Skeleton for the web-server page

esp-link/cgi.c

@@ -213,7 +213,8 @@ int ICACHE_FLASH_ATTR cgiMenu(HttpdConnData *connData) {
 #ifdef MQTT
         "\"REST/MQTT\", \"/mqtt.html\", "
 #endif
-        "\"Debug log\", \"/log.html\""
+        "\"Debug log\", \"/log.html\", "
+        "\"Web Server\", \"/web-server.html\""
       " ], "
       "\"version\": \"%s\", "
       "\"name\": \"%s\""

esp-link/cgiservices.c

@@ -68,6 +68,7 @@ int ICACHE_FLASH_ATTR cgiSystemInfo(HttpdConnData *connData) {
       "\"name\": \"%s\", "
       "\"reset cause\": \"%d=%s\", "
       "\"size\": \"%s\", "
+      "\"upload-size\": \"%d\", "
       "\"id\": \"0x%02X 0x%04X\", "
       "\"partition\": \"%s\", "
       "\"slip\": \"%s\", "
@@ -79,6 +80,7 @@ int ICACHE_FLASH_ATTR cgiSystemInfo(HttpdConnData *connData) {
     rst_info->reason,
     rst_codes[rst_info->reason],
     flash_maps[system_get_flash_size_map()],
+    getUserPageSectionEnd()-getUserPageSectionStart(),
     fid & 0xff, (fid & 0xff00) | ((fid >> 16) & 0xff),
     part_id ? "user2.bin" : "user1.bin",
     flashConfig.slip_enable ? "enabled" : "disabled",

html/home.html

@@ -123,6 +123,12 @@
                 <div class="popup pop-left">Size configured into bootloader, must match chip size</div>
               </div>
             </td></tr>
+            <tr><td>Webpage size</td><td>
+              <div>
+                <span class="system-upload-size"></span>
+                <div class="popup pop-left">The maximal size of the custom web page a user can upload.</div>
+              </div>
+            </td></tr>
             <tr><td>Current partition</td><td class="system-partition"></td></tr>
             <tr><td colspan=2 class="popup-target">Description:<br>
                 <div class="click-to-edit system-description">

html/web-server.html

@@ -0,0 +1,12 @@
+  <div id="main">
+    <div class="header">
+      <h1>Web Server</h1>
+    </div>
+
+    <div class="content">
+     <p>User defined web pages can be uploaded to esp-link. This is useful if esp-link acts as a web server while MCU provides
+       the measurement data.</p>
+    </div>
+
+  </div>
+