Hill Kim / Mbed 2 deprecated IBMIoTClientEthernetExample_W5200

MQTT demo program for Nucleo F401RE and Seeedstudio W5200 Ethernet Shield which is based on Wiznet IBMIoTClientEthernetExample_W5500.

Dependencies:   MQTT W5200Interface mbed DHT11

Fork of IBMIoTClientEthernetExample_W5500 by W5500-Ethernet-Interface Makers

I post description regarding this source code here.

http://developer.mbed.org/users/hillkim7/notebook/ibmiotclientethernetexample_w5200/

Files at this revision

API Documentation at this revision

Revision 4:0c9bdee36e2a, committed 2014-12-26

Comitter:
hillkim7
Date:
Fri Dec 26 07:54:23 2014 +0000
Parent:
3:64a7d39e423b
Commit message:
DHT11 module attached to update real temperature and humidity.

Changed in this revision

DHT11.lib Show annotated file Show diff for this revision Revisions of this file
main.cpp Show annotated file Show diff for this revision Revisions of this file 
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DHT11.lib	Fri Dec 26 07:54:23 2014 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/s_inoue_mbed/code/DHT11/#e91c151d1798

--- a/main.cpp	Thu Dec 25 11:25:49 2014 +0000
+++ b/main.cpp	Fri Dec 26 07:54:23 2014 +0000
@@ -32,6 +32,16 @@
 
 #define QUICKSTARTMODE 1
 
+// It shows real temperature and humidity with DHT11.
+#define DHT11_TEMPERATURE 0
+
+#if DHT11_TEMPERATURE
+#include "DHT11.h"
+
+DHT11 dht(D4);
+
+#endif
+
 #if (QUICKSTARTMODE)
 // Configuration values needed to connect to IBM IoT Cloud
 #define ORG "quickstart"             // For a registered connection, replace with your org
@@ -156,9 +166,27 @@
     char* pubTopic = "iot-2/evt/status/fmt/json";
 
     char buf[250];
+    double temp, humi;
+
+#if DHT11_TEMPERATURE
+	int s = dht.readData();
+	if (s != DHT11::OK) {
+	     printf("DHT11 Error: %d\r\n", s);
+	     temp = humi = 0;
+	}
+	else {
+		printf("T:%d, H:%d\r\n", dht.readTemperature(), dht.readHumidity());
+		temp = dht.readTemperature();
+		humi = dht.readHumidity();
+	}
+#else
+	// simulate environment data
+	temp = (120+(rand()%100)) / 10.0;
+	humi = (200+(rand()%150)) / 10.0;
+#endif
     sprintf(buf,
-     "{\"d\":{\"myName\":\"IoT mbed\",\"test_value\":%d}}",
-            12+(rand()%10));
+     "{\"d\":{\"myName\":\"IoT mbed\",\"temperature\":%.1f,\"humidity\":%.1f}}",
+            temp, humi);
 
     message.qos = MQTT::QOS0;
     message.retained = false;
@@ -238,8 +266,8 @@
             //  or maybe just add the proper members to do this disconnect and call attemptConnect(...)
         }
 
-        if (++count == 100)
-        {               // Publish a message every second
+        if (++count == 200)
+        {               // Publish a message every two second
             if (publish(&client, &ipstack) != 0)
             {
 				WARN("publish error\r\n");