Applying C For The Iot With Linux
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Applying C For The Iot With Linux
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Author : Harry Fairhead
language : en
Publisher:
Release Date : 2019-05-29
Applying C For The Iot With Linux written by Harry Fairhead and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-05-29 with categories.
Applying C is the book you need if you are programming for Single Board Computers (SBCs) that run Linux, or if you do any coding in C that interacts with the hardware. As there isn't a good name for this body of knowledge, it isn't easy to find a single source for it. This book gathers together all of these low-level, hardware-oriented and often hardware-specific ideas. As such it is a moderately advanced book. This is not to say that it is difficult, but it does presuppose that you already know how to program in C and that you know the basic idioms of C. Starting off from the very simple task of making a program run automatically, we look at how your program works with user-mode Linux. If you are working with hardware, arithmetic cannot be ignored and separate chapters are devoted to integer, fixed-point and floating-point arithmetic. Equally, to handle I/O you need to have a good grasp of files and the pseudo file system. The dev/mem file coupled with memory-mapped files makes it possible to work with raw memory without leaving user mode. Sockets are general-purpose way of communicating over networks and similar infrastructure and here the focus is on sending data over the internet and for this we build a web client and a server. Next we consider graphics, which you might find unusual in a book on small systems, but today even small systems have GPUs and graphics comes as standard. It is common to think of adding low-cost output devices such as 7-segment displays to IoT devices, but with low cost HDMI/DVI displays available it becomes cost effective to simply use the built-in graphics hardware. After this we turn to the idea of multi-tasking using Pthreads. As well as looking at threads, we consider locking, using mutex and condition variables, and scheduling. Although interrupts don't exist in user-mode Linux, we can get very close using poll and threading. Now that multiple cores are a feature of even low-cost SBC, in later chapters we cover managing cores, look at C11's atomics and introduce its memory models and barriers. Finally we take a short look at how to mix assembler with C. Harry Fairhead has a hardware background and, having worked with microprocessors and electronics in general, for many years, he is an enthusiastic proponent of the IoT. He is the author of Fundamental C: Getting Closer To The Machine and his other recent titles include Raspberry Pi IoT in C and Micro: bit IoT in C.
Raspberry Pi Iot In C Using Linux Drivers
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Author : Harry Fairhead
language : en
Publisher:
Release Date : 2021-02-08
Raspberry Pi Iot In C Using Linux Drivers written by Harry Fairhead and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-02-08 with Computers categories.
The Raspberry Pi makes an ideal match for the Internet of Things. To put it to good use in IoT you need two areas of expertise, electronics and programming and this presents a barrier to getting started. However, there is an overlooked route that can provide a shortcut. Pi OS, the Raspberry Pi's operating system is Linux based and Linux drivers are available for many off-the-shelf IoT devices. These provide a very easy-to-use, high-level way of working. The problem that this book solves is that there is very little documentation to help you get started. In it Harry Fairhead explains the principles so that you can tackle new devices and he also guides you through of using external hardware via standard Linux drivers. Throughout this book you will find a practical approach to understanding electronic circuits and datasheets and translating this to code, specifically using the C programming language. The main reason for choosing C is speed, a crucial factor when you are writing programs to communicate with the outside world and if you are familiar with another programming language, C shouldn't be hard to pick up. After a quick tour of the Raspberry Pi ecosystem, Visual Studio Code (VS Code) and how it can be used to develop remotely, is introduced. The first IoT program anyone writes is "blinky" to flash an LED and this book is no exception, but it might not be quite what you expect. Instead of using a GPIO line it uses the Linux LED driver - no hardware and no fuss. The GPIO isn't left out, however, as the next three chapters focus on its use via the new GPIO character driver, which replaces the old and very common sysfs GPIO driver. This is the way to do modern GPIO. A key component in any look at Linux and its relationship to hardware is the relatively new Device Tree. While most accounts of this resource are aimed at device driver writers, this one is aimed at device driver users and to this end we look at the DHT22 temperature and humidity driver. After a brief detour into some basic electronics, we look at Pulse Width Modulation supported via a driver rather than needing to be implemented using the GPIO. From here we tackle the two standard buses, I2C and SPI, first going through the basics and then looking at the two attempts to impose a higher organization, the hardware monitoring system, Hwmon, and Industrial I/O, IIO. The third standard bus, although generally not supported in hardware is the 1-Wire bus. This is covered in detail and even includes an introduction to using Netlink, which uses the sockets API to send messages to and from the kernel to access the driver. The final chapter takes things to the next level and considers creating your own custom overlays by writing fragments to the device tree. Harry Fairhead has worked with microprocessors, and electronics in general, for many years and is an enthusiastic proponent of the IoT. He is the author of Raspberry Pi IoT in C, which has recently been republished in its second edition, updated for Raspberry Pi 4 and co-author of Raspberry Pi IoT in Python Using GPIO Zero. His other recent books include Micro: bit IoT in C, Fundamental C: Getting Closer To The Machine and Applying C For The IoT With Linux.
Raspberry Pi Compute Module 5 Iot In C
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Author : Harry Fairhead
language : en
Publisher: I/O Press
Release Date : 2025-04-11
Raspberry Pi Compute Module 5 Iot In C written by Harry Fairhead and has been published by I/O Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-04-11 with Computers categories.
The Raspberry Pi Compute Module 5, CM5, is designed specifically to be used in IoT and embedded applications, but differs considerably from other IoT devices you might be familiar with. The key difference is that it has enough power to run an operating system, usually Linux. This makes it ideal for use in complex IoT scenarios requiring access to sensors and actuators and running multiple programs at the same time, but this is made difficult due to a lack of documentation. The problems are exacerbated by the use of the RP1 chip to implement the CM5's peripherals which means it doesn't work with the usual IoT libraries such as Wiring Pi, bcm2835, pigpio and so on. This book demonstrates how to interact with the hardware both using Linux drivers, the accepted way of accessing external devices, and via Gpio5, a new open source IoT library specifically for the Raspberry Pi 5 and CM5, that provides direct access to the CM5's hardware, with functions for working with GPIO, PWM, I2C, SPI and more. Discovering, installing and using drivers is the topic of early chapters of this book. Having seen how to work with drivers we move on to direct access to the hardware via the Gpio5 library, which is developed and enhanced throughout the book. Next comes a lightning tour of the electronics needed for simple IoT applications. This is followed by a digression into the Device Tree and overlays, using the DHT22 temperature and humidity sensor as a practical example, before tackling PWM both via a driver and directly using Gpio5. The same treatment is applied to the two standard buses, I2C and SPI and also the 1-wire bus. We then look at two attempts to impose a higher organization, the hardware monitoring system, hwmon, and Industrial I/O, IIO. We next come to the PIO, the Programmable Input Output, first introduced by the Raspberry Pi Pico, a unique way to interface the CM5 to the outside world without the need to use the CPU. After covering the basics, we look at three examples of the most sophisticated PIO programs you are likely to encounter. The penultimate chapter takes drivers to the next level, showing you how to create your own custom overlays by writing fragments of the device tree, and the final chapter is about advanced scheduling and dealing with problems encountered in running a real-time system. Harry Fairhead has worked with microprocessors and electronics for many years and is an enthusiastic proponent of the IoT. C is his programming language of choice and he is the author of Fundamental C: Getting Closer To The Machine and Applying C For The IoT With Linux. His Raspberry Pi books include Raspberry Pi 5 IoT In C: Drivers and Gpio5, the companion volume to this book, Raspberry Pi IoT In C, 3rd Ed; Raspberry Pi IoT in C With Linux Drivers, 2nd Ed and Programming the Raspberry Pi Pico/W in C, 2nd Ed.
Raspberry Pi Iot In Python Using Linux Drivers 2nd Edition
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Author : Mike James
language : en
Publisher: I/O Press
Release Date : 2024-01-23
Raspberry Pi Iot In Python Using Linux Drivers 2nd Edition written by Mike James and has been published by I/O Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-01-23 with Computers categories.
The Raspberry Pi makes an ideal match for the Internet of Things. To put it to good use in IoT you need two areas of expertise, electronics and programming, and this presents a barrier to getting started. However, there is an overlooked route that can provide a shortcut. Pi OS, the Raspberry Pi's operating system, is Linux- based and Linux drivers are available for many off-the-shelf IoT devices. Using Linux drivers saves the effort of implementing low-level code and has the advantage of working the same on all versions of the Pi, including the recently launched Pi 5 which isn't hardware compatible with earlier versions. This Second Edition has been updated to cover the Pi 5 and also the Pi Zero 2W, which is an ideal candidate for use in IoT projects. It has also been updated to use the latest versions of Pi OS, Bullseye and Bookworm. Throughout this book you will find a practical approach to understanding electronic circuits and datasheets and translating this to code, specifically using Python and VS Code. The first IoT program anyone writes is "Blinky" to flash an LED and this book is no exception, but it might not be quite what you expect. Instead of using a GPIO line driver, it uses the Linux LED driver. The GPIO isn't left out, however, as the next three chapters focus on its use via the GPIO character driver, which replaces the old, but very common, sysfs GPIO driver. This is the way to do modern GPIO. A key component in any look at Linux and its relationship to hardware is the relatively new Device Tree. While most accounts of this resource are aimed at device driver writers, this one is aimed at device driver users and to this end we look at several devices, including the DHT22 temperature and humidity sensor. After a brief detour into some basic electronics, we see how Pulse Width Modulation is supported via a driver. From here we tackle the two standard buses, I2C and SPI, first going through the basics and then looking at the two attempts to impose a higher organization, the hardware monitoring system, hwmon, and Industrial I/O, IIO. The 1-Wire bus is also covered in detail. The final chapter takes things to the next level and considers creating your own custom overlays by writing fragments to the device tree. Harry Fairhead's other books include Applying C For The IoT With Linux; Programming the Raspberry Pi Pico/W, 2nd Ed, Raspberry Pi IoT in C, 3rd Ed, Raspberry Pi IoT in C Using Linux Drivers, 2nd Ed, Programming the Raspberry Pi Pico/W, 2nd Ed and Programming the ESP32 in MicroPython. Mike James is the author of the Programmer's Python: Something Completely Different series of books and several other programming and computer science titles in the I Programmer Library.
Raspberry Pi 5 Iot In C
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Author : Harry Fairhead
language : en
Publisher: I/O Press
Release Date : 2025-03-03
Raspberry Pi 5 Iot In C written by Harry Fairhead and has been published by I/O Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-03-03 with Computers categories.
The Raspberry Pi 5 is a very capable Linux computer, ideal for use in complex IoT scenarios requiring access to sensors and actuators and running multiple programs at the same time, but the problem is that its hardware is poorly documented. This book demonstrates how to interact with the hardware using Linux drivers and via Gpio5, a new open source IoT library that provides direct access to the Pi 5's hardware. As the Pi 5 uses the RP1 chip to implement its peripherals, it does not work with the usual IoT libraries such as Wiring Pi, bcm2835, pigpio and so on. Gpio5, is designed to replace them and provide direct access to GPIO, PWM, I2C, SPI and more. This makes the Pi 5 much more capable of IoT applications. With Linux, the accepted way to access the outside world and other devices is to use drivers. Discovering, installing and using drivers is the topic of early chapters of this book. Having seen how to work with drivers we move on to direct access to the hardware via the Gpio5 library, which is developed and enhanced throughout the book. Next comes a lightning tour of the electronics needed for simple IoT applications. This is followed by a digression into the Device Tree and overlays using the DHT22 temperature and humidity sensor as a practical example before tackling PWM both via a driver and directly using Gpio5. From here we tackle the two standard buses, I2C and SPI, in a set of chapters that take us through the basics using both drivers and direct access via Gpio5. We then look at two attempts to impose a higher organization, the hardware monitoring system, hwmon, and Industrial I/O, IIO. The penultimate chapter introduces the PIO first introduced by the Raspberry Pi Pico, a unique way to interface the Pi 5 to the outside world without the need to use the CPU. This goes over the basics and ends with three examples of the most sophisticated PIO programs you are likely to encounter. The final chapter takes drivers to the next level, showing you how to create your own custom overlays by writing fragments of the Device Tree. Harry Fairhead has worked with microprocessors and electronics for many years and is an enthusiastic proponent of the IoT. C is his programming language of choice and he is the author of Fundamental C: Getting Closer To The Machine and Applying C For The IoT With Linux. His latest Raspberry Pi books are Raspberry Pi IoT In C, 3rd Ed; Raspberry Pi IoT in C With Linux Drivers, 2nd Ed and Programming the Raspberry Pi Pico/W in C, 2nd Ed.
Raspberry Pi Iot In C
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Author : Harry Fairhead
language : en
Publisher:
Release Date : 2020-10-03
Raspberry Pi Iot In C written by Harry Fairhead and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-10-03 with Computers categories.
The Raspberry Pi makes an ideal match for the Internet of Things. But to put it to good use in IoT you need two areas of expertise, electronics and programming and, because of the way hardware and software engineering tend to occupy separate niches, you may need help with combining the two. This book teaches you to think like an IoT programmer. In Raspberry Pi IoT in C you will find a practical approach to understanding electronic circuits and datasheets and translating this to code, specifically using the C programming language. The main reason for choosing C is speed, a crucial factor when you are writing programs to communicate with the outside world. If you are familiar with another programming language, C shouldn't be hard to pick up. This Second Edition has been brought up-to-date and focuses mainly on the Pi 4 and the Pi Zero. There is new material on the recently introduced GPIO character driver and using the Pi 4's additional ports and scheduling. Although NetBeans is used to develop programs, VS Code is now considered an alternative remote development environment and all the book's code, which is available for download, has been tested with VS Code. The main idea in this book is to not simply install a driver, but to work directly with the hardware using the Raspberry Pi's GPIO (General Purpose Input Output) to connect with off-the-shelf sensors. It explains how to use its standard output with custom protocols, including an in-depth exposition of the 1-wire bus. You will also discover how to put the Internet into the IoT using sockets. After reading this book you will be in a better position to tackle interfacing anything-with-anything without the need for custom drivers and prebuilt hardware modules. Harry Fairhead has worked with microprocessors and electronics in general for many years and is an enthusiastic proponent of the IoT. As well as being the Editor of IoT-Programmer.com, he is a regular contributor to I-Programmer.info, where he covers all aspects of hardware. His other recent books include Applying C For The IoT With Linux as well as Fundamental C: Getting Closer To The Machine and Micro: bit IoT in C.
Raspberry Pi Iot In Python Using Linux Drivers
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Author : Mike James
language : en
Publisher: I/O Press
Release Date : 2021-03-14
Raspberry Pi Iot In Python Using Linux Drivers written by Mike James and has been published by I/O Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-03-14 with categories.
The Raspberry Pi makes an ideal match for the Internet of Things. To put it to good use in IoT you need two areas of expertise, electronics and programming, and this presents a barrier to getting started. However, there is an overlooked route that can provide a shortcut. Pi OS, the Raspberry Pi's operating system, is Linux- based and Linux drivers are available for many off-the-shelf IoT devices. These provide a very easy-to-use, high-level, way of working. The problem that this book solves is that there is very little documentation to help you get started. Throughout this book you will find a practical approach to understanding electronic circuits and datasheets and translating this to code, specifically using Python. Python is an excellent language for learning about the IoT or physical computing. It might not be as fast as C, but it is much easier to use for complex data processing. The emphasis in this book is on understanding how things work so that you can apply your new knowledge to your own projects. You can use any Python development system that you know, but the programs in the book have been developed using Visual Studio Code and its remote development facilities. The first IoT program anyone writes is "Blinky" to flash an LED and this book is no exception, but it might not be quite what you expect. Instead of using a GPIO line, it uses the Linux LED driver - no hardware and no fuss. The GPIO isn't left out, however, as the next three chapters focus on its use via the new GPIO character driver, which replaces the old and very common sysfs GPIO driver. This is the way to do modern GPIO. A key component in any look at Linux and its relationship to hardware is the relatively new Device Tree. While most accounts of this resource are aimed at device driver writers, this one is aimed at device driver users and to this end we look at several devices, including the DHT22 temperature and humidity sensor. After a brief detour into some basic electronics, we see how Pulse Width Modulation is supported via a driver. From here we tackle the two standard buses, I2C and SPI, first going through the basics and then looking at the two attempts to impose a higher organization, the hardware monitoring system, Hwmon, and Industrial I/O, IIO. The third standard bus, although generally not supported in hardware, is the 1-Wire bus. This is covered in detail and even includes an introduction to using Netlink, which uses the sockets API to send messages to and from the kernel to access the driver. The final chapter takes things to the next level and considers creating your own custom overlays by writing fragments to the device tree. This is the second title jointly authored by Harry Fairhead and Mike James and can be seen as the alternative approach to that outlined in Raspberry Pi IoT In Python Using GPIO Zero. For both books, Harry brings his expertise in electronics and the IoT and Mike contributes the Python code. Harry Fairhead is the author of other IoT-related titles including Raspberry Pi IoT in C, Second Edition; Micro: bit IoT in C, Second Edition; Applying C For The IoT With Linux and Fundamental C: Getting Closer To The Machine. Mike James is the author of Programmer's Python: Everything is an Object and other programming and computer science titles in the I Programmer Library.
Design Of Secure Iot Systems A Practical Approach Across Industries
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Author : Sumeet Arora
language : en
Publisher: McGraw Hill Professional
Release Date : 2021-07-16
Design Of Secure Iot Systems A Practical Approach Across Industries written by Sumeet Arora and has been published by McGraw Hill Professional this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-07-16 with Technology & Engineering categories.
Build secure IoT devices and networks for a wide range of industries This practical guide fully explains the technology behind the Internet of Things, machine-to-machine communication, and automation. Written by a team of experts from leading firms, Design of Secure IoT Systems: A Practical Approach Across Industries covers all aspects of system architecture, protocols, requirements, and design. You will discover how to design and engineer IoT devices and networks with trust and security. The book features industrial automation case studies and simulation examples from a wide range of fields. Coverage includes: IoT architecture and technology fundamentals Connected machines and M2M communication Network protocols and architecture IoT hardware design fundamentals WAN, IP, and MAC configuration IoT data systems design Designing with trust and security Data security policies and regulations Cybersecurity threats and risks Automation Use cases across industries Industry compliance and standards
Comptia Security Certification Practice Exams Fourth Edition Exam Sy0 601
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Author : Daniel Lachance
language : en
Publisher: McGraw Hill Professional
Release Date : 2021-01-01
Comptia Security Certification Practice Exams Fourth Edition Exam Sy0 601 written by Daniel Lachance and has been published by McGraw Hill Professional this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-01-01 with Computers categories.
This up-to-date study aid contains hundreds of accurate practice questions and detailed answer explanations CompTIA Security+TM Certification Practice Exams, Fourth Edition (Exam SY0-601) is filled with more than 1000 realistic practice questions—including new performance-based questions—to prepare you for this challenging exam. To help you understand the material, in-depth explanations of both the correct and incorrect answers are included for every question. This practical guide covers all official objectives for Exam SY0-601 and is the perfect companion to CompTIA Security+ Certification Study Guide, Fourth Edition. Covers all exam topics, including: Networking Basics and Terminology Introduction to Security Terminology Security Policies and Standards Types of Attacks Vulnerabilities and Threats Mitigating Security Threats Implementing Host-Based Security Securing the Network Infrastructure Wireless Networking and Security Authentication Authorization and Access Control Introduction to Cryptography Managing a Public Key Infrastructure Physical Security Risk Analysis Disaster Recovery and Business Continuity Understanding Monitoring and Auditing Security Assessments and Audits Incident Response and Computer Forensics Online content includes: Test engine that provides full-length practice exams and customized quizzes by chapter or by exam domain Interactive performance-based question sample
Comptia Security Certification Bundle Fourth Edition Exam Sy0 601
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Author : Glen E. Clarke
language : en
Publisher: McGraw Hill Professional
Release Date : 2021-11-05
Comptia Security Certification Bundle Fourth Edition Exam Sy0 601 written by Glen E. Clarke and has been published by McGraw Hill Professional this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-11-05 with Computers categories.
This money-saving collection covers every objective for the CompTIA Security+ exam and contains exclusive bonus content This fully updated test preparation bundle covers every topic on the current version of the CompTIA Security+ exam. Designed to be the ultimate self-study resource, this collection includes the current editions of CompTIA Security+ Certification Study Guide and CompTIA Security+ Certification Practice Exams along with exclusive online content―all at a discount of 12% off of the suggested retail price. CompTIA Security+ Certification Bundle, Fourth Edition (Exam SY0-601) provides you with a wide variety of exam-focused preparation resources. Bonus content includes a quick review guide, a security audit checklist, and a URL reference list. Online content from features author-led video training, lab simulations, and a customizable test engine that contains four complete practice exams. Online content includes 500 additional practice questions, 3+ hours of training videos, 50+ lab exercises, and more Contains a bonus quick review guide, security audit checklist, and URL reference list Includes a 10% off the exam voucher coupon—a $35 value