From 91d91ebd0804c5f4aabbe890958659202d1e2c10 Mon Sep 17 00:00:00 2001
From: Timothy Yin <master@uniiem.com>
Date: Mon, 16 Mar 2026 01:46:32 +0800
Subject: [PATCH] =?UTF-8?q?feat(main):=20=E8=87=AA=E5=8A=A8=E7=94=9F?=
 =?UTF-8?q?=E6=88=90=E5=85=85=E7=94=B5=E7=82=B9=E6=A0=87=E8=AF=86=E7=AC=A6?=
 =?UTF-8?q?=E5=B9=B6=E4=BC=98=E5=8C=96WiFi=E8=AE=BE=E7=BD=AE?=
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---
 hardware/firmware/src/main.cpp | 39 ++++++++++++++++++++++------------
 1 file changed, 25 insertions(+), 14 deletions(-)

diff --git a/hardware/firmware/src/main.cpp b/hardware/firmware/src/main.cpp
index 684af38..c3cfcd9 100644
--- a/hardware/firmware/src/main.cpp
+++ b/hardware/firmware/src/main.cpp
@@ -144,6 +144,10 @@ void setup()
   snprintf(cpSerial, sizeof(cpSerial),
            "%02X%02X%02X%02X%02X%02X",
            mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
+
+  // Auto-generate Charge Point Identifier based on MAC (e.g. HLCP_A1B2C3)
+  snprintf(cp_identifier, sizeof(cp_identifier), "HLCP_%s", cpSerial + 6);
+
   // reset LED
   leds[0] = Rgb{0, 0, 0};
   leds.show();
@@ -165,11 +169,12 @@ void setup()
   Preferences preferences;
   preferences.begin("ocpp-config", false);
   String b = preferences.getString("backend", CFG_OCPP_BACKEND);
-  String i = preferences.getString("identifier", CFG_CP_IDENTIFIER);
-  String a = preferences.getString("auth_key", "");
+  String a = preferences.getString("auth_key", CFG_AUTHORIZATIONKEY ? CFG_AUTHORIZATIONKEY : "");
+
+  Serial.printf("\n[OCPP] Loaded Backend URL: %s\n", b.c_str());
+  Serial.printf("[OCPP] Loaded Auth Key length: %d\n", a.length());
 
   strncpy(ocpp_backend, b.c_str(), sizeof(ocpp_backend));
-  strncpy(cp_identifier, i.c_str(), sizeof(cp_identifier));
   strncpy(auth_key, a.c_str(), sizeof(auth_key));
 
   WiFiManager wm;
@@ -177,12 +182,11 @@ void setup()
   wm.setSaveParamsCallback(saveConfigCallback);
   wm.setParamsPage(true);
 
-  WiFiManagerParameter custom_ocpp_backend("backend", "OCPP Backend URL", ocpp_backend, 128);
-  WiFiManagerParameter custom_cp_identifier("identifier", "Charge Point ID", cp_identifier, 64);
-  WiFiManagerParameter custom_auth_key("auth_key", "Auth Key (leave blank if none)", auth_key, 64);
+  // Use autocomplete=off to prevent browsers from autofilling old URLs after a reset
+  WiFiManagerParameter custom_ocpp_backend("backend", "OCPP Backend URL", ocpp_backend, 128, "autocomplete=\"off\"");
+  WiFiManagerParameter custom_auth_key("auth_key", "Auth Key (leave blank if none)", auth_key, 64, "autocomplete=\"off\"");
 
   wm.addParameter(&custom_ocpp_backend);
-  wm.addParameter(&custom_cp_identifier);
   wm.addParameter(&custom_auth_key);
 
   const char *customHeadElement = R"rawliteral(
@@ -326,16 +330,14 @@ void setup()
     </style>
   )rawliteral";
   wm.setCustomHeadElement(customHeadElement);
-  bool autoConnectRet = wm.autoConnect((String("HLCP_") + String(cpSerial).substring(String(cpSerial).length() - 6)).c_str(), cpSerial);
+  bool autoConnectRet = wm.autoConnect(cp_identifier, cpSerial);
 
   if (shouldSaveConfig)
   {
     strncpy(ocpp_backend, custom_ocpp_backend.getValue(), sizeof(ocpp_backend));
-    strncpy(cp_identifier, custom_cp_identifier.getValue(), sizeof(cp_identifier));
     strncpy(auth_key, custom_auth_key.getValue(), sizeof(auth_key));
 
     preferences.putString("backend", ocpp_backend);
-    preferences.putString("identifier", cp_identifier);
     preferences.putString("auth_key", auth_key);
     Serial.println("Saved new OCPP config to Preferences");
   }
@@ -406,18 +408,27 @@ void loop()
       {
         Serial.println("BOOT button held for > 7s! Clearing WiFi and OCPP settings, then restarting...");
 
-        // Clear WiFi
+        // Clear WiFi completely
+        WiFi.disconnect(true, true);
         WiFiManager wm;
         wm.resetSettings();
 
-        // Clear Preferences
+        // Clear Preferences explicitely
         Preferences preferences;
         preferences.begin("ocpp-config", false);
+        preferences.remove("backend");
+        preferences.remove("auth_key");
         preferences.clear();
         preferences.end();
+        Serial.println("NVS ocpp-config cleared.");
 
-        // Give time for serial to print
-        delay(500);
+        // Clear MicroOcpp FS configs (this removes MO's cached URL)
+        auto fs = MicroOcpp::makeDefaultFilesystemAdapter(MicroOcpp::FilesystemOpt::Use_Mount_FormatOnFail);
+        fs->remove(MO_WSCONN_FN);
+        Serial.println("MicroOcpp config cache cleared.");
+
+        // Give time for serial to print and NVS to sync
+        delay(1000);
         ESP.restart();
       }
       else if (held_time >= 3000)