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Linux and Electronics
Linux and Electronics Urs Lindegger Linux and Electronics Urs Lindegger Copyright © 2019-11-25 Urs Lindegger Table of Contents 1. Introduction .......................................................................................................... 1 Note ................................................................................................................ 1 2. Printed Circuits ...................................................................................................... 2 Printed Circuit Board design ................................................................................ 2 Kicad ....................................................................................................... 2 Eagle ..................................................................................................... 13 Simulation ...................................................................................................... 13 Spice ..................................................................................................... 13 Digital simulation .................................................................................... 18 Wings 3D ....................................................................................................... 18 User interface .......................................................................................... 19 Modeling ................................................................................................ 19 Making holes in Wings 3D ....................................................................... -
FUJITSU AI Zinrai Deep Learning System 200M/210H Software License Terms
FUJITSU AI Zinrai Deep Learning System 200M/210H Software License Terms Copyright 2021 FUJITSU LIMITED P3KD-1962-01EN 1. NVIDIA Product License Terms This product uses the following NVIDIA products. Name Version Tesla Driver for Linux x64 460.73.01 cuDNN 8.2.2 These NVIDIA products can be downloaded from the NVIDIA home page. http://www.nvidia.com/page/home.html Regarding the terms and conditions of the license for Tesla Driver for Linux x64 460.73.01, see "END USER LICENSE AGREEMENTS (EULA)" in the Appendix. Regarding the terms and conditions of the license for cuDNN 8.2.2, see "NVIDIA SOFTWARE LICENSE AGREEMENT" in the Appendix. 2. NGC Software This product contains the open source software ("OSS") as described in this document. The license terms for each OSS are as described below. • PyTorch 1.9.0 From PyTorch: Copyright (c) 2016- Facebook, Inc (Adam Paszke) Copyright (c) 2014- Facebook, Inc (Soumith Chintala) Copyright (c) 2011-2014 Idiap Research Institute (Ronan Collobert) Copyright (c) 2012-2014 Deepmind Technologies (Koray Kavukcuoglu) Copyright (c) 2011-2012 NEC Laboratories America (Koray Kavukcuoglu) Copyright (c) 2011-2013 NYU (Clement Farabet) Copyright (c) 2006-2010 NEC Laboratories America (Ronan Collobert, Leon Bottou, Iain Melvin, Jason Weston) Copyright (c) 2006 Idiap Research Institute (Samy Bengio) Copyright (c) 2001-2004 Idiap Research Institute (Ronan Collobert, Samy Bengio, Johnny Mariethoz) From Caffe2: Copyright (c) 2016-present, Facebook Inc. All rights reserved. All contributions by Facebook: Copyright (c) 2016 Facebook Inc. All contributions by Google: Copyright (c) 2015 Google Inc. All rights reserved. All contributions by Yangqing Jia: Copyright (c) 2015 Yangqing Jia All rights reserved. -
Meeting Agenda 4:30 – 6:00 PM, Wednesday, Nov 2Nd, 2016 Lyons Town Hall
Meeting Agenda 4:30 – 6:00 PM, Wednesday, Nov 2nd, 2016 Lyons Town Hall I. Roll Call, Agenda, Minutes • Amendments to Agenda • Approve Minutes from Oct 19th • UEB Officers and Member Lead Areas • Upcoming Meetings - Nov 12, 2016 9 AM or 1 PM - Lyons Boards and Commissions Training - Lyons Nov 9. 8 AM - Northern Water Fall Water Users Meeting - Longmont, Best Western 1850 Industrial Cir. Dec 2nd - CAMU Fall Meeting - Fairfield & Woods in Denver, CO II. Audience Business III. Liaison Updates • Board of Trustees Update - MEAN meeting Report • Staff, Engineering Update - Honeywell Savings Gaurantee IV. Continued Business ● Town Utility Account tracking V. New Business ● Water/Wastewater Rate and CIP Study Presentation RG & Assoc. VI. Parking Lot • 2017 Utility FUnd Budget, Pipe Water rates for 2017 Budget, • Reserve/Rate Stabilization Funds • Wastewater Pretreatment Policy • LRAP INF 2.2.1 • Municipal Code Corrections UEB Meeting Minutes, 19 Oct 2016 Meeting Time and Location: Began at 4:30 at Town Hall. Attendance:, Aaron Caplan, Lee Hall, Coco Gordon, John Cowdry, Chuck Keim, Dan Reitz, Jay Stott Staff: Kyle Miller Liaisons: Guests: Amendments to Agenda: Welcomed Jay Stott as the newest member of the UEB. Previous Minutes: . Reviewed and modified Oct 5th Minutes under Water Wastewater CIP to add “Areas where there is no looping of the water mains need looping. It was emphasized to try and coordinate getting water, and wastewater done first in areas that need paving.” Aaron had not followed up with Parks and Rec to find out if they were budgeting for water usage. He would do so. Then approved minutes. -
Create an Email with Subject Title “Embedded Software Engineer”, Email a Copy of Your Resume to [email protected]
To Apply for This Position: Create an email with subject title “Embedded Software Engineer”, email a copy of your resume to [email protected] Location Address: ALLEN PARK, MI,48101 Position Description: TITLE: Embedded Software Engineer ‐ Hypervisor OS technologies This position is responsible to develop QNX and Android operating system images for Ford infotainment products. This includes creating and integrating code for: bootloader, kernel, drivers, type 1 hypervisor, and build environment. Skills Required: • Lead the design, bring‐up and support of QNX and Android operating system images • Create virt‐io drivers for QNX or Android guest operating systems • Participate in root cause analysis of hardware quality problems and software defects • Participate in system design, documentation, and testing to deliver a best‐in‐class infotainment system Experience Required: • 5+ years operating system experience involving Linux or QNX • 5+ years C/C++ software development experience on embedded, mobile, or consumer electronic platforms Experience Preferred: • Experience with Type 1 hypervisors • Experience creating virt‐io drivers • Mastery of C/C++ language, GNU tool chain, and Unix (QNX, Linux, or equivalent) • Experience with embedded build systems including QNX system builder, buildroot, yocto, or equivalent • Knowledge of in‐vehicle signaling and communication mechanisms such as CAN • Proficiency with revision control including Git, Subversion, or equivalent • Multi‐site software project team experience Education Required: • Bachelor's degree in Computer Engineering, Electrical Engineering, Computer Science, or related Education Preferred: • Master's degree in Computer Engineering, Electrical Engineering or Computer Science Additional Information: Web Based Assessment not required for this position. Visa Sponsorship and Domestic Relocation is available for this position. -
Embedded Linux Systems with the Yocto Project™
OPEN SOURCE SOFTWARE DEVELOPMENT SERIES Embedded Linux Systems with the Yocto Project" FREE SAMPLE CHAPTER SHARE WITH OTHERS �f, � � � � Embedded Linux Systems with the Yocto ProjectTM This page intentionally left blank Embedded Linux Systems with the Yocto ProjectTM Rudolf J. Streif Boston • Columbus • Indianapolis • New York • San Francisco • Amsterdam • Cape Town Dubai • London • Madrid • Milan • Munich • Paris • Montreal • Toronto • Delhi • Mexico City São Paulo • Sidney • Hong Kong • Seoul • Singapore • Taipei • Tokyo Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trademarks. Where those designations appear in this book, and the publisher was aware of a trademark claim, the designations have been printed with initial capital letters or in all capitals. The author and publisher have taken care in the preparation of this book, but make no expressed or implied warranty of any kind and assume no responsibility for errors or omissions. No liability is assumed for incidental or consequential damages in connection with or arising out of the use of the information or programs contained herein. For information about buying this title in bulk quantities, or for special sales opportunities (which may include electronic versions; custom cover designs; and content particular to your business, training goals, marketing focus, or branding interests), please contact our corporate sales depart- ment at [email protected] or (800) 382-3419. For government sales inquiries, please contact [email protected]. For questions about sales outside the U.S., please contact [email protected]. Visit us on the Web: informit.com Cataloging-in-Publication Data is on file with the Library of Congress. -
Atomicity and Visibility in Tiny Embedded Systems
Atomicity and Visibility in Tiny Embedded Systems John Regehr Nathan Cooprider David Gay University of Utah, School of Computing Intel Research Berkeley {regehr, coop}@cs.utah.edu [email protected] Abstract bool flag = false; // interrupt handler Visibility is a property of a programming language’s void __vector_5 (void) memory model that determines when values stored by { one concurrent computation become visible to other atomic flag = true; computations. Our work exploits the insight that in } nesC, a C-like language with explicit atomicity, the traditional way of ensuring timely visibility—volatile void wait_for_interrupt(void) variables—can be entirely avoided. This is advan- { tageous because the volatile qualifier is a notorious bool done = false; do { source of programming errors and misunderstandings. atomic if (!flag) done = true; Furthermore, the volatile qualifier hurts performance } while (!done); by inhibiting many more optimizations than are neces- } sary to ensure visibility. In this paper we extend the semantics of nesC’s atomic statements to include a visi- bility guarantee, we show two ways that these semantics Figure 1. nesC code containing a visibility er- can be implemented, and we also show that our better ror implementation has no drawbacks in terms of resource usage. Until now, nesC has left it to programmers to en- 1. Introduction sure visibility by judicious use of C’s volatile qual- ifier. In this paper we investigate the idea of strength- ening nesC’s memory model such that the semantics of The nesC [5] language is a C dialect designed for pro- atomic are augmented with a visibility guarantee. This gramming embedded wireless sensor network nodes. -
Smashing the Stack Protector for Fun and Profit
Smashing the Stack Protector for Fun and Profit Bruno Bierbaumer1 ( ), Julian Kirsch1, Thomas Kittel1, Aurélien Francillon2, and Apostolis Zarras3 1 Technical University of Munich, Munich, Germany [email protected] 2 EURECOM, Sophia Antipolis, France 3 Maastricht University, Maastricht, Netherlands Abstract. Software exploitation has been proven to be a lucrative busi- ness for cybercriminals. Unfortunately, protecting software against attacks is a long-lasting endeavor that is still under active research. However, certain software-hardening schemes are already incorporated into current compilers and are actively used to make software exploitation a compli- cated procedure for the adversaries. Stack canaries are such a protection mechanism. Stack canaries aim to prevent control flow hijack by detecting corruption of a specific value on the program’s stack. Careful design and implementation of this conceptually straightforward mechanism is crucial to defeat stack-based control flow detours. In this paper, we examine 17 different stack canary implementations across multiple versions of the most popular Operating Systems running on various architectures. We systematically compare critical implementation details and introduce one new generic attack vector which allows bypassing stack canaries on current Linux systems running up-to-date multi-threaded software altogether. We release an open-source framework (CookieCrumbler) that identifies the characteristics of stack canaries on any platform it is compiled on and we propose mitigation techniques against stack-based attacks. Although stack canaries may appear obsolete, we show that when they are used correctly, they can prevent intrusions which even the more sophisticated solutions may potentially fail to block. 1 Introduction Buffer overflow vulnerabilities are as old as the Internet itself. -
Current Status of Win32 Gdk Implementation
Current status of Win32 Gdk implementation Bertrand Bellenot - [email protected] Features (recall) ! Same environment on every system : ! Same look and feel on every platform. ! Simplify the code maintenance : ! No need to care about a « windows specific code ». ! Simplify functionality extension : ! No need to implement the code twice, once for windows and once for other OS. ! Only use TVirtualX. Actual Status (recall) ! The actual code uses a modified version of gdk and glib, the GIMP low-level libraries ported on win32. In practice, this means that we only need to link with gdk.lib, glib.lib and iconv.dll as additional libraries (hopefully less in the future). These libraries are under LGPL, so there are no licensing issues in using and distributing them. ! As original version of gdk was not doing everything needed by root (as font orientation!), I did have to slightly modify the original code. Points fixed since last year ! Some characters were not displayed. " ! Some problems with icon’s transparency. " ! The event handling was not perfect. " ! OpenGL was not working. " Events handling architecture (actual) TSystem CINT TGClient TVirtualX Gdk Threads issue ! From gdk developper FAQ : ! Without some major restructuring in GDK-Win32, I don't think there is any chance that GTK+ would work, in general, in a multi-threaded app, with different threads accessing windows created by other threads. ! One problem is that each thread in Windows have its own message queue. GDK-Win32 currently uses just one "message pump" in the main thread. It will never see messages for windows created by other threads. Threads issue ! As gdk is not thread safe, I had to create a separate thread from within the gdk calls are made. -
Operating Systems and Applications for Embedded Systems >>> Toolchains
>>> Operating Systems And Applications For Embedded Systems >>> Toolchains Name: Mariusz Naumowicz Date: 31 sierpnia 2018 [~]$ _ [1/19] >>> Plan 1. Toolchain Toolchain Main component of GNU toolchain C library Finding a toolchain 2. crosstool-NG crosstool-NG Installing Anatomy of a toolchain Information about cross-compiler Configruation Most interesting features Sysroot Other tools POSIX functions AP [~]$ _ [2/19] >>> Toolchain A toolchain is the set of tools that compiles source code into executables that can run on your target device, and includes a compiler, a linker, and run-time libraries. [1. Toolchain]$ _ [3/19] >>> Main component of GNU toolchain * Binutils: A set of binary utilities including the assembler, and the linker, ld. It is available at http://www.gnu.org/software/binutils/. * GNU Compiler Collection (GCC): These are the compilers for C and other languages which, depending on the version of GCC, include C++, Objective-C, Objective-C++, Java, Fortran, Ada, and Go. They all use a common back-end which produces assembler code which is fed to the GNU assembler. It is available at http://gcc.gnu.org/. * C library: A standardized API based on the POSIX specification which is the principle interface to the operating system kernel from applications. There are several C libraries to consider, see the following section. [1. Toolchain]$ _ [4/19] >>> C library * glibc: Available at http://www.gnu.org/software/libc. It is the standard GNU C library. It is big and, until recently, not very configurable, but it is the most complete implementation of the POSIX API. * eglibc: Available at http://www.eglibc.org/home. -
OS Selection for Dummies
OS SELECTION HOW TO CHOOSE HOW TO CHOOSE Choosing your OS is the first step, so take the time to consider your choice fully. There are many parameters to take into account: l Is this a new project or the evolution of an existing product? l Using the same SW stack? Re-using existing code? l Is your team familiar with a particular OS? Ø Using an OS you are already comfortable with can help l What are the HW constraints of your system? Ø Some operating systems require more memory/processing power than others l Have no SW team? Not sure about the above? Ø Contact us so we can help you decide! Ø We can also introduce you to one of our many partners! 1 OS SELECTION OPEN SOURCE VS. COMMERCIAL OS Embedded OS BSP Provider $ Cost Open-Source OS Boundary Devices • Embedded Linux / Android Embedded Linux $0, included • Large pool of developers available with Board Purchase • Strong community • Royalty-free And / or partners 3rd Party - Commercial OS Partners • QNX / Win10 IoT / Green Hills $>0, depends on • Professional support requirements • Unique set of development tools 2 OS SELECTION OPEN SOURCE SELECTION OS SELECTION PROS CONS Embedded Linux Most powerful / optimized Complexity for newcomers solution, maintained by NXP • Build systems Ø Yocto / Buildroot Simpler solution, makefile- Not as flexible as Yocto Ø Everything built from scratch based, maintained by BD Desktop-like approach, Harder to customize, non- Package-based distribution easy-to-use atomic updates, no cross- • Ubuntu / Debian compilation SDK Apt install / update, millions • Packages installed from server of prebuilt packages available Android Millions of apps available, same number of developers, Resource-hungry, complex • AOSP-based (no GMS) development environment, BSP modifications (HAL) • APK applications IDE + debugging tools 3 SOFTWARE PARTNERS Boundary Devices has an industry-leading group of software partners. -
Concurrent Cilk: Lazy Promotion from Tasks to Threads in C/C++
Concurrent Cilk: Lazy Promotion from Tasks to Threads in C/C++ Christopher S. Zakian, Timothy A. K. Zakian Abhishek Kulkarni, Buddhika Chamith, and Ryan R. Newton Indiana University - Bloomington, fczakian, tzakian, adkulkar, budkahaw, [email protected] Abstract. Library and language support for scheduling non-blocking tasks has greatly improved, as have lightweight (user) threading packages. How- ever, there is a significant gap between the two developments. In previous work|and in today's software packages|lightweight thread creation incurs much larger overheads than tasking libraries, even on tasks that end up never blocking. This limitation can be removed. To that end, we describe an extension to the Intel Cilk Plus runtime system, Concurrent Cilk, where tasks are lazily promoted to threads. Concurrent Cilk removes the overhead of thread creation on threads which end up calling no blocking operations, and is the first system to do so for C/C++ with legacy support (standard calling conventions and stack representations). We demonstrate that Concurrent Cilk adds negligible overhead to existing Cilk programs, while its promoted threads remain more efficient than OS threads in terms of context-switch overhead and blocking communication. Further, it enables development of blocking data structures that create non-fork-join dependence graphs|which can expose more parallelism, and better supports data-driven computations waiting on results from remote devices. 1 Introduction Both task-parallelism [1, 11, 13, 15] and lightweight threading [20] libraries have become popular for different kinds of applications. The key difference between a task and a thread is that threads may block|for example when performing IO|and then resume again. -
Training Embedded Linux with Ac6 System Workbench: Implementing Linux on Embedded Systems - Operating Systems: Linux
Training Embedded Linux with Ac6 System Workbench: Implementing Linux on Embedded Systems - Operating Systems: Linux D1S - Embedded Linux with Ac6 System Workbench Implementing Linux on Embedded Systems Objectives Understanding the architecture of the Linux system Learn how to install Linux on your hardware and create a BSP Explore the Linux system architecture Booting Linux Initializing the system Install existing packages on the target Learn how to install Linux on flash chips Labs are conducted on target boards, that can be: Dual Cortex/A7-based "STM32MP15-DISCO" boards from STMicroelectronics. Quad Cortex/A9-based "SabreLite" boards from NXP. Quad Cortex/A53-based "imx8q-evk" boards from NXP. We use a recent (4.x) linux kernel, as supported by the chip supplier. All labs are conducted using the System Workbench for Linux IDE. Course environment Printed course material (in English) One Linux PC for two trainees. One target platform for two trainees A version of “Ac6 System Workbench for Linux – Basic Edition” is provided free of charge to each trainee Prerequisite Good C programming skills Knowledge of Linux user programming (see our D0 - Linux User Mode Programming course) Preferably knowledge of Linux kernel and driver programming (see our D3 - Linux Drivers course) D1S - Embedded Linux with Ac6 System Workbench 09/28/21 Plan First Day Introduction to Linux Linux history and Version management Linux system architecture Processes and MMU System calls Shared libraries Linux components Toolchain Bootloader Kernel Root file system Linux