Updated documentation

WEB-SERVER.md

@@ -1,6 +1,13 @@
 ESP-LINK web-server tutorial
 ============================
 
+Installing el-client Arduino library
+--------------------
+
+Download and install ELClient library.
+
+https://github.com/jeelabs/el-client
+
 LED flashing sample
 --------------------
 
@@ -13,17 +20,14 @@ Circuit:
 
 Installation steps:
 
- - 1: install the latest Arduino on the PC
- - 2: install EspLink library from arduino/libraries path
- - 3: open EspLinkWebSimpleLedControl sample from Arduino
- - 4: upload the code onto an Arduino Nano/Uno
- - 5: install esp-link
- - 6: jump to the Web Server page on esp-link UI
- - 7: upload SimpleLED.html ( arduino/libraries/EspLink/examples/EspLinkWebSimpleLedControl/SimpleLED.html )
- - 8: jump to SimpleLED page on esp-link UI
- - 9: turn on/off the LED
-
-Complex application sample
+ - 1: open webserver_led ELClient sample file in Arduino
+ - 2: upload the code onto an Arduino Nano/Uno
+ - 3: open the Web Server page on esp-link UI
+ - 4: upload LED.html from webserver_led ( ELCient/examples/webserver_led/LED.html )
+ - 5: choose LED page on esp-link UI
+ - 6: turn on/off the LED
+
+HTML controls sample
 --------------------------
 
 Circuit:
@@ -31,14 +35,26 @@ Circuit:
  - 1: connect a Nodemcu (ESP8266) board and an Arduino Nano / UNO:
    (RX - levelshifter - TX, TX - levelshifter - RX)
  - 2: optionally connect RESET-s with a level shifter
- - 3: add a trimmer to A0 for Voltage measurement
+ - 3: add a trimmer to A0 for voltage measurement
 
 Installation steps:
 
- - 1: open EspLinkWebApp sample from Arduino
+ - 1: open webserver_controls ELClient sample file in Arduino
  - 2: upload the code onto an Arduino Nano/Uno
- - 3: jump to the Web Server page on esp-link UI
- - 4: upload the 3 HTML files in the samples ( multiple select from  arduino/libraries/EspLink/examples/EspLinkWebApp/ )
+ - 3: open the Web Server page on esp-link UI
+ - 4: upload the 3 HTML files from webserver_controls ( select multiple htmls from  ELCient/examples/webserver_controls/ )
  - 5: jump to LED/User/Voltage pages
  - 6: try out different settings
 
+Supported HTML controls
+--------------------
+
+HTML control       | Value Type  | Description  | Form Submission |
+ ------------------------ | ----- | ------------ | ------- |
+&lt;p id="id"/&gt; <br/> &lt;div id="id"/&gt; <br/> &lt;tr id="id"/&gt; <br/> &lt;th id="id"/&gt; <br/> &lt;td id="id"/&gt; <br/> &lt;textarea id="id"/&gt; | String&nbsp;(HTML) | MCU can replace the inner HTML part of the control at LOAD/REFRESH queries. The string (sent by MCU) is handled as HTML, so &lt;img...&gt; will be displayed as an image on the page | NO |
+&lt;button id="id"/&gt; | String | When button is pressed, a message is transmitted to MCU containing the id (BUTTON_PRESS) | NO |
+&lt;input name="id"/&gt; | String <br/> Integer <br/> Float <br/> Boolean | MCU can replace the value or checked properties of the HTML control in the form (LOAD/REFRESH). At form submission, the content of value will be transmitted to MCU (SET_FIELD). | YES |
+&lt;select name="id"/&gt; | String | MCU can choose a value from the drop down (LOAD/REFRESH). At form submission the currently selected value will be transmitted to MCU (SET_FIELD) | YES |
+&lt;ul id="id"/&gt; <br/> &lt;ol id="id"/&gt; | JSON list <br/> ["1","2","3"] | MCU can send a JSON list which is transformed to an HTML list ( &lt;li/&gt; )  (LOAD/REFRESH) | NO |
+&lt;table id="id"/&gt; | JSON table <br/> [["1","2"], <br/> ["3","4"]] | MCU sends a JSON table which is transformed to an HTML table  (LOAD/REFRESH) | NO |
+