NES pico ble

BLEJoystick-NES.ino

#include <JoystickBLE.h>

volatile bool updateRequired = false; // Flag to track updates

void handleButtonPress() {
  updateRequired = true; // Set the flag when any button changes state
}
const char *localName = "NES BLE pico";
void setup(){}
void setup1() {
  JoystickBLE.begin(localName);

  // Configure pins as inputs with pull-down resistors
  pinMode(2, INPUT_PULLDOWN); // UP
  pinMode(3, INPUT_PULLDOWN); // DOWN
  pinMode(4, INPUT_PULLDOWN); // LEFT
  pinMode(5, INPUT_PULLDOWN); // RIGHT
  pinMode(6, INPUT_PULLDOWN); // START
  pinMode(7, INPUT_PULLDOWN); // SELECT
  pinMode(8, INPUT_PULLDOWN); // A BUTTON
  pinMode(9, INPUT_PULLDOWN); // B BUTTON

  // Configure onboard LED pin as output
  pinMode(LED_BUILTIN, OUTPUT);

  // Attach interrupts for all buttons
  attachInterrupt(digitalPinToInterrupt(2), handleButtonPress, CHANGE); // UP
  attachInterrupt(digitalPinToInterrupt(3), handleButtonPress, CHANGE); // DOWN
  attachInterrupt(digitalPinToInterrupt(4), handleButtonPress, CHANGE); // LEFT
  attachInterrupt(digitalPinToInterrupt(5), handleButtonPress, CHANGE); // RIGHT
  attachInterrupt(digitalPinToInterrupt(6), handleButtonPress, CHANGE); // START
  attachInterrupt(digitalPinToInterrupt(7), handleButtonPress, CHANGE); // SELECT
  attachInterrupt(digitalPinToInterrupt(8), handleButtonPress, CHANGE); // A BUTTON
  attachInterrupt(digitalPinToInterrupt(9), handleButtonPress, CHANGE); // B BUTTON

  // Enable manual sending mode
  JoystickBLE.useManualSend(true);
}

bool toggle = false;
void loop() {
  if (updateRequired) {
    updateRequired = false; // Clear the update flag
    // Handle MENU combination
    if (digitalRead(8) && digitalRead(9)) {
      JoystickBLE.button(1, false); // START
      JoystickBLE.button(2, false); // SELECT
      JoystickBLE.button(9, true);  // MENU
    } else {
      JoystickBLE.button(1, digitalRead(8)); // START
      JoystickBLE.button(2, digitalRead(9)); // SELECT
      JoystickBLE.button(9, false);          // MENU
    }

    // Handle other buttons
    JoystickBLE.button(3, digitalRead(5)); // A BUTTON
    JoystickBLE.button(4, digitalRead(7)); // B BUTTON
    JoystickBLE.button(5, digitalRead(2)); // UP
    JoystickBLE.button(6, digitalRead(3)); // DOWN
    JoystickBLE.button(7, digitalRead(4)); // LEFT
    JoystickBLE.button(8, digitalRead(6)); // RIGHT

    // Send all updates
    JoystickBLE.send_now();

    // Blink onboard LED if any button is pressed
    if (digitalRead(8) || digitalRead(9) || digitalRead(2) || digitalRead(3) ||
        digitalRead(4) || digitalRead(5) || digitalRead(6) || digitalRead(7)) {
      toggle = !toggle;
      digitalWrite(LED_BUILTIN, toggle);
    }
    //delay(4); // Short delay to prevent flooding
  } 
}