Skip to main content

Posts

Showing posts from 2013

Qt Developer Days 2013, Europe

I'll be heading to the Qt Developer Days in Berlin next week. We answered the call for their Lightning Talks , a 10 minute talk on a Qt related subject, and we will showcase our code & gear. Presenter: Oliver Heggelbacher & Frankie Simon Abstract: fullmo Kickdrive – Qt Quick in Industry Automation Or - how to give users a dynamic playground, while hiding away the complex machinery behind it. The Kickdrive software platform is a multi-layered and multi-language approach to industrial machine configuration and control. Qt Quick allows for beautiful and highly adaptable user interaction on top of a C++/QWidget application. In Kickdrive, the QML files are part of the project data – something that comes as a ready-to-use template, but the users can hack and change it to their liking. They touch up, tweak and extend their project UIs, evolving into co-developers of sorts. We will show off how we cross boundaries and connect the dots: from the Qt Quick UI via Python Sc...

ASCII TCP protocols in Windows ANSI C or C++

My recent project work included applications with a servo drive controller that offers a simple text-based protocol via TCP. We many times explain this to our clients as the fastest way to integrate the drive, especially if their part is a standalone Windows software project that does not already have any fieldbus communications up and running.  But to our own surprise, discussions went frequently like this: “We recommend the direct TCP interface - this is so much easier than adding extra Ethercat or Profinet equipment for this purpose.“ “Yes, but how does TCP work? ” “Easy. Just open a TCP client connection to the drive controller, and send these simple ASCII commands.” “Yes, but I have no idea about TCP connections. Don’t you have a simple DLL for this?” So we decided to help out and make a DLL indeed. Not one that implements the servo controller interface, but a simplistic and generic way of processing text-based protocols and dealing with the TCP socket connection. And I ...