Toggle LCDlock using o and > buttons at powerup

SmartEVSE-3/.gitignore

@@ -1,5 +1,3 @@
 .pio
-.vscode/.browse.c_cpp.db*
-.vscode/c_cpp_properties.json
-.vscode/launch.json
-.vscode/ipch
+.vscode
+packed_fs.c

SmartEVSE-3/data/index.html

@@ -42,7 +42,7 @@
 
               let minCurrent=parseInt(data.settings.current_min.toFixed(1));
               let maxCurrent=parseInt(data.settings.current_max.toFixed(1));
-              let lcdlock=parseInt(data.settings.LCDlock);
+              let lcdlock=parseInt(data.settings.lcdlock);
               if (lcdlock)
                 document.getElementById("lcdlock").checked = true;
 
@@ -912,7 +912,7 @@ <h1 id="serialnr" class="h5 mb-0 text-white-800">SmartEVSE-</h1>
                     }
                     function toggleLCDlock() {
                       var LCDlockCheckbox = document.getElementById("lcdlock");
-                      $.post( "/settings?LCDlock=" + (LCDlockCheckbox.checked == true ? 1 : 0));
+                      $.post( "/settings?lcdlock=" + (LCDlockCheckbox.checked == true ? 1 : 0));
                     }
                     function toggleEnableOcpp() {
                       var enableOcppCheckbox = document.getElementById("enable_ocpp");
@@ -1057,10 +1057,11 @@ <h1 id="serialnr" class="h5 mb-0 text-white-800">SmartEVSE-</h1>
                                           <button onclick="update()" style="width: 100px; display:inline-block;" title="Update your firmware">Update</button>
                                           <button onclick="rawData()" style="width: 120px; display:inline-block;" title="Display your settings in JSON format">Raw Data</button>
                                         </div>
-                                        <div class="col">
+<!--                                        <div class="col">
                                           <label for="lcdlock" style="width: 140px; display:inline-block;" title="Lock buttons on LCD screen">LCD Lock</label>
                                           <input type="checkbox" id="lcdlock" value="lcdlock" onclick="toggleLCDlock()">
                                         </div>
+-->                                        
                                     </div>
                                     <div class="row no-gutters align-items-center with_modem">
                                         <div class="col-auto h5 mb-0 mr-3 font-weight-bold text-gray-800" style="width: 120px;">

SmartEVSE-3/include/main.h

@@ -179,6 +179,7 @@
 #define OCPP_MODE 0
 #define AUTOUPDATE 0                                                            // default for Automatic Firmware Update: 0 = disabled, 1 = enabled
 #define SB2_WIFI_MODE 0
+#define LCD_LOCK 0                                                              // 0 = LCD buttons operational, 1 = LCD buttons disabled
 
 // Mode settings
 #define MODE_NORMAL 0

SmartEVSE-3/src/main.cpp

@@ -189,7 +189,7 @@ uint16_t ImportCurrent = IMPORT_CURRENT;
 struct DelayedTimeStruct DelayedStartTime;
 struct DelayedTimeStruct DelayedStopTime;
 uint8_t DelayedRepeat;                                                      // 0 = no repeat, 1 = daily repeat
-bool LCDlock = false;                                                       // Lock buttons on LCD display if true
+uint8_t LCDlock = LCD_LOCK;                                                 // 0 = LCD buttons operational, 1 = LCD buttons disabled
 uint8_t Grid = GRID;                                                        // Type of Grid connected to Sensorbox (0:4Wire / 1:3Wire )
 uint8_t SB2_WIFImode = SB2_WIFI_MODE;                                       // Sensorbox-2 WiFi Mode (0:Disabled / 1:Enabled / 2:Start Portal)
 uint8_t RFIDReader = RFID_READER;                                           // RFID Reader (0:Disabled / 1:Enabled / 2:Enable One / 3:Learn / 4:Delete / 5:Delete All / 6: Remote via OCPP)
@@ -3923,7 +3923,7 @@ void read_settings() {
         DelayedStartTime.epoch2 = preferences.getULong("DelayedStartTim", DELAYEDSTARTTIME); //epoch2 is 4 bytes long on arduino; NVS key has reached max size
         DelayedStopTime.epoch2 = preferences.getULong("DelayedStopTime", DELAYEDSTOPTIME);    //epoch2 is 4 bytes long on arduino
         DelayedRepeat = preferences.getUShort("DelayedRepeat", 0);
-        LCDlock = preferences.getUShort("LCDlock", 0);
+        LCDlock = preferences.getUChar("LCDlock", LCD_LOCK);
         TZinfo = preferences.getString("TimezoneInfo","");
         if (TZinfo != "") {
             setenv("TZ",TZinfo.c_str(),1);
@@ -3997,6 +3997,7 @@ void write_settings(void) {
     preferences.putString("RequiredEVCCID", String(RequiredEVCCID));
     preferences.putUShort("maxTemp", maxTemp);
     preferences.putUChar("AutoUpdate", AutoUpdate);
+    preferences.putUChar("LCDlock", LCDlock);
 
 #if ENABLE_OCPP
     preferences.putUChar("OcppMode", OcppMode);
@@ -4149,7 +4150,7 @@ bool handle_URI(struct mg_connection *c, struct mg_http_message *hm,  webServerR
         doc["settings"]["starttime"] = (DelayedStartTime.epoch2 ? DelayedStartTime.epoch2 + EPOCH2_OFFSET : 0);
         doc["settings"]["stoptime"] = (DelayedStopTime.epoch2 ? DelayedStopTime.epoch2 + EPOCH2_OFFSET : 0);
         doc["settings"]["repeat"] = DelayedRepeat;
-        doc["settings"]["LCDlock"] = LCDlock;
+        doc["settings"]["lcdlock"] = LCDlock;
 #if MODEM
             doc["settings"]["required_evccid"] = RequiredEVCCID;
             doc["settings"]["modem"] = "Experiment";
@@ -4466,15 +4467,12 @@ bool handle_URI(struct mg_connection *c, struct mg_http_message *hm,  webServerR
             }
         }
 
-        if(request->hasParam("LCDlock")) {
-            int lock = request->getParam("LCDlock")->value().toInt();
+        if(request->hasParam("lcdlock")) {
+            int lock = request->getParam("lcdlock")->value().toInt();
             if (lock >= 0 && lock <= 1) {                                   //boundary check
                 LCDlock = lock;
-                doc["LCDlock"] = lock;
-                if (preferences.begin("settings", false) ) {
-                    preferences.putUShort("LCDlock", LCDlock);
-                    preferences.end();
-                }
+                doc["lcdlock"] = lock;
+                write_settings();
             }
         }
 
@@ -5530,6 +5528,18 @@ void setup() {
     read_settings();                                                            // initialize with default data when starting for the first time
     validate_settings();
     ReadRFIDlist();                                                             // Read all stored RFID's from storage
+
+    // Sample middle+right button, and lock/unlock LCD buttons.
+    pinMatrixOutDetach(PIN_LCD_SDO_B3, false, false);                           // disconnect MOSI pin
+    pinMode(PIN_LCD_SDO_B3, INPUT);
+    pinMode(PIN_LCD_A0_B2, INPUT);
+    if ((digitalRead(PIN_LCD_A0_B2) == 0) && (digitalRead(PIN_LCD_SDO_B3) == 0)) {
+        LCDlock = !LCDlock;
+        write_settings();
+    }    
+    pinMode(PIN_LCD_SDO_B3, OUTPUT);
+    pinMatrixOutAttach(PIN_LCD_SDO_B3, VSPID_IN_IDX, false, false);             // re-attach MOSI pin
+    pinMode(PIN_LCD_A0_B2, OUTPUT);
 
     // Create Task EVSEStates, that handles changes in the CP signal
     xTaskCreate(