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Category Archives: Projects

is_constexpr – a template to test if a function is constexpr

C++ allows declaring functions as constexpr. Such functions could be evaluated at compile time and used, for example in if constexpr(...). However, a non-constexpr function in this context is not allowed. So, if we want to write a template, accepting a function and using it in either if constexpr(...) or old plain if(...) we need […]

setof – an iterable set of strongly typed enumerations

This post suggests an implementation of template class setof which facilitates features of a bit set and a forward-iterable container.

C++ switch with textual cases

C++ does not allow using string literals as case values in a switch statement. In modern C++ this restriction can be worked around with constexpr hash values.

any_of<c1, …, c2>(v)

This simple C++17 template implements constexpr any_of for matching a value against a list of constants.

COJSON library for Arduino

COJSON library is also available as Arduino Studio .ZIP library: cojson.zip.

cojson tutorial for C++17

C++17 has simplified use of template parameters. Instructions, given in this tutorial, describes how to define JSON model with cojson::autos templates. Note: GCC 7 or higher is required to compile cojson_autos.hpp !

COJSON Code Generator

cojson v.2 offers an easy start option by using C++ code automatically generated from a JSON sample the user needs to parse or to write. To use this option just open codegen page, load or copy-&-paste your JSON and copy-&-paste or save the generated C++ code. And then build your application with cojson sources .

USB++ a C++14 template library for handy descriptor definition

Overview USB++ (usbplusplus) is a C++14 template library that gives the user a simple and error-prone way for defining USB descriptors, suitable for embedded projects.

VLC multiroom

VLC-multiroom is a shell script that on a Linux-based media computer configures systemd to run multiple VLC Media Player instances for audio playback via all available ALSA sound cards and for web based remote control with a purpose to make the media computer the core of a multiroom audio system.

μcuREST Tutorial

Getting Started With μcuREST you can implement REST services and/or a web application for communication with your embedded application. First you’ll need to decide which resources (variables or functions of your application) you wish to expose via HTTP and assign URI to those resources. Then define a μcuRESTresource map, binding URI names to the resources. […]