MTB daemon

MTB daemon is a simple console computer application intended to be run as a service. It features 2 interfaces:

• MTB-USB v4 connection via USB CDC
• json tcp server

Aim of this daemon is

1. to allow multiple applications to control single MTBbus
2. to provide nice communication API with MTBbus.

JSON server features API for setting MTBbus modules state, getting MTBbus modules state as well as configuring modules, changing MTBbus speed etc.

TCP protocol description

Program workflow

When program starts, configuration file mtb-daemon.json is read. If the file does not exists, it is created. JSON server is started. When server cannot be started, program dies. Main application loop is started.

Daemon searches for available MTB-USB modules. If it finds module specified in configuration, it connects. It reports changes to clients and allows clients to control MTBbus and MTBbus modules. When connection with MTB-USB fails, daemon reports this event to clients and keeps running. When MTB-USB is available again, connection is established again.

Using

Just start the console application and let it run as a daemon on background.

$ ./mtb-daemon [config-filename]

The program takes a single optional argument – path to main configuration file (default: ./mtb-daemon.json).

See Description of mtb-daemon.json file.

Building & toolkit

This library was developed in vim using qmake & make. It is suggested to use clang as a compiler, because then you may use clang-tools (see below).

Prerequisities

• Qt 5/6
• Qt's serialport
• Bear

Example: toolchain setup on Debian 12 Bookworm

$ apt install qt6-base-dev qt6-serialport-dev
$ apt install bear
$ apt install clang clang-tools clang-tidy clang-format

Build

Clone this repository:

$ git clone https://github.com/kmzbrnoI/mtb-daemon

And then build:

$ mkdir build
$ cd build
$ qmake -spec linux-clang ..
$ # qmake CONFIG+=debug -spec linux-clang ..
$ bear make

Compiling for Windows

Just open the project in Qt Creator and compile it. This approach is currently used to build windows binaries in releases.

Testing

This repository contains tests for MTB Daemon. See README in test directory.

Style checking

$ clang-tidy -p build src/*.cpp
$ clang-format <all .cpp and .h files in the 'src' directory>
$ clang-include-fixer -p build src/*.cpp

For clang-include-fixer to work, it is necessary to build yaml symbols database. You can do it this way:

1. Download run-find-all-symbols.py from github repo.
2. Execute it in build directory.

Authors

This library was created by:

• Jan Horacek (jan.horacek@kmz-brno.cz)

Do not hesitate to contact author in case of any troubles!

License

This application is released under the Apache License v2.0 .