Factory reset: 5x clears config, 10x also clears WiFi credentials

src/main.cpp

@@ -392,11 +392,11 @@ static void startServer() {
 }
 
 // ---------------------------------------------------------------------------
-// Factory reset (rapid reset 5x within a few seconds)
+// Factory reset (5x = config only, 10x = config + WiFi credentials)
 // ---------------------------------------------------------------------------
 
-static void factoryReset() {
-  Serial.println("[BOOT] factory reset triggered!");
+static void factoryReset(bool clearWifi) {
+  Serial.printf("[BOOT] factory reset triggered (clearWifi=%d)!\n", clearWifi);
 
   strlcpy(hostname, HOSTNAME_DEFAULT, sizeof(hostname));
   hostnameParam.setValue(hostname, strlen(hostname));
@@ -413,13 +413,20 @@ static void factoryReset() {
 
   saveConfig();
 
+  if (clearWifi) {
+    WiFiManager wm;
+    wm.resetSettings();
+    Serial.println("[BOOT] WiFi credentials erased");
+  }
+
   Serial.println("[BOOT] factory reset complete, restarting...");
   delay(200);
   ESP.restart();
 }
 
 static void checkFactoryReset() {
-  const int THRESHOLD = 5;
+  const int THRESHOLD_CONFIG = 5;
+  const int THRESHOLD_WIFI   = 10;
   int count = 0;
   File f = LittleFS.open("/reset_count", "r");
   if (f) {
@@ -427,17 +434,17 @@ static void checkFactoryReset() {
     f.close();
   }
   count++;
-  if (count >= THRESHOLD) {
+  if (count >= THRESHOLD_CONFIG) {
     LittleFS.remove("/reset_count");
     Serial.printf("[BOOT] reset count %d, triggering factory reset\n", count);
-    factoryReset();
+    factoryReset(count >= THRESHOLD_WIFI);
     return;
   }
   f = LittleFS.open("/reset_count", "w");
   if (f) {
     f.print(count);
     f.close();
-    Serial.printf("[BOOT] reset count %d/%d\n", count, THRESHOLD);
+    Serial.printf("[BOOT] reset count %d/%d\n", count, THRESHOLD_CONFIG);
   }
 }