How does ESP32 Ble work?

How does ESP32 Ble work?

The ESP32 BLE Server device will start the BLE Server and starts advertising its services. If you observe the Client ESP32’s Code, we used the Server ESP32’s Service UUID and Characteristic UUID. After that, the client tries to set the characteristic value of the server with a new value every couple of seconds.

How do I turn on Bluetooth on ESP32?

Make sure you have the right board and COM port selected. After uploading the code, open the Serial Monitor at a baud rate of 115200. Press the ESP32 Enable button. After a few seconds, you should get a message saying: “The device started, now you can pair it with bluetooth!”.

How to send data from ESP32 to Android app?

I create Android App by App Inventor 2. I set ESP32 to AP Mode and I can send data from smartphone to ESP32 but I can’t send data from ESP32 to smartphone. how to send data from ESP32 to Android App ? Smartphone makes http request to ESP, sends POST data with it, gets data back in the response.

How does ESP32 Bluetooth transmit and receive data?

Similarly, in order to send data over Bluetooth, the Processor of ESP32 transmits data to the Bluetooth Controller using the serial interface. We will use this information along with a dedicated ‘BluetoothSerial’ library to transmit and receive data. The BluetoothSerial library works similar to the Serial library but it is just within ESP32.

How do I set my phone to pair with ESP32?

Your mobile will ask if you want to pair with ‘ESP32’ and you select yes (or ok). There is no password. Now, open the ‘Serial Bluetooth Terminal’ app on your phone and click on the three horizontal bars on the top left corner of the screen. Select ‘Devices’ tab and select ESP32 from the list.

How can I send large data via Bluetooth / ble?

I tried to send data via BLE (BLECharacteristic) and this works with small data (~50byte). – How can I send large data via Bluetooth/BLE? – Is there a difference between BLE and Bluetooth on the ESP32? – Is my described approach above best practice or is there potential for optimization?