Bohyun Bang / w7500-paho-mqtt

Paho MQTT Client example with W7500

Dependencies:   DHT MQTTforLecture WIZnetInterface mbed-src

Fork of w7500-paho-mqtt by Bohyun Bang

Code

WIZwiki W7500 with paho mqtt client.

Import programw7500-paho-mqtt

Paho MQTT Client example with W7500

Last commit 21 Sep 2015 by Bohyun Bang

You have to change

You have to use your ethernet(network) information.

MQTTEthernet.h

    uint8_t mac_addr[6] = {0x00, 0x08, 0xDC, 0x00, 0x00, 0x00}; // your mac address
    const char * ip_addr = "???.???.???.???"; // your ip
    const char * gw_addr = "???.???.???.???"; // your gateway
    const char * snmask = "???.???.???.???"; // your subnetmask

And you have to use your mqtt broker server information. Broker server ip address and port number listed bleow are available now. But I will close the mqtt broker server on July 15,2015.

main.cpp

    char* hostname = "104.199.146.45";
    int port = 1883;

Platform

WIZwiki W7500 [ https://developer.mbed.org/platforms/WIZwiki-W7500/ ] /media/uploads/bangbh/wizwiki-w7500.jpg

Component

YWRobot Easy module shield [ where to buy ] (This is not mbed component) /media/uploads/bangbh/ywrobot_esay-module-shield-v1.jpg

Test software

PC

MQTT-FX - A JavaFX based MQTT Client [ Home page ] /media/uploads/bangbh/mqtt-fx.png

Mobile(iPhone)

ZMQTT-UTILITY - MQTT Test utility|You can download from App store(iPhone). /media/uploads/bangbh/iphone-zmqtt-utility.png

Diff: main.cpp

Revision:
7:a5ead1402704
Parent:
3:36fd3cfad85a
Child:
8:f837e0d255e8
--- a/main.cpp	Tue Jun 04 16:07:06 2013 +0100
+++ b/main.cpp	Mon May 04 22:47:02 2015 +0000
@@ -7,7 +7,7 @@
     EthernetInterface eth;
     eth.init(); //Use DHCP
     eth.connect();
-    printf("IP Address is %s\n", eth.getIPAddress());
+    printf("\nServer IP Address is %s\n", eth.getIPAddress());
     
     TCPSocketServer server;
     server.bind(ECHO_SERVER_PORT);
@@ -25,6 +25,22 @@
             int n = client.receive(buffer, sizeof(buffer));
             if (n <= 0) break;
             
+            // print received message to terminal
+            buffer[n] = '\0';
+            printf("Received message from Client :'%s'\n",buffer);
+            
+            // reverse the message
+            char temp;
+            for(int f = 0, l = n-1; f<l; f++,l--){
+                temp = buffer[f];
+                buffer[f] = buffer[l];
+                buffer[l] = temp;
+                }
+            
+            // print reversed message to terminal
+            printf("Sending message to Client: '%s'\n",buffer);
+            
+            // Echo received message back to client
             client.send_all(buffer, n);
             if (n <= 0) break;
         }