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At Barr Group, our mission is to help as many embedded systems engineers as possible make their products safer, more reliable and more secure. In addition to providing product design, consulting, and training services, we encourage our engineers to share their technical expertise by writing and teaching. We hope that you will learn something from these free how-to articles. Please respect the copyright notices at the bottom of each page.

How to Install and Configure the RedBoot ROM Monitor

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RedBoot is a portable, open-source ROM monitor that offers a download and debug environment. What more could you want?

How to Port the eCos Operating System

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The first task when using any new real-time operating system (RTOS) is to get it up and running on your hardware. The open-source eCos RTOS makes that part pretty easy.

How to Reduce Power Consumption by Writing Better Software

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Whether you are creating an operating system, firmware, or even device drivers, the way you write the software could affect the power consumption of the resulting product. Here are four approaches to minimizing power consumption through software.

Mutexes and Semaphores Demystified

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The question "What is the difference between a mutex and a semaphore?" is short and easily phrased.  Answering it is more difficult.  In this first installment of a series of articles on the proper use of a real-time operating system (RTOS), we examine the important differences between a mutex and a semaphore.

Bug-Killing Coding Standard Rules for Embedded C

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A C coding standard can help keep bugs out of embedded software by leveraging common language features and development tools.

More Bug-Killing Coding Standards for Embedded C

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This second article on enforceable coding standards for embedded systems adds a set of additional bug-killing rules for using certain C keywords and naming global variables.

A Framework for Safe Motion Control Firmware

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An object-oriented framework can be used to create safe, testable and tunable motion control systems.

Software Reliability and the Internet of Things

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As Internet connectivity advances, the transportation, automotive, medical device, smart grid and other industry sectors have become more dependent on embedded software. But is embedded software up to the required level of reliability?

How to Secure Consumable Components of Medical Devices and Other Embedded Systems

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A number of embedded systems, such as medical devices and printers, feature replaceable components designed to be installed new, consumed through one or more cycles of product use, and ultimately disposed. This article describes the security challenges associated with the design of such consumable components as well as practical solutions.

How to Minimize Interrupt Service Routine (ISR) Overhead

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With all the automation available today, it's easy for programmers to overlook costly overhead introduced into machine code by the compiler. Interrupt handlers are one key area worthy of a closer inspection.

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