What do you men by a pin that needs to get connected? What’s the other Bluetooth device (server) that you’re referring to? Thanks!

I need a PIN (Personal Identification Number) to connect to a health bluetooth device (other Bluetooth device). I need to read data from that device and process it with my ESP32. For example, If I try to connect with my phone, I must type a 4-digit PIN to get connected, but I don’t know how to send that PIN from my ESP32 to autheticate and read data from the health bluetooth device.

Unfortunately I don’t think the ESP32 BLE library currently supports that feature… I think you would need to create your own example that establishes a communication with a PIN using the ESP-IDF: https://github.com/espressif/esp-idf
At least, I’ve never seen an example about that. Regards,
Rui

Ok, thank you for your time.

You might also consider going through the ESP32 BLE for Arduino library and try to find if a method like that is already implemented: https://github.com/nkolban/ESP32_BLE_Arduino/tree/master/src