us: (a.interval_ms * 1000) as u32,
|
||||
..Default::default()
|
||||
};
|
||||
let mut sim = RealtekCsiSimulator::new(cfg)?;
|
||||
let socket = a.udp.map(|_| UdpSocket::bind("0.0.0.0:0")).transpose()?;
|
||||
let mut output = a.output.as_ref().map(File::create).transpose()?;
|
||||
let mut bytes = 0usize;
|
||||
for _ in 0..a.frames {
|
||||
bytes += emit(sim.next_frame(), socket.as_ref(), a.udp, &mut output)?;
|
||||
if a.realtime {
|
||||
thread::sleep(Duration::from_millis(a.interval_ms));
|
||||
}
|
||||
}
|
||||
eprintln!(
|
||||
"emitted {} synthetic Realtek RTL8721Dx CSI frames ({} bytes, channel={}, subcarriers={}, tone_bits={}, seed={:#x})",
|
||||
a.frames, bytes, a.channel, a.subcarriers, a.tone_bits, a.seed
|
||||
);
|
||||
Ok(())
|
||||
}
|
||||
@@ -62,6 +62,9 @@ pub mod qualcomm_csi;
|
||||
/// ADR-264 host-side framing for Realtek RTL8720F CFR and FMCW radar reports.
|
||||
/// This module has no dependency on the vendor SDK.
|
||||
pub mod rtl8720f;
|
||||
/// ADR-323 vendor-neutral Realtek RTL8721Dx (AmebaDplus) 1x1 CSI framing and
|
||||
/// simulator. This module has no dependency on the vendor SDK.
|
||||
pub mod realtek_csi;
|
||||
|
||||
pub use bridge::CsiData;
|
||||
pub use csi_frame::{
|
||||
|
||||
@@ -0,0 +1,563 @@
|
||||
//! Vendor-neutral Realtek RTL8721Dx (AmebaDplus) 1x1 CSI transport and
|
||||
//! deterministic simulator. This is not the vendor SDK's raw
|
||||
//! `rtw_event_csi_report_info` ABI (no CRC, C flexible-array payload); see
|
||||
//! ADR-323 for the field-by-field mapping and rationale.
|
||||
|
||||
use serde::{Deserialize, Serialize};
|
||||
use thiserror::Error;
|
||||
|
||||
pub const RAC1_MAGIC: u32 = 0x3143_4152; // "RAC1" little endian
|
||||
pub const RAC1_VERSION: u8 = 1;
|
||||
pub const RAC1_HEADER_LEN: usize = 49;
|
||||
pub const RAC1_CRC_LEN: usize = 4;
|
||||
pub const RAC1_MAX_FRAME_LEN: usize = 65_507;
|
||||
/// Upper bound on subcarriers a 1x1 20/40 MHz OFDM/HT/VHT/HE capture can
|
||||
/// plausibly report; guards `to_bytes`/`from_bytes` against runaway sizes.
|
||||
pub const RAC1_MAX_SUBCARRIERS: usize = 4_096;
|
||||
|
||||
#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
|
||||
#[repr(u8)]
|
||||
pub enum CsiMode {
|
||||
Passive = 0,
|
||||
Active = 1,
|
||||
BoardToBoard = 2,
|
||||
}
|
||||
|
||||
impl TryFrom<u8> for CsiMode {
|
||||
type Error = CsiParseError;
|
||||
fn try_from(value: u8) -> Result<Self, Self::Error> {
|
||||
match value {
|
||||
0 => Ok(Self::Passive),
|
||||
1 => Ok(Self::Active),
|
||||
2 => Ok(Self::BoardToBoard),
|
||||
_ => Err(CsiParseError::UnknownCsiMode(value)),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
|
||||
#[repr(u8)]
|
||||
pub enum ProtocolMode {
|
||||
Ofdm = 0,
|
||||
Ht = 1,
|
||||
Vht = 2,
|
||||
He = 3,
|
||||
}
|
||||
|
||||
impl TryFrom<u8> for ProtocolMode {
|
||||
type Error = CsiParseError;
|
||||
fn try_from(value: u8) -> Result<Self, Self::Error> {
|
||||
match value {
|
||||
0 => Ok(Self::Ofdm),
|
||||
1 => Ok(Self::Ht),
|
||||
2 => Ok(Self::Vht),
|
||||
3 => Ok(Self::He),
|
||||
_ => Err(CsiParseError::UnknownProtocolMode(value)),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Debug, Clone, Copy, Default, PartialEq, Eq, Serialize, Deserialize)]
|
||||
pub struct CsiFlags(pub u8);
|
||||
|
||||
impl CsiFlags {
|
||||
pub const SYNTHETIC: u8 = 1 << 0;
|
||||
pub fn contains(self, flag: u8) -> bool {
|
||||
self.0 & flag != 0
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
|
||||
pub struct CsiFrame {
|
||||
/// Disambiguates multi-board illuminator/receiver deployments; 0 = unset.
|
||||
pub node_id: u8,
|
||||
pub csi_mode: CsiMode,
|
||||
pub sequence: u32,
|
||||
/// Hardware-clock microseconds; wraps roughly every 71 minutes. Consumers
|
||||
/// must reorder by `sequence`, not raw timestamp arithmetic, across a wrap.
|
||||
pub timestamp_us: u32,
|
||||
pub peer_mac: [u8; 6],
|
||||
pub trig_mac: [u8; 6],
|
||||
pub channel: u8,
|
||||
/// 0 = 20 MHz, 1 = 40 MHz.
|
||||
pub bandwidth: u8,
|
||||
pub rx_rate: u8,
|
||||
pub protocol_mode: ProtocolMode,
|
||||
pub num_sub_carrier: u16,
|
||||
/// 16 (8-bit I + 8-bit Q) or 32 (16-bit I + 16-bit Q).
|
||||
pub num_bit_per_tone: u8,
|
||||
/// Tone group: 1/2/4/8 (every Nth tone reported).
|
||||
pub decimation: u8,
|
||||
/// Single RF chain (1x1 hardware).
|
||||
pub rssi_dbm: i8,
|
||||
pub rxsc: u8,
|
||||
pub csi_valid: bool,
|
||||
pub flags: CsiFlags,
|
||||
/// One (I, Q) pair per reported subcarrier, widened to i16 regardless of
|
||||
/// wire precision (an 8-bit wire value fits losslessly).
|
||||
pub payload: Vec<(i16, i16)>,
|
||||
}
|
||||
|
||||
impl CsiFrame {
|
||||
fn component_bytes(&self) -> Result<usize, CsiParseError> {
|
||||
match self.num_bit_per_tone {
|
||||
16 => Ok(1),
|
||||
32 => Ok(2),
|
||||
other => Err(CsiParseError::InvalidToneBits(other)),
|
||||
}
|
||||
}
|
||||
|
||||
pub fn to_bytes(&self) -> Result<Vec<u8>, CsiParseError> {
|
||||
self.validate()?;
|
||||
let comp_bytes = self.component_bytes()?;
|
||||
let payload_len = self
|
||||
.payload
|
||||
.len()
|
||||
.checked_mul(comp_bytes * 2)
|
||||
.ok_or(CsiParseError::LengthOverflow)?;
|
||||
let frame_len = RAC1_HEADER_LEN
|
||||
.checked_add(payload_len)
|
||||
.and_then(|n| n.checked_add(RAC1_CRC_LEN))
|
||||
.ok_or(CsiParseError::LengthOverflow)?;
|
||||
if frame_len > RAC1_MAX_FRAME_LEN {
|
||||
return Err(CsiParseError::FrameTooLarge(frame_len));
|
||||
}
|
||||
let mut out = Vec::with_capacity(frame_len);
|
||||
out.extend_from_slice(&RAC1_MAGIC.to_le_bytes());
|
||||
out.push(RAC1_VERSION);
|
||||
out.extend_from_slice(&(RAC1_HEADER_LEN as u16).to_le_bytes());
|
||||
out.extend_from_slice(&(frame_len as u32).to_le_bytes());
|
||||
out.push(self.node_id);
|
||||
out.push(self.csi_mode as u8);
|
||||
out.extend_from_slice(&self.sequence.to_le_bytes());
|
||||
out.extend_from_slice(&self.timestamp_us.to_le_bytes());
|
||||
out.extend_from_slice(&self.peer_mac);
|
||||
out.extend_from_slice(&self.trig_mac);
|
||||
out.push(self.channel);
|
||||
out.push(self.bandwidth);
|
||||
out.push(self.rx_rate);
|
||||
out.push(self.protocol_mode as u8);
|
||||
out.extend_from_slice(&self.num_sub_carrier.to_le_bytes());
|
||||
out.push(self.num_bit_per_tone);
|
||||
out.push(self.decimation);
|
||||
out.push(self.rssi_dbm as u8);
|
||||
out.push(self.rxsc);
|
||||
out.push(self.csi_valid as u8);
|
||||
out.push(self.flags.0);
|
||||
out.extend_from_slice(&(payload_len as u32).to_le_bytes());
|
||||
debug_assert_eq!(out.len(), RAC1_HEADER_LEN);
|
||||
for (i, q) in &self.payload {
|
||||
if comp_bytes == 1 {
|
||||
out.push(*i as i8 as u8);
|
||||
out.push(*q as i8 as u8);
|
||||
} else {
|
||||
out.extend_from_slice(&i.to_le_bytes());
|
||||
out.extend_from_slice(&q.to_le_bytes());
|
||||
}
|
||||
}
|
||||
out.extend_from_slice(&crc32_ieee(&out).to_le_bytes());
|
||||
Ok(out)
|
||||
}
|
||||
|
||||
pub fn from_bytes(input: &[u8]) -> Result<(Self, usize), CsiParseError> {
|
||||
if input.len() < RAC1_HEADER_LEN {
|
||||
return Err(CsiParseError::InsufficientData {
|
||||
needed: RAC1_HEADER_LEN,
|
||||
got: input.len(),
|
||||
});
|
||||
}
|
||||
let magic = u32_at(input, 0);
|
||||
if magic != RAC1_MAGIC {
|
||||
return Err(CsiParseError::InvalidMagic(magic));
|
||||
}
|
||||
if input[4] != RAC1_VERSION {
|
||||
return Err(CsiParseError::UnsupportedVersion(input[4]));
|
||||
}
|
||||
let header_len = u16_at(input, 5) as usize;
|
||||
if header_len != RAC1_HEADER_LEN {
|
||||
return Err(CsiParseError::InvalidHeaderLength(header_len));
|
||||
}
|
||||
let frame_len = u32_at(input, 7) as usize;
|
||||
if frame_len > RAC1_MAX_FRAME_LEN {
|
||||
return Err(CsiParseError::FrameTooLarge(frame_len));
|
||||
}
|
||||
if frame_len < header_len + RAC1_CRC_LEN {
|
||||
return Err(CsiParseError::InvalidFrameLength(frame_len));
|
||||
}
|
||||
if input.len() < frame_len {
|
||||
return Err(CsiParseError::InsufficientData {
|
||||
needed: frame_len,
|
||||
got: input.len(),
|
||||
});
|
||||
}
|
||||
let expected_crc = u32_at(input, frame_len - 4);
|
||||
let actual_crc = crc32_ieee(&input[..frame_len - 4]);
|
||||
if expected_crc != actual_crc {
|
||||
return Err(CsiParseError::CrcMismatch {
|
||||
expected: expected_crc,
|
||||
actual: actual_crc,
|
||||
});
|
||||
}
|
||||
|
||||
let node_id = input[11];
|
||||
let csi_mode = CsiMode::try_from(input[12])?;
|
||||
let sequence = u32_at(input, 13);
|
||||
let timestamp_us = u32_at(input, 17);
|
||||
let mut peer_mac = [0u8; 6];
|
||||
peer_mac.copy_from_slice(&input[21..27]);
|
||||
let mut trig_mac = [0u8; 6];
|
||||
trig_mac.copy_from_slice(&input[27..33]);
|
||||
let channel = input[33];
|
||||
let bandwidth = input[34];
|
||||
let rx_rate = input[35];
|
||||
let protocol_mode = ProtocolMode::try_from(input[36])?;
|
||||
let num_sub_carrier = u16_at(input, 37);
|
||||
let num_bit_per_tone = input[39];
|
||||
let decimation = input[40];
|
||||
let rssi_dbm = input[41] as i8;
|
||||
let rxsc = input[42];
|
||||
let csi_valid = input[43] != 0;
|
||||
let flags = CsiFlags(input[44]);
|
||||
let payload_len = u32_at(input, 45) as usize;
|
||||
|
||||
if header_len + payload_len + RAC1_CRC_LEN != frame_len {
|
||||
return Err(CsiParseError::PayloadLengthMismatch);
|
||||
}
|
||||
let comp_bytes = match num_bit_per_tone {
|
||||
16 => 1usize,
|
||||
32 => 2usize,
|
||||
other => return Err(CsiParseError::InvalidToneBits(other)),
|
||||
};
|
||||
let expected_payload_len = (num_sub_carrier as usize)
|
||||
.checked_mul(comp_bytes * 2)
|
||||
.ok_or(CsiParseError::LengthOverflow)?;
|
||||
if payload_len != expected_payload_len {
|
||||
return Err(CsiParseError::PayloadLengthMismatch);
|
||||
}
|
||||
let payload_bytes = &input[header_len..header_len + payload_len];
|
||||
let payload = if comp_bytes == 1 {
|
||||
payload_bytes
|
||||
.chunks_exact(2)
|
||||
.map(|b| (b[0] as i8 as i16, b[1] as i8 as i16))
|
||||
.collect()
|
||||
} else {
|
||||
payload_bytes
|
||||
.chunks_exact(4)
|
||||
.map(|b| {
|
||||
(
|
||||
i16::from_le_bytes([b[0], b[1]]),
|
||||
i16::from_le_bytes([b[2], b[3]]),
|
||||
)
|
||||
})
|
||||
.collect()
|
||||
};
|
||||
|
||||
let frame = Self {
|
||||
node_id,
|
||||
csi_mode,
|
||||
sequence,
|
||||
timestamp_us,
|
||||
peer_mac,
|
||||
trig_mac,
|
||||
channel,
|
||||
bandwidth,
|
||||
rx_rate,
|
||||
protocol_mode,
|
||||
num_sub_carrier,
|
||||
num_bit_per_tone,
|
||||
decimation,
|
||||
rssi_dbm,
|
||||
rxsc,
|
||||
csi_valid,
|
||||
flags,
|
||||
payload,
|
||||
};
|
||||
frame.validate()?;
|
||||
Ok((frame, frame_len))
|
||||
}
|
||||
|
||||
fn validate(&self) -> Result<(), CsiParseError> {
|
||||
if !matches!(self.bandwidth, 0 | 1) {
|
||||
return Err(CsiParseError::InvalidBandwidth(self.bandwidth));
|
||||
}
|
||||
let comp_bytes = self.component_bytes()?;
|
||||
if self.num_sub_carrier == 0 || self.num_sub_carrier as usize > RAC1_MAX_SUBCARRIERS {
|
||||
return Err(CsiParseError::InvalidSubcarrierCount(self.num_sub_carrier));
|
||||
}
|
||||
if self.payload.len() != self.num_sub_carrier as usize {
|
||||
return Err(CsiParseError::PayloadLengthMismatch);
|
||||
}
|
||||
if comp_bytes == 1 {
|
||||
let in_range = |v: i16| (i8::MIN as i16..=i8::MAX as i16).contains(&v);
|
||||
if self.payload.iter().any(|(i, q)| !in_range(*i) || !in_range(*q)) {
|
||||
return Err(CsiParseError::ToneValueOutOfRange);
|
||||
}
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Debug, Error, PartialEq)]
|
||||
pub enum CsiParseError {
|
||||
#[error("insufficient data: needed {needed}, got {got}")]
|
||||
InsufficientData { needed: usize, got: usize },
|
||||
#[error("invalid magic {0:#010x}")]
|
||||
InvalidMagic(u32),
|
||||
#[error("unsupported version {0}")]
|
||||
UnsupportedVersion(u8),
|
||||
#[error("unknown CSI mode {0}")]
|
||||
UnknownCsiMode(u8),
|
||||
#[error("unknown protocol mode {0}")]
|
||||
UnknownProtocolMode(u8),
|
||||
#[error("invalid header length {0}")]
|
||||
InvalidHeaderLength(usize),
|
||||
#[error("invalid frame length {0}")]
|
||||
InvalidFrameLength(usize),
|
||||
#[error("frame too large: {0}")]
|
||||
FrameTooLarge(usize),
|
||||
#[error("length arithmetic overflow")]
|
||||
LengthOverflow,
|
||||
#[error("payload length mismatch")]
|
||||
PayloadLengthMismatch,
|
||||
#[error("invalid num_bit_per_tone {0} (must be 16 or 32)")]
|
||||
InvalidToneBits(u8),
|
||||
#[error("invalid subcarrier count {0}")]
|
||||
InvalidSubcarrierCount(u16),
|
||||
#[error("invalid bandwidth code {0} (must be 0 or 1)")]
|
||||
InvalidBandwidth(u8),
|
||||
#[error("tone I/Q value out of range for 8-bit precision")]
|
||||
ToneValueOutOfRange,
|
||||
#[error("CRC mismatch: expected {expected:#010x}, actual {actual:#010x}")]
|
||||
CrcMismatch { expected: u32, actual: u32 },
|
||||
}
|
||||
|
||||
pub mod simulator {
|
||||
use super::*;
|
||||
|
||||
#[derive(Debug, Clone)]
|
||||
pub struct SimulatorConfig {
|
||||
pub seed: u64,
|
||||
pub node_id: u8,
|
||||
pub csi_mode: CsiMode,
|
||||
pub peer_mac: [u8; 6],
|
||||
pub trig_mac: [u8; 6],
|
||||
pub channel: u8,
|
||||
pub bandwidth: u8,
|
||||
pub rx_rate: u8,
|
||||
pub protocol_mode: ProtocolMode,
|
||||
pub num_sub_carrier: u16,
|
||||
pub num_bit_per_tone: u8,
|
||||
pub decimation: u8,
|
||||
pub rssi_dbm: i8,
|
||||
pub frame_period_us: u32,
|
||||
}
|
||||
|
||||
impl Default for SimulatorConfig {
|
||||
fn default() -> Self {
|
||||
Self {
|
||||
seed: 0x5241_4331_5254_4c31, // "RAC1RTL1"-ish
|
||||
node_id: 1,
|
||||
csi_mode: CsiMode::Passive,
|
||||
peer_mac: [0xa4, 0x39, 0xb3, 0xa4, 0xbe, 0x2d],
|
||||
trig_mac: [0x00, 0xe0, 0x4c, 0x00, 0x0a, 0xa3],
|
||||
channel: 6,
|
||||
bandwidth: 0,
|
||||
rx_rate: 12, // RTW_RATE_6M
|
||||
protocol_mode: ProtocolMode::Ofdm,
|
||||
num_sub_carrier: 52,
|
||||
num_bit_per_tone: 16,
|
||||
decimation: 1,
|
||||
rssi_dbm: -45,
|
||||
frame_period_us: 64_000,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
pub struct RealtekCsiSimulator {
|
||||
config: SimulatorConfig,
|
||||
rng: u64,
|
||||
sequence: u32,
|
||||
timestamp_us: u32,
|
||||
motion_phase: f32,
|
||||
}
|
||||
|
||||
impl RealtekCsiSimulator {
|
||||
pub fn new(config: SimulatorConfig) -> Result<Self, CsiParseError> {
|
||||
let s = Self {
|
||||
rng: config.seed,
|
||||
config,
|
||||
sequence: 0,
|
||||
timestamp_us: 0,
|
||||
motion_phase: 0.0,
|
||||
};
|
||||
s.csi_frame().validate()?;
|
||||
Ok(s)
|
||||
}
|
||||
|
||||
pub fn next_frame(&mut self) -> CsiFrame {
|
||||
let frame = self.csi_frame();
|
||||
self.sequence = self.sequence.wrapping_add(1);
|
||||
self.timestamp_us = self.timestamp_us.wrapping_add(self.config.frame_period_us);
|
||||
self.motion_phase += 0.041;
|
||||
frame
|
||||
}
|
||||
|
||||
fn csi_frame(&self) -> CsiFrame {
|
||||
let mut rng = self.rng ^ self.sequence as u64;
|
||||
let comp_max = if self.config.num_bit_per_tone == 16 {
|
||||
110.0
|
||||
} else {
|
||||
1800.0
|
||||
};
|
||||
let payload = (0..self.config.num_sub_carrier as usize)
|
||||
.map(|tone| {
|
||||
rng ^= rng << 13;
|
||||
rng ^= rng >> 7;
|
||||
rng ^= rng << 17;
|
||||
let noise = ((rng >> 48) as i16 % 8) as f32;
|
||||
let phase = tone as f32 * 0.11 + self.motion_phase;
|
||||
(
|
||||
((phase.cos() * comp_max) + noise) as i16,
|
||||
((phase.sin() * comp_max) - noise) as i16,
|
||||
)
|
||||
})
|
||||
.collect();
|
||||
CsiFrame {
|
||||
node_id: self.config.node_id,
|
||||
csi_mode: self.config.csi_mode,
|
||||
sequence: self.sequence,
|
||||
timestamp_us: self.timestamp_us,
|
||||
peer_mac: self.config.peer_mac,
|
||||
trig_mac: self.config.trig_mac,
|
||||
channel: self.config.channel,
|
||||
bandwidth: self.config.bandwidth,
|
||||
rx_rate: self.config.rx_rate,
|
||||
protocol_mode: self.config.protocol_mode,
|
||||
num_sub_carrier: self.config.num_sub_carrier,
|
||||
num_bit_per_tone: self.config.num_bit_per_tone,
|
||||
decimation: self.config.decimation,
|
||||
rssi_dbm: self.config.rssi_dbm,
|
||||
rxsc: 0,
|
||||
csi_valid: true,
|
||||
flags: CsiFlags(CsiFlags::SYNTHETIC),
|
||||
payload,
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn u16_at(b: &[u8], o: usize) -> u16 {
|
||||
u16::from_le_bytes([b[o], b[o + 1]])
|
||||
}
|
||||
fn u32_at(b: &[u8], o: usize) -> u32 {
|
||||
u32::from_le_bytes(b[o..o + 4].try_into().unwrap())
|
||||
}
|
||||
fn crc32_ieee(data: &[u8]) -> u32 {
|
||||
let mut crc = 0xffff_ffffu32;
|
||||
for &byte in data {
|
||||
crc ^= byte as u32;
|
||||
for _ in 0..8 {
|
||||
crc = (crc >> 1) ^ ((0u32.wrapping_sub(crc & 1)) & 0xedb8_8320);
|
||||
}
|
||||
}
|
||||
!crc
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::*;
|
||||
use simulator::*;
|
||||
|
||||
#[test]
|
||||
fn simulator_round_trip_is_deterministic() {
|
||||
let cfg = SimulatorConfig::default();
|
||||
let mut a = RealtekCsiSimulator::new(cfg.clone()).unwrap();
|
||||
let mut b = RealtekCsiSimulator::new(cfg).unwrap();
|
||||
let wa = a.next_frame().to_bytes().unwrap();
|
||||
assert_eq!(wa, b.next_frame().to_bytes().unwrap());
|
||||
let (decoded, n) = CsiFrame::from_bytes(&wa).unwrap();
|
||||
assert_eq!(n, wa.len());
|
||||
assert!(decoded.flags.contains(CsiFlags::SYNTHETIC));
|
||||
assert_eq!(decoded.payload.len(), 52);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn sixteen_bit_precision_round_trip() {
|
||||
let cfg = SimulatorConfig {
|
||||
num_bit_per_tone: 32,
|
||||
..Default::default()
|
||||
};
|
||||
let mut sim = RealtekCsiSimulator::new(cfg).unwrap();
|
||||
let frame = sim.next_frame();
|
||||
let wire = frame.to_bytes().unwrap();
|
||||
let (decoded, n) = CsiFrame::from_bytes(&wire).unwrap();
|
||||
assert_eq!(n, wire.len());
|
||||
assert_eq!(decoded, frame);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn crc_corruption_is_rejected() {
|
||||
let mut s = RealtekCsiSimulator::new(SimulatorConfig::default()).unwrap();
|
||||
let mut w = s.next_frame().to_bytes().unwrap();
|
||||
let last = w.len() - 1;
|
||||
w[last] ^= 1;
|
||||
assert!(matches!(
|
||||
CsiFrame::from_bytes(&w),
|
||||
Err(CsiParseError::CrcMismatch { .. })
|
||||
));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn truncation_is_rejected() {
|
||||
let mut s = RealtekCsiSimulator::new(SimulatorConfig::default()).unwrap();
|
||||
let w = s.next_frame().to_bytes().unwrap();
|
||||
assert!(matches!(
|
||||
CsiFrame::from_bytes(&w[..w.len() - 1]),
|
||||
Err(CsiParseError::InsufficientData { .. })
|
||||
));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn zero_subcarriers_is_rejected() {
|
||||
let cfg = SimulatorConfig {
|
||||
num_sub_carrier: 0,
|
||||
..Default::default()
|
||||
};
|
||||
assert!(matches!(
|
||||
RealtekCsiSimulator::new(cfg),
|
||||
Err(CsiParseError::InvalidSubcarrierCount(0))
|
||||
));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn invalid_tone_bits_is_rejected() {
|
||||
let cfg = SimulatorConfig {
|
||||
num_bit_per_tone: 24,
|
||||
..Default::default()
|
||||
};
|
||||
assert!(matches!(
|
||||
RealtekCsiSimulator::new(cfg),
|
||||
Err(CsiParseError::InvalidToneBits(24))
|
||||
));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn parser_never_panics_on_prefixes() {
|
||||
let mut s = RealtekCsiSimulator::new(SimulatorConfig::default()).unwrap();
|
||||
let w = s.next_frame().to_bytes().unwrap();
|
||||
for end in 0..w.len() {
|
||||
let _ = CsiFrame::from_bytes(&w[..end]);
|
||||
}
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn magic_mismatch_is_rejected() {
|
||||
let mut s = RealtekCsiSimulator::new(SimulatorConfig::default()).unwrap();
|
||||
let mut w = s.next_frame().to_bytes().unwrap();
|
||||
w[0] ^= 0xff;
|
||||
assert!(matches!(
|
||||
CsiFrame::from_bytes(&w),
|
||||
Err(CsiParseError::InvalidMagic(_))
|
||||
));
|
||||
}
|
||||
}
|
||||
@@ -19,6 +19,7 @@ mod model_format;
|
||||
mod multistatic_bridge;
|
||||
mod mediatek_csi;
|
||||
mod qualcomm_csi;
|
||||
mod realtek_csi;
|
||||
mod realtek_radar;
|
||||
mod path_safety;
|
||||
pub mod pose;
|
||||
@@ -1768,6 +1769,10 @@ struct AppStateInner {
|
||||
latest_qualcomm_csi: Option<qualcomm_csi::QualcommCsiSnapshot>,
|
||||
/// Instant of the last validated Qualcomm CSI UDP frame.
|
||||
last_qualcomm_frame: Option<std::time::Instant>,
|
||||
/// Latest validated RTL8721Dx CSI summary; distinct from RTL8720F radar.
|
||||
latest_realtek_csi: Option<realtek_csi::RealtekCsiSnapshot>,
|
||||
/// Instant of the last validated RTL8721Dx CSI UDP frame.
|
||||
last_realtek_csi_frame: Option<std::time::Instant>,
|
||||
/// Latest bounded ADR-270 event per vendor. Complex CSI uses dedicated transports.
|
||||
latest_vendor_rf: BTreeMap<String, wifi_densepose_sensing_server::vendor_rf::VendorEventSnapshot>,
|
||||
tx: broadcast::Sender<String>,
|
||||
@@ -2312,7 +2317,13 @@ impl AppStateInner {
|
||||
}
|
||||
}
|
||||
}
|
||||
if self.source.starts_with("realtek") {
|
||||
if self.source.starts_with("realtek_csi") {
|
||||
if let Some(last) = self.last_realtek_csi_frame {
|
||||
if last.elapsed() > ESP32_OFFLINE_TIMEOUT {
|
||||
return format!("{}:offline", self.source);
|
||||
}
|
||||
}
|
||||
} else if self.source.starts_with("realtek") {
|
||||
if let Some(last) = self.last_realtek_frame {
|
||||
if last.elapsed() > ESP32_OFFLINE_TIMEOUT {
|
||||
return format!("{}:offline", self.source);
|
||||
@@ -2382,6 +2393,8 @@ impl AppStateInner {
|
||||
last_mediatek_frame: None,
|
||||
latest_qualcomm_csi: None,
|
||||
last_qualcomm_frame: None,
|
||||
latest_realtek_csi: None,
|
||||
last_realtek_csi_frame: None,
|
||||
latest_vendor_rf: BTreeMap::new(),
|
||||
tx: broadcast::channel::<String>(16).0,
|
||||
intro: wifi_densepose_sensing_server::introspection::IntrospectionState::new(),
|
||||
@@ -4869,6 +4882,53 @@ async fn latest_qualcomm_csi(State(state): State<SharedState>) -> Json<serde_jso
|
||||
}
|
||||
}
|
||||
|
||||
async fn latest_realtek_csi(State(state): State<SharedState>) -> Json<serde_json::Value> {
|
||||
let s = state.read().await;
|
||||
match &s.latest_realtek_csi {
|
||||
Some(snapshot) => Json(serde_json::to_value(snapshot).unwrap_or_default()),
|
||||
None => Json(serde_json::json!({"status": "no Realtek RTL8721Dx CSI data yet"})),
|
||||
}
|
||||
}
|
||||
|
||||
fn primary_source_with_realtek(
|
||||
last_esp32_frame: Option<std::time::Instant>,
|
||||
realtek_source: &str,
|
||||
) -> String {
|
||||
if last_esp32_frame.is_some_and(|seen| seen.elapsed() < ESP32_OFFLINE_TIMEOUT) {
|
||||
"esp32".to_string()
|
||||
} else {
|
||||
realtek_source.to_string()
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod realtek_ingest_tests {
|
||||
use super::*;
|
||||
use wifi_densepose_hardware::realtek_csi::simulator::{RealtekCsiSimulator, SimulatorConfig};
|
||||
|
||||
#[test]
|
||||
fn secondary_realtek_does_not_displace_fresh_esp32_room_source() {
|
||||
assert_eq!(
|
||||
primary_source_with_realtek(Some(std::time::Instant::now()), "realtek_csi"),
|
||||
"esp32"
|
||||
);
|
||||
assert_eq!(primary_source_with_realtek(None, "realtek_csi"), "realtek_csi");
|
||||
}
|
||||
|
||||
#[tokio::test]
|
||||
async fn latest_route_keeps_synthetic_provenance_and_node_identity() {
|
||||
let state: SharedState = Arc::new(RwLock::new(AppStateInner::minimal()));
|
||||
let mut simulator = RealtekCsiSimulator::new(SimulatorConfig::default()).unwrap();
|
||||
let snapshot = realtek_csi::RealtekCsiSnapshot::from_frame(&simulator.next_frame());
|
||||
let expected_node_id = snapshot.node_id;
|
||||
state.write().await.latest_realtek_csi = Some(snapshot);
|
||||
let Json(value) = latest_realtek_csi(State(state)).await;
|
||||
assert_eq!(value["node_id"], expected_node_id);
|
||||
assert_eq!(value["source"], "realtek_csi:simulated");
|
||||
assert_eq!(value["synthetic"], true);
|
||||
}
|
||||
}
|
||||
|
||||
async fn vendor_descriptors() -> Json<serde_json::Value> {
|
||||
Json(
|
||||
serde_json::to_value(wifi_densepose_sensing_server::vendor_rf::descriptors())
|
||||
@@ -8826,7 +8886,7 @@ async fn udp_receiver_task(
|
||||
let addr = format!("{bind_ip}:{udp_port}");
|
||||
let socket = match UdpSocket::bind(&addr).await {
|
||||
Ok(s) => {
|
||||
info!("UDP listening on {addr} for ESP32, MediaTek, Qualcomm CSI, and RTL8720F radar frames");
|
||||
info!("UDP listening on {addr} for ESP32, MediaTek, Qualcomm, RTL8721Dx CSI, and RTL8720F radar frames");
|
||||
s
|
||||
}
|
||||
Err(e) => {
|
||||
@@ -8928,6 +8988,33 @@ async fn udp_receiver_task(
|
||||
}
|
||||
continue;
|
||||
}
|
||||
if len >= 4
|
||||
&& u32::from_le_bytes(buf[..4].try_into().expect("four-byte slice"))
|
||||
== wifi_densepose_hardware::realtek_csi::RAC1_MAGIC
|
||||
{
|
||||
match wifi_densepose_hardware::realtek_csi::CsiFrame::from_bytes(&buf[..len]) {
|
||||
Ok((frame, consumed)) if consumed == len => {
|
||||
let snapshot = realtek_csi::RealtekCsiSnapshot::from_frame(&frame);
|
||||
debug!("RTL8721Dx CSI from {src}: node={} seq={} subcarriers={}", snapshot.node_id, snapshot.sequence, snapshot.num_sub_carrier);
|
||||
let json = serde_json::to_string(&snapshot).ok();
|
||||
let mut s = state.write().await;
|
||||
// A secondary Realtek link must not replace a fresh ESP32
|
||||
// room source and make its vitals disappear from the UI.
|
||||
s.source = primary_source_with_realtek(
|
||||
s.last_esp32_frame,
|
||||
snapshot.source,
|
||||
);
|
||||
s.last_realtek_csi_frame = Some(std::time::Instant::now());
|
||||
s.latest_realtek_csi = Some(snapshot);
|
||||
if let Some(json) = json {
|
||||
let _ = s.tx.send(json);
|
||||
}
|
||||
}
|
||||
Ok((_, consumed)) => warn!("RTL8721Dx CSI datagram from {src} has trailing bytes: consumed={consumed} received={len}"),
|
||||
Err(error) => warn!("Rejected RTL8721Dx CSI datagram from {src}: {error}"),
|
||||
}
|
||||
continue;
|
||||
}
|
||||
// ADR-039: Try edge vitals packet first (magic 0xC511_0002).
|
||||
if let Some(vitals) = parse_esp32_vitals(&buf[..len]) {
|
||||
debug!(
|
||||
@@ -11271,6 +11358,8 @@ async fn main() {
|
||||
last_mediatek_frame: None,
|
||||
latest_qualcomm_csi: None,
|
||||
last_qualcomm_frame: None,
|
||||
latest_realtek_csi: None,
|
||||
last_realtek_csi_frame: None,
|
||||
latest_vendor_rf: BTreeMap::new(),
|
||||
tx,
|
||||
intro: wifi_densepose_sensing_server::introspection::IntrospectionState::new(),
|
||||
@@ -11616,6 +11705,7 @@ async fn main() {
|
||||
.route("/api/v1/radar/latest", get(latest_realtek_radar))
|
||||
.route("/api/v1/csi/mediatek/latest", get(latest_mediatek_csi))
|
||||
.route("/api/v1/csi/qualcomm/latest", get(latest_qualcomm_csi))
|
||||
.route("/api/v1/csi/realtek/latest", get(latest_realtek_csi))
|
||||
.route("/api/v1/rf/vendors", get(vendor_descriptors))
|
||||
.route("/api/v1/rf/vendors/latest", get(latest_vendor_events))
|
||||
.route("/api/v1/rf/vendors/:vendor/latest", get(latest_vendor_event))
|
||||
|
||||
@@ -0,0 +1,124 @@
|
||||
//! Bounded summaries for ADR-323 Realtek RTL8721Dx (AmebaDplus) 1x1 CSI frames.
|
||||
|
||||
use serde::Serialize;
|
||||
use wifi_densepose_hardware::realtek_csi::{CsiFlags, CsiFrame};
|
||||
|
||||
#[derive(Debug, Clone, PartialEq, Serialize)]
|
||||
pub(crate) struct RealtekCsiSnapshot {
|
||||
pub event_type: &'static str,
|
||||
pub source: &'static str,
|
||||
pub csi_mode: &'static str,
|
||||
pub node_id: u8,
|
||||
pub sequence: u32,
|
||||
pub timestamp_us: u32,
|
||||
pub peer_mac: String,
|
||||
pub trig_mac: String,
|
||||
pub channel: u8,
|
||||
pub bandwidth_mhz: u16,
|
||||
pub rx_rate: u8,
|
||||
pub protocol_mode: String,
|
||||
pub num_sub_carrier: u16,
|
||||
pub num_bit_per_tone: u8,
|
||||
pub decimation: u8,
|
||||
pub rssi_dbm: i8,
|
||||
pub rxsc: u8,
|
||||
pub csi_valid: bool,
|
||||
pub synthetic: bool,
|
||||
pub mean_amplitude: Option<f32>,
|
||||
pub peak_amplitude: Option<f32>,
|
||||
}
|
||||
|
||||
impl RealtekCsiSnapshot {
|
||||
pub(crate) fn from_frame(frame: &CsiFrame) -> Self {
|
||||
let synthetic = frame.flags.contains(CsiFlags::SYNTHETIC);
|
||||
let (mean_amplitude, peak_amplitude) = amplitude_summary(frame);
|
||||
Self {
|
||||
event_type: "realtek_csi",
|
||||
source: if synthetic {
|
||||
"realtek_csi:simulated"
|
||||
} else {
|
||||
"realtek_csi"
|
||||
},
|
||||
csi_mode: match frame.csi_mode {
|
||||
wifi_densepose_hardware::realtek_csi::CsiMode::Passive => "passive",
|
||||
wifi_densepose_hardware::realtek_csi::CsiMode::Active => "active",
|
||||
wifi_densepose_hardware::realtek_csi::CsiMode::BoardToBoard => "board_to_board",
|
||||
},
|
||||
node_id: frame.node_id,
|
||||
sequence: frame.sequence,
|
||||
timestamp_us: frame.timestamp_us,
|
||||
peer_mac: mac_string(&frame.peer_mac),
|
||||
trig_mac: mac_string(&frame.trig_mac),
|
||||
channel: frame.channel,
|
||||
bandwidth_mhz: if frame.bandwidth == 1 { 40 } else { 20 },
|
||||
rx_rate: frame.rx_rate,
|
||||
protocol_mode: format!("{:?}", frame.protocol_mode).to_ascii_lowercase(),
|
||||
num_sub_carrier: frame.num_sub_carrier,
|
||||
num_bit_per_tone: frame.num_bit_per_tone,
|
||||
decimation: frame.decimation,
|
||||
rssi_dbm: frame.rssi_dbm,
|
||||
rxsc: frame.rxsc,
|
||||
csi_valid: frame.csi_valid,
|
||||
synthetic,
|
||||
mean_amplitude,
|
||||
peak_amplitude,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn mac_string(mac: &[u8; 6]) -> String {
|
||||
mac.iter()
|
||||
.map(|b| format!("{b:02x}"))
|
||||
.collect::<Vec<_>>()
|
||||
.join(":")
|
||||
}
|
||||
|
||||
fn amplitude_summary(frame: &CsiFrame) -> (Option<f32>, Option<f32>) {
|
||||
if frame.payload.is_empty() {
|
||||
return (None, None);
|
||||
}
|
||||
let amplitudes: Vec<f32> = frame
|
||||
.payload
|
||||
.iter()
|
||||
.map(|(i, q)| (*i as f32).hypot(*q as f32))
|
||||
.collect();
|
||||
let mean = amplitudes.iter().sum::<f32>() / amplitudes.len() as f32;
|
||||
let peak = amplitudes.into_iter().max_by(f32::total_cmp);
|
||||
(Some(mean), peak)
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::*;
|
||||
use wifi_densepose_hardware::realtek_csi::simulator::{RealtekCsiSimulator, SimulatorConfig};
|
||||
|
||||
#[test]
|
||||
fn simulator_summary_preserves_dimensions_and_provenance() {
|
||||
let mut sim = RealtekCsiSimulator::new(SimulatorConfig::default()).unwrap();
|
||||
let snapshot = RealtekCsiSnapshot::from_frame(&sim.next_frame());
|
||||
assert_eq!(snapshot.source, "realtek_csi:simulated");
|
||||
assert_eq!(snapshot.num_sub_carrier, 52);
|
||||
assert_eq!(snapshot.csi_mode, "passive");
|
||||
assert!(snapshot.mean_amplitude.unwrap() > 0.0);
|
||||
assert!(snapshot.peak_amplitude.unwrap() >= snapshot.mean_amplitude.unwrap());
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn source_string_is_distinct_from_realtek_radar() {
|
||||
let mut sim = RealtekCsiSimulator::new(SimulatorConfig::default()).unwrap();
|
||||
let snapshot = RealtekCsiSnapshot::from_frame(&sim.next_frame());
|
||||
// Must never collapse to the bare "realtek"/"realtek:simulated" source
|
||||
// strings already owned by the RTL8720F radar path (realtek_radar.rs) —
|
||||
// effective_source()'s prefix matching in main.rs depends on this.
|
||||
assert_ne!(snapshot.source, "realtek");
|
||||
assert_ne!(snapshot.source, "realtek:simulated");
|
||||
assert!(snapshot.source.starts_with("realtek_csi"));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn mac_addresses_are_formatted_colon_separated() {
|
||||
let mut sim = RealtekCsiSimulator::new(SimulatorConfig::default()).unwrap();
|
||||
let snapshot = RealtekCsiSnapshot::from_frame(&sim.next_frame());
|
||||
assert_eq!(snapshot.peer_mac, "a4:39:b3:a4:be:2d");
|
||||
}
|
||||
}
|
||||
Reference in new issue
Block a user