21 access point dropdown

noisemeter-device/access-point-html.cpp

@@ -19,6 +19,7 @@ font-size: 24px;
 padding: 5px;
 margin-top: 3px;
 }
+select, input{margin-bottom: 1em;min-width: 150px;}
 .meter { 
     height: 5px;
     position: relative;
@@ -72,7 +73,25 @@ const char *HTML_FOOTER = R"html(
 </html>
 )html";
 
-const char *HTML_BODY_FORM = R"html(
+const char *HTML_BODY_FORM_HEADER = R"html(
+    <p>Select your home WiFi network below and enter its password to get the sensor online:<br><br></p>
+    <form method='POST' action='/submit' enctype='multipart/form-data'>
+      <label for='ssid'>Wifi network name:</label><br>
+      <select name='ssid' id='ssid' required>
+)html";
+
+const char *HTML_BODY_FORM_FOOTER = R"html(
+      </select>
+      <p style="font-size: 0.75em">(&#x1f512; = password required)<br>(Don't see your network? <a href="/manual">Enter it manually</a>)</p>
+      <br><label for='psk'>Wifi network password:</label><br>
+      <input type='password' name='psk' id='psk'/><br>
+      <label for='email'>Your Email (also your username for logging into the tRacket portal):</label><br>
+      <input type='email' name='email' id='email'/><br>
+      <p><input type='submit' value='Connect'/></p>
+    </form>
+)html";
+
+const char *HTML_BODY_FORM_MANUAL = R"html(
 <p>Enter the wifi network name and password for your home network, which the sensor can connect to to get online:<br/><br/></p>
     <form method='POST' action='/submit' enctype='multipart/form-data'>
       <p>Wifi network name:</p>

noisemeter-device/access-point-html.hpp

@@ -1,5 +1,6 @@
 extern const char *HTML_HEADER;
 extern const char *HTML_CONTAINER;
 extern const char *HTML_FOOTER;
-extern const char *HTML_BODY_FORM;
-
+extern const char *HTML_BODY_FORM_HEADER;
+extern const char *HTML_BODY_FORM_FOOTER;
+extern const char *HTML_BODY_FORM_MANUAL;

noisemeter-device/access-point.cpp

@@ -27,6 +27,8 @@ constexpr auto ACCESS_POINT_TIMEOUT_SEC = MIN_TO_SEC(30);
 const IPAddress AccessPoint::IP (8, 8, 4, 4);
 const IPAddress AccessPoint::Netmask (255, 255, 255, 0);
 
+static int networkScanCount = 0;
+
 AccessPoint::AccessPoint(SubmissionHandler func):
     timeout(ACCESS_POINT_TIMEOUT_SEC),
     server(80),
@@ -50,6 +52,8 @@ String AccessPoint::htmlFromMsg(const char *msg, const char *extra)
 
 void AccessPoint::run()
 {
+    networkScanCount = WiFi.scanNetworks();
+
     WiFi.mode(WIFI_AP);
     WiFi.softAPConfig(IP, IP, Netmask);
     WiFi.softAP(SSID, Passkey);
@@ -157,9 +161,32 @@ bool AccessPoint::handle(WebServer& server, HTTPMethod method, String uri)
             response.reserve(2048);
             response += HTML_HEADER;
             response += HTML_CONTAINER;
-            response += HTML_BODY_FORM;
+            response += HTML_BODY_FORM_HEADER;
+
+            for (int i = 0; i < networkScanCount; ++i) {
+                const auto ssid = WiFi.SSID(i);
+
+                response += "<option value=\"";
+                response += ssid;
+                response += "\">";
+                response += ssid;
+                if (WiFi.encryptionType(i) != WIFI_AUTH_OPEN)
+                    response += " &#x1f512;";
+                response += "</option>";
+            }
+
+            response += HTML_BODY_FORM_FOOTER;
             response += HTML_FOOTER;
 
+            timeout = DAY_TO_SEC(30);
+            server.send_P(200, PSTR("text/html"), response.c_str());
+        } else if (uri == "/manual") {
+            String response;
+            response.reserve(2048);
+            response += HTML_HEADER;
+            response += HTML_CONTAINER;
+            response += HTML_BODY_FORM_MANUAL;
+            response += HTML_FOOTER;
             timeout = DAY_TO_SEC(30);
             server.send_P(200, PSTR("text/html"), response.c_str());
         } else if (uri == "/connecttest.txt") {

platformio.ini

@@ -26,7 +26,7 @@ build_unflags =
 build_flags = 
 	-std=gnu++17
 	-DNO_GLOBAL_EEPROM
-	-DNOISEMETER_VERSION=\"0.2.2\"
+        -DNOISEMETER_VERSION=\"0.2.3\"
 	-Wall -Wextra
 
 # Optional build flags: