Heartbeat POST now captures the response body (up to 2048 bytes) and
looks for a "config" object. If cfg_version advances past the stored
value and all tunable fields pass range validation, the new tuning is
applied to g_cv and persisted to NVS.
- cv_tuning_validate: pure range checker (cv.cpp)
- cv_apply_tuning / cv_get_tuning: mutex-guarded helpers in main.cpp
exposed via cv_apply.h; 500 ms timeout, drop on contention
- post_json now returns int (HTTP status) and optionally captures the
response body; existing callers check == 200
- heartbeat: parse → cfg_version check → override present fields →
validate → apply → save. Silent no-op when server returns no config.
- 3 new native tests (15/15 pass). timercam flash 1,423,897 bytes
(+9,828 vs baseline).
cv_process and helpers (frame_diff, extract_blob, find_centroids) now read
diff_thresh, min_blob_px, max_move, max_missed, and line_offset from
state.tuning instead of file-scope static const constants. The four
thresholds are promoted to file-local constexpr defaults in cv.cpp
(CV_DEFAULT_*) and are no longer part of the public cv.h API — external
code can't depend on them.
cv_process signature drops the line_pct parameter; callers use
state.tuning.line_offset instead. This eliminates the drift hazard of
having two sources of truth (DeviceConfig.line_offset vs
CVTuning.line_offset); the former is deleted.
main.cpp now calls config_load_tuning(g_cv.tuning) after cv_init on boot
so previously persisted tuning survives reboot; logs whether tuning came
from NVS or defaults.
The legacy NVS key "line_offset" is intentionally left alone — harmless
and flash_device.py may still write it during provisioning. Migration is
out of scope.
Tests: 12/12 passing (11 existing + 1 new
test_cv_process_respects_runtime_min_blob proving the runtime-read path).
Flash: 1,414,069 bytes (89.9%).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Adds CVTuning to CVState, populates defaults from existing file-scope
constants in cv_init, and introduces config_load_tuning/config_save_tuning
backed by the doorcounter NVS namespace. No runtime behavior change yet;
CV code still reads the existing constants (Task 2 will migrate reads).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
- hmac_sign now takes method+path instead of device_id; builds message as
method\npath\ntimestamp\nhex(sha256(body)) per server verify_device_hmac
- reporter: header renamed X-HMAC-Signature → X-Signature; passes "POST"+path
- test vector regenerated against new message format; timestamp-diff test updated
- .size() → .length() throughout (Arduino String has no size())
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Add BFS flood-fill blob extraction, centroid finding, and nearest-neighbour track matching/spawning inside cv_process. Add test verifying a new blob spawns a track.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
