mraa-gpio-ain: add iot2050 board

Add IOT2050 board in list of possible boards.

Signed-off-by: zengchao <chao.zeng@siemens.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Ivan Mikhaylov <ivan.mikhaylov@siemens.com>

hardware/intel/mraa-gpio-ain.html

@@ -1,7 +1,7 @@
 
 <script type="text/javascript">
     RED.nodes.registerType('mraa-gpio-ain',{
-        category: 'Intel gpio',
+        category: 'GPIO',
         color: '#a6bbcf',
         paletteLabel: 'analogue',
         defaults: {
@@ -27,6 +27,7 @@
                 if (data === 5) { t = "Raspberry Pi"; }
                 if (data === 6) { t = "Beaglebone"; }
                 if (data === 7) { t = "Banana"; }
+                if (data === 25) { t = "IOT2050"; }
                 $('#btype').text(t);
                 $('#node-input-pin').val(pinnow);
             });
@@ -62,7 +63,7 @@
 </script>
 
 <script type="text/x-red" data-help-name="mraa-gpio-ain">
-    <p>An analogue input pin for an Intel Galileo or Edison board that is read every <i>interval</i> milliseconds.</p>
+    <p>An analogue input pin for a board that is read every <i>interval</i> milliseconds.</p>
     <p>The <code>msg.payload</code> will contain the value, and <code>msg.topic</code>
     contains "{the_board_name}/A{the pin number}".</p>
     <p>The value is only sent if it is different from the previously read value.</p>

hardware/intel/mraa-gpio-ain.js

@@ -11,6 +11,10 @@ module.exports = function(RED) {
         var node = this;
         var msg = { topic:node.board+"/A"+node.pin };
         var old = -99999;
+        // ADC set to 12 for IOT2050
+        if (this.board === "SIMATIC IOT2050") {
+            node.x.setBit(12);
+        }
         this.timer = setInterval(function() {
             msg.payload = node.x.read();
             if (msg.payload !== old) {