Tato práce je zaměřena na zpracování a analýzu USB komunikačního protokolu a implementace jeho jednotlivých částí do FPGA obvodu s využitím programovacího jazyka VHDL. Ve finální podobě by měla práce představovat souhrnný a ucelený dokument popisující principy USB rozhraní a jeho komunikace doplněných praktickým návrhem v jazyce VHDL, který by byl schopen převést data do USB.

Cyber-physical systems are computers equipped with sensors and actuators that enable them to interact with their surrounding environments. Ground vehicles, drones, and manufacturing robots are examples of such systems that require timing guarantees in addition to functional correctness to achieve their mission objectives. These systems often use multiple microcontroller boards for workload distribution and physical redundancy. The emergence of PC-class embedded systems featuring high processing capabilities and abundant resources presents an opportunity to consolidate separate microcontroller boards as software-defined functions into fewer computer systems. For instance, current automotive systems utilize upwards of 100 electronic control units (ECUs) for chassis, body, power-train, infotainment, and vehicle control services. Consolidation saves manufacturing costs, reduces wiring, simplifies packaging in space-limited situations, and streamlines software update delivery to end-users. However, consolidating functions on PC-class hardware does not address the real-time I/O challenges. A fundamental problem in such real-time solutions is the handling of device input and output in a timely manner. For example, a control system might require input data from a sensor to be sampled and processed regularly so that output signals to actuators occur within specific delay bounds. Input/output (I/O) devices connect to the host computer using different types of bus interfaces not necessarily supported by PC-class hardware natively. Examples of such interfaces include Controller Area Network (CAN) and FlexRay, which are prominent in the automotive world, but are not found in PC-class embedded systems. Universal Serial Bus (USB) is now ubiquitous in the PC-class domain, in part due to its support for many classes of devices with simplified hardware needed to connect to the host, and can be utilized to bridge this gap. USB provides the throughput and delay capabilities for next-generation high bandwidth sensors to be integrated with actuators in control area networks. However, typical USB host controller drivers suffer from potential timing delays that affect the delivery of data between tasks and devices. This Ph.D. thesis examines the use of Universal Serial Bus (USB) as the physical fabric for host-to-device and host-to-host communication, without special switching hardware or protocol translation logic, and through a unified programming interface. Combined with the real-time scheduling framework of the Quest RTOS, this work investigates how to form networks of I/O devices and computing nodes over USB with end-to-end timing guarantees. The main contribution of this thesis is a USB-centric design solution for real-time cyber-physical systems with distributed computing nodes.

This thesis deals with design of numeric keyboard, which can be connected to personal computer or laptop through USB interface. This numeric keyboard can be also configured using application for operating system Windows. Backlight pattern generator is also part of this application. Theoretic part deals with various types of keyboards, switches and closer description of USB interface. Practical part deals with sole design of circuit that detects keystrokes and sends information about active switches through USB, description of used components, description of microcontroller service routine and description of the application for backlight pattern generating. At the end of this thesis are described results of measurements which were made to choose mechanical switches with shortest debounce time and keyboard response to key press.

The aim of Master’s thesis Control of the communication on the USB is realization hardware and software designed for microcontroller C8051F120 what is enabling recording of data on memory medium Flash drive. It includes study of USB, transfer protocols, which are needed and file system. The thesis deals about host type USB controllers and about USB controller MAX3421E fy Maxim, which has been choosen for development of software. It is required ability to create directories and files including recording data to file and ability of reading data from files in the file system FAT16.

The Swedish Defence Materiel Administration provides tests and evaluations of military Aircrafts and their systems as well as provide services in connection with military exercises. Testing aircraft against a radar antenna and training crews with this radar is part of that offering. The radar is deployed in a container rig and controlled by a computer running Windows 2000. The current option to control this computer is a mouse and keyboard. In this thesis, a system will be designed that is able to improve the ease of use of this rig while minimizing any need to modify the radar rig’s already established hardware and software. The resulting system designed used a commercially available joystick and off the shelf single board micro-controllers in combination with a graphical user interface to supply the radar rig with a converted input from the joystick in the form of mouse and keyboard commands, simplifying the end-user experience. / Försvarets materielverk tillhandahåller test och evaluering av militära flygsystem. De tillhandahåller även tjänster rörande militära övningar såsom belysning av flygplan med en radar för att öva piloter. Denna radar är monterad i en container och kontrolleras av en styrdator som kör operativsystemet Windows 2000. Denna dator styrs med hjälp av en mus och tangentbord. I denna rapport kommer ett system designas som kan förbättra användarupplevelsen av denna dator samtidigt som förändringar av hårdvara eller mjukvara i styrdatorn undviks. Resultatet av rapporten var ett system bestående av en kommersiellt tillgänglig joystick och två microkontrollers i kombination med ett grafiskt användargränssnitt som omvandlar knapptryck och styrutslag från joysticken till mus och tangentbords kommandon i styrdatorn.

Diplom work describes a proposal and the design of the device for controlling the temperature test in a climatic chamber Heraeus and the creation of software for operating equipment. Work describes in detail the design and construction interface for the climate chamber, with which will be able to run automated test sequences and the development of the firmware and the operating software to start the temperature test.

This thesis was selected due to establishing of universal platform for USBTMC remote instrumentation and constructing a laboratory DC power supply for hobby use. This thesis is focused on design and realization of regulated linear DC power supply. At first thesis mentions kinds of DC power supplies and kinds of interfaces used for test and measurement instruments. Thesis continues by describing of blocks of a developed linear DC power supply with an USB interface following the USBTMC specification for remote control. Thesis ends by realization of the regulated linear DC power supply with USBTMC interface. It was achieved acceptable results. Communication between PC and Control module works well as same as communication between Control module and Power supply module. Maximum output ranges of voltage and current are 40V and 3A. Big interference on auxiliary supply rail decreases accuracy.