Module csi 

Host-side decoder for the firmware’s serialized CSI wire format.

WebSocket frames from csi-webserver-rs are the device’s serialized records: each is postcard::to_slice_cobs(&CSIDataPacket) — a COBS-framed, postcard-encoded struct — with the trailing \0 COBS terminator stripped by the server. This module mirrors that on-device struct so the client can decode frames into typed fields for local Parquet export, exactly as the server does for its own dumps.

Why the struct is mirrored, not imported

esp-csi-rs is an esp-hal crate and cannot compile for a desktop host, so the wire types are re-declared here. postcard is not self-describing and uses varint encoding, so these mirrors must match the firmware field-for- field, in order. Pinned to esp-csi-rs 0.8.0. When the firmware bumps its protocol/struct, update these definitions in lockstep with the server.

Structs

DateTime

Optional NTP-derived calendar timestamp the firmware may attach to a packet.

DecodeError

Failure decoding a serialized CSI frame.

DecodedCsi

Chip-agnostic decoded CSI record — the superset of every layout’s fields.

PacketA

esp32 / esp32c3 / esp32s3 layout — mirror of CSIDataPacket (#[cfg(not(any(esp32c5, esp32c6)))]). Field order is the wire order.

PacketBc5

esp32c5 layout — mirror of the #[cfg(any(esp32c5, esp32c6))] CSIDataPacket without the #[cfg(feature = "esp32c6")] fields. Field order is the wire order.

PacketBc6

esp32c6 layout — the c5 layout plus the three #[cfg(feature = "esp32c6")] fields (he_sigb_len, cur_single_mpdu, rxmatch0) at their declared positions. Field order is the wire order.

Enums

ChipVariant

Which on-device CSIDataPacket layout a connected chip produces.

RxCsiFmt

Compact CSI data-format descriptor.

Functions

decode

Decode one COBS-framed postcard CSI frame into a DecodedCsi.