Is there an issue using this library and example with ESP32-S3 boards?

[en-x]

Hello,

I am relatively new to Arduino and ESP32, but I do have a programming background. I have built serval projects and am now interested in building something using this BLE Keyboard Library. Thinking this was going to be easy...

I downloaded this library and uploaded the SendKeyStrokes code to my an ESP32-S3 board (I have actually tried several different models, Seeed Xiao, LilyGO, TinyS3, M5StampS3) and none of the S3 board seem to work. I can see the the board in my Bluetooth list on IOS 16.5, I can pair the device, and then immediately get the following in the Serial Monitor...

E (33843) BT_GATT: GATT_INSUF_AUTHENTICATION

E (35434) BT_SMP: smp_calculate_link_key_from_long_term_key failed to update link_key. Sec Mode = 2, sm4 = 0x00 E (35435) BT_SMP: smp_derive_link_key_from_long_term_key failed

E (35440) BT_BTM: btm_proc_smp_cback received for unknown device E (35445) BT_BTM: BTM_GetSecurityFlags false

E (35449) BT_GATT: GATT_INSUF_AUTHENTICATION

E (35493) BT_BTM: BTM_GetSecurityFlags false

E (35493) BT_GATT: GATT_INSUF_AUTHENTICATION

E (35553) BT_BTM: BTM_GetSecurityFlags false

E (35553) BT_GATT: GATT_INSUF_AUTHENTICATION

E (36783) BT_BTM: BTM_GetSecurityFlags false

E (37803) BT_BTM: BTM_GetSecurityFlags false

If I do they exact same steps using an ESP32-32D board it works perfectly and the keystrokes are sent to the phone. I am I doing something wrong with the S3 or is there a compatibly issue. I searched these messages above and cannot seem to find any solutions. I also tried a Seeed Xiao EPS32-C3 and that did not work either. I think I am just missing a step or something related to the S3 boards.

Any help would be greatly appreciated. Thank you. Eric.

[TenViki]

I had the same issue. You just need to enable NimBLE mode, you can do that just by adding

#define USE_NIMBLE

on top of your main.cpp file.

Let me know if that helped!

[en-x]

I was able to resolve my issue… Edit file “BleKeyboard.cpp"

Find line: pSecurity->setAuthenticationMode(ESP_LE_AUTH_REQ_SC_MITM_BOND);

Replace the above line to the following: pSecurity->setAuthenticationMode(ESP_LE_AUTH_BOND);

[en-x]

I had the same issue. You just need to enable NimBLE mode, you can do that just by adding

#define USE_NIMBLE

on top of your main.cpp file.

Let me know if that helped!

Thanks! I fixed it… see below

[lubaldi]

i have a similar issue, both with USE_NIMBLE and not:

in 1st connection all works well, but if i shut down bluetooth, or switch-off Esp32, once I turn it back on, Smartphone deletes the Esp32 from the list of Pairede device and i've to reseach it and reconnect manually. Has this ever happened to anyone?

[lightninlex]

I am trying to use this library to turn my esp32-s3-n8r8 devkit C-1 into a controller for Retro Pie. I've set up a breakout board with the pin definitions from below, for buttons arranged like an SNES controller. I'm not quite sure this issue, but my esp32 keeps connecting and disconnecting at a rapid rate, and I can't get anything out of it besides the error code at the bottom of my comment. PLEASE HELP :(

include

define USE_NIMBLE

BleKeyboard bleKeyboard("GameBoxControl");

// Define debounce delay in milliseconds const long debounceDelay = 50; // 50 ms debounce delay

// Variables to store the last time the button was toggled unsigned long lastDebounceTime_A = 0; unsigned long lastDebounceTime_B = 0; unsigned long lastDebounceTime_X = 0; unsigned long lastDebounceTime_Y = 0; unsigned long lastDebounceTime_START = 0; unsigned long lastDebounceTime_SELECT = 0; unsigned long lastDebounceTime_L = 0; unsigned long lastDebounceTime_R = 0; unsigned long lastDebounceTime_SW = 0; // Variables to store the last button states int lastButtonState_A = HIGH; int lastButtonState_B = HIGH; int lastButtonState_X = HIGH; int lastButtonState_Y = HIGH; int lastButtonState_START = HIGH; int lastButtonState_SELECT = HIGH; int lastButtonState_L = HIGH; int lastButtonState_R = HIGH; int lastButtonState_SW = HIGH; // Define button pins const uint8_t PIN_BUTTON_A = 8; const uint8_t PIN_BUTTON_B = 46; const uint8_t PIN_BUTTON_X = 10; const uint8_t PIN_BUTTON_Y = 12; const uint8_t PIN_BUTTON_L = 13; const uint8_t PIN_BUTTON_R = 14; const uint8_t PIN_BUTTON_START = 1; const uint8_t PIN_BUTTON_SELECT = 2;

// Define joystick pins const uint8_t PIN_JOYSTICK_VRX = 4; const uint8_t PIN_JOYSTICK_VRY = 6; const uint8_t PIN_BUTTON_SW = 15;

// Define the deadzone range const int deadzone = 30; // Adjust the deadzone value to suit your needs

// Function to apply deadzone to a joystick value int applyDeadzone(int value, int centerValue, int deadzone) { if (abs(value - centerValue) < deadzone) { return centerValue; } else { return value; } }

// Function to read inputs and send key strokes void readInputsAndSendKeystrokes() { unsigned long currentTime = millis();

// Read and debounce each button // Example for Button A: int reading_A = digitalRead(PIN_BUTTON_A); if (reading_A != lastButtonState_A) { lastDebounceTime_A = currentTime; } if ((currentTime - lastDebounceTime_A) > debounceDelay) { if (reading_A == LOW) { bleKeyboard.press('a'); // Replace 'a' with your desired key for Button A } else { bleKeyboard.release('a'); } lastButtonState_A = reading_A; } // Button B read and debounce int reading_B = digitalRead(PIN_BUTTON_B); if (reading_B!= lastButtonState_B) { lastDebounceTime_B = currentTime; } if ((currentTime - lastDebounceTime_B) > debounceDelay) { if (reading_B == LOW) { bleKeyboard.press('b'); // Replace 'a' with your desired key for Button A } else { bleKeyboard.release('b'); } lastButtonState_B = reading_B; } // Button X read and debounce int reading_X = digitalRead(PIN_BUTTON_X); if (reading_X!= lastButtonState_X) { lastDebounceTime_X = currentTime; } if ((currentTime - lastDebounceTime_X) > debounceDelay) { if (reading_X == LOW) { bleKeyboard.press('x'); // Replace 'a' with your desired key for Button A } else { bleKeyboard.release('x'); } lastButtonState_X = reading_X; } // Button Y read and debounce int reading_Y = digitalRead(PIN_BUTTON_Y); if (reading_Y!= lastButtonState_Y) { lastDebounceTime_Y = currentTime; } if ((currentTime - lastDebounceTime_Y) > debounceDelay) { if (reading_Y == LOW) { bleKeyboard.press('y'); // Replace 'a' with your desired key for Button A } else { bleKeyboard.release('y'); } lastButtonState_Y = reading_Y; } // Button START read and debounce int reading_START = digitalRead(PIN_BUTTON_START); if (reading_START!= lastButtonState_START) { lastDebounceTime_START = currentTime; } if ((currentTime - lastDebounceTime_START) > debounceDelay) { if (reading_START == LOW) { bleKeyboard.press('z'); // Replace 'a' with your desired key for Button A } else { bleKeyboard.release('z'); } lastButtonState_START = reading_START; } // Button SELECT read and debounce int reading_SELECT = digitalRead(PIN_BUTTON_SELECT); if (reading_SELECT!= lastButtonState_SELECT) { lastDebounceTime_SELECT = currentTime; } if ((currentTime - lastDebounceTime_SELECT) > debounceDelay) { if (reading_SELECT == LOW) { bleKeyboard.press('c'); // Replace 'a' with your desired key for Button A } else { bleKeyboard.release('c'); } lastButtonState_SELECT = reading_SELECT; } // Button L read and debounce int reading_L = digitalRead(PIN_BUTTON_L); if (reading_L!= lastButtonState_L) { lastDebounceTime_L = currentTime; } if ((currentTime - lastDebounceTime_L) > debounceDelay) { if (reading_L == LOW) { bleKeyboard.press('l'); // Replace 'a' with your desired key for Button A } else { bleKeyboard.release('l'); } lastButtonState_L = reading_L; } // Button R read and debounce int reading_R = digitalRead(PIN_BUTTON_R); if (reading_R!= lastButtonState_R) { lastDebounceTime_R = currentTime; } if ((currentTime - lastDebounceTime_R) > debounceDelay) { if (reading_R == LOW) { bleKeyboard.press('r'); // Replace 'a' with your desired key for Button A } else { bleKeyboard.release('r'); } lastButtonState_R = reading_R; } // Button SW read and debounce int reading_SW = digitalRead(PIN_BUTTON_SW); if (reading_SW!= lastButtonState_SW) { lastDebounceTime_SW = currentTime; } if ((currentTime - lastDebounceTime_SW) > debounceDelay) { if (reading_SW == LOW) { bleKeyboard.press('v'); // Replace 'a' with your desired key for Button A } else { bleKeyboard.release('v'); } lastButtonState_SW = reading_SW; }

// Read joystick values int xValue = analogRead(PIN_JOYSTICK_VRX); int yValue = analogRead(PIN_JOYSTICK_VRY);

// Apply deadzone xValue = applyDeadzone(xValue, 2047, deadzone); yValue = applyDeadzone(yValue, 2047, deadzone);

// Joystick X-axis mapping if (xValue > 2047 + deadzone) { bleKeyboard.press(KEY_RIGHT_ARROW); // Right } else if (xValue < 2047 - deadzone) { bleKeyboard.press(KEY_LEFT_ARROW); // Left } else { bleKeyboard.release(KEY_RIGHT_ARROW); bleKeyboard.release(KEY_LEFT_ARROW); }

// Joystick Y-axis mapping if (yValue > 2047 + (deadzone + 35)) { bleKeyboard.press(KEY_UP_ARROW); // Up } else if (yValue < 2047 - (deadzone - 35)) { bleKeyboard.press(KEY_DOWN_ARROW); // Down } else { bleKeyboard.release(KEY_UP_ARROW); bleKeyboard.release(KEY_DOWN_ARROW); } }

void setup() { Serial.begin(115200); Serial.println("Starting BLE work!"); bleKeyboard.begin();

// Initialize button pins as inputs pinMode(PIN_BUTTON_A, INPUT_PULLUP); pinMode(PIN_BUTTON_B, INPUT_PULLUP); pinMode(PIN_BUTTON_X, INPUT_PULLUP); pinMode(PIN_BUTTON_Y, INPUT_PULLUP); pinMode(PIN_BUTTON_L, INPUT_PULLUP); pinMode(PIN_BUTTON_R, INPUT_PULLUP); pinMode(PIN_BUTTON_START, INPUT_PULLUP); pinMode(PIN_BUTTON_SELECT, INPUT_PULLUP);

// Initialize joystick pins as inputs pinMode(PIN_JOYSTICK_VRX, INPUT); pinMode(PIN_JOYSTICK_VRY, INPUT); pinMode(PIN_BUTTON_SW, INPUT_PULLUP); }

void loop() { if (bleKeyboard.isConnected()) { readInputsAndSendKeystrokes(); } delay(100); // Delay to manage the loop execution speed }

[SERIAL LOG] Starting BLE work! E (51807) BT_APPL: Unknown connection ID: 3 fail sending notification E (51808) BT_APPL: Unknown connection ID: 3 fail sending notification E (51814) BT_APPL: Unknown connection ID: 3 fail sending notification E (51821) BT_APPL: Unknown connection ID: 3 fail sending notification E (51827) BT_APPL: Unknown connection ID: 3 fail sending notification E (51833) BT_APPL: Unknown connection ID: 3 fail sending notification E (51839) BT_APPL: Unknown connection ID: 3 fail sending notification E (51845) BT_APPL: Unknown connection ID: 3 fail sending notification E (52227) BT_APPL: Unknown connection ID: 3 fail sending notification