1# 基于鸿蒙LiteOS-M内核平台的Paho MQTT库 2 3原始的 Paho MQTT源码：https://github.com/eclipse/paho.mqtt.embedded-c 4 5鸿蒙系统相关移植文件：MQTTClient-C\src\liteOS\MQTTLiteOS.c 6 7# Eclipse Paho MQTT C/C++ client for Embedded platforms 8 9This repository contains the source code for the [Eclipse Paho](http://eclipse.org/paho) MQTT C/C++ client library for Embedded platorms. 10 11It is dual licensed under the EPL and EDL (see about.html and notice.html for more details). You can choose which of these licenses you want to use the code under. The EDL allows you to embed the code into your application, and distribute your application in binary or source form without contributing any of your code, or any changes you make back to Paho. See the EDL for the exact conditions. 12 13There are three sub-projects: 14 151. MQTTPacket - simple de/serialization of MQTT packets, plus helper functions 162. MQTTClient - high(er) level C++ client, plus 173. MQTTClient-C - high(er) level C client (pretty much a clone of the C++ client) 18 19The *MQTTPacket* directory contains the lowest level C library with the smallest requirements. This supplies simple serialization 20and deserialization routines. They serve as a base for the higher level libraries, but can also be used on their own 21It is mainly up to you to write and read to and from the network. 22 23The *MQTTClient* directory contains the next level C++ library. This networking code is contained in separate classes so that you can plugin the 24network of your choice. Currently there are implementations for Linux, Arduino and mbed. ARM mbed was the first platform for which this was written, 25where the conventional language choice is C++, which explains the language choice. I have written a starter [Porting Guide](http://modelbasedtesting.co.uk/2014/08/25/porting-a-paho-embedded-c-client/). 26 27The *MQTTClient-C* directory contains a C equivalent of MQTTClient, for those platforms where C++ is not supported or the convention. As far 28as possible it is a direct translation from *MQTTClient*. 29 30## Build requirements / compilation 31 32CMake builds for the various packages have been introduced, along with Travis-CI configuration for automated build & testing. The basic 33method of building on Linux is: 34 35``` 36mkdir build.paho 37cd build.paho 38cmake .. 39make 40``` 41 42The travis-build.sh file has the full build and test sequence for Linux. 43 44 45## Usage and API 46 47See the samples directories for examples of intended use. Doxygen config files for each package are available in the doc directory. 48 49## Runtime tracing 50 51The *MQTTClient* API has debug tracing for MQTT packets sent and received - turn this on by setting the MQTT_DEBUG preprocessor definition. 52 53 54## Reporting bugs 55 56This project uses GitHub Issues here: [github.com/eclipse/paho.mqtt.embedded-c/issues](https://github.com/eclipse/paho.mqtt.embedded-c/issues) to track ongoing development and issues. 57 58## More information 59 60Discussion of the Paho clients takes place on the [Eclipse Mattermost Paho channel](https://mattermost.eclipse.org/eclipse/channels/paho) and the [Eclipse paho-dev mailing list](https://dev.eclipse.org/mailman/listinfo/paho-dev). 61 62More information is available via the [MQTT community](http://mqtt.org). 63