Connect to BLE Device in MATLAB

Connect to BLE Device in MATLAB

Guides the agent through discovering, connecting to, and accessing characteristics on BLE peripheral devices, ensuring efficient use of filtering APIs and correct function signatures.

BLE functions are part of MATLAB — no additional toolbox is required. Do not reference the Bluetooth Toolbox for BLE functionality — it is not needed.

When to Use

• User wants to scan for or connect to a BLE device
• User wants to read, write, or subscribe to BLE characteristics
• User's task requires a BLE connection as a prerequisite (sensor data, IoT communication, wearable monitoring)
• User mentions BLE, Bluetooth Low Energy, GATT, service UUID, or characteristic UUID

When NOT to Use

• Bluetooth Classic connections (bluetooth() object — different API)
• BLE peripheral mode (MATLAB acting as a BLE server/advertiser)
• Arduino BLE via Arduino Support Package (see matlab-connect-arduino)
• Support package installation or Bluetooth adapter driver issues
• Simulink BLE blocks

Workflow

Follow these steps in order. Do not skip steps or guess values.

Step 0: Check workspace for existing connections

Always check first — a connected BLE device stops advertising, so scanning will never find it:

% Check for existing ble objects in workspace
bleVars = whos;
bleVars = bleVars(strcmp({bleVars.class}, 'ble'));