GPIO class using Linux sysfs.

>> source code / schematic

Overview

This is an implementation of the GPIO class library for Linux.
Follows mruby, mruby/c common I/O API guidelines.

This library uses the Linux sysfs.
Works well on 32-bit and 64-bit OS.

Installation

$ gem install mruby-sysfs-gpio

Features

• Configure the pin as an input or output. (if hardware allows)
• Has an extension that allows you to define code to be executed when the input changes.

Operation check target

• Raspberry Pi 4
• Armadillo-IoT G3

Usage

about RaspberryPi...

# Flash LED a.k.a. ElChika (in japanese)
# Connect Pin #37 (GPIO26) to LED.

require "mruby/gpio"   # or "mruby/gpio/sysfs"

led = GPIO.new(26, GPIO::OUT)
while true
  led.write( 1 )
  sleep 1
  led.write( 0 )
  sleep 1
end

Other case, see original guidelines.

https://github.com/mruby/microcontroller-peripheral-interface-guide/blob/main/mruby_io_GPIO_en.md

Licence

BSD 3-Clause License. see LICENSE file.