MQTT cellular example
Dependencies: C027 C027_Support C12832 mbed-rtos mbed FP MQTTPacket
Fork of HelloMQTT by
main.cpp
- Committer:
- mazgch
- Date:
- 2014-05-12
- Revision:
- 9:996c8c7aa1f9
- Parent:
- 8:b32c94be6522
File content as of revision 9:996c8c7aa1f9:
/******************************************************************************* * Copyright (c) 2014 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 MQTT 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. */ #include "mbed.h" #include "EthernetInterfaceIPStack.h" #include "C027.h" #include "MDM.h" //---------------------------------------------------------------------- // You may need to configure these parameters /** Set your secret SIM pin here "1234" */ #define SIMPIN NULL /** The APN of your network operator, sometimes it is "internet" check your contract with the network operator */ #define APN "gprs.swisscom.ch" /** Set the user name for your APN, or NULL if not needed */ #define USERNAME NULL /** Set the password for your APN, or NULL if not needed */ #define PASSWORD NULL C027 c027; #include "C12832.h" C12832 lcd(D11, D13, D12, D7, D10); #include "FP.cpp" #include "MQTTClient.h" int arrivedcount = 0; void messageArrived(MQTT::Message* 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[]) { // turn on the supplies of the Modem and the GPS c027.mdmPower(true); wait(2); // Create the modem object MDMSerial mdm; // initialize the modem printf("Modem Initialize\r\n"); MDMParser::DevStatus devStatus; bool mdmOk = mdm.init(SIMPIN, &devStatus); if (mdmOk) { // wait until we are connected printf("Network Check\r\n"); MDMParser::NetStatus netStatus; while (!mdm.checkNetStatus(&netStatus)) wait_ms(1000); printf("Network Join\r\n"); // join the internet connection MDMParser::IP ip = mdm.join(APN,USERNAME,PASSWORD); if (ip != NOIP) { printf(" IP Address: " IPSTR "\r\n", IPNUM(ip)); IPStack ipstack = IPStack(); float version = 0.43; 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); char* hostname = "m2m.eclipse.org"; int port = 1883; 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); MQTTPacket_connectData data = MQTTPacket_connectData_initializer; data.MQTTVersion = 3; data.clientID.cstring = "mbed-icraggs"; rc = client.connect(&data); if (rc != 0) lcd.printf("rc from MQTT connect is %d\n", rc); rc = client.subscribe(topic, MQTT::QOS1, messageArrived); if (rc != 0) { printf("rc from MQTT subscribe is %d\n", rc); } MQTT::Message message; // QoS 0 char buf[100]; sprintf(buf, "Hello World! QoS 0 message from app version %f\n", version); message.qos = MQTT::QOS0; message.retained = false; message.dup = false; message.payload = (void*)buf; message.payloadlen = strlen(buf)+1; rc = client.publish(topic, &message); while (arrivedcount == 0) client.yield(100); // QoS 1 sprintf(buf, "Hello World! QoS 1 message from app version %f\n", version); message.qos = MQTT::QOS1; message.payloadlen = strlen(buf)+1; rc = client.publish(topic, &message); while (arrivedcount == 1) client.yield(100); // QoS 2 sprintf(buf, "Hello World! QoS 2 message from app version %f\n", version); message.qos = MQTT::QOS2; message.payloadlen = strlen(buf)+1; rc = client.publish(topic, &message); while (arrivedcount == 2) client.yield(100); rc = client.unsubscribe(topic); if (rc != 0) { printf("rc from unsubscribe was %d\n", rc); } rc = client.disconnect(); if (rc != 0) { printf("rc from disconnect was %d\n", rc); } mdm.disconnect(); } } mdm.powerOff(); c027.mdmPower(false); lcd.cls(); lcd.locate(0,3); lcd.printf("Finish: %d msgs\n", arrivedcount); printf("Finishing with %d messages received\n", arrivedcount); while(true); }