| Raspberry Pi 5 IoT In C (I/O Press) |
| Wednesday, 05 March 2025 | |||
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This book demonstrates how to interact with the hardware using Linux drivers and via Gpio5, a new open source IoT library created by Harry Fairhead 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. <ASIN:1871962943> The book also looks at the electronics needed for simple IoT applications. Harry also describes 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 two standard buses, I2C and SPI, are covered in a set of chapters on using both drivers and direct access via Gpio5. The book also looks at 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, and 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. Author: Harry Fairhead
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