Download the PHP package chickentikkamasala/gpio without Composer

GPIO manager

requires testing

The GPIO manager is designed to house your hardware environment setup and allow you to manager and interact with the hardware.

The GPIO manager comes with a Laravel bridged service provider for easy integration with Laravel.

The GPIO class requires gpio to be installed

Installing into laravel

Add the package to your application via composer

Add the event listener to your Event Service Provider

The above is for recaching the GPIO manager after a request to prevent redeclaration of the manager and resetting everything to their default value.

If you run your application and alter your environment setup, you may want to run php artisan cache:clear to clear the cached setup.

Publish the vendor to get the config files

Example setup

Testing with the command line

Turn the redled on pin 1 on full

List all GPIO pin input from your setup

This will output an array of all the GPIOs setup with the manager

Creating a new connection

Alternatively to config setup you can call the create function to add new connections.

The manager maps your named connections as parameters as shown above. When reading pins we can use the same method with the parameters to get the result

Mapping also applies to the values 'OFF' and 'ON' where PWM expects 1023 as max and write expect 1. 'OFF' will equal to 0.

Custom GPIO Classes/Modes

You can however add your own GPIO modes/classes in 2 ways.

First being

Another method is to use the registerMode function to register the mode type for the manager so you can do something like this

Our GPIO config array in app/gpio.php

Terminal functions

• gpio:set redled 500 => set red LED to 500
• gpio:get sensor => print the sensor reading
• gpio:list => list all connections
• gpio:function redled increment 1023 1000 => call the increment function with the options (options needs implementing)
• gpio:listen sensor --onChange => prints the state of the sensor (onChange option to only print if value has changed else consistently print incoming value)

Available default modes

• PWM => for incrementing the voltage between 0 and max
• Awrite
• ARead
• Write => for writing to pins either OFF or ON (0v or max voltage)
• Read => for reading pins either OFF or ON

Value conversions

You may remember seeing (if you've ever used an arduino) values being set as HIGH or LOW. You can do this with the GPIO and depending on it's mode it will automatically fix your maximum value.

Getting the GPIO class out of the manager

You can get the class out of the manager if you wish using

PWM functions

In PWM GPIO I have added 2 function for incrementing and decrementing for incrementing/decrementing to a value within an interval.

GPIO Options

If you see http://wiringpi.com/the-gpio-utility/ there is a usage section. These options are available to pass to the GPIOManager like so (example to use BCM pins):

An extremely handy pin map https://pinout.xyz/

Default GPIO value

Coming soon

• Symfony bridge
• mapping values from 'low' to 'high' (for ESCs for example a pwm value of 60 is 0. For servos we may want to map 0 - 1023 to something like 0 - 180 degrees where a 'high' of 1023 = 180 degrees)
• exceptions for command errors