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.

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.

scholarly journals UbiFOS: A Small Real-Time Operating System for Embedded Systems

ETRI Journal ◽  
2007 ◽  
Vol 29 (3) ◽  
pp. 259-269 ◽  
Author(s):  
Hee-Joong Ahn ◽  
Moon-Haeng Cho ◽  
Myoung-Jo Jung ◽  
Yong-Hee Kim ◽  
Joo-Man Kim ◽  
...  
Keyword(s):  
Operating System ◽  
Embedded Systems ◽  
Real Time ◽  
Real Time Operating System

scholarly journals Multi-windows Rendering Using Software OpenGL in Avionics Embedded Systems

2019 ◽  
Author(s):  
Борис Барладян ◽  
Boris Barladyan ◽  
Лев Шапиро ◽  
Lev Shapiro ◽  
Курбан Маллачиев ◽  
...  
Keyword(s):  
Operating System ◽  
Embedded Systems ◽  
Real Time ◽  
Real Time Operating System ◽  
The Real ◽  
Large Displays ◽  
Safety Critical ◽  
Large Display ◽  
Combine Information

Elaboration of modern airplane cockpit has tendency to use large displays instead of a lot of separate indicators. The large display should combine information about flight navigation and state of plane equipment. Information coming from a wide variety of devices should be displayed simultaneously. Therefore multi-windows rendering is vitally important here. Its implementation must be embedded in real-time operating system which controls the aircraft. Development of a Safety Critical Compositor for multi-windows rendering for OpenGL SC 1.0.1 software is considered in the paper. It works under the real-time operating system JetOS newly designed for aircraft. Development is based on the use of extensions designed to work in multi-core systems in addition to standard JetOS partitioning services.

scholarly journals PERFORMANCE COMPARISON OF USART COMMUNICATION BETWEEN REAL TIME OPERATING SYSTEM (RTOS) AND NATIVE INTERRUPT

2016 ◽  
Vol 9 (1) ◽  
pp. 43
Author(s):  
Novian Habibie ◽  
Machmud Roby Alhamidi ◽  
Dwi Marhaendro Jati Purnomo ◽  
Muhammad Febrian Rachmadi
Keyword(s):  
Operating System ◽  
Embedded Systems ◽  
Embedded System ◽  
Real Time ◽  
Performance Comparison ◽  
The Other ◽  
Crucial Point ◽  
Real Time Operating System ◽  
Interrupt Service Routine ◽  
External Component

Comunication between microcontrollers is one of the crucial point in embedded sytems. On the other hand, embedded system must be able to run many parallel task simultaneously. To handle this, we need a reliabe system that can do a multitasking without decreasing every task’s performance. The most widely used methods for multitasking in embedded systems are using Interrupt Service Routine (ISR) or using Real Time Operating System (RTOS). This research compared perfomance of USART communication on system with RTOS to a system that use interrupt. Experiments run on two identical development board XMega A3BU-Xplained which used intenal sensor (light and temperature) and used servo as external component. Perfomance comparison done by counting ping time (elapsing time to transmit data and get a reply as a mark that data has been received) and compare it. This experiments divided into two scenarios: (1) system loaded with many tasks, (2) system loaded with few tasks. Result of the experiments show that communication will be faster if system only loaded with few tasks. System with RTOS has won from interrupt in case (1), but lose to interrupt in case (2).

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