Use XIAO ESP32C3 as a HID

Products & Technology
1

HI!
I will connect my ESP32C3 to my computer via Bluetooth.
I would like my ESP32C3 to work as a HID and send a A when I connect GPIO 2 and 3.
And I can´t get this to work.
Any ideas?
Cheers
Fredrik

I use this code now:

#include <BleKeyboard.h>

// Create a BLE Keyboard object
BleKeyboard keyboard;

// Define GPIO pins
const int gpioPin1 = 2;
const int gpioPin2 = 3;

void setup() {
  // Start serial communication for debugging
  Serial.begin(115200);
  Serial.println("ESP32 BLE Keyboard!");

  // Initialize BLE keyboard
  keyboard.begin();

  // Set GPIO pins as inputs with pull-up resistors
  pinMode(gpioPin1, INPUT_PULLUP);  // GPIO 2
  pinMode(gpioPin2, INPUT_PULLUP);  // GPIO 3
}

void loop() {
  // Read the status of GPIO 2 and GPIO 3
  int state1 = digitalRead(gpioPin1);
  int state2 = digitalRead(gpioPin2);

  // If both pins are shorted (i.e., both are LOW)
  if (state1 == LOW && state2 == LOW) {
    // If the keyboard is not already connected, connect it
    if (!keyboard.isConnected()) {
      Serial.println("Connecting to computer...");
      while (!keyboard.isConnected()) {
        delay(100);
      }
      Serial.println("Connected!");
    }

    // Send "A" when GPIO 2 and GPIO 3 are shorted
    Serial.println("Shorted! Sending 'A'...");
    keyboard.write('A');  // Sends the letter 'A'
    delay(1000);  // Wait a bit to prevent sending multiple 'A's too quickly
  }

  delay(100);  // Small delay to avoid high CPU load
}
2

Short-circuiting GPIO2 and GPIO3 does not make them LOW. Both ports must be connected to GND.