Getting started

Getting started may be the most challenging part of every new library. This guide is describing how to start with the library quickly and effectively

Download library

Library is primarly hosted on Github.

You can get it with:

  • Downloading latest release from releases area on Github

  • Cloning master branch for latest stable version

  • Cloning develop branch for latest development

Download from releases

All releases are available on Github releases area.

Clone from Github

First-time clone

This is used when you do not have yet local copy on your machine.

  • Make sure git is installed.

  • Open console and navigate to path in the system to clone repository to. Use command cd your_path

  • Clone repository with one of available 3 options

    • Run git clone --recurse-submodules command to clone entire repository, including submodules

    • Run git clone --recurse-submodules --branch develop to clone development branch, including submodules

    • Run git clone --recurse-submodules --branch master to clone latest stable branch, including submodules

  • Navigate to examples directory and run favourite example

Update cloned to latest version

  • Open console and navigate to path in the system where your resources repository is. Use command cd your_path

  • Run git pull origin master --recurse-submodules command to pull latest changes and to fetch latest changes from submodules on master branch

  • Run git pull origin develop --recurse-submodules command to pull latest changes and to fetch latest changes from submodules on develop branch

  • Run git submodule foreach git pull origin master to update & merge all submodules


This is preferred option to use when you want to evaluate library and run prepared examples. Repository consists of multiple submodules which can be automatically downloaded when cloning and pulling changes from root repository.

Add library to project

At this point it is assumed that you have successfully download library, either cloned it or from releases page. Next step is to add the library to the project, by means of source files to compiler inputs and header files in search path

  • Copy lwrb folder to your project, it contains library files

  • Add lwrb/src/include folder to include path of your toolchain. This is where C/C++ compiler can find the files during compilation process. Usually using -I flag

  • Add source files from lwrb/src/ folder to toolchain build. These files are built by C/C++ compilery

  • Build the project

Minimal example code

To verify proper library setup, minimal example has been prepared. Run it in your main application file to verify its proper execution

Absolute minimum example
 1#include "lwrb/lwrb.h"
 3/* Declare rb instance & raw data */
 4lwrb_t buff;
 5uint8_t buff_data[8];
 7/* Application variables */
 8uint8_t data[2];     /* Application working data */
10/* Application code ... */
11lwrb_init(&buff, buff_data, sizeof(buff_data)); /* Initialize buffer */
13/* Write 4 bytes of data */
14lwrb_write(&buff, "0123", 4);
16/* Print number of bytes in buffer */
17printf("Bytes in buffer: %d\r\n", (int)lwrb_get_full(&buff));
19/* Will print "4" */