Diff: main.cpp

Revision:

0:7bd27f2e3fb3

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Feb 26 16:01:54 2015 +0000
@@ -0,0 +1,173 @@
+/*******************************************************************************
+ * Copyright (c) 2014, 2015 IBM Corp.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * and Eclipse Distribution License v1.0 which accompany this distribution.
+ *
+ * The Eclipse Public License is available at
+ *    http://www.eclipse.org/legal/epl-v10.html
+ * and the Eclipse Distribution License is available at
+ *   http://www.eclipse.org/org/documents/edl-v10.php.
+ *
+ * Contributors:
+ *    Ian Craggs - initial API and implementation and/or initial documentation
+ *******************************************************************************/
+ 
+ /**
+  This is a sample program to illustrate the use of the MQTTSN Client library
+  on the mbed platform.  The Client class requires two classes which mediate
+  access to system interfaces for networking and timing.  As long as these two
+  classes provide the required public programming interfaces, it does not matter
+  what facilities they use underneath. In this program, they use the mbed
+  system libraries.
+ 
+ */
+ 
+ #define WARN printf
+
+#include "EthernetInterface.h"
+#include "C12832.h"
+
+#if defined(TARGET_LPC1768)
+#warning "Compiling for mbed LPC1768"
+#include "LPC1768.h"
+#elif defined(TARGET_K64F)
+#warning "Compiling for mbed K64F"
+#include "K64F.h"
+#endif
+
+#define MQTTSNCLIENT_QOS2 1
+#include "MQTTSNUDP.h"
+#include "MQTTSNClient.h"
+
+int arrivedcount = 0;
+
+
+void off()
+{
+    r = g = b = 1.0;    // 1 is off, 0 is full brightness
+}
+
+void red()
+{
+    r = 0.7; g = 1.0; b = 1.0;    // 1 is off, 0 is full brightness
+}
+
+void yellow()
+{
+    r = 0.7; g = 0.7; b = 1.0;    // 1 is off, 0 is full brightness
+}
+
+void green()
+{
+    r = 1.0; g = 0.7; b = 1.0;    // 1 is off, 0 is full brightness
+}
+
+
+void messageArrived(MQTTSN::MessageData& md)
+{
+    MQTTSN::Message &message = md.message;
+    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 main(int argc, char* argv[])
+{   
+    MQTTSNUDP ipstack = MQTTSNUDP();
+    float version = 0.47;
+    char* topic = "mbed-sample";
+    
+    lcd.printf("Version is %f\n", version);
+    printf("Version is %f\n", version);
+              
+    MQTTSN::Client<MQTTSNUDP, Countdown> client = MQTTSN::Client<MQTTSNUDP, Countdown>(ipstack);
+    
+    EthernetInterface eth;
+    eth.init();                          // Use DHCP
+    eth.connect();
+    
+    char* hostname = "9.20.230.78";
+    int port = 20000;
+    lcd.printf("Connecting to %s:%d\n", hostname, port);
+    int rc = ipstack.connect(hostname, port);
+    if (rc != 0)
+        lcd.printf("rc from TCP connect is %d\n", rc);
+    else
+        green();
+ 
+    MQTTSNPacket_connectData data = MQTTSNPacket_connectData_initializer;       
+    data.clientID.cstring = "mbed-sample";
+    data.duration = 60;
+    if ((rc = client.connect(data)) != 0)
+        lcd.printf("rc from MQTT connect is %d\n", rc);
+    
+    MQTTSN_topicid topicid;
+    topicid.type = MQTTSN_TOPIC_TYPE_NORMAL;
+    topicid.data.long_.name = topic;
+    topicid.data.long_.len = strlen(topic);
+    MQTTSN::QoS grantedQoS;
+    if ((rc = client.subscribe(topicid, MQTTSN::QOS1, grantedQoS, messageArrived)) != 0)
+        lcd.printf("rc from MQTT subscribe is %d\n", rc);
+
+    MQTTSN::Message message;
+
+    // QoS 0
+    char buf[100];
+    sprintf(buf, "Hello World!  QoS 0 message from app version %f\n", version);
+    message.qos = MQTTSN::QOS0;
+    message.retained = false;
+    message.dup = false;
+    message.payload = (void*)buf;
+    message.payloadlen = strlen(buf)+1;
+    rc = client.publish(topicid, message);
+    while (arrivedcount < 1)
+        client.yield(100);
+        
+    // QoS 1
+    sprintf(buf, "Hello World!  QoS 1 message from app version %f\n", version);
+    message.qos = MQTTSN::QOS1;
+    message.payloadlen = strlen(buf)+1;
+    rc = client.publish(topicid, message);
+    while (arrivedcount < 2)
+        client.yield(100);
+        
+    // QoS 2
+    sprintf(buf, "Hello World!  QoS 2 message from app version %f\n", version);
+    message.qos = MQTTSN::QOS2;
+    message.payloadlen = strlen(buf)+1;
+    rc = client.publish(topicid, message);
+    while (arrivedcount < 3)
+        client.yield(100);
+        
+    // n * QoS 2
+    for (int i = 1; i <= 10; ++i)
+    {
+        sprintf(buf, "Hello World!  QoS 2 message number %d from app version %f\n", i, version);
+        message.qos = MQTTSN::QOS2;
+        message.payloadlen = strlen(buf)+1;
+        rc = client.publish(topicid, message);
+        while (arrivedcount < i + 3)
+            client.yield(100);
+    }
+    
+    if ((rc = client.unsubscribe(topicid)) != 0)
+        printf("rc from unsubscribe was %d\n", rc);
+    
+    if ((rc = client.disconnect()) != 0)
+        printf("rc from disconnect was %d\n", rc);
+    
+    ipstack.disconnect();
+    
+    lcd.cls();
+    lcd.locate(0,3);
+    lcd.printf("Version %.2f: finish %d msgs\n", version, arrivedcount);
+    printf("Finishing with %d messages received\n", arrivedcount);
+    
+    return 0;
+}