Simple demo with GPIO MQTT protocol test on STM32 broker tests.mosquitto.org WIFI interface ESP8266 Issue of topic0 by pressing the button If reception of ', switching of the led If received from 'q' end of program

Dependencies:   MQTT

This is a MQTT protocol test on STM32 NUCLEO The broker is tests.mosquitto.org The WIFI interface is ESP8266

For configuration please check mbed_app.json and #define in main.cpp

Issue of topic0 by pressing the button If received 'l' from broker then switching of the led If received 'q' from broker then end the program

Information and debug with a terminal using UART over USB https://os.mbed.com/media/uploads/cdupaty/mqtt2.jpg

This test has been checked with MQTT.fx https://os.mbed.com/media/uploads/cdupaty/mqttfx.jpg

Revision:
5:4a257f6ac09a
Parent:
3:7a6a899de7cc
Child:
7:3de634f2d40c
--- a/main.cpp	Fri May 09 21:33:48 2014 +0000
+++ b/main.cpp	Fri May 09 23:06:43 2014 +0000
@@ -25,121 +25,45 @@
  */
 
 #include "mbed.h"
-#include "EthernetInterface.h"
+#include "EthernetInterfaceIPStack.h"
 
-#include "C12832_lcd.h"
-C12832_LCD lcd;
+#include "C12832.h"
+C12832 lcd(p5, p7, p6, p8, p11);
 
 #include "FP.cpp"
 #include "MQTTClient.h"
 
-
-
-class IPStack 
-{
-public:    
-    IPStack()
-    {
-        eth.init();                          // Use DHCP
-        eth.connect();
-        mysock.set_blocking(false, 1000);    // 1 second Timeout 
-    }
-    
-    int connect(char* hostname, int port)
-    {
-        return mysock.connect(hostname, port);
-    }
-
-    int read(char* buffer, int len, int timeout)
-    {
-        mysock.set_blocking(false, timeout);  
-        return mysock.receive(buffer, len);
-    }
-    
-    int write(char* buffer, int len, int timeout)
-    {
-        mysock.set_blocking(false, timeout);  
-        return mysock.send(buffer, len);
-    }
-    
-    int disconnect()
-    {
-        return mysock.close();
-    }
-    
-private:
-
-    EthernetInterface eth;
-    TCPSocketConnection mysock; 
-    
-};
-
-
-class Countdown
-{
-public:
-    Countdown()
-    {
-        t = Timer();   
-    }
-    
-    Countdown(int ms)
-    {
-        t = Timer();
-        countdown_ms(ms);   
-    }
-    
-    
-    bool expired()
-    {
-        return t.read_ms() >= interval_end_ms;
-    }
-    
-    void countdown_ms(int ms)  
-    {
-        t.stop();
-        interval_end_ms = ms;
-        t.reset();
-        t.start();
-    }
-    
-    void countdown(int seconds)
-    {
-        countdown_ms(seconds * 1000);
-    }
-    
-    int left_ms()
-    {
-        return interval_end_ms - t.read_ms();
-    }
-    
-private:
-    Timer t;
-    int interval_end_ms; 
-};
-
 int arrivedcount = 0;
 
 void messageArrived(MQTT::Message* message)
 {
-    lcd.printf("Message arrived: qos %d, retained %d, dup %d, packetid %d\n", message->qos, message->retained, message->dup, message->id);
-    lcd.printf("Payload %.*s\n", message->payloadlen, (char*)message->payload);
+    lcd.cls();
+    lcd.locate(0,3);
+    printf("Message arrived: qos %d, retained %d, dup %d, packetid %d\n", message->qos, message->retained, message->dup, message->id);
+    printf("Payload %.*s\n", message->payloadlen, (char*)message->payload);
     ++arrivedcount;
+    lcd.puts((char*)message->payload);
 }
 
 int connect(MQTT::Client<IPStack, Countdown>::connectionLostInfo* info)
 {
     char* hostname = "m2m.eclipse.org";
     int port = 1883;
-    lcd.printf("Connecting to %s:%d\n", hostname, port);
+    
+    lcd.cls();
+    lcd.locate(0,3);
+    lcd.printf("%s:%d\n", hostname, port);
+    printf("Connecting to %s:%d\n", hostname, port);
     int rc = info->network->connect(hostname, port);
-    lcd.printf("rc from TCP connect is %d\n", rc);
+    lcd.printf("TCP connect = %d\n", rc);
+    printf("rc from TCP connect is %d\n", rc);
  
     MQTTPacket_connectData data = MQTTPacket_connectData_initializer;       
     data.MQTTVersion = 3;
     data.clientID.cstring = "mbed-icraggs";
     rc = info->client->connect(&data);
-    lcd.printf("rc from MQTT connect is %d\n", rc);
+    lcd.printf("MQTT connect = %d\n", rc);
+    printf("rc from MQTT connect is %d\n", rc);
     
     return rc;
 }
@@ -152,6 +76,7 @@
     char* topic = "mbed-sample";
     
     lcd.printf("Version is %f\n", version);
+    printf("Version is %f\n", version);
               
     MQTT::Client<IPStack, Countdown> client = MQTT::Client<IPStack, Countdown>(ipstack);
     
@@ -161,8 +86,9 @@
     int rc = connect(&info);
     
     rc = client.subscribe(topic, MQTT::QOS1, messageArrived);   
-    if (rc != 0)
-        lcd.printf("rc from MQTT subscribe is %d\n", rc);
+    if (rc != 0) {
+        printf("rc from MQTT subscribe is %d\n", rc);
+    }
 
     MQTT::Message message;
 
@@ -195,16 +121,21 @@
         client.yield(100);
     
     rc = client.unsubscribe(topic);
-    if (rc != 0)
-        lcd.printf("rc from unsubscribe was %d\n", rc);
+    if (rc != 0) {
+        printf("rc from unsubscribe was %d\n", rc);
+    }
     
     rc = client.disconnect();
-    if (rc != 0)
-        lcd.printf("rc from disconnect was %d\n", rc);
+    if (rc != 0) {
+        printf("rc from disconnect was %d\n", rc);
+    }
     
     ipstack.disconnect();
     
-    lcd.printf("Finishing with %d messages received\n", arrivedcount);
+    lcd.cls();
+    lcd.locate(0,3);
+    lcd.printf("Finish: %d msgs\n", arrivedcount);
+    printf("Finishing with %d messages received\n", arrivedcount);
     
     return 0;
 }