PedalsJoystick.ino

/*
 *  Project     Sim Racing Library for Arduino
 *  @author     David Madison
 *  @link       github.com/dmadison/Sim-Racing-Arduino
 *  @license    LGPLv3 - Copyright (c) 2022 David Madison
 *
 *  This file is part of the Sim Racing Library for Arduino.
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

 /**
 * @details Emulates the pedals as a joystick over USB.
 * @example PedalsJoystick.ino
 */

// This example requires the Arduino Joystick Library
// Download Here: https://github.com/MHeironimus/ArduinoJoystickLibrary

#include <SimRacing.h>
#include <Joystick.h>

const int Pin_Gas    = A2;
const int Pin_Brake  = A1;
const int Pin_Clutch = A0;

SimRacing::LogitechPedals pedals(Pin_Gas, Pin_Brake, Pin_Clutch);
//SimRacing::LogitechPedals pedals(PEDAL_SHIELD_V1_PINS);

Joystick_ Joystick(
	JOYSTICK_DEFAULT_REPORT_ID,          // default report (no additional pages)
	JOYSTICK_TYPE_JOYSTICK,              // so that this shows up in Windows joystick manager
	0,                                   // number of buttons (none)
	0,                                   // number of hat switches (none)
	false, false,                        // no X and Y axes
	pedals.hasPedal(SimRacing::Clutch),  // include Z axis for the clutch pedal
	pedals.hasPedal(SimRacing::Brake),   // include Rx axis for the brake pedal
	pedals.hasPedal(SimRacing::Gas),     // include Ry axis for the gas pedal
	false, false, false, false, false, false);  // no other axes

const int ADC_Max = 1023;  // max value of the analog inputs, 10-bit on AVR boards
const bool AlwaysSend = false;  // override the position checks, *always* send data constantly


void setup() {
	pedals.begin();  // initialize pedal pins

	// if you have one, your calibration line should go here
	
	Joystick.begin(false);  // 'false' to disable auto-send

	Joystick.setZAxisRange(0, ADC_Max);
	Joystick.setRxAxisRange(0, ADC_Max);
	Joystick.setRyAxisRange(0, ADC_Max);

	updateJoystick();  // send initial state
}

void loop() {
	pedals.update();

	if (pedals.positionChanged() || AlwaysSend) {
		updateJoystick();
	}
}

void updateJoystick() {
	if (pedals.hasPedal(SimRacing::Gas)) {
		int gasPedal = pedals.getPosition(SimRacing::Gas, 0, ADC_Max);
		Joystick.setRyAxis(gasPedal);
	}

	if (pedals.hasPedal(SimRacing::Brake)) {
		int brakePedal = pedals.getPosition(SimRacing::Brake, 0, ADC_Max);
		Joystick.setRxAxis(brakePedal);
	}

	if (pedals.hasPedal(SimRacing::Clutch)) {
		int clutchPedal = pedals.getPosition(SimRacing::Clutch, 0, ADC_Max);
		Joystick.setZAxis(clutchPedal);
	}

	Joystick.sendState();
}