PedalsJoystick.ino

Emulates the pedals as a joystick over USB.

/*
 *  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/>.
 */
 
// 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();
}