Both capture scripts decoded a header layout the firmware does not send.
csi_collector.c and esp32_parser.rs use: magic u32 @0, node_id @4,
n_antennas @5, n_subcarriers u16 @6, freq_mhz u32 @8, sequence u32 @12,
rssi i8 @16, noise_floor i8 @17, ppdu_type @18, flags @19, then
n_antennas * n_subcarriers int8 I/Q pairs from @20.
- collect-training-data.py read a 16-byte header and int16 I/Q, so its
length check rejected every real single-antenna frame. It now reads the
20-byte header and int8 pairs, records freq/channel/seq/ppdu/flags, and
lets the recorder stamp receive time (the header has no timestamp).
- record-csi-udp.py read rssi from byte 6 and channel from byte 7 (the
n_subcarriers bytes) and treated bytes 8-19 as I/Q, so a 64-subcarrier
frame came out as 70 subcarriers with header bytes in the first six
amplitudes. It now checks the magic, reads the real fields, and writes
only the I/Q block to iq_hex.
- Add scripts/tests/test_capture_adr018.py, which builds frames with the
esp32_parser.rs test layout and checks the decoded fields.
Co-Authored-By: claude-flow <ruv@ruv.net>
