Real-Time Embedded Systems—Open-Source Operating Systems Perspective [Book News]

2012 ◽  
Vol 6 (1) ◽  
pp. 60-61
Author(s):  
Richard Zurawski
Keyword(s):  
Embedded Systems ◽  
Open Source ◽  
Real Time ◽  
Operating Systems ◽  
Systems Perspective

Open source real-time operating systems for plasma control at FTU

2004 ◽  
Vol 51 (3) ◽  
pp. 476-481 ◽  
Author(s):  
C. Centioli ◽  
F. Iannone ◽  
G. Mazza ◽  
M. Panella ◽  
L. Pangione ◽  
...  
Keyword(s):  
Open Source ◽  
Real Time ◽  
Operating Systems ◽  
Plasma Control

scholarly journals Open-Source FPGA Coprocessor for the Doppler Emulation of Moving Fluids

Micromachines ◽  
2021 ◽  
Vol 12 (12) ◽  
pp. 1549
Author(s):  
Stefano Ricci
Keyword(s):  
Embedded Systems ◽  
Embedded System ◽  
Open Source ◽  
Real Time ◽  
Field Programmable Gate Array ◽  
Synthetic Signal ◽  
Doppler System ◽  
Wide Range ◽  
Field Programmable ◽  
Moving Fluid

Embedded systems are nowadays employed in a wide range of application, and their capability to implement calculation-intensive algorithms is growing quickly and constantly. This result is obtained by the exploitation of powerful embedded processors that are often connected to coprocessors optimized for a particular application. This work presents an open-source coprocessor dedicated to the real-time generation of a synthetic signal that mimics the echoes produced by a moving fluid when investigated by ultrasounds. The coprocessor is implemented in a Field Programmable Gate Array (FPGA) device and integrated in an embedded system. The system can replace the complex and inaccurate flow-rigs employed in laboratorial tests of Doppler ultrasound systems and methods. This paper details the coprocessor and its standard interfaces, and shows how it can be integrated in the wider architecture of an embedded system. Experiments showed its capability to emulate a fluid flowing in a pipe when investigated by an echographic Doppler system.

scholarly journals DSCBlocks: An Open-Source Platform for Learning Embedded Systems Based on Algorithm Visualizations and Digital Signal Controllers

Electronics ◽  
2019 ◽  
Vol 8 (2) ◽  
pp. 228 ◽  
Author(s):  
Jonathan Álvarez Ariza
Keyword(s):  
Operating System ◽  
Embedded Systems ◽  
Open Source ◽  
Real Time ◽  
Processing Speed ◽  
Digital Signal ◽  
C Language ◽  
Real Time Operating System ◽  
Models Of Development ◽  
Educational Methodology

DSCBlocks is an open-source platform in hardware and software developed in JavaFX, which is focused on learning embedded systems through Digital Signal Controllers (DSCs). These devices are employed in industrial and educational sectors due to their robustness, number of peripherals, processing speed, scalability and versatility. The platform uses graphical blocks designed in Google’s tool Blockly that can be used to build different Algorithm Visualizations (AVs). Afterwards, the algorithms are converted in real-time to C language, according to the specifications of the compiler for the DSCs (XC16) and they can be downloaded in one of the two models of development board for the dsPIC 33FJ128GP804 and dsPIC 33FJ128MC802. The main aim of the platform is to provide a flexible environment, drawing on the educational advantages of the AVs with different aspects concerning the embedded systems, such as declaration of variables and functions, configuration of ports and peripherals, handling of Real-Time Operating System (RTOS), interrupts, among others, that are employed in several fields such as robotics, control, instrumentation, etc. In addition, some experiments that were designed in the platform are presented in the manuscript. The educational methodology and the assessment provided by the students (n = 30) suggest that the platform is suitable and reliable to learn concepts relating to embedded systems.

Real-Time Attributes in Operating Systems

2011 ◽  
pp. 275-287 ◽  
Author(s):  
Tommaso Cucinotta ◽  
Spyridon V. Gogouvitis
Keyword(s):  
Open Source ◽  
Real Time ◽  
Operating Systems ◽  
Distributed Applications ◽  
General Purpose ◽  
Multimedia Applications ◽  
Multimedia Contents ◽  
Wide Availability

General-Purpose Operating Systems (GPOSes) are being used more and more extensively to support interactive, real-time, and distributed applications, as found in the multimedia domain. In fact, the wide availability of supported multimedia devices and protocols, together with the wide availability of libraries and tools for handling multimedia contents, make them an almost ideal platform for the development of this kind of complex applications. However, contrarily to Real-Time Operating Systems, General-Purpose ones used to lack some important functionality needed for providing proper scheduling guarantees to application processes. Recently, the increasing use of GPOSes for multimedia applications is gradually pushing OS developers towards enriching the kernel of a GPOS so as to provide more and more real-time functionality, thus enhancing the performance and responsiveness of hosted time-sensitive applications. In this chapter, an overview is performed over the efforts done in the direction of enriching GPOSes with real-time capabilities, with a particular focus on the Linux OS. Due to its open-source nature and wide diffusion and availability, Linux is one of the most widely used OSes for such experimentations.

Embedded Virtualization Techniques for Automotive Infotainment Applications

2014 ◽  
pp. 372-387
Author(s):  
Massimo Violante ◽  
Gianpaolo Macario ◽  
Salvatore Campagna
Keyword(s):  
Operating System ◽  
Embedded Systems ◽  
Experimental Evidence ◽  
Real Time ◽  
Operating Systems ◽  
Resource Usage ◽  
Single Chip ◽  
Real Time Operating System ◽  
Multicore Computing ◽  
Computing Platforms

Automotive infotainment applications are examples of embedded systems in which a heterogeneous software stack is used, which most likely comprises a real-time operating system, an automotive-grade Linux, and possibly Android. Thanks to the availability of modern systems-on-a-chip providing multicore computing platforms, architects have the possibility of integrating the entire software stack in a single chip. Embedded virtualization appears an interesting technology to achieve this goal, while providing the different operating systems the capability of exchanging data as well as optimizing resource usage. Although very well known in server-class systems, virtualization is rather new to the embedded domain; in order to leverage its benefits, it is therefore mandatory to understand its peculiarities and shortcomings. In this chapter, the authors illustrate the virtualization technologies with particular emphasis on hypervisors and Linux Containers. Moreover, they illustrate how those technologies can cooperate to fulfill the requirements on automotive infotainment applications. Finally, the authors report some experimental evidence of the performance overheads introduced when using embedded virtualization.

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