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feat(cv): add CVTuning struct and NVS persistence scaffolding

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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>
This commit is contained in:
Peter Woolery
2026-04-16 15:45:53 -07:00
parent 9d5b588231
commit e28a4c1863
5 changed files with 92 additions and 0 deletions
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47
firmware/src/config.cpp
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@@ -46,3 +46,50 @@ void config_clear_wifi() {
prefs.remove("wifi_pass");
prefs.end();
}
bool config_load_tuning(CVTuning& tuning) {
Preferences prefs;
prefs.begin(NS, true); // read-only
uint32_t ver = prefs.getUInt("cv_ver", UINT32_MAX);
if (ver == UINT32_MAX) {
prefs.end();
return false;
}
// All six keys must be present; use sentinels to detect missing.
uint32_t diff = prefs.getUInt("cv_diff", UINT32_MAX);
uint32_t blob = prefs.getUInt("cv_blob", UINT32_MAX);
uint32_t miss = prefs.getUInt("cv_miss", UINT32_MAX);
uint32_t line = prefs.getUInt("cv_line", UINT32_MAX);
bool has_move = prefs.isKey("cv_move");
float move = prefs.getFloat("cv_move", 0.0f);
prefs.end();
if (diff == UINT32_MAX || blob == UINT32_MAX ||
miss == UINT32_MAX || line == UINT32_MAX || !has_move) {
return false;
}
tuning.diff_thresh = (uint8_t)diff;
tuning.min_blob_px = (int)blob;
tuning.max_move = move;
tuning.max_missed = (int)miss;
tuning.line_offset = (uint8_t)line;
tuning.cfg_version = ver;
return true;
}
bool config_save_tuning(const CVTuning& tuning) {
Preferences prefs;
prefs.begin(NS, false);
size_t r1 = prefs.putUInt("cv_diff", (uint32_t)tuning.diff_thresh);
size_t r2 = prefs.putUInt("cv_blob", (uint32_t)tuning.min_blob_px);
size_t r3 = prefs.putFloat("cv_move", tuning.max_move);
size_t r4 = prefs.putUInt("cv_miss", (uint32_t)tuning.max_missed);
size_t r5 = prefs.putUInt("cv_line", (uint32_t)tuning.line_offset);
size_t r6 = prefs.putUInt("cv_ver", tuning.cfg_version);
prefs.end();
return (r1 > 0) && (r2 > 0) && (r3 > 0) && (r4 > 0) && (r5 > 0) && (r6 > 0);
}