Bluetooth Scanning App

Purpose

This application serves as a basic tool for Bluetooth Low Energy (BLE) scanning functionality on Android. It allows users to quickly initiate a scan and view nearby devices along with their signal strength.

Screenshots

Features

• Scan Initiation: Upon granting necessary permissions, the user can start scanning for BLE devices.
• Device List Display: Discovered devices are displayed in a simple list format. Each entry shows:
  • Device Name (if available) or MAC Address
  • RSSI (Received Signal Strength Indicator)
• RSSI Filter: A slider allows users to filter displayed devices based on their RSSI values. The filter range is currently set from -100 dBm to -50 dBm.

  Note: The effective range of RSSI can vary greatly depending on the environment and hardware.

Usage

1. Launch the app.
2. Grant Permissions: If prompted, accept the required permissions for Bluetooth scanning (e.g., BLUETOOTH_SCAN, ACCESS_FINE_LOCATION).
3. Observe Scan Results: The app will begin scanning, and devices will appear in the list.
4. Filter by RSSI (Optional): Adjust the slider to configure the signal strength scan filter. Devices with RSSI values below the selected slider value will be shown.

   Note: The user must restart the scan once again as the scanning will stop automatically when the slider is moved.

Build

1. Build the app:

   m ScanningApp
   

2. Install the app:

   adb install -r ${ANDROID_PRODUCT_OUT}/system/app/ScanningApp/ScanningApp.apk
   

3. Launch the app.