pyController

About

This tool functions as a controller management service that allows anyone to easily integrate a bluetooth wireless PS4 controller with their personal project. While this code only works with a PS4 controller layout, there are future plans to expand this to more bluetooth controller pending popularity. The code has been verified with the following controller but should work with any bluetooth PS4 controller:

https://www.amazon.com/gp/product/B07WDK245R/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

PS4 Button Layout

Architecture

Installation

From terminal, run update:

sudo apt-get update

For Python 3 pip3 install pyController

For Python 2 pip2 install pyController

Implementation

There are three requirements needed to implement the pyController.

1. Import pyController

Import the pyController file. Importing it as ps4 will help remember this is strictly for a bluetooth ps4 button mapping.

import controller as ps4

2. Define Callbacks

The pyController exists in a thread allowing user code to execute while awaiting a controller command. When a user defined controller feature changes states, it interrupts with a callback. The callback is a functor the user defines. This function is user named and user defined. It will perform the routine that corresponds with the button mapping of the user choice.

Ex. If the user wanted an LED to turn on when Circle is pressed, than the function could be defined as follows:

def Led_Callback():
  if(Circle.pressed):
    LED1.ON()
   else:
    LED.OFF()

3. Create the controller features

The flexibility of this controller implementation means controller feautres are off by default. An interruption will only occur if the user utilizes a button, joystick, or trigger. This increases the performance of user code by minimizing uneccessary interruptions. A controller feautre is an object initialized by the ControllerFeauture class. The feature itself is an enumeration that must match the enumeration. These enumerations are hard mapped to the PS4 controller button laytout.

Buttons	Analog
CROSS	L3_LEFT
CIRCLE	L3_RIGHT
TRIANGLE	L3_UP
SQUARE	L3_DOWN
L1	L2
R1	R2
SHARE	R3_LEFT
OPTIONS	R3_RIGHT
HOME	R3_UP
L3	R3_DOWN
R3	DPAD_LEFT
	DPAD_RIGHT
	DPAD_UP
	DPAD_DOWN

Creating the controller feature object means calling the contstructor with the enumeration mapped feature and call back function pointer (functor). The following is an example that could be used with the LED function in step 1. Circle_Button = ps4.ControllerFeature(ps4.Buttons.CIRCLE, Led_Callback)

4 Create a list of the controller features

Add the objects to a list that allows the bluetooth manger to connect controller events to user defined callbacks. controller_features = [Circle_Button]

5. Create the bluetooth object

Make a bluetooth objects that passes the list of user defined controller feature objects for ControllerBlueTooth to manage. blue_tooth = ps4.ControllerBlueTooth(controller_features, interface)

6. Start the bluetooth thread

blue_tooth.start_thread()