move wifi stuff to separate module, implement WifiManager for AP configuration

10_wifi_conf.ino

@@ -1,11 +1,60 @@
-// Future use
+/* 
+ *  Wifi and OTA related stuff
+ */
 
-wifi_setup() {
-  
+#include <time.h>
+#include <ESP8266WiFi.h>
+#include <WiFiClientSecure.h>
+#include <WiFiManager.h>
+#include <ESP8266httpUpdate.h>
+
+WiFiManager WifiManager;
+WiFiClientSecure net;
+
+//BearSSL::WiFiClientSecure net;
+
+//
+// If the WifiManager configuration portal is called, we can do stuff
+//
+//void WifiManagerCallback(WiFiManager *myWiFiManager) {
+//  PRINTLN_SERIAL("Entered AP config mode");  
+//}
+
+void wifi_associate() {
+  WifiManager.setConfigPortalTimeout(300); // If no configuration is done in 5 mins, exit/restart quietly  
+  if (WifiManager.autoConnect(nodename)) { // @@@FIXME@@@ we should really set a PSK for the AP (but in my brief testing it crashed the ESP, so what's up with that)
+    PRINTLN_SERIAL("Wifi connected");  
+
+    //wificlient.setFingerprint(WTR_SHA1);
+    net.setInsecure();    // Do not check fingerprint
+    net.setTimeout(15000); // 15 Seconds  
+
+    PRINT_SERIAL("Setting time using SNTP");
+    configTime(-5 * 3600, 0, "pool.ntp.org", "time.nist.gov");
+    now = time(nullptr);
+    while (now < 1510592825) {
+      delay(500);
+      APPEND_SERIAL(".");
+      now = time(nullptr);
+    }
+    APPENDLN_SERIAL(" done!");
+    struct tm timeinfo;
+    gmtime_r(&now, &timeinfo);
+    PRINT_SERIAL("Current time: ");
+    APPENDLN_SERIAL(asctime(&timeinfo));
+  }
 }
 
-wifi_loop() {
-  
+void wifi_setup() {
+//  WifiManager.setAPCallback(WifiManagerCallback); // Enable WifiManager callback to clear the cache
+  wifi_associate();
+}
+
+void wifi_loop() {
+  if(WiFi.status() != WL_CONNECTED) {
+    PRINTLN_SERIAL("Wifi disconnected, trying to reconnect");
+    wifi_associate();
+  }
 }
 /*
     // Check for firmware upgrades