This Arduino code is designed to set up an ESP32 as a Bluetooth Low Energy (BLE) server. It's intended to communicate with a client device, such as a smartphone, via BLE and control a LED based on received commands.
- BLE Initialization: Sets up the ESP32 as a BLE device named "ESP32_BLE".
- BLE Server Creation: Establishes a BLE server to handle incoming client connections.
- Service and Characteristic Setup: Creates a BLE service with a custom UUID and a characteristic that can read and write data.
- Connection Handling: Implements callbacks to manage device connections and disconnections.
- Command Processing: Reads the characteristic's value to receive commands. For example, if the command "up" is received, it sets GPIO 25 to HIGH.
When a client device sends a command via BLE, this ESP32 server reads the command and controls the motor accordingly. The GPIO 25 pin is used here as an example for motor control.
Please replace YOUR_SERVICE_UUID and YOUR_CHARACTERISTIC_UUID with your actual UUIDs used in your BLE service and characteristic.