initial commit with all the stuff

3B/app/mqtt.lua

@@ -0,0 +1,66 @@
+MQTT	  		= 	require("mosquitto")
+mqtt 	  		= 	MQTT.new()
+
+local function errLog(msg)
+	io.stderr:write(msg)
+end
+
+local connected = false
+local broker	= "localhost" 
+
+local onMessage	= nil
+local onConnect = nil
+
+local function publish(topic,msg,retain)
+    retain = retain or false
+	mqtt:publish(topic,msg, qos, retain)
+end
+
+local function loop()
+	local ok,err,msg
+
+	if connected then
+		ok,err,msg = mqtt:loop(0)
+		if not ok then
+			errLog("MQTT:\t "..msg.."\n")
+			if onError then onError(1) end
+			connected = false
+		end 
+	else		
+		ok,err,msg = mqtt:loop(0)
+		if not ok then
+			if onError then onError(2) end
+			errLog("MQTT:\t "..msg.."\n")
+			mqtt:connect(broker,1883,5)
+			errLog("MQTT:\t Reconnect".."\n")
+		end 
+	end
+end
+
+local function subscribe(msg)
+	mqtt:subscribe(msg)
+end
+
+mqtt.ON_CONNECT = function()
+	connected = true
+	if onConnect then onConnect() end
+end
+
+mqtt.ON_MESSAGE = function(mid, topic, payload)
+	if onMessage then onMessage(mid, topic, payload) end
+end
+
+local function begin(hostname) 
+	broker = hostname
+	mqtt:connect(broker,1883,5)
+end
+
+return {
+	begin			=	begin;
+	loop			=	loop;
+	publish			=	publish;
+	subscribe		=   subscribe;
+	onConnect		=	function(callback) onConnect = callback end;	
+	onMessage		=	function(callback) onMessage = callback end;
+	onError		    =	function(callback) onError   = callback end;	
+}