C Programming on Raspberry Pi - Develop innovative hardware-based projects in C

Description

The Raspberry Pi has traditionally been programmed using Python. Although this is a very powerful language, many programmers may not be familiar with it. C on the other hand is perhaps the most commonly used programming language and all embedded microcontrollers can be programmed using it. ---------------------------------------- The C language is taught in most technical colleges and universities and almost all engineering students are familiar with using it with their projects. This book is about using the Raspberry Pi with C to develop a range of hardware-based projects. Two of the most popular C libraries, wiringPi and pigpio are used. ------------------------------------------ The book starts with an introduction to C and most students and newcomers will find this chapter invaluable. Many projects are provided in the book, including using Wi-Fi and Bluetooth to establish communication with smartphones. Many sensor and hardware-based projects are included. Both wiringPi and pigpio libraries are used in all projects. Complete program listings are given with full explanations. All projects have been fully tested and work. ------------------------------------------ The following hardware-based projects are provided in the book: - Using sensors - Using LCDs - I²C and SPI buses - Serial communication - Multitasking - External and timer interrupts - Using Wi-Fi - Webservers - Communicating with smartphones - Using Bluetooth - Sending data to the cloud -------------------------------------- Program listings of all Raspberry Pi projects developed in this book are available on the Elektor website. Readers can download and use these programs in their projects. Alternatively, they can customize them to suit their applications. Chapter 1 ● Installing the Operating System on Raspberry Pi 1.1 ● Overview 1.2 ● Raspbian Buster installation steps on Raspberry Pi 4 1.3 ● Using networked connection 1.4 ● Remote access 1.5 ● Using Putty 1.5.1 ● Configuring Putty 1.6 ● Remote access of the Desktop 1.7 ● Static IP address 1.8 ● Summary Chapter 2 ● Raspberry Pi Program Development 2.1 ● Overview 2.2 ● The nano text editor 2.3 ● Example project 2.4 ● Creating and running a Python program on Raspberry Pi 2.5 ● Creating and running a C program on Raspberry Pi 2.6 ● Summary Chapter 3 ● C Programming for Raspberry Pi 3.1 ● Overview 3.2 ● The C Language 3.2.1 ● Variables 3.2.2 ● Screen output and keyboard input 3.2.3 ● Comparison 3.2.4 ● Operators 3.2.5 ● Auto increment/decrement operators 3.2.6 ● Logical operators 3.2.7 ● Flow control 3.2.8 ● Arrays 3.2.9 ● String variables 3.2.10 ● Arithmetic functions 3.2.11 ● String functions 3.2.12 ● Character macros 3.2.13 ● Alternative numeric input 3.2.14 ● User functions 3.2.15 ● File processing 3.2.16 ● Structures 3.2.17 ● Unions 3.2.18 ● Pointers 3.3 ● Summary Chapter 4 ● Hardware Programming using C 4.1 ● Overview 4.2 ● The general purpose input-output ports (GPIO) 4.3 ● Interfacing with GPIO 4.3.1 ● Loads requiring small currents 4.3.2 ● Loads requiring higher currents 4.3.3 ● Using relays 4.4 ● Project 1: Flashing LED - compilers available 4.4.1 ● Using the pigpio library 4.4.2 ● Using the wiringPi library 4.4.3 ● Other C libraries/compilers for Raspberry Pi 4.5 ● Using the Geany editor 4.6 ● The hardware 4.7 ● Summary Chapter 5 ● Hardware Projects using C 5.1 ● Overview 5.2 ● Project 1 - Rotating LEDs 5.3 ● Project 2 - Christmas lights 5.4 ● Project 3 - Binary up counter with LEDs 5.5 ● Project 4 - Binary up/down counter with LEDs 5.6 ● Project 5 - LED dice 5.7 ● Project 6 - LED colour wand 5.8 ● Project 7 - Changing the brightness of an LED 5.9 ● Project 8 - Generating random sounds using a buzzer 5.10 ● Project 9 - Display temperature and relative humidity 5.11 ● Project 10 - ON/OFF temperature controller 5.12 ● Summary Chapter 6 ● LCD Projects 6.1 ● Overview 6.2 ● HD44780 LCD module 6.3 ● Project 1 - Displaying text 6.4 ● Project 2 - Second counter 6.5 ● Project 3 - Creating a custom character 6.6 ● Project 4 - Creating multiple custom characters 6.7 ● Project 5 - Displaying current date and time 6.8 ● Project 6 - Displaying the temperature and humidity 6.9 ● Summary Chapter 7 ● I2C Bus Interface 7.1 ● Overview 7.2 ● The I2C Bus 7.3 ● Project 1 - Port expander 7.4 ● Project 2 - EEPROM memory 7.5 ● Project 3 - TMP102 temperature display 7.6 ● Project 4 - I2C LCD 7.7 ● Project 5 - Using the pigpio library with I2C - TMP102 temperature display 7.8 ● Summary Chapter 8 ● SPI Bus Interface 8.1 ● Overview 8.2 ● Raspberry Pi SPI pins 8.3 ● Project 1 - Port expander 8.4 ● Summary Chapter 9 ● Using Analogue-to-Digital Converters (ADCs) 9.1 ● Overview 9.2 ● Project 1 - Analogue temperature sensor thermometer 9.3 ● Summary Chapter 10 ● Using Digital-to-Analogue Converters (DACs) 10.1 ● Overview 10.2 ● The MCP4921 DAC 10.3 ● Project 1 - Generating square wave signal with any peak voltage 10.4 ● Project 2 - Generating sawtooth wave signal 10.5 ● Summary Chapter 11 ● Using Serial Communication 11.1 ● Overview 11.2 ● Raspberry Pi serial port 11.3 ● Project 1 - Serial communication between Raspberry Pi and Arduino Uno 11.4 ● Summary Chapter 12 ● Other Useful Functions wiringPi 12.1 ● Overview 12.2 ● Project 1 - Using external interrupts - event counter 12.3 ● Project 2 - Using the tone library - generating 1kHz signal 12.4 ● Project 3 - Using the tone library - sweep frequency tone generation 12.5 ● Project 4 - Using the tone library - reading the frequency from the keyboard 12.6 ● Project 5 - Using the tone library - melody maker 12.7 ● Timing library 12.8 ● Multitasking threads 12.9 ● Project 6 - Multi-threading - flashing 3 LEDs at different rates 12.10 ● Project 7 - Multi-threading - Two-digit 7-segment LED counter 12.11 ● Hardware PWM 12.12 ● GPIO utility 12.13 ● Support for other chips and add-on boards 12.14 ● Summary Chapter 13 ● Other Useful Functions - pigpio 13.1 ● Overview 13.2 ● Project 1 - Using external interrupts - event counter 13.3 ● Timing 13.4 ● Timer interrupts 13.5 ● Project 2 - Using timer interrupts - flashing LED 13.6 ● Project 3 - Using timer interrupts - 2 digit 7-segment LED counter 13.7 ● Project 4 - Multi-threading - flashing 3 LEDs at different rates 13.8 ● Project 5 - Hardware PWM- generate 1kHz PWM wave with hardware 13.9 ● File handling 13.10 ● Waves 13.11 ● picscope 13.12 ● pigpiod 13.13 ● Summary Chapter 14 ● Communication over Wi-Fi 14.1 ● Overview 14.2 ● UDP and TCP/IP 14.3 ● UDP communication 14.4 ● Project 1 - Communicating with an Android smartphone using UDP (Raspberry Pi is the server) 14.5 ● Project 2 - Sending temperature readings to Android smartphone (Raspberry Pi is the server) 14.6 ● Project 3 - Communicating with an Android smartphone using UDP (Raspberry Pi is the client) 14.7 ● Project 4 - Sending time-stamped temperature readings to Android smartphone (Raspberry Pi is 14.8 ● Project 5 - Web Server application - controlling two LEDs 14.9 ● Summary Chapter 15 ● Bluetooth Communication 15.1 ● Overview 15.2 ● Project 1 - Bluetooth communication with a smartphone - sending and receiving text messages 15.3 ● Project 2 - Bluetooth communication with a smartphone - controlling two LEDs Chapter 16 ● Automatically Running Programs on Startup 16.1 ● Overview 16.2 ● Scheduling a program to run at specified times Chapter 17 ● Sending Data to the Cloud 17.1 ● Overview 17.2 ● Project - Sending temperature and humidity data to the cloud ● Index