Malloc large arrays to free RAM.

Move large arrays to reduce RAM footprint. This allowed WiFi casting to work when all subsystems are compiled.
Fix WiFi subnet

Author: nseidle

Firmware/RTK_Surveyor/Form.ino

@@ -33,8 +33,10 @@ void startWebServer()
   ntripClientStop(true);
   wifiStartAP();
 
+  incomingSettings = (char*)malloc(AP_CONFIG_SETTING_SIZE);
+
   //Clear any garbage from settings array
-  memset(incomingSettings, 0, sizeof(incomingSettings));
+  memset(incomingSettings, 0, AP_CONFIG_SETTING_SIZE);
 
   ws.onEvent(onWsEvent);
   server.addHandler(&ws);

Firmware/RTK_Surveyor/RTK_Surveyor.ino

@@ -26,7 +26,7 @@ const int FIRMWARE_VERSION_MAJOR = 2;
 const int FIRMWARE_VERSION_MINOR = 4;
 
 #define COMPILE_WIFI //Comment out to remove WiFi functionality
-//#define COMPILE_AP //Requires WiFi. Comment out to remove Access Point functionality
+#define COMPILE_AP //Requires WiFi. Comment out to remove Access Point functionality
 #define COMPILE_ESPNOW //Requires WiFi. Comment out to remove ESP-Now functionality.
 #define COMPILE_BT //Comment out to remove Bluetooth functionality
 #define COMPILE_L_BAND //Comment out to remove L-Band functionality
@@ -159,8 +159,8 @@ LoggingType loggingType = LOGGING_UNKNOWN;
 
 #endif
 
-char certificateContents[2000]; //Holds the contents of the keys prior to MQTT connection
-char keyContents[2000];
+char *certificateContents; //Holds the contents of the keys prior to MQTT connection
+char *keyContents;
 //=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
 
 //GNSS configuration
@@ -328,7 +328,7 @@ AsyncWebSocket ws("/ws");
 //Because the incoming string is longer than max len, there are multiple callbacks so we
 //use a global to combine the incoming
 #define AP_CONFIG_SETTING_SIZE 5000
-char incomingSettings[AP_CONFIG_SETTING_SIZE];
+char *incomingSettings;
 int incomingSettingsSpot = 0;
 unsigned long timeSinceLastIncomingSetting = 0;
 //=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

Firmware/RTK_Surveyor/States.ino

@@ -622,7 +622,7 @@ void updateSystemState()
 
               //Clear buffer
               incomingSettingsSpot = 0;
-              memset(incomingSettings, 0, sizeof(incomingSettings));
+              memset(incomingSettings, 0, AP_CONFIG_SETTING_SIZE);
             }
           }
         }

Firmware/RTK_Surveyor/WiFi.ino

@@ -167,12 +167,12 @@ void wifiStartAP()
 
 #ifdef COMPILE_ESPNOW
   // Return protocol to default settings (no WIFI_PROTOCOL_LR for ESP NOW)
-  esp_wifi_set_protocol(WIFI_IF_STA, WIFI_PROTOCOL_11B | WIFI_PROTOCOL_11G | WIFI_PROTOCOL_11N);
+  esp_wifi_set_protocol(WIFI_IF_AP, WIFI_PROTOCOL_11B | WIFI_PROTOCOL_11G | WIFI_PROTOCOL_11N);
 #endif
 
   IPAddress local_IP(192, 168, 4, 1);
   IPAddress gateway(192, 168, 1, 1);
-  IPAddress subnet(255, 255, 0, 0);
+  IPAddress subnet(255, 255, 255, 0);
 
   WiFi.softAPConfig(local_IP, gateway, subnet);
   if (WiFi.softAP("RTK Config") == false) //Must be short enough to fit OLED Width