Raspberry Pi
  • Introduction
  • Raspberry Pi
    • Cover
    • Raspberry Pi
    • Documentation
      • Embedded Linux Wiki
      • Adafruit
    • Education
      • HelloWorld
      • HackSpace
      • MagPi
    • Raspberry Pi Foundation
    • Sandbox
  • Embedded Linux
    • Introduction
    • Initialization
      • System Information
      • Kernel Ring Buffer
      • Root Directory
      • User Directory
      • Kernel Modules
      • Filesystem
        • DebugFs
        • SysFs
        • ProcFs
        • TmpFs
      • Memory
      • Processes
      • Interfaces
      • Software Configuration Tool
    • Subsystem
      • Peripheral I/O
        • GPIO
        • PWM
        • I2C
        • SPI
        • UART
      • Bluetooth
  • Services
    • Docker
    • Home Assistant
  • XunanKab
    • Untitled
  • Bitol
    • Untitled
Powered by GitBook
On this page
  1. Embedded Linux
  2. Subsystem

Peripheral I/O

PreviousSubsystemNextGPIO

Last updated 7 years ago

Peripheral I/O allows to communicate with sensors and actuators using industry standard protocols and interfaces.

  • General Purpose Input/Output (GPIO)

  • Pulse Width Modulation (PWM)

  • Serial Communication

    • I2C

    • SPI

    • UART

Links

Pin Muxing

Many modern microcontroller have a cool feature: Pin Muxing. What it means is that I can ‘mux’ the pins for different purposes: such as I can use a SPI or I2C pin as GPIO (General Purpose Pin) or vice versa. In an ideal world, I would be able to ‘route’ or ‘mux’ pins freely around. In practice these ‘way switches’ are more or less limited.

Raspberry Pi Pinout
Android Things Raspberry Pi I/O
Reference