树莓派40脚定义

Raspberry Pi 40-pin GPIO header

The Raspberry Pi 40-pin GPIO header is a key feature of the popular single-board computer. It provides a way for the Pi to communicate with external hardware and allows users to create a wide range of projects and applications. The header consists of 40 pins arranged in two rows, with each pin serving a specific function.

GPIO pins

The GPIO (General Purpose Input Output) pins on the Raspberry Pi are used to control and communicate with external hardware. There are 26 GPIO pins on the 40-pin header, each of which can be configured as either an input or an output. They can be used to control LEDs, motors, sensors, and other devices.

SPI

SPI (Serial Peripheral Interface) is a communication protocol used to transfer data between devices. The Raspberry Pi has two SPI interfaces, one of which is available on the 40-pin header. This interface can be used to communicate with SPI devices such as sensors, displays, and other peripherals.

I2C

I2C (Inter-Integrated Circuit) is another communication protocol commonly used in embedded systems. The Raspberry Pi has two I2C interfaces, one of which is available on the 40-pin header. This interface can be used to communicate with I2C devices such as temperature sensors, accelerometers, and more.

UART

UART (Universal Asynchronous Receiver/Transmitter) is a commonly used communication interface for serial data transfer. The Raspberry Pi has two UART interfaces, one of which is available on the 40-pin header. This interface can be used to communicate with serial devices such as GPS modules, Bluetooth modules, and more.

Conclusion

The Raspberry Pi 40-pin GPIO header provides a wide range of functionality that allows users to interface with a wide variety of devices and create complex projects. The GPIO, SPI, I2C, and UART interfaces offer a flexible way to communicate with external hardware, and the possibilities for creative projects with the Pi are practically endless.