allow to set system name, auto shutdown AP, usb baud

lib/config/GWConfig.cpp

@@ -31,7 +31,7 @@ String GwConfigHandler::toString() const{
 
 String GwConfigHandler::toJson() const{
     String rt;
-    DynamicJsonDocument jdoc(300);
+    DynamicJsonDocument jdoc(400);
     for (int i=0;i<getNumConfig();i++){
         jdoc[configs[i]->getName()]=configs[i]->asCString();
     }
@@ -58,7 +58,6 @@ GwConfigHandler::GwConfigHandler(GwLog *logger){
     this->logger=logger;
 }
 bool GwConfigHandler::loadConfig(){
-    logger->logString("config load");
     prefs.begin(PREF_NAME,true);
     for (int i=0;i<getNumConfig();i++){
         String v=prefs.getString(configs[i]->getName().c_str(),configs[i]->getDefault());

lib/config/GWConfig.h

@@ -67,6 +67,9 @@ class GwConfigHandler{
         const String maxClients=F("maxClients");
         const String sendTCP=F("sendTCP");
         const String sendSeasmart=F("sendSeasmart");
+        const String usbBaud=F("usbBaud");
+        const String systemName=F("systemName");
+        const String stopApTime=F("stopApTime");
         GwConfigHandler(GwLog *logger);
         bool loadConfig();
         bool saveConfig();
@@ -81,7 +84,7 @@ class GwConfigHandler{
         GwConfigItem * findConfig(const String name, bool dummy=false);
         GwConfigInterface * getConfigItem(const String name, bool dummy=false) const;
     private:
-    GwConfigItem* configs[9]={
+    GwConfigItem* configs[12]={
         new GwConfigItem(sendUsb,"true"),
         new GwConfigItem (receiveUsb,"false"),
         new GwConfigItem (wifiClient,"false"),
@@ -90,10 +93,13 @@ class GwConfigHandler{
         new GwConfigItem (serverPort,"2222"),
         new GwConfigItem (maxClients, "10"),
         new GwConfigItem (sendTCP,"true"),
-        new GwConfigItem (sendSeasmart,"false")
+        new GwConfigItem (sendSeasmart,"false"),
+        new GwConfigItem (usbBaud,"115200"),
+        new GwConfigItem (systemName,"ESP32NMEA2K"),
+        new GwConfigItem (stopApTime,"0")
     };  
     int getNumConfig() const{
-        return 9;
+        return 12;
     }  
 };
 #endif

lib/wifi/GWWifi.h

@@ -11,11 +11,15 @@ class GwWifi{
         const GwConfigInterface *wifiPass;
         bool connectInternal();
         long lastConnectStart=0;
+        unsigned long lastApAccess=0;
+        unsigned long apShutdownTime=0;
+        bool apActive=false;
     public:
         GwWifi(const GwConfigHandler *config,GwLog *log);
         void setup();
         void loop();
         bool clientConnected();
         bool connectClient();
+        String apIP();
 };
 #endif

lib/wifi/GwWifi.cpp

@@ -1,8 +1,6 @@
 #include "GWWifi.h"
 
-
-const char *AP_ssid = "ESP32NMEA2K";  // ESP32 as AP
-const char *AP_password = "esp32nmea2k"; //too short - so no pass
+const char *AP_password = "esp32nmea2k"; 
 
 GwWifi::GwWifi(const GwConfigHandler *config,GwLog *log){
     this->config=config;
@@ -18,13 +16,20 @@ void GwWifi::setup(){
     IPAddress AP_gateway(192, 168, 15, 1);
     IPAddress AP_subnet(255, 255, 255, 0);
     WiFi.mode(WIFI_MODE_APSTA); //enable both AP and client
-    WiFi.softAP(AP_ssid,AP_password);
+    const char *ssid=config->getConfigItem(config->systemName)->asCString();
+    WiFi.softAP(ssid,AP_password);
     delay(100);
     WiFi.softAPConfig(AP_local_ip, AP_gateway, AP_subnet);
     logger->logString("WifiAP created: ssid=%s,adress=%s",
-        AP_ssid,
+        ssid,
         WiFi.softAPIP().toString().c_str()
         );
+    apActive=true;   
+    lastApAccess=millis();
+    apShutdownTime=config->getConfigItem(config->stopApTime)->asInt() * 60;
+    if (apShutdownTime < 120 && apShutdownTime != 0) apShutdownTime=120; //min 2 minutes
+    logger->logString("GWWIFI: AP auto shutdown %s (%ds)",apShutdownTime> 0?"enabled":"disabled",apShutdownTime);
+    apShutdownTime=apShutdownTime*1000; //ms   
     connectInternal();    
 }
 bool GwWifi::connectInternal(){
@@ -46,6 +51,16 @@ void GwWifi::loop(){
             connectInternal();
         }
     }
+    if (apShutdownTime != 0 && apActive){
+        if (WiFi.softAPgetStationNum()){
+            lastApAccess=millis();
+        }
+        if ((lastApAccess + apShutdownTime) < millis()){
+            logger->logString("GWWIFI: shutdown AP");
+            WiFi.softAPdisconnect(true);
+            apActive=false;
+        }
+    }
 }
 bool GwWifi::clientConnected(){
     return WiFi.status() == WL_CONNECTED;
@@ -53,4 +68,9 @@ bool GwWifi::clientConnected(){
 bool GwWifi::connectClient(){
     WiFi.disconnect();
     return connectInternal();
+}
+
+String GwWifi::apIP(){
+    if (! apActive) return String();
+    return WiFi.softAPIP().toString();
 }