Value picker

hobu_value_picker/app.js

@@ -0,0 +1,112 @@
+var Tinkerforge = require('../Tinkerforge')
+,   Conf        = require('./config.json')
+,   Helper      = require('../Adawim/helper')
+,   Log         = require('../Adawim/logging')
+,   http        = require('http');
+
+
+Helper.each(Conf.items, function(item) {
+  connect(item);
+});
+
+
+/* private */
+function reconnect(item) {
+  Log.debug('Reconnect ' + item.host);
+  setTimeout(connect(item), 10000);
+}
+
+/* private */
+function connect(item) {
+  var HOST = item.host;
+  var PORT = item.port;
+  var UID = item.uid;
+
+  Log.log('Init ' + UID + ' @' + HOST + ' with period of ' + item.callback.period);
+  
+  var ipcon = new Tinkerforge.IPConnection(); // Create IP connection
+  var t = new Tinkerforge.BrickletTemperature(UID, ipcon); // Create device object
+  
+  var counter = 0;
+  var readyForNextNotification = true;
+  
+  ipcon.connect(HOST, PORT,
+    function (error) {
+    
+      /*
+        IPConnection.ERROR_ALREADY_CONNECTED = 11
+        IPConnection.ERROR_NOT_CONNECTED = 12
+        IPConnection.ERROR_CONNECT_FAILED = 13
+        IPConnection.ERROR_INVALID_FUNCTION_ID = 21
+        IPConnection.ERROR_TIMEOUT = 31
+        IPConnection.ERROR_INVALID_PARAMETER = 41
+        IPConnection.ERROR_FUNCTION_NOT_SUPPORTED = 42
+        IPConnection.ERROR_UNKNOWN_ERROR = 43
+      */
+
+      Log.error('Error @'+HOST+': ' + error);
+      
+      if(error === 13) {
+        reconnect(item);
+      }
+    }
+  ); // Connect to brickd
+  // Don't use device before ipcon is connected
+  
+  ipcon.on(Tinkerforge.IPConnection.CALLBACK_CONNECTED,
+    function (connectReason) {
+      t.setTemperatureCallbackPeriod(item.callback.period);
+    }
+  );
+
+  // Register temperature callback
+  t.on(Tinkerforge.BrickletTemperature.CALLBACK_TEMPERATURE,
+    // Callback function for temperature callback (parameter has unit °C/100)
+    function (temperature) {
+      saveValue(temperature/100.0, item);
+      Log.log('Temperature: ' + temperature/100.0 + ' °C');
+    }
+  );
+  
+  process.on( 'SIGINT', function() {
+    Log.log( "Gracefully disconnect " + HOST );
+    ipcon.disconnect();
+    process.exit( );
+  });
+}
+
+/* private */
+function saveValue(value, item) {
+  var room = item.on.new.value.room;
+  var category = item.on.new.value.category;
+
+  var options = {
+    host: item.on.new.value.host,
+    port: item.on.new.value.port,
+    path: '/persist/value/of/'+category+'/with/'+value+'/in/'+room+'/'
+  };
+
+  callback = function(response) {
+    var str = '';
+
+    //another chunk of data has been recieved, so append it to `str`
+    response.on('data', function (chunk) {
+      str += chunk;
+    });
+
+    //the whole response has been recieved, so we just print it out here
+    response.on('end', function () {
+      Log.log(str);
+    });
+  }
+
+  var req = http.request(options, function(res) {
+    //Log.inspect('Result', res);
+  });
+  
+  req.on('error', function(err) {
+    Log.error(err);
+  });
+  
+  req.end();
+}

hobu_value_picker/config.json

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+{
+  "items": [
+    {
+    	"host": "192.168.2.126",
+    	"port": 4223,
+    	"uid": "8j1",
+    	"callback": {
+      	"period": 6000
+    	},
+    	"on": {
+      	"new": {
+        	"value": {
+        	  "type": "web",
+          	"host": "hobu",
+          	"port": "2999",
+          	"category": "TEMPERATURE",
+          	"room": 1
+        	}
+      	}
+    	}
+    }
+  ]
+}