Sample MQTT program - simple send and receive

Dependencies:   C12832 MQTT

Dependents:   MQTT_G_SENSOR

This program and the MQTT libraries it uses are part of the EclipseTM Paho project; specifically the embedded client.

This example and API are working, but are still in progress. Please give us your feedback.

HelloMQTT is an example of using the MQTT API. The MQTT API is portable across network interface stacks. MQTT is designed to be used with TCP/IP, but any transport with similar characteristics should be suitable.

HelloMQTT uses the NetworkInterface APIs in mbed OS 5 to show how this works. The MQTT library contains an MQTTNetwork.h header, which is a wrapper around the mbed networking interface. To switch between connectivity methods (the default is Ethernet) the easy-connect library is provided in this example application. You can change the connectivity method in mbed_app.json.

Adding new connectivity methods to the program is trivial, as long as they implement the mbed OS 5 NetworkStack API.

Revisions of main.cpp

Revision Date Message Actions
21:a68bd76740f9 2017-09-07 changeset: 21:6ab7c0b84d9e File  Diff  Annotate
20:49c9daf2b0ff 2017-01-10 Update to mbed OS 5, use NetworkInterface for multiple connectivity methods - not just ethernet File  Diff  Annotate
19:7f7aba7a4a8b 2015-07-30 Subscribe at QoS 2, remove lcd.cls() calls File  Diff  Annotate
18:07a79d8f01c3 2015-07-27 Make it easy to not use LCD screen, if you don't have one File  Diff  Annotate
17:0811bdbdd78a 2015-07-27 Make sure QoS 2 works File  Diff  Annotate
16:28d062c5522b 2014-10-06 Update to latest MQTT library - change some pointers to references File  Diff  Annotate
12:086a9314e8a5 2014-08-01 Some cleaning up File  Diff  Annotate
9:5beb8609e9f7 2014-05-22 Latest version File  Diff  Annotate
8:a3e3113054a1 2014-05-20 Refactoring headers File  Diff  Annotate
7:3de634f2d40c 2014-05-11 Merge latest changes File  Diff  Annotate
6:e4c690c45021 2014-05-11 Wildcard subscriptions File  Diff  Annotate
5:4a257f6ac09a 2014-05-09 Updates to the example to use the virtual serial port and the LCD for feedback File  Diff  Annotate
3:7a6a899de7cc 2014-05-06 Use latest MQTT library on both mbed and Linux File  Diff  Annotate
2:638c854c0695 2014-04-30 Update to the latest level of code File  Diff  Annotate
1:a1d5c7a6acbc 2014-02-05 Add copyright statement to main program File  Diff  Annotate
0:0cae29831d01 2014-02-04 Sample program for MQTT client File  Diff  Annotate