rpi_gpio is a Dart package for accessing the Raspberry Pi GPIO pins.
The Gpio library provides the API for accessing the various General Purpose I/O pins on the Raspberry Pi.
RpiGpio accesses the GPIO pins using a native library written in C. For security reasons, authors cannot publish binary content to pub.dartlang.org, so there are some extra steps necessary to compile the native library on the RPi before this package can be used. These two steps must be performed when you install and each time you upgrade the rpi_gpio package.
- Activate the rpi_gpio package using the pub global command.
pub global activate rpi_gpio
- From your application directory (the application that references the rpi_gpio package) run the following command to build the native library
pub global run rpi_gpio:build_lib
pub global activate makes the Dart scripts in the rpi_gpio/bin directory runnable from the command line. pub global run rpi_gpio:build_lib runs the rpi_gpio/bin/build_lib.dart program which in turn calls the build_lib script to compile the native librpi_gpio_ext.so library for the rpi_gpio package.
Blinking an LED.
Responding to a button press by turning on an LED.
The example is structured such that the example test can inject a mock gpio to facilitate testing and allow test execution on platforms other than the Raspberry Pi.