Project #26 – Radio Frequency – Joystick Test Application – Mk13

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#DonLucElectronics #DonLuc #RadioFrequency #Bluetooth #JoystickTest #Gamepad #ESP32 #Arduino #Project #Fritzing #Programming #Electronics #Microcontrollers #Consultant

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Joystick Test Application

While experimenting with making my own controllers recently, I needed a nice visual way of testing them in Windows. As you can see it’s pretty simple and just shows a visual representation of each axis, POV and button. Currently it supports Joysticks with 8 axes, 4 POV and up to 128 buttons. I haven’t had a chance to test it with over 32 buttons so I would be interested to here from anyone who has such a device. It should work on XP upwards but I have only tested it on Windows 10 64 bit. You just need Net framework 3 and DirectX 9 to run it.

DL2304Mk01

1 x SparkFun Thing Plus – ESP32 WROOM
1 x SparkFun Joystick Shield Kit
1 x Thumb Joystick
1 x SparkFun Thumb Joystick Breakout
1 x Terminal Block Breakout FeatherWing
1 x Lithium Ion Battery – 1 Ah
1 x SparkFun Cerberus USB Cable

SparkFun Thing Plus – ESP32 WROOM

LJH – Analog A3
LJV – Analog A2
LJS – Digital 12
RJH – Analog A1
RJV – Analog A0
RJS – Digital 21
LD1 – Digital 16
LD2 – Digital 18
LD3 – Digital 19
LD4 – Digital 17
LT – Digital 5
LED – LED_BUILTIN
VIN – +3.3V
GND – GND

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DL2304Mk01p.ino

/* ***** Don Luc Electronics © *****
Software Version Information
Project #26 - Radio Frequency - Joystick Test Application - Mk13
26-13
DL2304Mk01p.ino
1 x SparkFun Thing Plus - ESP32 WROOM
1 x SparkFun Joystick Shield Kit
1 x Thumb Joystick
1 x SparkFun Thumb Joystick Breakout
1 x Terminal Block Breakout FeatherWing
1 x Lithium Ion Battery - 1 Ah
1 x SparkFun Cerberus USB Cable
*/

// Include the Library Code
// Arduino
#include <Arduino.h>
// ESP32 BLE Gamepad
#include <BleGamepad.h>

// ESP32 BLE Gamepad
BleGamepad bleGamepad;

// Left Joystick
#define LJH A3
#define LJV A2
#define LJS 12

// Right Joystick
#define RJH A1
#define RJV A0
#define RJS 21

// D-pad
#define LD1 16
#define LD2 18
#define LD3 19
#define LD4 17

// LT 
#define LT 5

// Previous Button State
int previousButton1State = HIGH;
int previousButton2State = HIGH;
int previousButton3State = HIGH;
int previousButton4State = HIGH;
int previousButton5State = HIGH;
int previousButton6State = HIGH;
int previousButton7State = HIGH;

// Number of pot samples to take (to smooth the values)
const int numberOfPotSamples = 5;
// Delay in milliseconds between pot samples
const int delayBetweenSamples = 2;
// Additional delay in milliseconds between HID reports
const int delayBetweenHIDReports = 5;
// Delay in milliseconds between button press
const int debounceDelay = 10;

// Software Version Information
String sver = "26-13";

void loop() {
  
  // Bluetooth Serial (ESP32SPP)
  isBluetooth();

}

getBluetooth.ino

// Bluetooth
// isBluetooth
void isBluetooth() {

  // ESP32 BLE Gamepad
  if(bleGamepad.isConnected()) 
  {

    // Button
    isButton();

    // Joystick
    isThumbJoystick();

  }

}

getGames.ino

// Games
// Set Inputs
void setInputs() {
  
  // Make the button line an input
  pinMode(LJS, INPUT_PULLUP);
  pinMode(RJS, INPUT_PULLUP);
  pinMode(LD1, INPUT_PULLUP);
  pinMode(LD2, INPUT_PULLUP);
  pinMode(LD3, INPUT_PULLUP);
  pinMode(LD4, INPUT_PULLUP);
  pinMode(LT, INPUT_PULLUP);
  // Initialize digital pin LED_BUILTIN as an output.
  pinMode(LED_BUILTIN, OUTPUT);
  // Turn the LED on HIGH 
  digitalWrite(LED_BUILTIN, HIGH);

}

// Button
void isButton(){
  
  // Button1 State LD1
  int currentButton1State = digitalRead(LD1);
  if (currentButton1State != previousButton1State)
  {
    if (currentButton1State == LOW)
    {
      bleGamepad.press(BUTTON_1);
    }
    else
    {
      bleGamepad.release(BUTTON_1);
    }
  }
  previousButton1State = currentButton1State;
  // Button2 State LD2
  int currentButton2State = digitalRead(LD2);

  if (currentButton2State != previousButton2State)
  {
    if (currentButton2State == LOW)
    {
      bleGamepad.press(BUTTON_2);
    }
    else
    {
      bleGamepad.release(BUTTON_2);
    }
  }
  previousButton2State = currentButton2State;

  // Button3 State LD3
  int currentButton3State = digitalRead(LD3);
  if (currentButton3State != previousButton3State)
  {
    if (currentButton3State == LOW)
    {
      bleGamepad.press(BUTTON_3);
    }
    else
    {
      bleGamepad.release(BUTTON_3);
    }
  }
  previousButton3State = currentButton3State;

  // Button4 State LD4
  int currentButton4State = digitalRead(LD4);
  if (currentButton4State != previousButton4State)
  {
    if (currentButton4State == LOW)
    {
      bleGamepad.press(BUTTON_4);
    }
    else
    {
      bleGamepad.release(BUTTON_4);
    }
  }
  previousButton4State = currentButton4State;

  // Button5 State LJS
  int currentButton5State = digitalRead(LJS);
  if (currentButton5State != previousButton5State)
  {
    if (currentButton5State == LOW)
    {
      bleGamepad.press(BUTTON_5);
    }
    else
    {
      bleGamepad.release(BUTTON_5);
    }
  }
  previousButton5State = currentButton5State;

  // Button6 State RJS
  int currentButton6State = digitalRead(RJS);
  if (currentButton6State != previousButton6State)
  {
    if (currentButton6State == LOW)
    {
      bleGamepad.press(BUTTON_6);
    }
    else
    {
      bleGamepad.release(BUTTON_6);
    }
  }
  previousButton6State = currentButton6State;

  // Button7 State LT
  int currentButton7State = digitalRead(LT);
  if (currentButton7State != previousButton7State)
  {
    if (currentButton7State == LOW)
    {
      bleGamepad.press(BUTTON_7);
    }
    else
    {
      bleGamepad.release(BUTTON_7);
    }
  }
  previousButton7State = currentButton7State;

}

getThumbJoystick.ino

// Thumb Joystick
void isThumbJoystick() {

  // Joystick LJH
  // Joystick Pot Values LJH
  int potValues[numberOfPotSamples];
  for (int i = 0 ; i < numberOfPotSamples ; i++) {
      
    potValues[i] = analogRead(LJH);
    delay(delayBetweenSamples);
    
  }
  int potValue = 0;
  for (int i = 0 ; i < numberOfPotSamples ; i++) {
      
    potValue += potValues[i];
    
  }
  // Value / Pot Samples
  potValue = potValue / numberOfPotSamples;
  // Adjusted Value
  int adjustedValue = map(potValue, 0, 4095, 32737, 0);

  // Joystick LJV
  // Joystick Pot Values LJV
  int potValues2[numberOfPotSamples];
  for (int i = 0 ; i < numberOfPotSamples ; i++) {
      
    potValues2[i] = analogRead(LJV);
    delay(delayBetweenSamples);
    
  }
  int potValue2 = 0;
  for (int i = 0 ; i < numberOfPotSamples ; i++) {
    
    potValue2 += potValues2[i];
    
  }
  // Value2 / Pot Samples
  potValue2 = potValue2 / numberOfPotSamples;
  // Adjusted Value2
  int adjustedValue2 = map(potValue2, 0, 4095, 32737, 0);

  // Joystick RJH
  // Joystick Pot Values RJH
  int potValues3[numberOfPotSamples];
  for (int i = 0 ; i < numberOfPotSamples ; i++) {
      
    potValues3[i] = analogRead(RJH);
    delay(delayBetweenSamples);
    
  }
  int potValue3 = 0;
  for (int i = 0 ; i < numberOfPotSamples ; i++) {
      
      potValue3 += potValues3[i];
      
  }
  // Value3 / Pot Samples
  potValue3 = potValue3 / numberOfPotSamples;
  // Adjusted Value3
  int adjustedValue3 = map(potValue3, 0, 4095, 32737, 0);

  // Joystick RJV
  // Joystick Pot Values RJV
  int potValues4[numberOfPotSamples];
  for (int i = 0 ; i < numberOfPotSamples ; i++) {
      
    potValues4[i] = analogRead(RJV);
    delay(delayBetweenSamples);
    
  }
  int potValue4 = 0;
  for (int i = 0 ; i < numberOfPotSamples ; i++) {
      
      potValue4 += potValues4[i];
  
  }
  // Value4 / Pot Samples
  potValue4 = potValue4 / numberOfPotSamples;
  // Adjusted Value4
  int adjustedValue4 = map(potValue4, 0, 4095, 32737, 0);

  bleGamepad.setAxes(adjustedValue, adjustedValue2, 0, 0, adjustedValue3, adjustedValue4, DPAD_CENTERED);
  delay(delayBetweenHIDReports);

  // D-pad
  // LD1
  if (digitalRead(LD1) == LOW){
      
    bleGamepad.setAxes(adjustedValue, adjustedValue2, 0, 0, adjustedValue3, adjustedValue4, DPAD_UP);

  }
  // LD2
  if (digitalRead(LD2) == LOW){
    
    bleGamepad.setAxes(adjustedValue, adjustedValue2, 0, 0, adjustedValue3, adjustedValue4, DPAD_LEFT);
  
  }
  // LD3
  if (digitalRead(LD3) == LOW){
      
    bleGamepad.setAxes(adjustedValue, adjustedValue2, 0, 0, adjustedValue3, adjustedValue4, DPAD_DOWN);
  
  }
  // LD4
  if (digitalRead(LD4) == LOW){
      
    bleGamepad.setAxes(adjustedValue, adjustedValue2, 0, 0, adjustedValue3, adjustedValue4, DPAD_RIGHT);

  }

}

setup.ino

// Setup
void setup()
{
 
  // Set Inputs
  setInputs();

  // ESP32 BLE Gamepad
  bleGamepad.begin();

}

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