PENGFEI GAO / Mbed 2 deprecated pg297_a5

the code of obtain senor data and connect to MQTT

Dependencies:   C12832 EthernetInterface MMA7660 MQTT USBDevice mbed-rtos mbed

Fork of HelloMQTT by MQTT

main.cpp@18:07a79d8f01c3, 2015-07-27 (annotated)

Committer:
icraggs
Date:
Mon Jul 27 09:30:31 2015 +0000
Revision:
18:07a79d8f01c3
Parent:
17:0811bdbdd78a
Child:
19:7f7aba7a4a8b
Make it easy to not use LCD screen, if you don't have one

Who changed what in which revision?

UserRevisionLine numberNew contents of line
icraggs 1:a1d5c7a6acbc 1 /*******************************************************************************
icraggs 17:0811bdbdd78a 2 * Copyright (c) 2014, 2015 IBM Corp.
icraggs 1:a1d5c7a6acbc 3 *
icraggs 1:a1d5c7a6acbc 4 * All rights reserved. This program and the accompanying materials
icraggs 1:a1d5c7a6acbc 5 * are made available under the terms of the Eclipse Public License v1.0
icraggs 1:a1d5c7a6acbc 6 * and Eclipse Distribution License v1.0 which accompany this distribution.
icraggs 1:a1d5c7a6acbc 7 *
icraggs 1:a1d5c7a6acbc 8 * The Eclipse Public License is available at
icraggs 1:a1d5c7a6acbc 9 * http://www.eclipse.org/legal/epl-v10.html
icraggs 1:a1d5c7a6acbc 10 * and the Eclipse Distribution License is available at
icraggs 1:a1d5c7a6acbc 11 * http://www.eclipse.org/org/documents/edl-v10.php.
icraggs 1:a1d5c7a6acbc 12 *
icraggs 1:a1d5c7a6acbc 13 * Contributors:
icraggs 1:a1d5c7a6acbc 14 * Ian Craggs - initial API and implementation and/or initial documentation
icraggs 17:0811bdbdd78a 15 * Ian Craggs - make sure QoS2 processing works, and add device headers
icraggs 1:a1d5c7a6acbc 16 *******************************************************************************/
icraggs 2:638c854c0695 17
icraggs 2:638c854c0695 18 /**
icraggs 2:638c854c0695 19 This is a sample program to illustrate the use of the MQTT Client library
icraggs 2:638c854c0695 20 on the mbed platform. The Client class requires two classes which mediate
icraggs 2:638c854c0695 21 access to system interfaces for networking and timing. As long as these two
icraggs 2:638c854c0695 22 classes provide the required public programming interfaces, it does not matter
icraggs 2:638c854c0695 23 what facilities they use underneath. In this program, they use the mbed
icraggs 2:638c854c0695 24 system libraries.
icraggs 2:638c854c0695 25
icraggs 2:638c854c0695 26 */
icraggs 18:07a79d8f01c3 27
icraggs 18:07a79d8f01c3 28 // change this to 0 to output messages to serial instead of LCD
icraggs 18:07a79d8f01c3 29 #define USE_LCD 1
icraggs 1:a1d5c7a6acbc 30
icraggs 18:07a79d8f01c3 31 #if USE_LCD
icraggs 17:0811bdbdd78a 32 #include "C12832.h"
icraggs 2:638c854c0695 33
icraggs 17:0811bdbdd78a 34 #if defined(TARGET_UBLOX_C027)
icraggs 17:0811bdbdd78a 35 #warning "Compiling for mbed C027"
icraggs 17:0811bdbdd78a 36 #include "C027.h"
icraggs 17:0811bdbdd78a 37 #elif defined(TARGET_LPC1768)
icraggs 17:0811bdbdd78a 38 #warning "Compiling for mbed LPC1768"
icraggs 17:0811bdbdd78a 39 #include "LPC1768.h"
icraggs 17:0811bdbdd78a 40 #elif defined(TARGET_K64F)
icraggs 17:0811bdbdd78a 41 #warning "Compiling for mbed K64F"
icraggs 17:0811bdbdd78a 42 #include "K64F.h"
icraggs 17:0811bdbdd78a 43 #endif
icraggs 17:0811bdbdd78a 44
icraggs 18:07a79d8f01c3 45 #define printf lcd.cls();lcd.printf
icraggs 18:07a79d8f01c3 46
icraggs 18:07a79d8f01c3 47 #endif
icraggs 18:07a79d8f01c3 48
icraggs 17:0811bdbdd78a 49 #define MQTTCLIENT_QOS2 1
icraggs 0:0cae29831d01 50
icraggs 8:a3e3113054a1 51 #include "MQTTEthernet.h"
icraggs 2:638c854c0695 52 #include "MQTTClient.h"
icraggs 2:638c854c0695 53
icraggs 2:638c854c0695 54 int arrivedcount = 0;
icraggs 2:638c854c0695 55
icraggs 8:a3e3113054a1 56
icraggs 9:5beb8609e9f7 57 void messageArrived(MQTT::MessageData& md)
icraggs 2:638c854c0695 58 {
icraggs 9:5beb8609e9f7 59 MQTT::Message &message = md.message;
icraggs 9:5beb8609e9f7 60 printf("Message arrived: qos %d, retained %d, dup %d, packetid %d\n", message.qos, message.retained, message.dup, message.id);
icraggs 9:5beb8609e9f7 61 printf("Payload %.*s\n", message.payloadlen, (char*)message.payload);
icraggs 2:638c854c0695 62 ++arrivedcount;
icraggs 2:638c854c0695 63 }
icraggs 0:0cae29831d01 64
icraggs 2:638c854c0695 65
icraggs 2:638c854c0695 66 int main(int argc, char* argv[])
icraggs 2:638c854c0695 67 {
icraggs 8:a3e3113054a1 68 MQTTEthernet ipstack = MQTTEthernet();
icraggs 17:0811bdbdd78a 69 float version = 0.5;
icraggs 2:638c854c0695 70 char* topic = "mbed-sample";
icraggs 2:638c854c0695 71
icraggs 18:07a79d8f01c3 72 printf("HelloMQTT: version is %f\n", version);
icraggs 2:638c854c0695 73
icraggs 8:a3e3113054a1 74 MQTT::Client<MQTTEthernet, Countdown> client = MQTT::Client<MQTTEthernet, Countdown>(ipstack);
icraggs 3:7a6a899de7cc 75
icraggs 6:e4c690c45021 76 char* hostname = "m2m.eclipse.org";
icraggs 6:e4c690c45021 77 int port = 1883;
icraggs 18:07a79d8f01c3 78 printf("Connecting to %s:%d\n", hostname, port);
icraggs 6:e4c690c45021 79 int rc = ipstack.connect(hostname, port);
icraggs 6:e4c690c45021 80 if (rc != 0)
icraggs 18:07a79d8f01c3 81 printf("rc from TCP connect is %d\n", rc);
icraggs 6:e4c690c45021 82
icraggs 6:e4c690c45021 83 MQTTPacket_connectData data = MQTTPacket_connectData_initializer;
icraggs 6:e4c690c45021 84 data.MQTTVersion = 3;
icraggs 8:a3e3113054a1 85 data.clientID.cstring = "mbed-sample";
icraggs 12:086a9314e8a5 86 data.username.cstring = "testuser";
icraggs 12:086a9314e8a5 87 data.password.cstring = "testpassword";
icraggs 16:28d062c5522b 88 if ((rc = client.connect(data)) != 0)
icraggs 18:07a79d8f01c3 89 printf("rc from MQTT connect is %d\n", rc);
icraggs 2:638c854c0695 90
icraggs 8:a3e3113054a1 91 if ((rc = client.subscribe(topic, MQTT::QOS1, messageArrived)) != 0)
icraggs 18:07a79d8f01c3 92 printf("rc from MQTT subscribe is %d\n", rc);
icraggs 2:638c854c0695 93
icraggs 2:638c854c0695 94 MQTT::Message message;
icraggs 0:0cae29831d01 95
icraggs 2:638c854c0695 96 // QoS 0
icraggs 2:638c854c0695 97 char buf[100];
icraggs 2:638c854c0695 98 sprintf(buf, "Hello World! QoS 0 message from app version %f\n", version);
icraggs 2:638c854c0695 99 message.qos = MQTT::QOS0;
icraggs 2:638c854c0695 100 message.retained = false;
icraggs 2:638c854c0695 101 message.dup = false;
icraggs 2:638c854c0695 102 message.payload = (void*)buf;
icraggs 2:638c854c0695 103 message.payloadlen = strlen(buf)+1;
icraggs 16:28d062c5522b 104 rc = client.publish(topic, message);
icraggs 12:086a9314e8a5 105 while (arrivedcount < 1)
icraggs 2:638c854c0695 106 client.yield(100);
icraggs 2:638c854c0695 107
icraggs 2:638c854c0695 108 // QoS 1
icraggs 2:638c854c0695 109 sprintf(buf, "Hello World! QoS 1 message from app version %f\n", version);
icraggs 2:638c854c0695 110 message.qos = MQTT::QOS1;
icraggs 2:638c854c0695 111 message.payloadlen = strlen(buf)+1;
icraggs 16:28d062c5522b 112 rc = client.publish(topic, message);
icraggs 12:086a9314e8a5 113 while (arrivedcount < 2)
icraggs 2:638c854c0695 114 client.yield(100);
icraggs 2:638c854c0695 115
icraggs 2:638c854c0695 116 // QoS 2
icraggs 2:638c854c0695 117 sprintf(buf, "Hello World! QoS 2 message from app version %f\n", version);
icraggs 2:638c854c0695 118 message.qos = MQTT::QOS2;
icraggs 2:638c854c0695 119 message.payloadlen = strlen(buf)+1;
icraggs 16:28d062c5522b 120 rc = client.publish(topic, message);
icraggs 12:086a9314e8a5 121 while (arrivedcount < 3)
icraggs 2:638c854c0695 122 client.yield(100);
icraggs 17:0811bdbdd78a 123
icraggs 17:0811bdbdd78a 124 if ((rc = client.unsubscribe(topic)) != 0)
icraggs 12:086a9314e8a5 125 {
icraggs 17:0811bdbdd78a 126 lcd.cls();
icraggs 18:07a79d8f01c3 127 printf("rc from unsubscribe was %d\n", rc);
icraggs 12:086a9314e8a5 128 }
icraggs 2:638c854c0695 129
icraggs 8:a3e3113054a1 130 if ((rc = client.disconnect()) != 0)
icraggs 17:0811bdbdd78a 131 {
icraggs 17:0811bdbdd78a 132 lcd.cls();
icraggs 18:07a79d8f01c3 133 printf("rc from disconnect was %d\n", rc);
icraggs 17:0811bdbdd78a 134 }
icraggs 2:638c854c0695 135
icraggs 2:638c854c0695 136 ipstack.disconnect();
icraggs 2:638c854c0695 137
icraggs 18:07a79d8f01c3 138 printf("Version %.2f: finish %d msgs\n", version, arrivedcount);
icraggs 2:638c854c0695 139
icraggs 0:0cae29831d01 140 return 0;
icraggs 0:0cae29831d01 141 }